WO2016187095A1 - Aliphatic polyester coating compositions containing tetramethyl cyclobutanediol - Google Patents
Aliphatic polyester coating compositions containing tetramethyl cyclobutanediol Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
- C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/16—Dicarboxylic acids and dihydroxy compounds
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- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
- C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
- C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/16—Dicarboxylic acids and dihydroxy compounds
- C08G63/18—Dicarboxylic acids and dihydroxy compounds the acids or hydroxy compounds containing carbocyclic rings
- C08G63/199—Acids or hydroxy compounds containing cycloaliphatic rings
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
- C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/16—Dicarboxylic acids and dihydroxy compounds
- C08G63/20—Polyesters having been prepared in the presence of compounds having one reactive group or more than two reactive groups
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
- C09D167/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
- C09D167/06—Unsaturated polyesters having carbon-to-carbon unsaturation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2150/00—Compositions for coatings
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2150/00—Compositions for coatings
- C08G2150/90—Compositions for anticorrosive coatings
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
- C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/123—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds the acids or hydroxy compounds containing carbocyclic rings
- C08G63/137—Acids or hydroxy compounds containing cycloaliphatic rings
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/56—Non-aqueous solutions or dispersions
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2312/00—Crosslinking
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/20—Diluents or solvents
Definitions
- This invention pertains to aliphatic, curable polyesters for solvent-borne, thermosetting, single coating compositions. Particularly, this invention pertains to curable polyesters containing 2,2,4,4-tetraalkylcyclobutane-1,3-diol (TACD) and high-solids, solvent-borne thermosetting mono-coating compositions prepared from these polyesters. These polyesters can be used in blends with acrylic resins or serve as the primary film former in a coating formulation. BACKGROUND OF THE INVENTION
- Coatings with high hardness typically exhibit high gloss, good distinctness of image (DOI), fast dry-times, scratch, stain, chemical, and humidity resistance, and outdoor durability.
- DOI good distinctness of image
- Aliphatic polyesters are frequently used to reduce viscosity and increase solids for thermosetting acrylic (abbreviated herein as "TSA”) coatings. Aliphatic polyesters also are useful as a primary film former in high solids coatings because of their ability to reduce volatile organic compound (“VOC”) emissions. Coatings made from aliphatic polyesters are generally flexible but tend to be soft, which results in poor resistance to solvents and chemicals, poor humidity resistance and poor outdoor durability.
- CHDM hydrogenated bisphenol A
- HBPA hydrogenated bisphenol A
- TSA resins are widely used in industrial coatings. They can be formulated to a high glass transition temperature (Tg) and exhibit excellent light stability and hydrolysis resistance. These properties result in coatings with the desirable characteristics of high hardness; fast dry times; resistance to stains, chemicals and humidity; and good outdoor durability. Consequently, TSA resins often serve as the primary film-former in coatings for demanding applications that include transportation, maintenance, marine and building/construction markets.
- TSA resins exhibit many desirable properties, they often lack flexibility and require more solvent in the coating formulation to achieve a practical application viscosity.
- the higher solvent requirement for TSA resins makes it difficult to achieve high solids coatings with reduced VOC content as mandated by various federal and state air quality organizations.
- TSA resins can be blended with TSA resins.
- Tg glass transition temperature
- a monocoat paint system reduces painting time and energy use by cutting the number of paint applications from three to two and the number of drying procedures from two to one. The reduction in paint and energy consumed means reduced carbon dioxide and particulate emissions compared with conventional paint processes.
- thermosetting coatings compositions There is a need in the coatings industry for aliphatic polyesters that exhibit good hardness with good flexibility and solubility when formulated into thermosetting coatings compositions. In addition, there is a need for aliphatic polyester resins that, when blended with TSA resins, lower the viscosity while maintaining the Tg of the TSA resin in high solids, thermosetting coating compositions.
- the present invention provides curable, aliphatic polyesters prepared from 2,2,4,4-tetraalkylcyclobutane-1,3-diol.
- One aspect of the invention is a curable, aliphatic polyester, comprising residues of:
- hydroxyl component comprising the residues of:
- TACD 2,2,4,4- tetraalkylcyclobutane-1,3-diol
- thermosetting coating solution comprising:
- TACD 2,2,4,4-tetraalkylcyclobutane-1,3-diol
- the curable polyester contains diacid residues in an amount of at least 90 mole % of aliphatic diacid residues, based on the total moles of all diacid residues in the curable polyester, and, wherein the curable polyester has a hydroxyl number of 50 to 450 mgKOH/g of polyester, an acid number of 0 to 80 mgKOH/g, and a number average molecular weight of 300 to 10,000 g/mole of polyester; and
- B from 10 to 50 weight percent, based on the total weight of the solution, of a solvent other than water.
- thermosetting monocoat coating composition comprising:
- TACD 2,2,4,4-tetraalkylcyclobutane-1,3-diol
- the curable polyester contains diacid residues in an amount of at least 90 mole % of aliphatic diacid residues, based on the total moles of all diacid residues in the curable polyester, and, wherein the curable polyester has a hydroxyl number of 50 to 450 mgKOH/g of polyester, an acid number of 0 to 80 mgKOH/g, and a number average molecular weight of 300 to 10,000 g/mole of polyester; and
- C. from 10 to 50 weight percent, based on the total weight of (A) and (C), of a crosslinker comprising an aminoplast and/or isocyanate.
- the aliphatic polyesters may be blended with acrylics or serve as the primary film former to formulate factory and field-applied coatings used in auto OEM, auto refinish, transportation, aerospace, maintenance, marine, machinery and equipment, general metal, appliance, metal furniture, plastic and building / construction applciations.
- TSA thermosetting acrylic
- thermosetting monocoat coating composition to a substrate comprising:
- thermosetting monocoat coating composition comprising: A. 50 to 90 weight percent, based on the total weight of (A) and (C), of at least one curable, aliphatic polyester, comprising residues of:
- hydroxyl component comprising the residues of:
- TACD 2,2,4,4-tetraalkylcyclobutane-1,3-diol
- the curable polyester contains diacid residues in an amount of at least 90 mole % of aliphatic diacid residues, based on the total moles of all diacid residues in the curable polyester, and, wherein the curable polyester has a hydroxyl number of 50 to 450 mgKOH/g of polyester, an acid number of 0 to 80 mgKOH/g, and a number average molecular weight of 300 to 10,000 g/mole of polyester; and
- thermosetting monocoat coating composition to the substrate to produce a coated substrate
- curable, aliphatic polyesters that contain 2,2,4,4-tetraalkylcyclobutane-1,3-diol (TACD), and more particularly, 2,2,4,4- tetramethyl-1,3-cyclobutanediol (abbreviated herein as "TMCD”) can be used to prepare solvent-borne, high-solids, thermosetting coatings that exhibit high gloss, good hardness and flexibility; and solvent and chemical resistance.
- TMCD 2,2,4,4-tetraalkylcyclobutane-1,3-diol
- TSA thermosetting acrylic resins
- a curable, aliphatic polyester comprising:
- TACD 2,2,4,4-tetraalkylcyclobutane-1,3-diol
- the curable polyester contains diacid residues in an amount of at least 90 mole % of aliphatic diacid residues, based on the total moles of all diacid residues in the curable polyester, and, wherein the curable polyester has a hydroxyl number of 50 to 450 mgKOH/g of polyester, an acid number of 0 to 80 mgKOH/g, and a number average molecular weight of 300 to 10,000 g/mole of polyester.
- a range stated to be 0 to 10 is intended to disclose all whole numbers between 0 and 10 such as, for example 1, 2, 3, 4, etc., all fractional numbers between 0 and 10, for example 1.5, 2.3, 4.57, 6.1113, etc., and the endpoints 0 and 10.
- a range associated with chemical substituent groups such as, for example,“C 1 to C 5 diols”, is intended to specifically include and disclose C 1 , C 2 , C 3 , C 4 and C 5 diols.
- references to a composition “comprising”,“containing”,“having” or“including” "an” ingredient or “a” polyester is intended to include other ingredients or other polyesters, respectively, in addition to the specifically identifed ingredient or residue. Accordingly, the terms “containing”, “having” or“including” are intended to be synonymous and may be used
- curable, aliphatic polyester is synonymous with the term“resin” and is intended to mean a thermosetting surface coating polymer prepared by the polycondensation of one or more acid components and hydroxyl components.
- the curable, aliphatic polyester of the present invention is a thermoset polymer and is suitable as a resin for solvent-based coatings and more specifically mono-coat applications. This polyester has a low molecular weight, typically 500 to 10,000 daltons, and would not be suitable for fabrication films, sheets, and other shaped objects by extrusion, casting, blow molding, and other thermoforming processes commonly used for high molecular weight thermoplastic polymers.
- the polyester has a reactive functional group, typically a hydroxyl group or carboxyl group for the purpose of later reacting with a crosslinker in a coating formulation.
- the functional group is controlled by having either excess diol or acid (from dicarboxylic acid or tricarboxylic acid) in the polyester resin composition.
- the desired crosslinking pathway will determine whether the polyester resin will be hydroxyl-terminated or carboxylic acid-terminated. This concept is known to those skilled in the art and described, for example, in Organic Coatings Science and Technology, 2nd ed., p. 246-257, by Z. Wicks, F. Jones, and S. Pappas, Wiley, New York, 1999, the entire disclosure of which is incorporated herein by reference.
- the acid component comprises at least one dicarboxylic acid and may, optionally, include mono- and polybasic carboxylic acids.
- the curable, aliphatic polyester may be prepared from an acid component comprising an aliphatic or cycloaliphatic dicarboxylic acid such as, for example, adipic acid or 1,3- cyclohexanedicarboxylic acid, or a mixture of one or more aliphatic and
- the hydroxyl component comprises diols and polyols.
- the diols may comprise one or more cycloaliphatic diols such as, for example, 2,2,4,4- tetramethyl-1,3-cyclobutanediol, either alone or in combination with one or more linear or branched aliphatic diols such as, for example, neopentyl glycol. Catalysts may be used to accelerate the rate of the polycondensation reaction.
- acid components and hydroxyl components, other than TMCD of the curable, aliphatic polyester include those known in the art including, but not limited to, those discussed below, and in various documents known in the art such as, for example, in Resins for Surface Coatings, Vol.III, p. 63-167, ed. by P.K.T. Oldring and G. Hayward, SITA Technology, London, UK, 1987, the disclosure of which is incorporated herein by reference.
- residues associated within the various curable polyesters of the invention can be derived from the parent monomer compound itself or any derivative of the parent compound.
- the dicarboxylic acid residues referred to in the polymers of the invention may be derived from a dicarboxylic acid or its associated acid halides, esters, salts, anhydrides, or mixtures thereof.
- the term“dicarboxylic acid” is intended to include dicarboxylic acids and any derivative of a dicarboxylic acid, including its associated acid halides, esters, half-esters, salts, half-salts, anhydrides, and mixtures thereof, useful in a polycondensation process with a diol to make a curable, aliphatic polyester.
- aliphatic is intended to have its common meaning as would be understood by persons having ordinary skill in the art, that is, acyclic or cyclic, saturated or unsaturated carbon compounds, excluding benzenoid or other aromatic systems.
- cycloaliphatic as used herein, is intended to mean an aliphatic, cyclic compound.
- aliphatic polyester as used herein, is understood to mean a polyester that contains 90 mole percent or greater aliphatic diacid or diol residues, based on the total moles of diacid or diol residues.
- curable, aliphatic polyester is essentially free, i.e., having less than 1 mole % of aromatic diacid and/or aromatic diol residues.
- the curable, aliphatic polyester also comprises (a) from 5 mole % to 45 mole %, based on the total moles of (a) and (b) discussed herein, of the residues of 2,2,4,4- tetraalkylcyclobutane-1,3-diol (TACD).
- TACD 2,2,4,4- tetraalkylcyclobutane-1,3-diol
- the curable, aliphatic polyester can comprise from 5 mole % to 40 mole %, based on the total moles of (a) and (b); or from 10 mole % to 40 mole %, based on the total moles of (a) and (b); or from 15 mole % to 40 mole %, based on the total moles of (a) and (b); or from 17 mole % to 30 mole %, based on the total moles of (a) and (b); or from 20 mole % to 30 mole %, based on the total moles of (a) and (b); or from 25 mole % to 30 mole %, based on the total moles of (a) and (b) of TACD residues.
- the TACD compounds can be represented by the general structure below:
- R1, R2, R3, and R4 each independently represent an alkyl radical, for example, a lower alkyl radical having 1 to 8 carbon atoms; or 1 to 6 carbon atoms, or 1 to 5 carbon atoms, or 1 to 4 carbon atoms, or 1 to 3 carbon atoms, or 1 to 2 carbon atoms, or 1 carbon atom.
- the alkyl radicals may be linear, branched, or a
- the polyhydroxyl compounds are hydrocarbons and do not contain atoms other than hydrogen, carbon and oxygen.
- suitable diols“(a)” include 2,2,4,4-tetramethylcyclobutane- 1,3-diol, 2,2,4,4-tetraethylcyclobutane-1,3-diol, 2,2,4,4-tetra-n-propylcyclobutane- 1,3-diol, 2,2,4,4-tetra-n-butylcyclobutane-1,3-diol, 2,2,4,4-tetra-n-pentylcyclobutane- 1,3-diol, 2,2,4,4-tetra-n-hexylcyclobutane-1,3-diol, 2,2,4,4-tetra-n-heptylcyclobutane- 1,3-diol, 2,2,4,4-tetra-n-n-n-n-n-n-heptyl
- the diol is selected from 2,2,4,4-tetraalkylcyclobutane-1,3-diol, 2,2- dimethyl-1,3-propanediol (neopentyl glycol), 1,2 cyclohexanedimethanol, 1,3- cyclohexanedimethanol, 1,4 cyclohexanedimethanol, 2,2,4-trimethyl-1,3-pentanediol, hydroxypivalyl hydroxypivalate, 2-methyl-1,3-propanediol, 2-butyl-2-ethyl-1,3- propanediol, 2-ethyl-2-isobutyl-1,3-propanediol, 1,3-butanediol, 1,4-butanediol, 1,5- pentanediol, 1,6-hexanediol, 2,2,4,4-tetramethyl-1,6-hexanediol, 2,
- the diol“(a)” is 2,2,4,4-tetramethyl-1,3-cyclobutanediol (TMCD), 2,2- dimethyl-1,3-propanediol (neopentyl glycol), 1,2-cyclohexanedimethanol, 1,3- cyclohexanedimethanol, 1,4- cyclohexanedimethanol, 2,2,4-trimethyl-1,3- pentanediol, hydroxypivalyl hydroxypivalate, 2-methyl-1,3-propanediol, 2-butyl-2- ethyl-1,3-propanediol, 1,4-butanediol, 1,6-hexanediol and mixtures thereof.
- TMCD 2,2,4,4-tetramethyl-1,3-cyclobutanediol
- neopentyl glycol 2,2-cyclohexanedimethanol, 1,3- cyclohex
- the diols (b) have 2 hydroxyl groups and can be branched or linear, saturated or unsaturated, aliphatic or cycloaliphatic C 2 -C 20 compounds, the hydroxyl groups being primary, secondary, and/or tertiary, desirably primary.
- diols (b) examples include 2,2-dimethyl-1,3-propanediol (neopentyl glycol), 1,2 cyclohexane-dimethanol, 1,3- cyclohexanedimethanol, 1,4 cyclohexanedimethanol, 2,2,4-trimethyl-1,3-pentanediol, hydroxypivalyl hydroxypivalate, 2-methyl-1,3-propanediol, 2-butyl-2-ethyl-1,3- propanediol, 2-ethyl-2-isobutyl-1,3-propanediol, 1,3-butanediol, 1,4-butanediol, 1,5- pentanediol, 1,6-hexanediol, 2,2,4,4-tetramethyl-1,6-hexanediol, 1,10-decanediol, 1,4- benzenedimethanol, ethylene
- the diol (b) is selected from 2,2-dimethyl-1,3-propanediol (neopentyl glycol), 1,2-cyclohexanedimethanol, 1,3-cyclohexanedimethanol, 1,4- cyclohexanedimethanol, 2,2,4-trimethyl-1,3-pentanediol, hydroxypivalyl hydroxypivalate, 2-methyl-1,3-propanediol, 2-butyl-2-ethyl-1,3-propanediol, 1,4- butanediol, 1,6-hexanediol and mixtures thereof.
- At least 15 mole % of (b) comprises neopentyl glycol, or at least 20 mole % neopentyl glycol, or at least 22 mole % neopentyl glycol, or at least 25 mole % neopentyl glycol, or at least 35 mole % neopentyl glycol, or at least 40 mole % neopentyl glycol, or at least 45 mole % neopentyl glycol, or at least 50 mole % neopentyl glycol, or at least 55 mole % neopentyl glycol, or at least 60 mole % neopentyl glycol, or at least 65 mole % neopentyl glycol, or at least 70 mole % neopentyl glycol, or at least 75 mole % ne
- the curable, aliphatic polyester can include residues of TACD (a) from 30 to 40 mole % and the diol (b) from 60 to 70 mole %, based on the total mole of (a) and (b).
- the molar ratio of (b) to (a) is from 1:1-2.5:1, or 1.3:1 to 2.5:1, or 1.5:1 to 2.0:1, or from 1.1:1 to 1.8:1.
- An important aspect of the present invention is that the molar quantity of residues of (a) is always less than the molar quantity of residues of (b) in the curable, aliphatic polyester.
- the amount of diol (b) to TACD (a) is important in that when the mole % of (a) exceeds the mole % of (b) the monocoat coating described hereinbelow becomes brittle and if the amount of (b) is excessive, i.e., outside of the above molar ratiors, then the monocoat coating described hereinbelow becomes too soft have reduced weatherability and mechanical properties.
- the curable, aliphatic polyester further includes residues of from 3 to 35 mole %, based on the total moles of (a), (b) and (c), of a polyol (c) having 3 or more hydroxyl groups and can be branched or linear, saturated or unsaturated, aliphatic or cycloaliphatic C 2 -C 20 compounds, the hydroxyl groups being primary, secondary, and/or tertiary. It is contemplated that at least two of the hydroxyl groups be primary. Morevoer, the polyols are hydrocarbons and do not contain atoms other than hydrogen, carbon and oxygen.
- Non-limiting examples of suitable polyols include 1,1,1-trimethylolpropane (TMP), 1,1,1-trimethylolethane, glycerin, pentaerythritol, erythritol, threitol, dipentaerythritol, sorbitol, and mixtures thereof.
- TMP 1,1,1-trimethylolpropane
- glycerin 1,1,1-trimethylolethane
- pentaerythritol erythritol
- threitol dipentaerythritol
- sorbitol dipentaerythritol
- the residues from the polyol in the curable, aliphatic polyester is from 5 mole % to 35 mole %, or from 6 mole % to 35 mole %, or from 7 mole % to 35 mole %, or from 8 mole % to 35 mole %, or from 9 mole % to 35 mole %, or from 10 mole % to 35 mole %, or from 11 mole % to 35 mole %, or from 12 mole % to 35 mole %, or from 13 mole % to 35 mole %, or from 14 mole % to 35 mole %, or from 15 mole % to 35 mole %, or from 16 mole % to 35 mole %, or from 17 mole % to 35 mole %, or from 18 mole % to 35 mole %, or from 19 mole % to 35 mole %, or from 20 mole % to 35 mole %, or from 21 mole % to 35
- the polyol comprises residues of from 25% to 100% 1,1,1-trimethylolpropane, or from 30% to 100%, or from 35% to 100%, or from 40% to 100%, or from 45% to 100%, or from 50% to 100%, or from 55% to 100%, or from 60% to 100%, or from 65% to 100%, or from 70% to 100%, or from 75% to 100%, or from 80% to 100%, or from 85% to 100%, or from 90% to 100%.
- the amount of polyol residues relative to the amount of residues from (a) and (b) in the curable aliphatic polyester is important in that when the mole % of (c) exceeds the mole % of (a) the monocoat coating described hereinbelow becomes brittle and if the amount of (c) is too little, then the monocoat coating described hereinbelow does not exhibit sufficient cross- linking resulting in excessive cure times, excessive cure temperatures and reduced chemical resistance.
- the residues of the alicyclic diacid compound (d) are obtained from a cyclic aliphatic dicarboxylic acid compound, its diester derivative, its anhydride, or a combination thereof.
- Suitable alicyclic diacid compounds include compounds having two carboxylic acid groups, their diester derivatives, and their anhydrides.
- the dicarboxylic acid compounds are capable of forming ester linkages with diol or polyol compounds.
- a polyester can be synthesized by using a polyhydroxyl compound and a derivative of a dicarboxylic acid such as, for example, dimethyl ester or other dialkyl esters of the diacid, or diacid chloride or other diacid halides, or acid anhydride.
- Suitable alicyclic diacids include, but are not limited to,
- HHPA hexahydrophthalic anhydride
- tetrahydrophthalic anhydride tetrahydrophthalic anhydride
- the acyclic aliphatic diacid (e) is a residue from open-chain aliphatic dicarboxylic acid compound, its diester derivative, its anhydride, or a combination thereof.
- acyclic aliphatic diacids include adipic acid, maleic anhydride, maleic acid, fumaric acid, itaconic anhydride, itaconic acid, citraconic anhydride, citraconic acid, dodecanedioic acid, succinic acid, succinic anhydride, glutaric acid, sebacic acid, azelaic acid, and mixtures thereof.
- the alicyclic diacid (d) residue is present in an amount of 60 to 90 mole % and the acyclic aliphatic diacid (e) is in an amount of 10 to 40 mole %, wherein the mole percentages of (d) and (e) are based on the total moles of the diacids, (d) and (e).
- the alicyclic diacid (d) can be from 62 to 90 mole %, or from 64 to 90 mole %, or from 66 to 90 mole %, or from 68 to 90 mole % or from 70 to 90 mole %, or from 72 to 90 mole %, or from 74 to 90 mole %, or from 76 to 90 mole %, or from 78 to 90 mole %, or from 80 to 90 mole %, or from 82 to 90 mole %, or from 84 to 90 mole %, or from 86 to 90 mole %, or from 62 to 88 mole %, or from 64 to 88 mole %, or from 66 to 88 mole %, or from 68 to 88 mole % or from 70 to 88 mole %, or from 72 to 88 mole %, or from 74 to 88 mole %, or from 76 to 88 mole %, or from 78 to 88
- the acid component comprise 60 to 70 mole %, or from 62 to 67 mole % of the residues of at least one alicyclic diacid comprising an anhydride and 30 to 40 mole % residues of an acyclic alphatic diacid comprising adipic acid, succinic acid, glutaric acid and mixtures thereof, wherein the sum of (d) and (e) is 100 mole %.
- the amount of the alicyclic diacid is important because too much of (d) and the monocoat coating described hereinbelow becomes brittle, the coating becomes soft, weatherability is lowered and humidity resistance is reduced.
- too much of the acyclic aliphatic diacid (e) results in the converse of too little of (d).
- the diacid residues may further comprise from 0 to 10 mole percent of the residues of at least one monocarboxylic acid, a polybasic acid containing more that 2 carboxylic acid groups and/or an aromatic dicarboxylic acid.
- Non-limiting examples of such acids include benzoic acid, acetic acid, 2-ethylhexanoic acid, propionic acid, tert-butyl benzoic acid, and butanoic acid, trimellitic anhydride, phthalic acid, terephthalic acid, isophthalic acid, 2,6-naphthalenedicarboxylic acid, 1,3,4-butanetricarboxylic acid, 1,2,5-hexanetricarboxylic acid, and combinations thereof.
- the curable polyester contains at least 90 mole % of aliphatic diacid residues, based on the total moles of diacid residues.
- the curable, aliphatic polyester of this invention has a hydroxyl number of 50 to 450 mg KOH/g resin. Further examples of hydroxyl number are 50 to 200, or 80 to 200, or 100 to 200, or from 80 to 150, or 100 to 150.
- the curable, aliphatic polyester has an acid number of 0 to 80 mg KOH/g polyester, or 0 to 15, or 0 to 10, or 2 to 25 mg KOH/g polyester, or is less than 20, or is 5 to 15 mg KOH/g polyester, or 8 to 12 mg KOH/g polyester.
- the number average molecular weight (Mn) of the curable, aliphatic polyester is 300 g/mole to 10,000 g/mole, or 800 to 6000 g/mole, or 500 to 5000 g/mole.
- the curable, aliphatic polyester has a number average molecular weight (Mn) of from 1,000 g/mole, or 1,500 to 6,000 g/mole, or from 2,000 to 4,000 g/mole. Molecular weights are measured by gel permeation chromatography (GPC) using polystyrene equivalent molecular weight.
- the glass transition temperature (abbreviated herein as“Tg”) of the curable, aliphatic polyester is from -10°C to 15°C. Alternataivly, some additional,
- Tg ranges for the curable, aliphatic polyester are -5 to 15°C, or -5 to 10°C. It is contmeplated that the curable, aliphatic polyester can have a hydroxyl number of 50 to 250 mg potassium hydroxide per gram of polyester, an acid number of 2 to 15 mg potassium hydroxide per gram of polyester, and a number average molecular weight of 700 to 7000 g/mole, and a Tg of -10 to 15°C.
- the curable, aliphatic polyester can be prepared by heating the reactants until the desired molecular weight, acid number, or hydroxyl number is reached.
- the reaction can be monitored by the collection of water (when diacids are used as starting materials) or alcohol (when diesters are used).
- the polyester typically can be prepared at a temperature range of 150 to 250°C and at atmospheric pressure or under vacuum. In one embodiment, for example, the diacid component and diols used to make the polyester may be partially reacted before the polyol is added. Once the polyol is added to the reaction mixture, heating is continued until a target acid number is satisfied.
- the curable, aliphatic polyester can be prepared in the presence of a process solvent to help remove the water or alcohol by-products of the reaction and to promote the synthesis of the polyester resin.
- the process solvent may be any solvent known in the art as useful for the preparation of polyester polymers.
- the process solvent can be a hydrocarbon solvent.
- the process solvent can comprise an aromatic hydrocarbon such as, for example, xylene.
- the xylene can be a pure isomer, or a mixture of ortho, meta, and para isomers.
- the amount of process solvent may be determined by routine experimentation as understood by those skilled in the art.
- the process solvent can be added in amounts ranging from 0.5 to 5 weight percent, based on the total weight of reaction mixture.
- a catalyst may be used to promote the synthesis of the polyester.
- the catalyst may be any catalyst known in the art to be useful for the formation of polyester resins.
- the catalyst can be a tin catalyst, such as, for example, FASCATTM 4100 (available fromPMC Organometallix).
- the catalyst increases the rate of the polyester resin reaction, as described above, and its amount may be determined by routine experimentation as understood by those skilled in the art.
- the catalyst is added in amounts ranging from 0.01 to 1.00 weight percent based on the total weight of the reactants.
- thermosetting coating solution comprising:
- TACD 2,2,4,4-tetraalkylcyclobutane-1,3-diol
- the curable polyester contains diacid residues in an amount of at least 90 mole % of aliphatic diacid residues, based on the total moles of all diacid residues in the curable polyester, and, wherein the curable polyester has a hydroxyl number of 50 to 450 mgKOH/g of polyester, an acid number of 0 to 80 mgKOH/g, and a number average molecular weight of 300 to 10,000 g/mole of polyester; and B. from 10 to 50 weight percent, based on the total weight of the solution, of a solvent other than water.
- the thermosetting coating solution has less than 1 weight % of undissolved solids at 25°C.
- the curable, aliphatic polyester component (A) of the coating solution may include any combination of the various embodiments of diacids, diols, polyols, alicyclic and acyclic aliphatic diacids, hydroxyl numbers, and glass transition temperatures described above in accordance with the curable aliphatic polyester of the present invention.
- the thermosetting coating solution also comprises 10 to 50 weight percent, based on the total weight of components (A) and (B), of a solvent other than water.
- solvents include, but are not limited to, benzene, xylene, mineral spirits, naptha, toluene, acetone, methyl ethyl ketone, methyl n-amyl ketone, methyl isoamyl ketone, n-butyl acetate, isobutyl acetate, t-butyl acetate, n-propyl acetate, isopropyl acetate, ethyl acetate, methyl acetate, ethanol, n-propanol, isopropanol, n-butanol, sec-butanol, isobutanol, ethylene glycol monobutyl ether, propylene glycol n-butyl ether, propylene glycol methyl ether, propylene glycol monoprop
- the coating composition may also comprise reactive solvents such as, for example, diallyl phthalate, SANTOLINKTM XI-100 polyglycidyl allyl ether (available from Cytec), and others as described, for example, in U.S. Patent No’s 5,349,026 and 5,371,148.
- reactive solvents such as, for example, diallyl phthalate, SANTOLINKTM XI-100 polyglycidyl allyl ether (available from Cytec), and others as described, for example, in U.S. Patent No’s 5,349,026 and 5,371,148.
- the thermosetting coating solution can have from 15 weight % to 50 weight %, or from 25 weight % to 50 weight %, or at from 30 weight % to 50 weight %, or from 35 weight % to 50 weight %, or from 40 weight % to 50 weight %, or from 45 weight % to 50 weight % solvent, wherein the amount of solvent is based on the weight of components (A) and (B), in the coating solution.
- the solvent includes less than 3 weight % water, or less than 2 weight % water, or less than 1 weight % water, based on the weight of the thermosetting coating solution.
- the solvent contains no detectable water as determined using analytical procedures known to those skilled in the art for detecting the presence of water in an organic solvent.
- the solvent is selected from xylene, methyl n-amyl ketone, n-butyl acetate, Aromatic 100, Aromatic 150 and combinations thereof.
- the curable polyester resin in the coating solution of the present invention is essentially free of aromatic diacid residues (e.g. less than 1 mole % based on the total acid component);
- the TACD comprises 2,2,4,4-tetramethyl-1,3- cyclobutanediol;
- the diol (b) is selected from the group consisting of 2,2-dimethyl- 1,3-propanediol (neopentyl glycol), 1,2-cyclohexanedimethanol, 1,3- cyclohexanedimethanol, 1,4-cyclohexanedimethanol, 2,2,4-trimethyl-1,3-pentanediol, hydroxypivalyl hydroxypivalate, 2-methyl-1,3-propanediol, 2-butyl-2-ethyl-1,3- propanediol, 1,4-butanediol, and 1,6-hexanediol, ethylene glycol, propylene
- thermosetting monocoat coating composition comprising:
- TACD 2,2,4,4-tetraalkylcyclobutane-1,3-diol
- the curable polyester contains diacid residues in an amount of at least 90 mole % of aliphatic diacid residues, based on the total moles of all diacid residues in the curable polyester, and, wherein the curable polyester has a hydroxyl number of 50 to 450 mgKOH/g of polyester, an acid number of 0 to 80 mgKOH/g, and a number average molecular weight of 300 to 10,000 g/mole of polyester; and
- the curable, aliphatic polyester component (A) of the coating composition may include any combination of the various embodiments of diacids, diols, polyols, acid and hydroxyl numbers, and glass transition temperatures described hereinabove in accordance with the present invention, and in incorporated into the description of the monocoat coating composition by reference.
- the curable, aliphatic polyester in the thermosetting monocoat coating of the present invention is essentially free of aromatic diacid residues (e.g.
- the TACD comprises 2,2,4,4-tetramethyl- 1,3-cyclobutanediol
- the diol (b) is selected from the group consisting of 2,2- dimethyl-1,3-propanediol (neopentyl glycol), 1,2-cyclohexanedimethanol, 1,3- cyclohexanedimethanol, 1,4-cyclohexanedimethanol, 2,2,4-trimethyl-1,3-pentanediol, hydroxypivalyl hydroxypivalate, 2-methyl-1,3-propanediol, 2-butyl-2-ethyl-1,3- propanediol, 1,4-butanediol, and 1,6-hexanediol, ethylene glycol, propylene glycol, diethylene glycol, dipropylene glycol, triethylene glycol, tetraethylene glycol, polyethylene glycol and mixtures thereof;
- the curable polyester has an acid number of less than 20 mgKOH/g of polyester; and the curable polyester has a hydroxyl number of 100 to 200 mgKOH/g of polyester and the acid number is from 5 to 15 mgKOH/g of polyester.
- the curable, aliphatic polyester resin comprises a reactive functional group, typically a hydroxyl group or carboxyl group for the purpose of later reacting with a crosslinker in the thermoseting coating formulation.
- the functional group is controlled by having either excess diol or acid (from dicarboxylic acid or
- the desired crosslinking pathway will determine whether the polyester resin will be hydroxyl-terminated or carboxylic acid-terminated.
- the concept is known to those skilled in the art and described in Organic Coatings Science and Technology, 2nd ed., p. 246-257, by Z. Wicks, F. Jones, and S. Pappas, Wiley, New York, 1999, the disclosure of which is incorporated herein by reference.
- thermosetting monocoat coating composition can have from 60 to 85 weight %, or from 70 to 80 weight % of (A); and from 15 to 40 wight %, or from 20 to 30 weight % of the crosslinker (C), wherein the weight % of (A) and (C) are based on the total weight of the curable polyester (A) and the crosslinker (C).
- the crosslinker will be a compound, generally known in the art, that can react with either the carboxylic acid-terminated or hydroxyl-terminated polyester resin.
- the crosslinker can comprise at least one compound chosen from epoxides, melamines, hydroxy alkyl amides, and isocyanates.
- epoxide crosslinkers will react with a carboxylic acid-terminated polyester resin, whereas melamines, isocyanates, and isocyanurates will react with a hydroxyl-terminated polyesters.
- the crosslinker is an aminoplast or an isocyanate crosslinker.
- the aminoplast crosslinker (or cross-linking agent) is preferably a melamine or "amino" crosslinker which are well-known in the art and can be used in the coating composition of the invention.
- Such melamine-formaldehyde type cross-linking agents i.e., a cross-linking agent having a plurality of --N(CH 2 OR 3 ) 2 functional groups, wherein R 3 is C 1 –C 4 alkyl, and desirably is a methyl moiety.
- the cross-linking agent may also be a modified melamine-formaldehyde type resin such as toluene sulfonamide modified melamine-formaldehyde resins, and the like.
- the coating composition of the present invention can comprise at least one melamine compound chosen from hexamethoxymethylmelamine, tetramethoxymethylbenzoguanamine, tetramethoxymethylurea, mixed butoxy/methoxy substituted melamines and mixtures thereof.
- Some examples of commercially available melamine crosslinkers include the CYMELTM300 series and CYMELTM 1100 series melamine crosslinkers, available from Cytec Surface
- polyester to melamine weight ratio is typically from 1 to 9, or from 1.5 to 6, or 2 to 4.
- isocyanates and isocyanurates can be used as crosslinkers in accordance with the invention.
- Representative isocyanates and isocyanurates include, but are not limited to, toluene diisocyanate, isocyanurates of toluene diisocyanate, diphenylmethane 4,4'-diisocyanate, isocyanurates of 4,4'- diisocyanate, methylenebis-4,4'-isocyanatocyclohexane, isophorone diisocyanate, isocyanurates of isophorone diisocyanate, the biuret of 1,6-hexamethylene
- triphenylmethane 4,4',4"-triisocyanate tetramethyl xylene diisocyanate, metaxylene diisocyanate, polyisocyanates, 1,4-butylene diisocyanate, methylene bis (4-cyclohexyl isocyanate), isophorone diisocyanate and isocyanate-terminated adducts of ethylene glycol, 1,4-butylene glycol, trimethylol propane, or combinations thereof.
- the isocyanate is selected from 1,6-hexamethylene diisocyanate, methylene bis (4- cyclohexyl isocyanate), isophorone diisocyanate, 2,4-toluene diisocyanate, and Bayhydur® 302 (BAYER MaterialScience).
- the coating composition also can comprise isocyanate-terminated adducts of diols and polyols as crosslinkers.
- These crosslinkers are formed by reacting more than one equivalent of a diisocyanate, such as those mentioned above, with one equivalent of a diol or polyol to form a higher molecular weight isocyanate prepolymer with a isocyanate functionality of 2 to 3.
- isocyanate-terminated adducts include isocyanate crosslinkers under the
- crosslinking catalysts include carboxylic acids, sulfonic acids, tertiary amines, tertiary phosphines, tin compounds, or combinations of these compounds.
- crosslinking catalysts include p- toluenesulfonic acid, the NACURETM 155, 5076, and 1051 catalysts sold by King Industries, BYK 450, 470, available from BYK-Chemie U.S.A., methyl tolyl sulfonimide, dodecylbenzene sulfonic acid, dinonylnaphthalene sulfonic acid, and dinonylnaphthalene disulfonic acid, benzoic acid, triphenylphosphine,
- the curable, aliphatic polyester can comprise hydroxyl-terminated end groups and the crosslinker can comprise an isocyanate.
- the coating composition also can comprise at least one isocyanate crosslinking catalyst such as, for example,
- FASCATTM 4202 (dibutyltindilaurate), FASCATTM 4200 (dibutyltindiacetate, both available from Arkema), DABCOTM T-12 (available from Air Products) and K-KATTM 348, 4205, 5218, XC-6212TM non-tin catalysts (available from King Industries), and tertiary amines.
- NCO:OH ratios can be used; for example, it may be desirable to vary the NCO to OH ratio to less than 1:1 to improve flexibility or greater than 1:1 to produce harder, more chemical resistant, and more weather resistant coatings.
- the solvent borne, thermosetting coating composition has an NCO:OH ratio, on an equivalent basis, of 0.9:1.0 to 1.5:1.0.
- NCO:OH ratios 0.95:1.0 to 1.25:1.0 and 0.95:1.0 to 1.1:1.0.
- the thermosetting coating composition also comprises 10 to 85 weight percent, based on the total weight of components (A), (B), and (C) of a solvent other than water.
- solvents include, but are not limited to, benzene, xylene, mineral spirits, naptha, toluene, acetone, methyl ethyl ketone, methyl n-amyl ketone, methyl isoamyl ketone, n-butyl acetate, isobutyl acetate, t-butyl acetate, n-propyl acetate, isopropyl acetate, ethyl acetate, methyl acetate, ethanol, n-propanol, isopropanol, n- butanol, sec-butanol, isobutanol, ethylene glycol monobutyl ether, propylene glycol n- butyl ether, propylene glycol methyl ether, propylene glyco
- the coating composition may also comprise reactive solvents such as, for example, diallyl phthalate, SANTOLINKTM XI-100 polyglycidyl allyl ether (available from Cytec), and others as described, for example, in U.S. Patent No’s 5,349,026 and 5,371,148.
- the thermosetting coating composition comprises from 5 weight % up to 20 weight %, or from 5 weight % up to 25 weight %, or from 5 weight % up to 30 weight %, or from 5 weight % up to 35 weight %, or from 5 weight % up to 40 weight %, or from 5 weight % up to 45 weight %, or from 5 weight % up to 50 weight % of a solvent, based on the weight of components (A), (B), and (C) in the coating composition.
- thermosetting coating composition can comprise 25 to 35 weight percent solvent, 20 to 35 weight percent of a melamine crosslinker, and a crosslinking catalyst comprising p-toluenesulfonic acid. In another aspect, the thermosetting coating composition comprises 25 to 35 weight percent solvent and 20 to 35 weight percent hexamethoxy-methylmelamine.
- the coating composition of the instant invention may further contain at least one coating additive known in the art.
- coating additives include, but are not limited to, leveling, rheology and flow control agents such as silicones, fluorocarbons or cellulosics; extenders; plasticizers; flatting agents; pigment wetting and dispersing agents; ultraviolet (UV) absorbers; UV light stabilizers; defoaming and antifoaming agents; anti-settling, anti-sag and bodying agents; anti-skinning agents; anti-flooding and anti-floating agents; and corrosion inhibitors.
- leveling, rheology and flow control agents such as silicones, fluorocarbons or cellulosics; extenders; plasticizers; flatting agents; pigment wetting and dispersing agents; ultraviolet (UV) absorbers; UV light stabilizers; defoaming and antifoaming agents; anti-settling, anti-sag and bodying agents; anti-skinning agents; anti-flooding and
- flatting agents include, but are not limited to, synthetic silica, available from the Davison Chemical Division of W. R. Grace & Company as SYLOIDTM; polypropylene, available from Hercules Inc., as HERCOFLATTM; and synthetic silicate, available from J. M. Huber Corporation, as ZEOLEXTM.
- dispersing agents include, but are not limited to, sodium bis(tridecyl) sulfosuccinate, di(2-ethyl hexyl) sodium sulfosuccinate, sodium dihexylsulfosuccinate, sodium dicyclohexyl sulfosuccinate, diamyl sodium
- sulfosuccinate sodium dusobutyl sulfosuccinate, disodium isodecyl sulfosuccinate, disodium ethoxylated alcohol half ester of sulfosuccinic acid, disodium alkyl amido polyethoxy sulfosuccinate, tetra-sodium N-(1,2-dicarboxyethyl)-N-octadecyl sulfosuccinamate, disodium N-octasulfosuccinamate, sulfated ethoxylated
- nonylphenol 2-amino-2-methyl-1-propanol, and the like.
- viscosity, suspension, and flow control agents examples include, but are not limited to, polyaminoamide phosphate, high molecular weight carboxylic acid salts of polyamine amides, and alkylene amine salts of an unsaturated fatty acid, all available from BYK Chemie USA as ANTI TERRATM. Further examples include, but are not limited to, polysiloxane copolymers, polyacrylate solution, cellulose esters, hydroxyethyl cellulose, hydroxypropyl cellulose, polyamide wax, polyolefin wax, hydroxypropyl methyl cellulose, polyethylene oxide, and the like.
- BUBREAKTM available from Buckman Laboratories Inc.
- BYKTM available from BYK Chemie
- U.S.A. FOAMASTERTM
- NOPCOTM available from Henkel Corp./Coating Chemicals
- DREWPLUSTM available from the Drew Industrial Division of Ashland Chemical Company
- TROYSOLTM Several proprietary antifoaming agents are commercially available and include, but are not limited to, BUBREAKTM, available from Buckman Laboratories Inc., BYKTM, available from BYK Chemie, U.S.A., FOAMASTERTM and NOPCOTM, available from Henkel Corp./Coating Chemicals, DREWPLUSTM, available from the Drew Industrial Division of Ashland Chemical Company, TROYSOLTM and
- TROYKYDTM available from Troy Chemical Corporation
- SAGTM available from Union Carbide Corporation
- UV absorbers examples include, but are not limited to, substituted benzophenone, substituted benzotriazoles, hindered amines, hindered benzoates, phenols, and phosphites, some of which are available from Cytec Specialty Chemicals as CYASORB® UV, and from Ciba Specialty Chemicals as TINUVIN®, CHIMASSORB®, IRGANOX® and IRGAFOS®;
- thermosetting coating compositon can contain IRGANOX® 1010 antioxidant, available from Ciba Specialty Chemicals.
- a coating composition optionally may contain at least one of the above-described additives and at least one pigment.
- the solvent borne thermosetting coating composition also may comprise at least one pigment.
- the pigment is present in an amount of 20 to 60 weight percent, based on the total weight of the coating composition.
- pigments include those generally recognized by persons of ordinary skill in the art of surface coatings.
- the pigment may be a typical organic or inorganic pigment, especially those set forth by the Colour Index, 3rd ed., 2nd Rev., 1982, published by the Society of Dyers and Colourists in association with the American Association of Textile Chemists and Colorists.
- pigments include, but are not limited to, titanium dioxide, barytes, clay, calcium carbonate, CI Pigment White 6 (titanium dioxide), CI Pigment Red 101 (red iron oxide), CI Pigment Yellow 42, CI Pigment Blue 15,15:1,15:2,15:3,15:4 (copper phthalocyanines); CI Pigment Red 49:1 and CI Pigment Red 57:1. Colorants such as, for example, phthalocyanine blue, molybdate orange, or carbon black also may be added to the coating composition.
- the solvent borne, thermosetting coating formulations can contain titanium dioxide as the pigment.
- thermosetting coating composition of this invention may optionally comprise a thermosetting acrylic ("TSA") resins.
- TSA resins are typically prepared by free radical polymerization in bulk or in a solvent.
- Initiators are of the free radical type and are usually organic peroxides or azo compounds, such as benzoyl peroxide, t-butyl hydroperoxide, t-butyl peroxide, t-butyl peroxybenzoate,
- the reaction is preferably carried out at the reflux temperature of the solvent used, which is generally higher than the thermal decomposition temperature of the initiator employed.
- the acrylic resin is composed of ethylenically unsaturated monomers that include acrylate, methacrylate, styrene, (meth) acrylic acid, and vinyl esters. They further contain hydroxyl, epoxy, carboxyl, blocked-phenol and/or acetoacetoxy functional groups. Suitable examples of preparation methods and components of the acrylic resin include those known in the art including, but not limited to, those described above, and in Resins for Surface Coatings, Vol. II, p. 121-210, ed. by P.K.T. Oldring and G.
- hydroxyl functional TSA resins examples include the MACRYNALTM series, available from Cytec Surface Specialties; the ACRYLOIDTM series, available from Rohm and Haas; and the JONCRYLTM series, available from BASF Corporation.
- MACRYNALTM SM 515/70BAC available from Cytec Surface Specialties.
- the curable, aliphatic polyester and the TSA resin can be blended together.
- the weight percent of polyester in the blend is 5 to 50 weight %, or can be from 10 to 40 weight percent, or may be from 15 to 30 weight percent.
- thermosetting coating composition and additives can be formulated into coating that contains 40 to 90% non-volatiles. After formulation, the coating composition can be applied to a substrate or article using method and techniques known to those skilled in the coating art.
- the substrate can be any common substrate such as paper; polymer films such as polyethylene or polypropylene; wood; metals such as aluminum, steel or galvanized sheeting; glass; urethane elastomers; primed (painted) substrates; and the like.
- the substrate is a metal, such as iron or aluminum, that has been coated with the monocoat coating composition described herein, heated to a predetermined temperature and for a predetermined amount of time to produce a cured thermosetting coating on the substrate.
- the metal is at least one surface of an automobile.
- the cured coating has an impact resistance of greater than 35 as determined in accordance with ASTM 4366.
- the cured coating can also have an impact resistance of from 36 to 200, or from 50 to 200, or from 60 to 200, or from 50 to 150, or from 60 to 125 as determined in accordance with ASTM 4366.
- the cured coating has a gloss retention after abrasion, based on ASTM D 6279, of greater than 50%, or greater than 55%, or greater than 60%, or greater than 70%.
- the cured coating has a gloss retention on exposure to artificial weather, based on SAE J2527, of greater than 85% after 1000 hours, or greater than 85% after 1500 hours, or greater than 85% after 2000 hours, or greater than 85% after 2500 hours, or greater than 85% after 3000 hours, or greater than 85% after 3500 hours, or greater than 85% after 4000 hours.
- thermosetting monocoat coating composition can be coated onto a substrate using techniques known in the art. Accordingly, another aspect of the present invention is a method for applying a thermosetting monocoat coating composition to an article or substrate. The method includes the steps of:
- thermosetting monocoat coating composition comprising:
- TACD 2,2,4,4-tetraalkylcyclobutane-1,3-diol
- the curable polyester contains diacid residues in an amount of at least 90 mole % of aliphatic diacid residues, based on the total moles of all diacid residues in the curable polyester, and, wherein the curable polyester has a hydroxyl number of 50 to 450 mgKOH/g of polyester, an acid number of 0 to 80 mgKOH/g, and a number average molecular weight of 300 to 10,000 g/mole of polyester;
- thermosetting monocoat coating composition applying the thermosetting monocoat coating composition to the substrate to produce a coated substrate
- thermosetting coating applying heat to the coated substrate to a predetermined temperature and for a predetermined time to produce a cured thermosetting coating.
- the substrate can be paper; polymer films such as polyethylene or polypropylene; wood; metals such as aluminum, steel or galvanized sheeting; glass; urethane elastomers; primed (painted) substrates; and the like.
- thermosetting monocoat coating composition is as described above, the disclosure of which is incorporated into this aspect of the invention by reference.
- the thermosetting monocoat coating composition can be applid to substrate using techniques known to those skilled in the art.
- the thermosetting monocoat coating composition can be applied by brush application, spraying, draw- down, roll-coating, to a thickness of 0.5 to 4 mils of wet coating onto the substrate.
- Methods for spraying the monocoat coating composition onto the substrate include high volume low pressure (HVLP), low volume low pressure (LVLP), rotational bell or rotary atomizer; hot spray, airless spraying and air assisted airless spraying systems.
- the coating can be cured at ambient (room) temperature or heated in a forced air oven to a temperature of 35°C to 400°C, or 50°C to 200°C, or 60°C to 175°C, or 80°C to 175°C, or 50°C to 175°C., for a period of from 5 seconds to 5 hours.
- the time necessary to cure the coating at the aforementioned temperatures can be from 5 minutes to 5 hours, or from 10 minutes to 4 hours; or from 20 minutes to 3 hours, or from 30 minutes to 1 hour. However, it is also contemplated that the cure time will be from 5 minutes to 90 minutes.
- the cured coating on the substrate is then allowed to cool.
- a curable, aliphatic polyester comprising residues of:
- hydroxyl component comprising the residues of:
- TACD 2,2,4,4-tetraalkylcyclobutane-1,3-diol
- diacid component comprising the residues of: d. from 60 to 90 mole %, based on the total moles of the diacids of an alicyclic diacid;
- the curable polyester contains diacid residues in an amount of at least 90 mole % of aliphatic diacid residues, based on the total moles of all diacid residues in the curable polyester, and, wherein the curable polyester has a hydroxyl number of 50 to 450 mgKOH/g of polyester, an acid number of 0 to 80 mgKOH/g, and a number average molecular weight of 300 to 10,000 g/mole of polyester.
- the diacid can be essentially free of aromatic diacid residues.
- the TACD comprises 2,2,4,4-tetramethyl-1,3- cyclobutanediol.
- the diol (b) is selected from the group consisting of 2,2-dimethyl-1,3-propanediol (neopentyl glycol), 1,2- cyclohexanedimethanol, 1,3-cyclohexanedimethanol, 1,4-cyclohexanedimethanol, 2,2,4-trimethyl-1,3-pentanediol, hydroxypivalyl hydroxypivalate, 2-methyl-1,3- propanediol, 2-butyl-2-ethyl-1,3-propanediol, 1,4-butanediol, and 1,6-hexanediol, ethylene glycol, propylene glycol, diethylene glycol, dipropylene glycol, triethylene glycol, tetraethylene glycol, polyethylene glycol and mixtures thereof.
- 2,2-dimethyl-1,3-propanediol neopentyl glycol
- the diol (b) is selected from the group consisting of 2,2-dimethyl-1,3-propanediol (neopentyl glycol), 1,2- cyclohexanedimethanol, 1,3-cyclohexanedimethanol, 1,4- cyclohexanedimethanol, 2,2,4-trimethyl-1,3-pentanediol, hydroxypivalyl hydroxypivalate, 2-methyl-1,3- propanediol, 2-butyl-2-ethyl-1,3-propanediol, 1,4-butanediol, 1,6-hexanediol and mixtures thereof.
- At least 15 mole % of the diol (b) residues is neopentyl glycol based on the total moles of diol (b).
- the molar ratio of (b):(a) is from 1.3:1 to 2.5:1.
- the molar ratio of (b):(a) is from 1.5:1 to 2.0:1.
- the molar ratio of (b):(a) is from 1.1:1 to 1.8:1.
- the polyol (c) is one or more selected from the group consisting of 1,1,1-trimethylolpropane (TMP), 1,1,1-trimethylolethane, glycerin, and pentaerythritol.
- TMP 1,1,1-trimethylolpropane
- glycerin 1,1,1-trimethylolethane
- pentaerythritol pentaerythritol
- the alicyclic diacid (d) is selected from the group consisting of hexahydrophthalic anhydride (HHPA), tetrahydrophthalic anhydride, tetrachlorophthalic anhydride, 5-norbornene-2,3-dicarboxylic anhydride, 5-norbornene-2,3-dicarboxylic acid, 2,3-norbornanedicarboxylic acid, 2,3- norbornanedicarboxylic acid anhydride, and mixtures thereof.
- HHPA hexahydrophthalic anhydride
- tetrahydrophthalic anhydride tetrahydrophthalic anhydride
- tetrachlorophthalic anhydride tetrahydrophthalic anhydride
- 5-norbornene-2,3-dicarboxylic anhydride 5-norbornene-2,3-dicarboxylic acid
- 2,3-norbornanedicarboxylic acid 2,3- norborn
- the curable polyester of claim 1 wherein the alicyclic diacid (d) comprises hexahydrophthalic anhydride.
- the acyclic aliphatic diacid (e) is selected from the group consisting of adipic acid, maleic anhydride, maleic acid, fumaric acid, itaconic anhydride, succinic acid, succinic anhydride, glutaric acid, itaconic acid, citraconic anhydride, citraconic acid, dodecanedioic acid, sebacic acid, azelaic acid, and mixtures thereof.
- the acyclic aliphatic diacid (e) comprises adipic acid.
- (a) comprises from 30 to 40 mole % 2,2,4,4- tetramethyl-1,3-cyclobutanediol and (b) comprises from 60 to 70 mole % of a diol selected from the group consisting of 2,2-dimethyl-1,3-propanediol, 1,2- cyclohexanedimethanol, 1,3-cyclohexanedimethanol, 1,4- cyclohexanedimethanol, 2,2,4-trimethyl-1,3-pentanediol, hydroxypivalyl hydroxypivalate, 2-methyl-1,3- propanediol, 2-butyl-2-ethyl-1,3-propanediol, 1,4-butanediol, 1,6-hexanediol and mixtures thereof, wherein the mole % is based on the total moles of (a) and (b).
- the diacid component comprise 60 to 70 mole % of the residues of at least one alicyclic diacid comprising an anhydride and 32 to 38 mole % residues of an acyclic alphatic diacid comprising adipic acid, succinic anhydride,succinic acid, glutaric acid and mixtures thereof, and, wherein the curable polyester is obtained with no or less than 3 mole% acids having a carboxylic acid functionality of greater than 2 based on the total moles of all carboxylic acid compound residues.
- the comprising 20 to 30 mole % residues of (c), based on the total moles of the diols and polyol, (a), (b), and (c).
- the comprising from 62 to 67 mole % residues of (d), based on based on the total moles of the diacids (d) and (e).
- the acid number is less than 20 mgKOH/g of polyester.
- the hydroxyl number is of 100 to 200 mgKOH/g of polyester and the acid number is from 5 to 15 mgKOH/g of polyester.
- thermosetting coating solution comprising:
- TACD 2,2,4,4-tetraalkylcyclobutane-1,3-diol
- diacid component comprising the residues of:
- the curable polyester contains diacid residues in an amount of at least 90 mole % of aliphatic diacid residues, based on the total moles of all diacid residues in the curable polyester, and, wherein the curable polyester has a hydroxyl number of 50 to 450 mgKOH/g of polyester, an acid number of 0 to 80 mgKOH/g, and a number average molecular weight of 300 to 10,000 g/mole of polyester; and
- B from 10 to 50 weight percent, based on the total weight of the solution, of a solvent other than water.
- the solution has less than 1 weight % of undissolved solids.
- the diacid is essentially free of aromatic diacid residues.
- the TACD comprises 2,2,4,4-tetramethyl-1,3- cyclobutanediol.
- the said diol (b) is selected from the group consisting of 2,2-dimethyl-1,3-propanediol (neopentyl glycol), 1,2- cyclohexanedimethanol, 1,3-cyclohexanedimethanol, 1,4-cyclohexanedimethanol, 2,2,4-trimethyl-1,3-pentanediol, hydroxypivalyl hydroxypivalate, 2-methyl-1,3- propanediol, 2-butyl-2-ethyl-1,3-propanediol, 1,4-butanediol, and 1,6-hexanediol, ethylene glycol, propylene glycol, diethylene glycol, dipropylene glycol, triethylene glycol, tetraethylene glycol, polyethylene glycol and mixtures thereof.
- the said diol (b) is selected from the group consisting of 2,2-dimethyl-1,3-propanediol (neopentyl glycol), 1,2- cyclohexanedimethanol, 1,3-cyclohexanedimethanol, 1,4- cyclohexanedimethanol, 2,2,4-trimethyl-1,3-pentanediol, hydroxypivalyl hydroxypivalate, 2-methyl-1,3- propanediol, 2-butyl-2-ethyl-1,3-propanediol, 1,4-butanediol, 1,6-hexanediol and mixtures thereof.
- the molar ratio of (b):(a) is from 1.1:1 to 2.5:1.
- the molar ratio of (b):(a) is from 1.1:1 to 1.8:1.
- the polyol (c) is one or more selected from the group consisting of 1,1,1-trimethylolpropane (TMP), 1,1,1-trimethylolethane, glycerin, and pentaerythritol.
- TMP 1,1,1-trimethylolpropane
- glycerin 1,1,1-trimethylolethane
- pentaerythritol pentaerythritol
- the alicyclic diacid (d) is selected from the group consisting of hexahydrophthalic anhydride (HHPA), tetrahydrophthalic anhydride, tetrachlorophthalic anhydride, 5-norbornene-2,3-dicarboxylic anhydride, 5-norbornene-2,3-dicarboxylic acid, 2,3-norbornanedicarboxylic acid, 2,3- norbornanedicarboxylic acid anhydride, and mixtures thereof.
- HHPA hexahydrophthalic anhydride
- tetrahydrophthalic anhydride tetrahydrophthalic anhydride
- tetrachlorophthalic anhydride tetrahydrophthalic anhydride
- 5-norbornene-2,3-dicarboxylic anhydride 5-norbornene-2,3-dicarboxylic acid
- 2,3-norbornanedicarboxylic acid 2,3- norborn
- the alicyclic diacid (d) comprises
- the acyclic aliphatic diacid (e) is selected from the group consisting of adipic acid, maleic anhydride, maleic acid, fumaric acid, itaconic anhydride, itaconic acid, citraconic anhydride, citraconic acid, dodecanedioic acid, sebacic acid, azelaic acid, and mixtures thereof.
- the acyclic aliphatic diacid (e) comprises adipic acid.
- the (a) comprises from 30 to 40 mole % 2,2,4,4-tetramethyl-1,3-cyclobutanediol and (b) comprises from 60 to 70 mole % of a diol selected from the group consisting of 2,2-dimethyl-1,3-propanediol, 1,2- cyclohexanedimethanol, 1,3-cyclohexanedimethanol, 1,4- cyclohexanedimethanol, 2,2,4-trimethyl-1,3-pentanediol, hydroxypivalyl hydroxypivalate, 2-methyl-1,3- propanediol, 2-butyl-2-ethyl-1,3-propanediol, 1,4-butanediol, 1,6-hexanediol and mixtures thereof, wherein the mole % is based on the total moles of (a) and (b).
- the diacid residues comprises 60 to 70 mole % of the residues of at least one alicyclic diacid comprising an anhydride and 32 to 38 mole % residues of an acyclic alphatic diacid comprising adipic acid, succinic acid, glutaric acid and mixtures thereof.
- the curable polyester has an acid number of less than 20 mgKOH/g of polyester.
- the curable polyester has a hydroxyl number of 100 to 200 mgKOH/g of polyester and the acid number is from 5 to 15 mgKOH/g of polyester.
- the solvent comprises less than 3 weight % water, based on the weight of the solution.
- the solvent is selected from the group consisting of benzene, xylene, mineral spirits, naptha, toluene, acetone, methyl ethyl ketone, methyl n-amyl ketone, methyl isoamyl ketone, n-butyl acetate, isobutyl acetate, t-butyl acetate, n-propyl acetate, isopropyl acetate, ethyl acetate, methyl acetate, ethanol, n-propanol, isopropanol, n-butanol, sec-butanol, isobutanol, ethylene glycol monobutyl ether, propylene glycol n-butyl ether, propylene glycol methyl ether, propylene glycol monopropyl ether, dipropylene glycol methyl ether, diethylene glycol monobutyl ether, trimethylpent
- Aromatic 100 monoisobutyrate
- Aromatic 150 and combinations thereof.
- the solvent comprises xylene, methyl amyl ketone, n-butyl acetate, Aromatic 100, and/or Aromatic 150.
- thermosetting monocoat coating composition comprising:
- TACD 2,2,4,4-tetraalkylcyclobutane-1,3-diol
- diacid component comprising the residues of:
- the curable polyester contains diacid residues in an amount of at least 90 mole % of aliphatic diacid residues, based on the total moles of all diacid residues in the curable polyester, and, wherein the curable polyester has a hydroxyl number of 50 to 450 mgKOH/g of polyester, an acid number of 0 to 80 mgKOH/g, and a number average molecular weight of 300 to 10,000 g/mole of polyester; and
- B from 10 to 50 weight percent, based on the total weight of the coating composition, of a solvent other than water; and C. from 10 to 50 weight percent, based on the total weight of (A) and (C), of a crosslinker comprising an aminoplast and/or isocyanate.
- the diacid is essentially free of aromatic diacid residues.
- the TACD comprises 2,2,4,4-tetramethyl-1,3- cyclobutanediol.
- the diol (b) is selected from the group consisting of 2,2-dimethyl-1,3-propanediol (neopentyl glycol), 1,2- cyclohexanedimethanol, 1,3-cyclohexanedimethanol, 1,4-cyclohexanedimethanol, 2,2,4-trimethyl-1,3-pentanediol, hydroxypivalyl hydroxypivalate, 2-methyl-1,3- propanediol, 2-butyl-2-ethyl-1,3-propanediol, 1,4-butanediol, and 1,6-hexanediol, ethylene glycol, propylene glycol, diethylene glycol, dipropylene glycol, triethylene glycol, tetraethylene glycol, polyethylene glycol and mixtures thereof.
- 2,2-dimethyl-1,3-propanediol neopentyl glycol
- the diol (b) is selected from the group consisting of 2,2-dimethyl-1,3-propanediol (neopentyl glycol), 1,2- cyclohexanedimethanol, 1,3-cyclohexanedimethanol, 1,4- cyclohexanedimethanol, 2,2,4-trimethyl-1,3-pentanediol, hydroxypivalyl hydroxypivalate, 2-methyl-1,3- propanediol, 2-butyl-2-ethyl-1,3-propanediol, 1,4-butanediol, 1,6-hexanediol and mixtures thereof.
- the diol (b) includes at least 15 mole % neopentyl glycol.
- the molar ratio of (b):(a) is from 1.1:1 to 2.5:1.
- the molar ratio of (b):(a) is from 1.5:1 to 2.0:1.
- the molar ratio of (b):(a) is from 1.1:1 to 1.8:1.
- the polyol (c) is one or more selected from the group consisting of 1,1,1-trimethylolpropane (TMP), 1,1,1-trimethylolethane, glycerin, and pentaerythritol.
- TMP 1,1,1-trimethylolpropane
- glycerin 1,1,1-trimethylolethane
- pentaerythritol pentaerythritol
- the alicyclic diacid (d) is selected from the group consisting of hexahydrophthalic anhydride (HHPA), tetrahydrophthalic anhydride, tetrachlorophthalic anhydride, 5-norbornene-2,3-dicarboxylic anhydride, 5-norbornene-2,3-dicarboxylic acid, 2,3-norbornanedicarboxylic acid, 2,3- norbornanedicarboxylic acid anhydride, and mixtures thereof.
- HHPA hexahydrophthalic anhydride
- tetrahydrophthalic anhydride tetrahydrophthalic anhydride
- tetrachlorophthalic anhydride tetrahydrophthalic anhydride
- 5-norbornene-2,3-dicarboxylic anhydride 5-norbornene-2,3-dicarboxylic acid
- 2,3-norbornanedicarboxylic acid 2,3- norborn
- the alicyclic diacid (d) comprises
- the acyclic aliphatic diacid (e) is selected from the group consisting of adipic acid, maleic anhydride, maleic acid, fumaric acid, itaconic anhydride, itaconic acid, citraconic anhydride, citraconic acid, dodecanedioic acid, sebacic acid, azelaic acid, and mixtures thereof.
- the acyclic aliphatic diacid (e) comprises adipic acid.
- the (a) comprises from 30 to 40 mole % 2,2,4,4-tetramethyl-1,3-cyclobutanediol and (b) comprises from 60 to 70 mole % of a diol selected from the group consisting of 2,2-dimethyl-1,3-propanediol, 1,2- cyclohexanedimethanol, 1,3-cyclohexanedimethanol, 1,4- cyclohexanedimethanol, 2,2,4-trimethyl-1,3-pentanediol, hydroxypivalyl hydroxypivalate, 2-methyl-1,3- propanediol, 2-butyl-2-ethyl-1,3-propanediol, 1,4-butanediol, 1,6-hexanediol and mixtures thereof, wherein the mole % is based on the total moles of (a) and (b).
- the diacid residues comprise 60 to 70 mole % of the residues of at least one alicyclic diacid comprising an anhydride and 32 to 38 mole % residues of an acyclic alphatic diacid comprising adipic acid, succinic acid, glutaric acid and mixtures thereof.
- the comprising from 62 to 67 mole % residues of (d), based on based on the total moles of the diacids (d) and (e).
- the curable polyester has an acid number of less than 20 mgKOH/g of polyester.
- the curable polyester has a hydroxyl number of 100 to 200 mgKOH/g of polyester and the acid number is from 5 to 15 mgKOH/g of polyester.
- the comprising from 60 to 85 weight % of the curable, aliphatic polyester (A) and from 15 to 40 wight %, of the crosslinker (C), wherein the weight % of (A) and (C) are based on the weight of the curable polyester (A) and the crosslinker (C).
- the crosslinker (B) is an aminoplast selected from the group comprising hexamethoxymethylmelamine, tetramethoxymethylbenzo- guanamine, tetramethoxymethylurea, hexabutoxymethylmelamine, mixed
- the crosslinker (C) comprises
- the crosslinker (C) is selected from the group consisting of isocyanates and isocyanurates.
- the crosslinker (C) is selected from the group consisting of toluene diisocyanate, isocyanurates of toluene diisocyanate,
- diphenylmethane 4,4'-diisocyanate isocyanurates of 4,4'-diisocyanate, methylenebis- 4,4'-isocyanatocyclohexane, isophorone diisocyanate, isocyanurates of isophorone diisocyanate, the biuret of 1,6-hexamethylene diisocyanate, 1,6-hexamethylene diisocyanate, isocyanurates of 1,6-hexamethylene diisocyanate, 1,4-cyclohexane diisocyanate, p-phenylene diisocyanate, and triphenylmethane 4,4',4"-triisocyanate, tetramethyl xylene diisocyanate, metaxylene diisocyanate, polyisocyanates, 1,4- butylene diisocyanate, methylene bis (4-cyclohexyl isocyanate), isophorone diisocyanate and isocyanate-termin
- the coating has an NCO:OH ratio, on an equivalent basis, of 0.9:1.0 to 1.5:1.0.
- a an additive or agent selectived from the group consisting of leveling, rheology and flow control agents, extenders, plasticizers, flatting agents, pigment wetting and dispersing agents, ultraviolet (UV) absorbers, UV light stabilizers, defoaming and antifoaming agents, anti-settling, anti-sag and bodying agents, anti-skinning agents, anti-flooding and anti- floating agents, corrosion inhibitors and mixtures thereof.
- UV ultraviolet
- the solvent comprises less than 3 weight % water, based on the weight of the solution.
- the solvent is selected from the group consisting of benzene, xylene, mineral spirits, naptha, toluene, acetone, methyl ethyl ketone, methyl n-amyl ketone, methyl isoamyl ketone, n-butyl acetate, isobutyl acetate, t-butyl acetate, n-propyl acetate, isopropyl acetate, ethyl acetate, methyl acetate, ethanol, n-propanol, isopropanol, n-butanol, sec-butanol, isobutanol, ethylene glycol monobutyl ether, propylene glycol n-butyl ether, propylene glycol methyl ether, propylene glycol monopropyl,
- Aromatic 100 monoisobutyrate
- Aromatic 150 and combinations thereof.
- the solvent comprises xylene, methyl amyl ketone, n-butyl acetate, Aromatic 100, and/or Aromatic 150.
- any of the above embodiments further comprising applying said coating to a substrate and applying heat for a predetermined time and temperature to produce a cured coating, wherein the cured coating has an impact resistance of greater than 35 as determined in accordance with ASTM 4366.
- the cured coating an impact resistance of from 36 to 200, as determined in accordance with ASTM 4366.
- the cured coating has an impact resistance of from 50 to 200, as determined in accordance with ASTM 4366.
- the cured coating has an impact resistance of from 60 to 200, as determined in accordance with ASTM 4366.
- the cured coating has a gloss retention, based on ASTM D 6279, of greater than 50%.
- the cured coating has a gloss retention, based on ASTM D 6279, of greater than 55%.
- the cured coating has a gloss retention, based on ASTM D 6279, of greater than 60%.
- the cured coating has a gloss retention, based on ASTM D 6279, of greater than 70%.
- the cured coating has a gloss retention, based on SAE J2527, of greater than 85% after 1000 hours. In any of the above embodiments, the cured coating has a gloss retention, based on SAE J2527, of greater than 85% after 1500 hours.
- the cured coating has a gloss retention, based on SAE J2527, of greater than 85% after 2000 hours.
- the cured coating has a gloss retention, based on SAE J2527, of greater than 85% after 2500 hours.
- the cured coating has a gloss retention, based on SAE J2527, of greater than 85% after 3000 hours.
- the cured coating has a gloss retention, based on SAE J2527, of greater than 85% after 3500 hours.
- the cured coating has a gloss retention, based on SAE J2527, of greater than 85% after 4000 hours.
- thermosetting monocoat coating composition to a substrate comprising:
- thermosetting monocoat coating composition comprising:
- TACD 2,2,4,4-tetraalkylcyclobutane-1,3-diol
- diacid component comprising the residues of:
- the curable polyester contains diacid residues in an amount of at least 90 mole % of aliphatic diacid residues, based on the total moles of all diacid residues in the curable polyester, and, wherein the curable polyester has a hydroxyl number of 50 to 450 mgKOH/g of polyester, an acid number of 0 to 80 mgKOH/g, and a number average molecular weight of 300 to 10,000 g/mole of polyester;
- thermosetting monocoat coating composition from 10 to 50 weight percent, based on the total weight of (A) and (C), of a crosslinker comprising an aminoplast and/or isocyanate; III. applying said thermosetting monocoat coating composition to said substrate to produce a coated substrate; and
- the diacid is essentially free of aromatic diacid residues.
- the TACD is 2,2,4,4-tetramethyl-1,3- cyclobutanediol.
- the diol (b) is selected from the group consisting of 2,2-dimethyl-1,3-propanediol (neopentyl glycol), 1,2- cyclohexanedimethanol, 1,3-cyclohexanedimethanol, 1,4-cyclohexanedimethanol, 2,2,4-trimethyl-1,3-pentanediol, hydroxypivalyl hydroxypivalate, 2-methyl-1,3- propanediol, 2-butyl-2-ethyl-1,3-propanediol, 1,4-butanediol, and 1,6-hexanediol, ethylene glycol, propylene glycol, diethylene glycol, dipropylene glycol, triethylene glycol, tetraethylene glycol, polyethylene glycol and mixtures thereof.
- 2,2-dimethyl-1,3-propanediol neopentyl glycol
- the diol (b) is selected from the group consisting of 2,2-dimethyl-1,3-propanediol (neopentyl glycol), 1,2- cyclohexanedimethanol, 1,3-cyclohexanedimethanol, 1,4- cyclohexanedimethanol, 2,2,4-trimethyl-1,3-pentanediol, hydroxypivalyl hydroxypivalate, 2-methyl-1,3- propanediol, 2-butyl-2-ethyl-1,3-propanediol, 1,4-butanediol, 1,6-hexanediol and mixtures thereof.
- the diol (b) includes at least 15 mole % neopentyl glycol.
- the molar ratio of (b):(a) is from 1.1:1 to 2.5:1.
- the molar ratio of (b):(a) is from 1.5:1 to 2.0:1.
- the molar ratio of (b):(a) is from 1.1:1 to 1.8:1.
- the polyol (c) is one or more selected from the group consisting of 1,1,1-trimethylolpropane (TMP), 1,1,1-trimethylolethane, glycerin, and pentaerythritol.
- TMP 1,1,1-trimethylolpropane
- glycerin 1,1,1-trimethylolethane
- pentaerythritol pentaerythritol
- the alicyclic diacid (d) is selected from the group consisting of hexahydrophthalic anhydride (HHPA), tetrahydrophthalic anhydride, tetrachlorophthalic anhydride, 5-norbornene-2,3-dicarboxylic anhydride, 5-norbornene-2,3-dicarboxylic acid, 2,3-norbornanedicarboxylic acid, 2,3- norbornanedicarboxylic acid anhydride, and mixtures thereof.
- HHPA hexahydrophthalic anhydride
- tetrahydrophthalic anhydride tetrahydrophthalic anhydride
- tetrachlorophthalic anhydride tetrahydrophthalic anhydride
- 5-norbornene-2,3-dicarboxylic anhydride 5-norbornene-2,3-dicarboxylic acid
- 2,3-norbornanedicarboxylic acid 2,3- norborn
- the alicyclic diacid (d) comprises
- the acyclic aliphatic diacid (e) is selected from the group consisting of adipic acid, maleic anhydride, maleic acid, fumaric acid, itaconic anhydride, itaconic acid, citraconic anhydride, citraconic acid, dodecanedioic acid, sebacic acid, azelaic acid, and mixtures thereof.
- the acyclic aliphatic diacid (e) comprises adipic acid.
- the (a) comprises from 30 to 40 mole % 2,2,4,4-tetramethyl-1,3-cyclobutanediol and (b) comprises from 60 to 70 mole % of a diol selected from the group consisting of 2,2-dimethyl-1,3-propanediol, 1,2- cyclohexanedimethanol, 1,3-cyclohexanedimethanol, 1,4- cyclohexanedimethanol, 2,2,4-trimethyl-1,3-pentanediol, hydroxypivalyl hydroxypivalate, 2-methyl-1,3- propanediol, 2-butyl-2-ethyl-1,3-propanediol, 1,4-butanediol, 1,6-hexanediol and mixtures thereof, wherein the mole % is based on the total moles of (a) and (b).
- the diacid residues comprise 60 to 70 mole % of the residues of at least one alicyclic diacid comprising an anhydride and 32 to 38 mole % residues of an acyclic alphatic diacid comprising adipic acid, succinic acid, glutaric acid and mixtures thereof.
- the monocoat coating composition comprises 20 to 30 mole % residues of (c), based on the total moles of the diols and polyol, (a), (b), and (c).
- the monocoat coating composition comprises from 62 to 67 mole % residues of (d), based on based on the total moles of the diacids (d) and (e).
- the polyester in said monocoat coating composition has an acid number of less than 20 mgKOH/g of polyester.
- the polyester in said monocoat coating has a hydroxyl number of 100 to 200 mgKOH/g of polyester and the acid number is from 5 to 15 mgKOH/g of polyester.
- the monocoat coating composition comprises from 60 to 85 weight % of the curable, aliphatic polyester (A) and from 15 to 40 wight %, of the crosslinker (C), wherein the weight % of (A) and (C) are based on the weight of the curable polyester (A) and the crosslinker (C).
- the crosslinker (C) is an aminoplast selected from the group comprising hexamethoxymethylmelamine, tetramethoxymethylbenzo- guanamine, tetramethoxymethylurea, hexabutoxymethylmelamine, mixed
- crosslinker (C) comprisies
- the crosslinker (C) is selected from the group consisting of isocyanates and isocyanurates.
- the crosslinker (C) is selected from the group consisting of toluene diisocyanate, isocyanurates of toluene diisocyanate,
- diphenylmethane 4,4'-diisocyanate isocyanurates of 4,4'-diisocyanate, methylenebis- 4,4'-isocyanatocyclohexane, isophorone diisocyanate, isocyanurates of isophorone diisocyanate, the biuret of 1,6-hexamethylene diisocyanate, 1,6-hexamethylene diisocyanate, isocyanurates of 1,6-hexamethylene diisocyanate, 1,4-cyclohexane diisocyanate, p-phenylene diisocyanate, and triphenylmethane 4,4',4"-triisocyanate, tetramethyl xylene diisocyanate, metaxylene diisocyanate, polyisocyanates, 1,4- butylene diisocyanate, methylene bis (4-cyclohexyl isocyanate), isophorone diisocyanate and isocyanate-termin
- the monocoat coating composition has an NCO:OH ratio, on an equivalent basis, of 0.9:1.0 to 1.5:1.0.
- the monocoat coating composition further comprises a an additive or agent selectived from the group consisting of leveling, rheology and flow control agents, extenders, plasticizers, flatting agents, pigment wetting and dispersing agents, ultraviolet (UV) absorbers, UV light stabilizers, defoaming and antifoaming agents, anti-settling, anti-sag and bodying agents, anti- skinning agents, anti-flooding and anti-floating agents, corrosion inhibitors and mixtures thereof.
- a an additive or agent selectived from the group consisting of leveling, rheology and flow control agents, extenders, plasticizers, flatting agents, pigment wetting and dispersing agents, ultraviolet (UV) absorbers, UV light stabilizers, defoaming and antifoaming agents, anti-settling, anti-sag and bodying agents, anti- skinning agents, anti-flooding and anti-floating agents, corrosion inhibitors and mixtures thereof.
- the cured coating has an impact resistance of greater than 35 as determined in accordance with ASTM 4366.
- the cured coating has an impact resistance of from 36 to 200, as determined in accordance with ASTM 4366.
- the cured coating has an impact resistance of from 50 to 200, as determined in accordance with ASTM 4366.
- the cured coating has an impact resistance of from 60 to 200, as determined in accordance with ASTM 4366.
- the cured coating has a gloss retention, based on ASTM D 6279, of greater than 50%.
- the cured coating has a gloss retention, based on ASTM D 6279, of greater than 55%.
- the cured coating has a gloss retention, based on ASTM D 6279, of greater than 60%.
- the cured coating has a gloss retention, based on ASTM D 6279, of greater than 70%.
- the cured coating has a gloss retention, based on SAE J2527, of greater than 85% after 1000 hours.
- the cured coating has a gloss retention, based on SAE J2527, of greater than 85% after 1500 hours.
- the cured coating has a gloss retention, based on SAE J2527, of greater than 85% after 2000 hours.
- the cured coating has a gloss retention, based on SAE J2527, of greater than 85% after 2500 hours.
- the cured coating has a gloss retention, based on SAE J2527, of greater than 85% after 3000 hours.
- the cured coating has a gloss retention, based on SAE J2527, of greater than 85% after 3500 hours.
- the cured coating has a gloss retention, based on SAE J2527, of greater than 85% after 4000 hours.
- the substrate is selected from the group consisting of wood, metal and polymers.
- the substrate is metal
- the metal substrate is at least one surface of an automobile.
- the applying the thermosetting monocoat coating composition to the substrate step comprises brushing, spraying, and roll coating.
- the coating is applied by spraying, wherein said spraying comprises rotational bell spraying.
- the heating step comprises heating said coated substrate to a temperatue of from 35°C to 400°C for a period of from 5 seconds to 5 hours.
- the heating step comprises heating said coated substrate to a temperatue of from 50°C to 200°C for a period of from 5 seconds to 5 hours.
- the heating step comprises heating said coated substrate to a temperatue of from 60°C to 175°C for a period of from 5 seconds to 5 hours. In any of the above embodiments, the heating step comprises heating said coated substrate to a temperature of from 80°C to 175°C for a period of from 5 seconds to 5 hours.
- the period is from 10 minutes to 4 hours. In any of the above embodiments, the period is from 20 minutes to 3 hours. In any of the above embodiments, the period is from 30 minutes to 1 hour.
- the solvent in said thermosetting monocoat coating comprises less than 3 weight % water, based on the weight of the solution.
- the solvent in said thermosetting monocoat coating is selected from the group consisting of benzene, xylene, mineral spirits, naptha, toluene, acetone, methyl ethyl ketone, methyl n-amyl ketone, methyl isoamyl ketone, n-butyl acetate, isobutyl acetate, t-butyl acetate, n-propyl acetate, isopropyl acetate, ethyl acetate, methyl acetate, ethanol, n-propanol, isopropanol, n-butanol, sec-butanol, isobutanol, ethylene glycol monobutyl ether, propylene glycol n-butyl ether, propylene glycol methyl ether, propylene glycol monopropyl ether, dipropylene glycol methyl ether, diethylene glycol monobutyl
- the solvent comprises xylene, methyl amyl ketone, n-butyl acetate, Aromatic 100, and/or Aromatic 150.
- the resin was prepared using a solvent process to help remove the water of esterification.
- the resin was prepared in a two-liter reaction kettle equipped with a heating mantle, mechanical stirrer, thermocouple, nitrogen blanket (1.0 scfh), oil- heated partial condenser (103°C–105°C), condensate trap, and water-cooled total condenser (15°C).
- the condensate trap, kettle top and adapter from the kettle to the column were insulated by aluminum foil and fiberglass tape to facilitate water removal.
- a 0.25 wt. % excess of NPG and TMCD was added to the charge weight to compensate for glycol losses, and triphenylphosphite was added as a color stabilizer.
- Stage 1 - HHPA, TMP, TMCD and excess triphenylphosphite and xylene were charged to the reactor. Additional xylene (approximately 30g) was used to fill the condensate trap. The temperature was then increased from room temperature to 75°C over fifty (50) minutes to form a homogenous melt. Agitation (300 rpm) was started and the temperature increased to a maximum of 165°C over sixty (60) minutes. The reaction was held at 165°C for 30 minutes, and no water was collected.
- Stage 2 - NPG (and excess NPG), TMP, AD and catalyst were added to the reactor and heated to 230°C and held at this temperature until the final acid number, approximately 10 mg KOH/g resin, was achieved.
- the resin was cooled to 200°C and poured through a medium mesh paint filter into a metal paint can.
- the acid number (abbreviated “AN”), hydroxyl number (abbreviated “OHN”), number average molecular weight (abbreviated “Mn”), weight average molecular weight (abbreviated“Mw), z-average molecular weight (abbreviated as“Mz”), molecular weight distribution polydispersity index (abbreviated“Mw/Mn”), and glass transition temperature (abbreviated “Tg”) of the polyesters are shown in Table 2 below. Acid number was determined using ASTM method D 1639.
- Hydroxyl number was determined by esterifying the resin by reaction with excess acetic anhydride in pyridine and then decomposing the unreacted anhydride with water. The resulting acetic acid is then titrated with a standard solution of KOH. The number of milligrams KOH which are equivalent to one gram of resin sample is reported as the hydroxyl number.
- Number average molecular weight was determined by gel permeation chromatography using a refractive index detector with polystyrene standards.
- Residual solvent remaining in the resin from solvent processing could artificially lower the Tg measurement.
- a resin sample was first subjected to preconditioning in an oven. 0.3g-0.5g of the resin was placed into a sample tin and heated to 150°C. The sample remained in the oven for 14-16 hours (overnight). The sample was then transferred to a differential scanning calorimeter (TA Instruments DSC Q2000 V24.9 Build 121). On the first heating cycle, the sample was heated under nitrogen atmosphere from -50°C to 140°C at a rate of 20°C/min. The sample was then quench cooled to -50°C. For the second heating cycle, the sample was heated under the same conditions as those used in the first heating cycle. The midpoint of the second heating cycle is reported as the Tg of the sample.
- the resin was prepared using a solvent process to help remove the water of esterification.
- the resin was prepared in a two-liter reaction kettle equipped with a heating mantle, mechanical stirrer, thermocouple, nitrogen blanket (1.0 scfh), oil- heated partial condenser (103°C–105°C), condensate trap, and water-cooled total condenser (15°C).
- the condensate trap, kettle top and adapter from the kettle to the column were insulated by aluminum foil and fiberglass tape to facilitate water removal.
- a 0.25 wt. % excess of NPG and TMCD was added to the charge weight to compensate for glycol losses, and triphenylphosphite was added as a color stabilizer.
- Stage 1 - HHPA, AD, TMCD (and excess TMCD), triphenylphosphite and xylene were charged to the reactor.
- the temperature was then increased from room temperature to 75°C over fifty (50) minutes to form a homogenous melt. Agitation (300 rpm) was started and the temperature increased to a maximum of 165°C over sixty (60) minutes. The reaction was held at 165°C for 30 minutes. The temperature was increased to 210°C over 45 minutes and held until approximately 8 grams of water was collected.
- Stage 2 The reaction mixture was cooled to 170°C. NPG (and excess NPG), TMP and catalyst were charged to the reactor. The reaction mixture was then heated to 230°C over 120 minutes.
- the resin was prepared using a solvent process to help remove the water of esterification.
- the resin was prepared in a two-liter reaction kettle equipped with a heating mantle, mechanical stirrer, thermocouple, nitrogen blanket (1.0 scfh), oil- heated partial condenser (103°C–105°C), condensate trap, and water-cooled total condenser (15°C).
- the condensate trap, kettle top and adapter from the kettle to the column were insulated by aluminum foil and fiberglass tape to facilitate water removal.
- a 0.25 wt. % excess of NPG and TMCD was added to the charge weight to compensate for glycol losses, and triphenylphosphite was added as a color stabilizer.
- Stage 1 - HHPA, AD, TMCD (and excess TMCD), triphenylphosphite and xylene were charged to the reactor.
- the temperature was then increased from room temperature to 75°C over fifty (50) minutes to form a homogenous melt. Agitation (300 rpm) was started and the temperature increased to a maximum of 170°C over sixty (60) minutes.
- the reaction was held at 170°C for 60 minutes.
- the temperature was increased to 220°C over 50 minutes and held until approximately 37 grams of water was collected.
- the resin was prepared using a solvent process to help remove the water of esterification.
- the resin was prepared in a two-liter reaction kettle equipped with a heating mantle, mechanical stirrer, thermocouple, nitrogen blanket (1.0 scfh), oil- heated partial condenser (103°C–105°C), condensate trap, and water-cooled total condenser (15°C).
- the condensate trap, kettle top and adapter from the kettle to the column were insulated by aluminum foil and fiberglass tape to facilitate water removal.
- a 0.25 wt. % excess of NPG and TMCD was added to the charge weight to compensate for glycol losses, and triphenylphosphite was added as a color stabilizer.
- Stage 1 - HHPA, AD, TMCD (and excess TMCD), triphenylphosphite and xylene were charged to the reactor.
- the temperature was then increased from room temperature to 75°C over fifty (50) minutes to form a homogenous melt. Agitation (300 rpm) was started and the temperature increased to a maximum of 165°C over sixty (60) minutes. The reaction was held at 165°C for 30 minutes. The temperature was increased to 210°C over 45 minutes and held until approximately 24 grams of water was collected.
- Stage 2 The reaction mixture was cooled to 170°C. NPG (and excess NPG), TMP and catalyst were charged to the reactor. The reaction mixture was then heated to 230°C over 120 minutes.
- the resin was prepared using a solvent process to help remove the water of esterification.
- the resin was prepared in a two-liter reaction kettle equipped with a heating mantle, mechanical stirrer, thermocouple, nitrogen blanket (1.0 scfh), oil- heated partial condenser (103°C–105°C), condensate trap, and water-cooled total condenser (15°C).
- the condensate trap, kettle top and adapter from the kettle to the column were insulated by aluminum foil and fiberglass tape to facilitate water removal.
- a 0.25 wt. % excess of NPG and TMCD was added to the charge weight to compensate for glycol losses, and triphenylphosphite was added as a color stabilizer.
- Stage 1 - HHPA, TMP, TMCD (and excess TMCD), triphenylphosphite and xylene were charged to the reactor.
- the temperature was then increased from room temperature to 75°C over fifty (50) minutes to form a homogenous melt. Agitation (300 rpm) was started and the temperature increased to a maximum of 165°C over sixty (60) minutes. The reaction was held at 165°C for 30 minutes, and no water was collected.
- White pigmented thermosetting monocoats were prepared by mixing the ingredients listed in Table 3.
- the polyester samples prepared in table 2 were pre- dissolevd into butylaetate to form 75% solid solutions.
- Mill base portion were added to a stainless steel pot in listed order and pre-dispersed usign a cowles blade at 2000 rpm for 20 mintes. The mixture was then pulled into a Mini Motor Mill 250 from Eiger Machinery Inc. The mill base was ground at 4000 rpm to 7+ on a Hegman gage. Then the mill base was pulled out. The mill was washed with pre-mixed “Wash mill“ portion. The let down portion was pre-mixed in a container and added to a grinding paste and agitated to form uniformed monocoat. The viscosity of the white monocoats was adjusted with aromatic 100 to 30 second measured using a #4 Ford cup.
- a wire wound rod was used to apply the coating to polished cold rolled steel test panels with elecrodeposit coat and topcoated with a gray primer.
- Panels were purchased from ACT Test Panels LLC and the steel thickness is 0.032 inch. The rod was selected to achieve a 40 microns dry film thickness. Coated panels were flashed 10 minutes at room temperature and then cured at 140°C for 30 minutes.
- Hardness was determined using two methods: a BYK-Gardner pendulum hardness tester (ASTM D 4366); and pencil test (ASTM D 3363). For pencil hardness, the value reported was the last pencil that did not cut through the coating to the metal substrate. Flexibility of the monocoats were tested uing both Conical mandrel bending and impact tester. The TQC Bend Tester from Gardner was used for Conical mandrel bending. Test was done as per ASTM D522. Impact resistance was measured with a Gardco Model 172 universal impact tester (ASTM D 2794). The indenter punch used was IM-172-2 with additional auxilary 2 pound weight, the diameter being 0.64 of an inch (1.63 centimeters). The values reported are the last impact that did not produce any cracks in the coating film or delamination of the coating from the substrate. Abrasion resistance was tested using an AATCC
Abstract
Disclosed are aliphatic polyester resins containing specific molar quantities of 2,2,4,4-tetramethyl-1,3-cyclobutanediol, and solvent borne, thermosetting monocoating compositions prepared therefrom. The aliphatic polyesters exhibit good hardness and flexibility when formulated into thermosetting coatings compositions.
Description
ALIPHATIC POLYESTER COATING COMPOSITIONS CONTAINING TETRAMETHYL CYCLOBUTANEDIOL FIELD OF THE INVENTION
This invention pertains to aliphatic, curable polyesters for solvent-borne, thermosetting, single coating compositions. Particularly, this invention pertains to curable polyesters containing 2,2,4,4-tetraalkylcyclobutane-1,3-diol (TACD) and high-solids, solvent-borne thermosetting mono-coating compositions prepared from these polyesters. These polyesters can be used in blends with acrylic resins or serve as the primary film former in a coating formulation. BACKGROUND OF THE INVENTION
Solvent-borne, polyester thermosetting coatings that exhibit high hardness are commercially desirable. Coatings with high hardness typically exhibit high gloss, good distinctness of image (DOI), fast dry-times, scratch, stain, chemical, and humidity resistance, and outdoor durability.
Aliphatic polyesters are frequently used to reduce viscosity and increase solids for thermosetting acrylic (abbreviated herein as "TSA") coatings. Aliphatic polyesters also are useful as a primary film former in high solids coatings because of their ability to reduce volatile organic compound ("VOC") emissions. Coatings made from aliphatic polyesters are generally flexible but tend to be soft, which results in poor resistance to solvents and chemicals, poor humidity resistance and poor outdoor durability.
Hardness and hardness-related properties of aliphatic polyester resins sometimes can be improved with the addition of 1,4-cyclohexanedimethanol
(abbreviated herein as "CHDM") and hydrogenated bisphenol A (abbreviated herein as "HBPA”). Unfortunately, poor solvent solubility and compatibility with acrylic resins often are observed as CHDM content is increased in the polyester resin formulation. The amount of CHDM that can be incorporated into the resin formulation, therefore is limited. HBPA is know to exhibit similar characteristics.
Poor resin solubility often manifests itself over time by phase separation, precipitation of the resin from solution, and the development of hazy to opaque resin
solutions. These characteristics are undesirable and limit the storage stability of the resin solution and the coatings formulated from these solutions. Such coatings, for example, may experience a viscosity increase, phase separation, agglomeration of ingredients, etc., that result in an undesirable higher application viscosity, poor appearance and poor mechanical properties of the cured film.
Thermosetting acrylic ("TSA") resins are widely used in industrial coatings. They can be formulated to a high glass transition temperature (Tg) and exhibit excellent light stability and hydrolysis resistance. These properties result in coatings with the desirable characteristics of high hardness; fast dry times; resistance to stains, chemicals and humidity; and good outdoor durability. Consequently, TSA resins often serve as the primary film-former in coatings for demanding applications that include transportation, maintenance, marine and building/construction markets.
Although TSA resins exhibit many desirable properties, they often lack flexibility and require more solvent in the coating formulation to achieve a practical application viscosity. The higher solvent requirement for TSA resins makes it difficult to achieve high solids coatings with reduced VOC content as mandated by various federal and state air quality organizations.
To increase resin and coating solids, reduce viscosity, and lower VOC emission, aliphatic polyester resins can be blended with TSA resins. Unfortunately, the glass transition temperature ("Tg") of the blend frequently decreases significantly as the polyester content increases. The lower Tg of the blend has an adverse impact on the desirable characteristics that the TSA resin imparts to the coating.
Automotive coatings have gradually shifted from one layer monocoat system after primer to two layer system--basecoat and clearcoat—for an improved appearance and improved durability. However, environmental compliance has resulted in the paint industry attempting to move towards greener and more“eco- friendly” products with similar performance attributes. Increases in the total solids content or replacement of certain organic solvents with water are two alternatives available to limit the amount of volatile organic compounds (VOC) in the paint formulation. Consolidated paint processes which eliminates or shorten bake and flash time in attempt to reduce energy consumption and operating cost. Accordingly, monocoat systems have found renewed interest by industry. A monocoat paint system
reduces painting time and energy use by cutting the number of paint applications from three to two and the number of drying procedures from two to one. The reduction in paint and energy consumed means reduced carbon dioxide and particulate emissions compared with conventional paint processes.
There is a need in the coatings industry for aliphatic polyesters that exhibit good hardness with good flexibility and solubility when formulated into thermosetting coatings compositions. In addition, there is a need for aliphatic polyester resins that, when blended with TSA resins, lower the viscosity while maintaining the Tg of the TSA resin in high solids, thermosetting coating compositions. SUMMARY OF THE INVENTION
The present invention provides curable, aliphatic polyesters prepared from 2,2,4,4-tetraalkylcyclobutane-1,3-diol. One aspect of the invention is a curable, aliphatic polyester, comprising residues of:
i. hydroxyl component comprising the residues of:
a. from 5 to 45 mole %, based on the total moles of (a) and (b), of 2,2,4,4- tetraalkylcyclobutane-1,3-diol (TACD);
b. from 55 to 95 mole % based on the total moles of (a) and (b), of a diol other than TACD; and
c. from 3 to 35 mole %, based on the total moles of (a), (b) and (c), of a polyol;
ii. a diacid component comprising the residues of:
d. from 60 to 90 mole %, based on the total moles of the diacids of an alicyclic diacid; and
e. from 10 to 40 mole %, based on the total moles of the diacids
an acyclic aliphatic diacid;
wherein the curable polyester contains diacid residues in an amount of at least 90 mole % of aliphatic diacid residues, based on the total moles of all diacid residues in the curable polyester, and, wherein the curable polyester has a hydroxyl number of 50 to 450 mgKOH/g of polyester, an acid number of 0 to 80 mgKOH/g, and a number average molecular weight of 300 to 10,000 g/mole of polyester.
In another aspect, a thermosetting coating solution comprising:
A. 50 to 90 weight percent, based on the total weight of (A) and (B) of at least one curable, aliphatic polyester, comprising residues of: i. hydroxyl component comprising the residues of:
a. from 5 to 45 mole %, based on the total moles of (a) and (b), of 2,2,4,4-tetraalkylcyclobutane-1,3-diol (TACD);
b. from 55 to 95 mole % based on the total moles of (a) and (b), of a diol other than TACD; and
c. from 3 to 35 mole %, based on the total moles of (a), (b) and (c), of a polyol;
ii. a diacid component comprising the residues of:
d. from 60 to 90 mole %, based on the total moles of the diacids (d) and (e), of an alicyclic diacid; and
e. from 10 to 40 mole %, based on the total moles of the diacids (d) and (e), of an acyclic aliphatic diacid;
wherein the curable polyester contains diacid residues in an amount of at least 90 mole % of aliphatic diacid residues, based on the total moles of all diacid residues in the curable polyester, and, wherein the curable polyester has a hydroxyl number of 50 to 450 mgKOH/g of polyester, an acid number of 0 to 80 mgKOH/g, and a number average molecular weight of 300 to 10,000 g/mole of polyester; and
B. from 10 to 50 weight percent, based on the total weight of the solution, of a solvent other than water.
In another aspect of the present invention, coatings can be formulated from these curable aliphatic polyester resins which exhibit high gloss, distinctness of image and reflectivity; good hardness with good flexibility; solvent and chemical resistance; and good gloss retention during UV and humidity exposure for good outdoor durability. Thus, another embodiment of our invention is a thermosetting monocoat coating composition, comprising:
A. 50 to 90 weight percent, based on the total weight of (A) and (C), of at least one curable, aliphatic polyester, comprising residues of: i. hydroxyl component comprising the residues of:
a. from 5 to 45 mole %, based on the total moles of (a) and (b), of 2,2,4,4-tetraalkylcyclobutane-1,3-diol (TACD);
b. from 55 to 95 mole % based on the total moles of (a) and (b), of a diol other than TACD; and
c. from 3 to 35 mole %, based on the total moles of (a), (b) and (c), of a polyol;
ii. a diacid component comprising the residues of:
d. from 60 to 90 mole %, based on the total moles of the diacids (d) and (e), of an alicyclic diacid; and
e. from 10 to 40 mole %, based on the total moles of the diacids (d) and (e), of an acyclic aliphatic diacid;
wherein the curable polyester contains diacid residues in an amount of at least 90 mole % of aliphatic diacid residues, based on the total moles of all diacid residues in the curable polyester, and, wherein the curable polyester has a hydroxyl number of 50 to 450 mgKOH/g of polyester, an acid number of 0 to 80 mgKOH/g, and a number average molecular weight of 300 to 10,000 g/mole of polyester; and
B. from 10 to 50 weight percent, based on the total weight of the coating composition, of a solvent other than water; and
C. from 10 to 50 weight percent, based on the total weight of (A) and (C), of a crosslinker comprising an aminoplast and/or isocyanate.
The aliphatic polyesters may be blended with acrylics or serve as the primary film former to formulate factory and field-applied coatings used in auto OEM, auto refinish, transportation, aerospace, maintenance, marine, machinery and equipment, general metal, appliance, metal furniture, plastic and building / construction applciations. When blended with thermosetting acrylic (TSA) resins, our aliphatic polyesters exhibit good solubility, compatibility and viscosity reduction with good Tg retention of the blend.
Another aspect of the invention is a method for applying a thermosetting monocoat coating composition to a substrate comprising:
I. providing a suitable substrate for coating;
II. providing a thermosetting monocoat coating composition comprising:
A. 50 to 90 weight percent, based on the total weight of (A) and (C), of at least one curable, aliphatic polyester, comprising residues of:
i. hydroxyl component comprising the residues of:
a. from 5 to 45 mole %, based on the total moles of (a) and (b), of 2,2,4,4-tetraalkylcyclobutane-1,3-diol (TACD); b. from 55 to 95 mole % based on the total moles of (a) and (b), of a diol other than TACD; and
c. from 3 to 35 mole %, based on the total moles of (a), (b) and (c), of a polyol;
ii. a diacid comprising the residues of:
d. from 60 to 90 mole %, based on the total moles of the diacids (d) and (e), of an alicyclic diacid; and e. from 10 to 40 mole %, based on the total moles of the diacids (d) and (e), of an acyclic aliphatic diacid;
wherein the curable polyester contains diacid residues in an amount of at least 90 mole % of aliphatic diacid residues, based on the total moles of all diacid residues in the curable polyester, and, wherein the curable polyester has a hydroxyl number of 50 to 450 mgKOH/g of polyester, an acid number of 0 to 80 mgKOH/g, and a number average molecular weight of 300 to 10,000 g/mole of polyester; and
B. from 10 to 50 weight percent, based on the total weight of the coating composition, of a solvent other than water; and
C. from 10 to 50 weight percent, based on the total weight of (A) and (C), of a crosslinker comprising an aminoplast and/or isocyanate;
III. applying the thermosetting monocoat coating composition to the substrate to produce a coated substrate; and IV. applying heat to the coated substrate to a predetermined temperature and for a predetermined time to produce a cured coating. DETAILED DESCRIPTION
Surprisingly, it has been discovered that curable, aliphatic polyesters that
contain 2,2,4,4-tetraalkylcyclobutane-1,3-diol (TACD), and more particularly, 2,2,4,4- tetramethyl-1,3-cyclobutanediol (abbreviated herein as "TMCD") can be used to prepare solvent-borne, high-solids, thermosetting coatings that exhibit high gloss, good hardness and flexibility; and solvent and chemical resistance. These aliphatic polyesters also can be blended with thermosetting acrylic resins ("TSA") to produce blends that have low viscosity, good compatibility, flexibility, and Tg retention. Curable, Aliphatic Polyester
In accordance with one aspect of the present invention is a curable, aliphatic polyester, comprising:
i. a hydroxyl component comprising the residues of:
a. from 5 to 45 mole %, based on the total moles of (a) and (b), of 2,2,4,4-tetraalkylcyclobutane-1,3-diol (TACD);
b. from 55 to 95 mole % based on the total moles of (a) and (b), of a diol other than TACD; and
c. from 3 to 35 mole %, based on the total moles of (a), (b) and (c), of a polyol;
ii. a diacid component comprising the residues of:
d. from 60 to 90 mole %, based on the total moles of the diacids of an alicyclic diacid; and
e. from 10 to 40 mole %, based on the total moles of the diacids an acyclic aliphatic diacid;
wherein the curable polyester contains diacid residues in an amount of at least 90 mole % of aliphatic diacid residues, based on the total moles of all diacid residues in the curable polyester, and, wherein the curable polyester has a hydroxyl number of 50 to 450 mgKOH/g of polyester, an acid number of 0 to 80 mgKOH/g, and a number average molecular weight of 300 to 10,000 g/mole of polyester.
Unless otherwise indicated, all numbers expressing quantities of ingredients, properties such as molecular weight, reaction conditions, and so forth used in the specification and claims are to be understood as being modified in all instances by the term "." Unless indicated to the contrary, the numerical parameters set forth in the
following specification and attached claims are approximations that may vary depending upon the desired properties sought to be obtained by the present invention. At the very least, each numerical parameter should be construed in light of the number of reported significant digits and by applying ordinary rounding techniques. Further, the ranges stated in this disclosure and the claims are intended to include the entire range specifically and not just the endpoint(s). For example, a range stated to be 0 to 10 is intended to disclose all whole numbers between 0 and 10 such as, for example 1, 2, 3, 4, etc., all fractional numbers between 0 and 10, for example 1.5, 2.3, 4.57, 6.1113, etc., and the endpoints 0 and 10. Also, a range associated with chemical substituent groups such as, for example,“C1 to C5 diols”, is intended to specifically include and disclose C1, C2, C3, C4 and C5 diols.
Notwithstanding that the numerical ranges and parameters setting forth the broad scope of the invention are approximations, the numerical values set forth in the specific examples are reported as precisely as possible. Any numerical value, however, inherently contains certain errors necessarily resulting from the standard deviation found in its respective testing measurements.
As used in the specification and the appended claims, the singular forms "a," "an" and "the" include their plural referents unless the context clearly dictates otherwise. For example, a reference to a“polyester,” a "dicarboxylic acid”, a
"residue” is synonymous with“at least one” or“one or more” polyesters, dicarboxylic acids, or residues and is thus intended to refer to both a single or plurality of polyesters, dicarboxylic acids, or residues. In addition, references to a composition “comprising”,“containing”,“having” or“including” "an" ingredient or "a" polyester is intended to include other ingredients or other polyesters, respectively, in addition to the specifically identifed ingredient or residue. Accordingly, the terms "containing", “having” or“including” are intended to be synonymous and may be used
interchangably with the term "comprising", meaning that at least the named compound, element, particle, or method step, etc., is present in the composition or article or method, but does not exclude the presence of other compounds, catalysts, materials, particles, method steps, etc, even if the other such compounds, material, particles, method steps, etc., have the same function as what is named, unless expressly excluded in the claims.
Also, it is to be understood that the mention of one or more process steps does not preclude the presence of additional process steps before or after the combined recited steps or intervening process steps between those steps expressly identified. Moreover, the lettering of process steps or ingredients is a convenient means for identifying discrete activities or ingredients and the recited lettering can be arranged in any sequence, unless otherwise indicated.
The term“curable, aliphatic polyester”, as used herein, is synonymous with the term“resin” and is intended to mean a thermosetting surface coating polymer prepared by the polycondensation of one or more acid components and hydroxyl components. The curable, aliphatic polyester of the present invention is a thermoset polymer and is suitable as a resin for solvent-based coatings and more specifically mono-coat applications. This polyester has a low molecular weight, typically 500 to 10,000 daltons, and would not be suitable for fabrication films, sheets, and other shaped objects by extrusion, casting, blow molding, and other thermoforming processes commonly used for high molecular weight thermoplastic polymers. The polyester has a reactive functional group, typically a hydroxyl group or carboxyl group for the purpose of later reacting with a crosslinker in a coating formulation. The functional group is controlled by having either excess diol or acid (from dicarboxylic acid or tricarboxylic acid) in the polyester resin composition. The desired crosslinking pathway will determine whether the polyester resin will be hydroxyl-terminated or carboxylic acid-terminated. This concept is known to those skilled in the art and described, for example, in Organic Coatings Science and Technology, 2nd ed., p. 246-257, by Z. Wicks, F. Jones, and S. Pappas, Wiley, New York, 1999, the entire disclosure of which is incorporated herein by reference.
Typically, the acid component comprises at least one dicarboxylic acid and may, optionally, include mono- and polybasic carboxylic acids. For example, the curable, aliphatic polyester may be prepared from an acid component comprising an aliphatic or cycloaliphatic dicarboxylic acid such as, for example, adipic acid or 1,3- cyclohexanedicarboxylic acid, or a mixture of one or more aliphatic and
cycloaliphatic acids. The hydroxyl component comprises diols and polyols. The diols may comprise one or more cycloaliphatic diols such as, for example, 2,2,4,4- tetramethyl-1,3-cyclobutanediol, either alone or in combination with one or more
linear or branched aliphatic diols such as, for example, neopentyl glycol. Catalysts may be used to accelerate the rate of the polycondensation reaction. Additional examples of acid components and hydroxyl components, other than TMCD of the curable, aliphatic polyester include those known in the art including, but not limited to, those discussed below, and in various documents known in the art such as, for example, in Resins for Surface Coatings, Vol.III, p. 63-167, ed. by P.K.T. Oldring and G. Hayward, SITA Technology, London, UK, 1987, the disclosure of which is incorporated herein by reference.
The term“residue”, as used herein in reference to the polymers of the invention, means any organic structure incorporated into a polymer through a polycondensation or ring opening reaction involving the corresponding monomer. It will also be understood by persons having ordinary skill in the art, that the residues associated within the various curable polyesters of the invention can be derived from the parent monomer compound itself or any derivative of the parent compound. For example, the dicarboxylic acid residues referred to in the polymers of the invention may be derived from a dicarboxylic acid or its associated acid halides, esters, salts, anhydrides, or mixtures thereof. Thus, as used herein, the term“dicarboxylic acid” is intended to include dicarboxylic acids and any derivative of a dicarboxylic acid, including its associated acid halides, esters, half-esters, salts, half-salts, anhydrides, and mixtures thereof, useful in a polycondensation process with a diol to make a curable, aliphatic polyester.
The term "aliphatic" is intended to have its common meaning as would be understood by persons having ordinary skill in the art, that is, acyclic or cyclic, saturated or unsaturated carbon compounds, excluding benzenoid or other aromatic systems. The term "cycloaliphatic", as used herein, is intended to mean an aliphatic, cyclic compound. The term "aliphatic polyester", as used herein, is understood to mean a polyester that contains 90 mole percent or greater aliphatic diacid or diol residues, based on the total moles of diacid or diol residues. Small amounts , such as less than 10 mole %, or less than 9 mole %, or less than 8 mole %, or less than 5 mole %, or less than 3 mole %, or less than 2 mole %, or less than 1 mole % of aromatic dicarboxylic acids residues or aromatic diol residues also may be present in the curable, aliphatic polyester. Desirably, the curable, aliphatic polyester is essentially
free, i.e., having less than 1 mole % of aromatic diacid and/or aromatic diol residues. The curable, aliphatic polyester also comprises (a) from 5 mole % to 45 mole %, based on the total moles of (a) and (b) discussed herein, of the residues of 2,2,4,4- tetraalkylcyclobutane-1,3-diol (TACD). Alternatively, the curable, aliphatic polyester can comprise from 5 mole % to 40 mole %, based on the total moles of (a) and (b); or from 10 mole % to 40 mole %, based on the total moles of (a) and (b); or from 15 mole % to 40 mole %, based on the total moles of (a) and (b); or from 17 mole % to 30 mole %, based on the total moles of (a) and (b); or from 20 mole % to 30 mole %, based on the total moles of (a) and (b); or from 25 mole % to 30 mole %, based on the total moles of (a) and (b) of TACD residues.
The TACD compounds can be represented by the general structure below:
wherein R1, R2, R3, and R4 each independently represent an alkyl radical, for example, a lower alkyl radical having 1 to 8 carbon atoms; or 1 to 6 carbon atoms, or 1 to 5 carbon atoms, or 1 to 4 carbon atoms, or 1 to 3 carbon atoms, or 1 to 2 carbon atoms, or 1 carbon atom. The alkyl radicals may be linear, branched, or a
combination of linear and branched alkyl radical. Desirably, the polyhydroxyl compounds are hydrocarbons and do not contain atoms other than hydrogen, carbon and oxygen. Examples of suitable diols“(a)” include 2,2,4,4-tetramethylcyclobutane- 1,3-diol, 2,2,4,4-tetraethylcyclobutane-1,3-diol, 2,2,4,4-tetra-n-propylcyclobutane- 1,3-diol, 2,2,4,4-tetra-n-butylcyclobutane-1,3-diol, 2,2,4,4-tetra-n-pentylcyclobutane- 1,3-diol, 2,2,4,4-tetra-n-hexylcyclobutane-1,3-diol, 2,2,4,4-tetra-n-heptylcyclobutane- 1,3-diol, 2,2,4,4-tetra-n-octylcyclobutane-1,3-diol, 2,2-dimethyl-4,4- diethylcyclobutane-1,3-diol, 2-ethyl-2,4,4-trimethylcyclobutane-1,3-diol, 2,4-
dimethyl-2,4-diethyl-cyclobutane-1,3-diol, 2,4-dimethyl-2,4-di-n-propylcyclobutane- 1,3-diol, 2,4-n-dibutyl-2,4-diethylcyclobutane-1,3-diol, 2,4-dimethyl-2,4- diisobutylcyclobutane-1,3-diol, and 2,4-diethyl-2,4-diisoamylcyclobutane-1,3-diol. Dessirably, the diol is selected from 2,2,4,4-tetraalkylcyclobutane-1,3-diol, 2,2- dimethyl-1,3-propanediol (neopentyl glycol), 1,2 cyclohexanedimethanol, 1,3- cyclohexanedimethanol, 1,4 cyclohexanedimethanol, 2,2,4-trimethyl-1,3-pentanediol, hydroxypivalyl hydroxypivalate, 2-methyl-1,3-propanediol, 2-butyl-2-ethyl-1,3- propanediol, 2-ethyl-2-isobutyl-1,3-propanediol, 1,3-butanediol, 1,4-butanediol, 1,5- pentanediol, 1,6-hexanediol, 2,2,4,4-tetramethyl-1,6-hexanediol, 1,10-decanediol, 1,4- benzenedimethanol, ethylene glycol, propylene glycol, diethylene glycol, dipropylene glycol, triethylene glycol, tetraethylene glycol, and polyethylene glycol, and polyols such as 1,1,1-trimethylol propane, 1,1,1-trimethylolethane, glycerin, pentaerythritol, erythritol, threitol, dipentaerythritol, sorbitol, and combinations thereof. More desirably, the diol“(a)” is 2,2,4,4-tetramethyl-1,3-cyclobutanediol (TMCD), 2,2- dimethyl-1,3-propanediol (neopentyl glycol), 1,2-cyclohexanedimethanol, 1,3- cyclohexanedimethanol, 1,4- cyclohexanedimethanol, 2,2,4-trimethyl-1,3- pentanediol, hydroxypivalyl hydroxypivalate, 2-methyl-1,3-propanediol, 2-butyl-2- ethyl-1,3-propanediol, 1,4-butanediol, 1,6-hexanediol and mixtures thereof.
The diols (b) have 2 hydroxyl groups and can be branched or linear, saturated or unsaturated, aliphatic or cycloaliphatic C2-C20 compounds, the hydroxyl groups being primary, secondary, and/or tertiary, desirably primary. Examples of diols (b) include 2,2-dimethyl-1,3-propanediol (neopentyl glycol), 1,2 cyclohexane-dimethanol, 1,3- cyclohexanedimethanol, 1,4 cyclohexanedimethanol, 2,2,4-trimethyl-1,3-pentanediol, hydroxypivalyl hydroxypivalate, 2-methyl-1,3-propanediol, 2-butyl-2-ethyl-1,3- propanediol, 2-ethyl-2-isobutyl-1,3-propanediol, 1,3-butanediol, 1,4-butanediol, 1,5- pentanediol, 1,6-hexanediol, 2,2,4,4-tetramethyl-1,6-hexanediol, 1,10-decanediol, 1,4- benzenedimethanol, ethylene glycol, propylene glycol, diethylene glycol, dipropylene glycol, triethylene glycol, tetraethylene glycol, polyethylene glycol, 2,2- bis(hydroxymethyl)propionic acid (dimethylolpropionic acid) and mixtures thereof.
Althernatively, the diol (b) is selected from 2,2-dimethyl-1,3-propanediol (neopentyl glycol), 1,2-cyclohexanedimethanol, 1,3-cyclohexanedimethanol, 1,4- cyclohexanedimethanol, 2,2,4-trimethyl-1,3-pentanediol, hydroxypivalyl
hydroxypivalate, 2-methyl-1,3-propanediol, 2-butyl-2-ethyl-1,3-propanediol, 1,4- butanediol, 1,6-hexanediol and mixtures thereof. Based on the total moles of the diol (b) in the curable aliphatic polyester, at least 15 mole % of (b) comprises neopentyl glycol, or at least 20 mole % neopentyl glycol, or at least 22 mole % neopentyl glycol, or at least 25 mole % neopentyl glycol, or at least 35 mole % neopentyl glycol, or at least 40 mole % neopentyl glycol, or at least 45 mole % neopentyl glycol, or at least 50 mole % neopentyl glycol, or at least 55 mole % neopentyl glycol, or at least 60 mole % neopentyl glycol, or at least 65 mole % neopentyl glycol, or at least 70 mole % neopentyl glycol, or at least 75 mole % neopentyl glycol, or at least 80 mole % neopentyl glycol, or at least 85 mole % neopentyl glycol, or at least 90 mole % neopentyl glycol, or the diol (b) is neopentyl glycol.
In accordance with the present invention, the curable, aliphatic polyester can include residues of TACD (a) from 30 to 40 mole % and the diol (b) from 60 to 70 mole %, based on the total mole of (a) and (b). Desirably, the molar ratio of (b) to (a) is from 1:1-2.5:1, or 1.3:1 to 2.5:1, or 1.5:1 to 2.0:1, or from 1.1:1 to 1.8:1. An important aspect of the present invention is that the molar quantity of residues of (a) is always less than the molar quantity of residues of (b) in the curable, aliphatic polyester. Although not to be bound by any theory, it is believed that the amount of diol (b) to TACD (a) is important in that when the mole % of (a) exceeds the mole % of (b) the monocoat coating described hereinbelow becomes brittle and if the amount of (b) is excessive, i.e., outside of the above molar ratiors, then the monocoat coating described hereinbelow becomes too soft have reduced weatherability and mechanical properties.
The curable, aliphatic polyester further includes residues of from 3 to 35 mole %, based on the total moles of (a), (b) and (c), of a polyol (c) having 3 or more hydroxyl groups and can be branched or linear, saturated or unsaturated, aliphatic or cycloaliphatic C2-C20 compounds, the hydroxyl groups being primary, secondary, and/or tertiary. It is contemplated that at least two of the hydroxyl groups be primary. Morevoer, the polyols are hydrocarbons and do not contain atoms other than hydrogen, carbon and oxygen. Non-limiting examples of suitable polyols include 1,1,1-trimethylolpropane (TMP), 1,1,1-trimethylolethane, glycerin, pentaerythritol, erythritol, threitol, dipentaerythritol, sorbitol, and mixtures thereof. Desirably, the
residues from the polyol in the curable, aliphatic polyester is from 5 mole % to 35 mole %, or from 6 mole % to 35 mole %, or from 7 mole % to 35 mole %, or from 8 mole % to 35 mole %, or from 9 mole % to 35 mole %, or from 10 mole % to 35 mole %, or from 11 mole % to 35 mole %, or from 12 mole % to 35 mole %, or from 13 mole % to 35 mole %, or from 14 mole % to 35 mole %, or from 15 mole % to 35 mole %, or from 16 mole % to 35 mole %, or from 17 mole % to 35 mole %, or from 18 mole % to 35 mole %, or from 19 mole % to 35 mole %, or from 20 mole % to 35 mole %, or from 21 mole % to 35 mole %, or from 22 mole % to 35 mole %, or from 23 mole % to 35 mole %, or from 24 mole % to 35 mole %, or from 25 mole % to 35 mole %, or from 26 mole % to 35 mole %, or from 27 mole % to 35 mole %, or from 28 mole % to 35 mole %, or from 29 mole % to 35 mole %, or from 30 mole % to 35 mole %, or from 31 mole % to 35 mole %, or from 32 mole % to 35 mole %, or from 33 mole % to 35 mole %, or from 34 mole % to 35 mole %, or from 5 mole % to 34 mole %, or from 6 mole % to 34 mole %, or from 7 mole % to 34 mole %, or from 8 mole % to 34 mole %, or from 9 mole % to 34 mole %, or from 10 mole % to 34 mole %, or from 11 mole % to 34 mole %, or from 12 mole % to 34 mole %, or from 13 mole % to 34 mole %, or from 14 mole % to 34 mole %, or from 15 mole % to 34 mole %, or from 16 mole % to 34 mole %, or from 17 mole % to 34 mole %, or from 18 mole % to 34 mole %, or from 19 mole % to 34 mole %, or from 20 mole % to 34 mole %, or from 21 mole % to 34 mole %, or from 22 mole % to 34 mole %, or from 23 mole % to 34 mole %, or from 24 mole % to 34 mole %, or from 25 mole % to 34 mole %, or from 26 mole % to 34 mole %, or from 27 mole % to 34 mole %, or from 28 mole % to 34 mole %, or from 29 mole % to 34 mole %, or from 30 mole % to 34 mole %, or from 31 mole % to 34 mole %, or from 32 mole % to 34 mole %, or from 33 mole % to 34 mole %, or from 5 mole % to 33 mole %, or from 6 mole % to 33 mole %, or from 7 mole % to 33 mole %, or from 8 mole % to 33 mole %, or from 9 mole % to 33 mole %, or from 10 mole % to 33 mole %, or from 11 mole % to 35 mole %, or from 12 mole % to 33 mole %, or from 13 mole % to 33 mole %, or from 14 mole % to 33 mole %, or from 15 mole % to 33 mole %, or from 16 mole % to 33 mole %, or from 17 mole % to 33 mole %, or from 18 mole % to 33 mole %, or from 19 mole % to 33 mole %, or from 20 mole % to 33 mole %, or from 21 mole % to 33 mole %, or from 22 mole % to 33 mole %, or from 23 mole % to 33 mole %, or from
24 mole % to 33 mole %, or from 25 mole % to 33 mole %, or from 26 mole % to 33 mole %, or from 27 mole % to 33 mole %, or from 28 mole % to 33 mole %, or from 29 mole % to 33 mole %, or from 30 mole % to 33 mole %, or from 31 mole % to 33 mole %, or from 32 mole % to 33 mole %, or from 5 mole % to 32 mole %, or from 6 mole % to 32 mole %, or from 7 mole % to 32 mole %, or from 8 mole % to 32 mole %, or from 9 mole % to 32 mole %, or from 10 mole % to 32 mole %, or from 11 mole % to 32 mole %, or from 12 mole % to 32 mole %, or from 13 mole % to 32 mole %, or from 14 mole % to 32 mole %, or from 15 mole % to 32 mole %, or from 16 mole % to 32 mole %, or from 17 mole % to 32 mole %, or from 18 mole % to 32 mole %, or from 19 mole % to 32 mole %, or from 20 mole % to 32 mole %, or from 21 mole % to 32 mole %, or from 22 mole % to 32 mole %, or from 23 mole % to 32 mole %, or from 24 mole % to 32 mole %, or from 25 mole % to 32 mole %, or from 26 mole % to 32 mole %, or from 27 mole % to 32 mole %, or from 28 mole % to 32 mole %, or from 29 mole % to 32 mole %, or from 30 mole % to 32 mole %, or from 31 mole % to 32 mole %, or from 5 mole % to 31 mole %, or from 6 mole % to 31 mole %, or from 7 mole % to 31 mole %, or from 8 mole % to 31 mole %, or from 9 mole % to 31 mole %, or from 10 mole % to 31 mole %, or from 11 mole % to 31 mole %, or from 12 mole % to 31 mole %, or from 13 mole % to 31 mole %, or from 14 mole % to 31 mole %, or from 15 mole % to 31 mole %, or from 16 mole % to 31 mole %, or from 17 mole % to 31 mole %, or from 18 mole % to 31 mole %, or from 19 mole % to 31 mole %, or from 20 mole % to 31 mole %, or from 21 mole % to 31 mole %, or from 22 mole % to 31 mole %, or from 23 mole % to 31 mole %, or from 24 mole % to 31 mole %, or from 25 mole % to 31 mole %, or from 26 mole % to 31 mole %, or from 27 mole % to 31 mole %, or from 28 mole % to 31 mole %, or from 29 mole % to 31 mole %, or from 30 mole % to 31 mole %, or from 5 mole % to 30 mole %, or from 6 mole % to 30 mole %, or from 7 mole % to 30 mole %, or from 8 mole % to 30 mole %, or from 9 mole % to 30 mole %, or from 10 mole % to 30 mole %, or from 11 mole % to 30 mole %, or from 12 mole % to 30 mole %, or from 13 mole % to 30 mole %, or from 14 mole % to 30 mole %, or from 15 mole % to 30 mole %, or from 16 mole % to 30 mole %, or from 17 mole % to 30 mole %, or from 18 mole % to 30 mole %, or from 19 mole % to 30 mole %, or from 20 mole % to 30 mole %, or from 21 mole % to 30 mole %, or from 22 mole % to 30 mole %, or from
23 mole % to 30 mole %, or from 24 mole % to 30 mole %, or from 25 mole % to 30 mole %, or from 26 mole % to 30 mole %, or from 27 mole % to 30 mole %, or from 28 mole % to 30 mole %, or from 29 mole % to 30 mole %, or from 5 mole % to 29 mole %, or from 6 mole % to 29 mole %, or from 7 mole % to 29 mole %, or from 8 mole % to 29 mole %, or from 9 mole % to 29 mole %, or from 10 mole % to 29 mole %, or from 11 mole % to 29 mole %, or from 12 mole % to 29 mole %, or from 13 mole % to 29 mole %, or from 14 mole % to 29 mole %, or from 15 mole % to 29 mole %, or from 16 mole % to 29 mole %, or from 17 mole % to 29 mole %, or from 18 mole % to 29 mole %, or from 19 mole % to 29 mole %, or from 20 mole % to 29 mole %, or from 21 mole % to 29 mole %, or from 22 mole % to 29 mole %, or from 23 mole % to 29 mole %, or from 24 mole % to 29 mole %, or from 25 mole % to 29 mole %, or from 26 mole % to 29 mole %, or from 27 mole % to 29 mole %, or from 28 mole % to 29 mole %, or from 5 mole % to 28 mole %, or from 6 mole % to 28 mole %, or from 7 mole % to 28 mole %, or from 8 mole % to 28 mole %, or from 9 mole % to 28 mole %, or from 10 mole % to 28 mole %, or from 11 mole % to 28 mole %, or from 12 mole % to 28 mole %, or from 13 mole % to 28 mole %, or from 14 mole % to 28 mole %, or from 15 mole % to 28 mole %, or from 16 mole % to 28 mole %, or from 17 mole % to 28 mole %, or from 18 mole % to 28 mole %, or from 19 mole % to 28 mole %, or from 20 mole % to 28 mole %, or from 21 mole % to 28 mole %, or from 22 mole % to 28 mole %, or from 23 mole % to 28 mole %, or from 24 mole % to 28 mole %, or from 25 mole % to 28 mole %, or from 26 mole % to 28 mole %, or from 27 mole % to 28 mole %, wherein the above mole percentages of the polyol are based on the total moles of (a), (b) and (c), and further with the
understanding that the remainder mole %, if any, of the polyol (c) is at least one other polyol other than TMP. Desirably, the polyol comprises residues of from 25% to 100% 1,1,1-trimethylolpropane, or from 30% to 100%, or from 35% to 100%, or from 40% to 100%, or from 45% to 100%, or from 50% to 100%, or from 55% to 100%, or from 60% to 100%, or from 65% to 100%, or from 70% to 100%, or from 75% to 100%, or from 80% to 100%, or from 85% to 100%, or from 90% to 100%. Although not to be bound by any theory, it is believed that the amount of polyol residues relative to the amount of residues from (a) and (b) in the curable aliphatic polyester is important in that when the mole % of (c) exceeds the mole % of (a) the monocoat
coating described hereinbelow becomes brittle and if the amount of (c) is too little, then the monocoat coating described hereinbelow does not exhibit sufficient cross- linking resulting in excessive cure times, excessive cure temperatures and reduced chemical resistance.
The residues of the alicyclic diacid compound (d) are obtained from a cyclic aliphatic dicarboxylic acid compound, its diester derivative, its anhydride, or a combination thereof. Suitable alicyclic diacid compounds include compounds having two carboxylic acid groups, their diester derivatives, and their anhydrides. The dicarboxylic acid compounds are capable of forming ester linkages with diol or polyol compounds. For example, a polyester can be synthesized by using a polyhydroxyl compound and a derivative of a dicarboxylic acid such as, for example, dimethyl ester or other dialkyl esters of the diacid, or diacid chloride or other diacid halides, or acid anhydride. Suitable alicyclic diacids include, but are not limited to,
hexahydrophthalic anhydride (HHPA), tetrahydrophthalic anhydride,
tetrachlorophthalic anhydride, 5-norbornene-2,3-dicarboxylic anhydride, 5- norbornene-2,3-dicarboxylic acid, 2,3-norbornanedicarboxylic acid, 2,3- norbornanedicarboxylic acid anhydride, and mixtures thereof.
The acyclic aliphatic diacid (e) is a residue from open-chain aliphatic dicarboxylic acid compound, its diester derivative, its anhydride, or a combination thereof. Examples of acyclic aliphatic diacids include adipic acid, maleic anhydride, maleic acid, fumaric acid, itaconic anhydride, itaconic acid, citraconic anhydride, citraconic acid, dodecanedioic acid, succinic acid, succinic anhydride, glutaric acid, sebacic acid, azelaic acid, and mixtures thereof.
The alicyclic diacid (d) residue is present in an amount of 60 to 90 mole % and the acyclic aliphatic diacid (e) is in an amount of 10 to 40 mole %, wherein the mole percentages of (d) and (e) are based on the total moles of the diacids, (d) and (e). Althernatively, the alicyclic diacid (d) can be from 62 to 90 mole %, or from 64 to 90 mole %, or from 66 to 90 mole %, or from 68 to 90 mole % or from 70 to 90 mole %, or from 72 to 90 mole %, or from 74 to 90 mole %, or from 76 to 90 mole %, or from 78 to 90 mole %, or from 80 to 90 mole %, or from 82 to 90 mole %, or from 84 to 90 mole %, or from 86 to 90 mole %, or from 62 to 88 mole %, or from 64 to 88 mole %, or from 66 to 88 mole %, or from 68 to 88 mole % or from 70 to 88 mole %, or from
72 to 88 mole %, or from 74 to 88 mole %, or from 76 to 88 mole %, or from 78 to 88 mole %, or from 80 to 88 mole %, or from 82 to 88 mole %, or from 84 to 88 mole %, or from 86 to 88 mole %, or from 64 to 86 mole %, or from 66 to 86 mole %, or from 68 to 86 mole % or from 70 to 86 mole %, or from 72 to 86 mole %, or from 74 to 86 mole %, or from 76 to 86 mole %, or from 78 to 86 mole %, or from 80 to 86 mole %, or from 82 to 86 mole %, or from 84 to 86 mole %, or from 64 to 84 mole %, or from 66 to 84 mole %, or from 68 to 84 mole % or from 70 to 84 mole %, or from 72 to 84 mole %, or from 74 to 84 mole %, or from 76 to 84 mole %, or from 78 to 84 mole %, or from 80 to 84 mole %, or from 82 to 84 mole %, or from 64 to 82 mole %, or from 66 to 82 mole %, or from 68 to 82 mole % or from 70 to 82 mole %, or from 72 to 82 mole %, or from 74 to 82 mole %, or from 76 to 82 mole %, or from 78 to 82 mole %, or from 64 to 80 mole %, or from 66 to 80 mole %, or from 68 to 80 mole % or from 70 to 80 mole %, or from 72 to 80 mole %, or from 74 to 80 mole %, or from 76 to 80 mole %, or from 64 to 78 mole %, or from 66 to 78 mole %, or from 68 to 78 mole % or from 70 to 78 mole %, or from 72 to 78 mole %, or from 74 to 78 mole %. In all of the above ranges the remainder mole percent of the diacid comprising the curable, aliphatic polyester is the acyclic aliphatic diacid (e), wherein the molar sum of (d) and (e) is 100%.
It is further contemplated that the acid component comprise 60 to 70 mole %, or from 62 to 67 mole % of the residues of at least one alicyclic diacid comprising an anhydride and 30 to 40 mole % residues of an acyclic alphatic diacid comprising adipic acid, succinic acid, glutaric acid and mixtures thereof, wherein the sum of (d) and (e) is 100 mole %.
Although not to be bound by any theory, it is believed that the amount of the alicyclic diacid is important because too much of (d) and the monocoat coating described hereinbelow becomes brittle, the coating becomes soft, weatherability is lowered and humidity resistance is reduced. Alternatively, too much of the acyclic aliphatic diacid (e) results in the converse of too little of (d).
In addition to the residues of alicyclic and cyclic aliphatic dicarboxylic acids described above, the diacid residues may further comprise from 0 to 10 mole percent of the residues of at least one monocarboxylic acid, a polybasic acid containing more that 2 carboxylic acid groups and/or an aromatic dicarboxylic acid. Non-limiting
examples of such acids include benzoic acid, acetic acid, 2-ethylhexanoic acid, propionic acid, tert-butyl benzoic acid, and butanoic acid, trimellitic anhydride, phthalic acid, terephthalic acid, isophthalic acid, 2,6-naphthalenedicarboxylic acid, 1,3,4-butanetricarboxylic acid, 1,2,5-hexanetricarboxylic acid, and combinations thereof. Accordingly, the curable polyester contains at least 90 mole % of aliphatic diacid residues, based on the total moles of diacid residues.
The curable, aliphatic polyester of this invention has a hydroxyl number of 50 to 450 mg KOH/g resin. Further examples of hydroxyl number are 50 to 200, or 80 to 200, or 100 to 200, or from 80 to 150, or 100 to 150. In addition, the curable, aliphatic polyester has an acid number of 0 to 80 mg KOH/g polyester, or 0 to 15, or 0 to 10, or 2 to 25 mg KOH/g polyester, or is less than 20, or is 5 to 15 mg KOH/g polyester, or 8 to 12 mg KOH/g polyester.
The number average molecular weight (Mn) of the curable, aliphatic polyester is 300 g/mole to 10,000 g/mole, or 800 to 6000 g/mole, or 500 to 5000 g/mole. The curable, aliphatic polyester has a number average molecular weight (Mn) of from 1,000 g/mole, or 1,500 to 6,000 g/mole, or from 2,000 to 4,000 g/mole. Molecular weights are measured by gel permeation chromatography (GPC) using polystyrene equivalent molecular weight.
The glass transition temperature (abbreviated herein as“Tg”) of the curable, aliphatic polyester is from -10°C to 15°C. Alternataivly, some additional,
representative examples of Tg ranges for the curable, aliphatic polyester are -5 to 15°C, or -5 to 10°C. It is contmeplated that the curable, aliphatic polyester can have a hydroxyl number of 50 to 250 mg potassium hydroxide per gram of polyester, an acid number of 2 to 15 mg potassium hydroxide per gram of polyester, and a number average molecular weight of 700 to 7000 g/mole, and a Tg of -10 to 15°C.
The curable, aliphatic polyester can be prepared by heating the reactants until the desired molecular weight, acid number, or hydroxyl number is reached. The reaction can be monitored by the collection of water (when diacids are used as starting materials) or alcohol (when diesters are used). The polyester typically can be prepared at a temperature range of 150 to 250°C and at atmospheric pressure or under vacuum. In one embodiment, for example, the diacid component and diols used to make the polyester may be partially reacted before the polyol is added. Once the
polyol is added to the reaction mixture, heating is continued until a target acid number is satisfied.
Alternatively, the curable, aliphatic polyester can be prepared in the presence of a process solvent to help remove the water or alcohol by-products of the reaction and to promote the synthesis of the polyester resin. The process solvent may be any solvent known in the art as useful for the preparation of polyester polymers. For example, the process solvent can be a hydrocarbon solvent. In another example, the process solvent can comprise an aromatic hydrocarbon such as, for example, xylene. The xylene can be a pure isomer, or a mixture of ortho, meta, and para isomers. The amount of process solvent may be determined by routine experimentation as understood by those skilled in the art. The process solvent can be added in amounts ranging from 0.5 to 5 weight percent, based on the total weight of reaction mixture.
Optionally, a catalyst may be used to promote the synthesis of the polyester. The catalyst may be any catalyst known in the art to be useful for the formation of polyester resins. For example, the catalyst can be a tin catalyst, such as, for example, FASCAT™ 4100 (available fromPMC Organometallix). The catalyst increases the rate of the polyester resin reaction, as described above, and its amount may be determined by routine experimentation as understood by those skilled in the art.
Ordinarily, the catalyst is added in amounts ranging from 0.01 to 1.00 weight percent based on the total weight of the reactants. A Thermosetting Coating Solution
Another aspect of the present invention is for a thermosetting coating solution comprising:
A. 50 to 90 weight percent, based on the total weight of (A) and (B) of at least one curable, aliphatic polyester, comprising residues of: i. hydroxyl component comprising the residues of:
a. from 5 to 45 mole %, based on the total moles of (a) and (b), of 2,2,4,4-tetraalkylcyclobutane-1,3-diol (TACD);
b. from 55 to 95 mole % based on the total moles of (a) and (b), of a diol other than TACD; and
c. from 3 to 35 mole %, based on the total moles of (a), (b) and
(c), of a polyol;
ii. a diacid component comprising the residues of:
d. from 60 to 90 mole %, based on the total moles of the diacids (d) and (e), of an alicyclic diacid; and
e. from 10 to 40 mole %, based on the total moles of the diacids (d) and (e), of an acyclic aliphatic diacid;
wherein the curable polyester contains diacid residues in an amount of at least 90 mole % of aliphatic diacid residues, based on the total moles of all diacid residues in the curable polyester, and, wherein the curable polyester has a hydroxyl number of 50 to 450 mgKOH/g of polyester, an acid number of 0 to 80 mgKOH/g, and a number average molecular weight of 300 to 10,000 g/mole of polyester; and B. from 10 to 50 weight percent, based on the total weight of the solution, of a solvent other than water.
Advantageously, the thermosetting coating solution has less than 1 weight % of undissolved solids at 25°C. Regarding the curable, aliphatic polyester in the coating solution, the curable, aliphatic polyester component (A) of the coating solution may include any combination of the various embodiments of diacids, diols, polyols, alicyclic and acyclic aliphatic diacids, hydroxyl numbers, and glass transition temperatures described above in accordance with the curable aliphatic polyester of the present invention.
The thermosetting coating solution also comprises 10 to 50 weight percent, based on the total weight of components (A) and (B), of a solvent other than water. Examples of solvents include, but are not limited to, benzene, xylene, mineral spirits, naptha, toluene, acetone, methyl ethyl ketone, methyl n-amyl ketone, methyl isoamyl ketone, n-butyl acetate, isobutyl acetate, t-butyl acetate, n-propyl acetate, isopropyl acetate, ethyl acetate, methyl acetate, ethanol, n-propanol, isopropanol, n-butanol, sec-butanol, isobutanol, ethylene glycol monobutyl ether, propylene glycol n-butyl ether, propylene glycol methyl ether, propylene glycol monopropyl ether, dipropylene glycol methyl ether, diethylene glycol monobutyl ether, trimethylpentanediol mono- isobutyrate, ethylene glycol mono-octyl ether, diacetone alcohol, 2,2,4-trimethyl-1,3-
pentanediol monoisobutyrate (available commercially from Eastman Chemical Co. under the trademark TEXANOL™), Aromatic 100, Aromatic 150, and combinations thereof. The coating composition may also comprise reactive solvents such as, for example, diallyl phthalate, SANTOLINK™ XI-100 polyglycidyl allyl ether (available from Cytec), and others as described, for example, in U.S. Patent No’s 5,349,026 and 5,371,148. Althernatively, the thermosetting coating solution can have from 15 weight % to 50 weight %, or from 25 weight % to 50 weight %, or at from 30 weight % to 50 weight %, or from 35 weight % to 50 weight %, or from 40 weight % to 50 weight %, or from 45 weight % to 50 weight % solvent, wherein the amount of solvent is based on the weight of components (A) and (B), in the coating solution. Desirably, the solvent includes less than 3 weight % water, or less than 2 weight % water, or less than 1 weight % water, based on the weight of the thermosetting coating solution. More desirably, the solvent contains no detectable water as determined using analytical procedures known to those skilled in the art for detecting the presence of water in an organic solvent. Alternatively, the solvent is selected from xylene, methyl n-amyl ketone, n-butyl acetate, Aromatic 100, Aromatic 150 and combinations thereof.
In one aspect the curable polyester resin in the coating solution of the present invention is essentially free of aromatic diacid residues (e.g. less than 1 mole % based on the total acid component); the TACD comprises 2,2,4,4-tetramethyl-1,3- cyclobutanediol; the diol (b) is selected from the group consisting of 2,2-dimethyl- 1,3-propanediol (neopentyl glycol), 1,2-cyclohexanedimethanol, 1,3- cyclohexanedimethanol, 1,4-cyclohexanedimethanol, 2,2,4-trimethyl-1,3-pentanediol, hydroxypivalyl hydroxypivalate, 2-methyl-1,3-propanediol, 2-butyl-2-ethyl-1,3- propanediol, 1,4-butanediol, and 1,6-hexanediol, ethylene glycol, propylene glycol, diethylene glycol, dipropylene glycol, triethylene glycol, tetraethylene glycol, polyethylene glycol and mixtures thereof; the diol (b) includes at least 15 mole % neopentyl glycol, based on the total moles of (b); the molar ratio of (b):(a) is from 1.3:1 to 2.5:1, or can be from 1.5:1 to 2.0:1, or can be from 1.1:1 to 1.8:1; the polyol (c) is one or more polyols selected from the group consisting of 1,1,1- trimethylolpropane (TMP), 1,1,1-trimethylolethane, glycerin, and pentaerythritol; the alicyclic diacid (iv) is selected from the group consisting of hexahydrophthalic
anhydride (HHPA), tetrahydrophthalic anhydride, tetrachlorophthalic anhydride, 5- norbornene-2,3-dicarboxylic anhydride, 5-norbornene-2,3-dicarboxylic acid, 2,3- norbornanedicarboxylic acid, 2,3-norbornanedicarboxylic acid anhydride, and mixtures thereof; the alicyclic diacid (d) comprises hexahydrophthalic anhydride; the acyclic aliphatic diacid (e) is selected from the group consisting of adipic acid, maleic anhydride, maleic acid, fumaric acid, itaconic anhydride, itaconic acid, citraconic anhydride, succinic acid, succinic anhydride, glutaric acid, citraconic acid, dodecanedioic acid, sebacic acid, azelaic acid, and mixtures thereof; the residues of the acyclic aliphatic diacid (e) are obtained from compounds such as adipic acid; (a) comprises from 30 to 40 mole % 2,2,4,4-tetramethyl-1,3-cyclobutanediol and (b) comprises from 60 to 70 mole % of a diol selected from the group consisting of 2,2- dimethyl-1,3-propanediol, 1,2-cyclohexanedimethanol, 1,3-cyclohexanedimethanol, 1,4- cyclohexanedimethanol, 2,2,4-trimethyl-1,3-pentanediol, hydroxypivalyl hydroxypivalate, 2-methyl-1,3-propanediol, 2-butyl-2-ethyl-1,3-propanediol, 1,4- butanediol, 1,6-hexanediol and mixtures thereof, wherein the mole % is based on the total moles of (a) and (b); the acid component comprises 60 to 70 mole % of the residues of at least one alicyclic diacid comprising an anhydride and 30 to 40 mole % residues of an acyclic alphatic diacid comprising adipic acid, succinic acid, glutaric acid and mixtures thereof; comprising 20 to 30 mole % residues of (c), based on the total moles of the (a), (b), and (c); comprises from 62 to 67 mole % residues of (d), based on based on the total moles of the diacids (d) and (e); the curable polyester has an acid number of less than 20 mgKOH/g of polyester; and the curable polyester has a hydroxyl number of 100 to 200 mgKOH/g of polyester and the acid number is from 5 to 15 mgKOH/g of polyester. Thermosetting Monocoat Coating
Another aspect of the present invention is for a thermosetting monocoat coating composition, comprising:
A. 50 to 90 weight percent, based on the total weight of (A) and (C), of at least one curable, aliphatic polyester, comprising residues of: i. hydroxyl component comprising the residues of:
a. from 5 to 45 mole %, based on the total moles of (a) and (b),
of 2,2,4,4-tetraalkylcyclobutane-1,3-diol (TACD);
b. from 55 to 95 mole % based on the total moles of (a) and (b), of a diol other than TACD; and
c. from 3 to 35 mole %, based on the total moles of (a), (b) and (c), of a polyol;
ii. a diacid component comprising the residues of:
d. from 60 to 90 mole %, based on the total moles of the diacids (d) and (e), of an alicyclic diacid; and
e. from 10 to 40 mole %, based on the total moles of the diacids (d) and (e), of an acyclic aliphatic diacid;
wherein the curable polyester contains diacid residues in an amount of at least 90 mole % of aliphatic diacid residues, based on the total moles of all diacid residues in the curable polyester, and, wherein the curable polyester has a hydroxyl number of 50 to 450 mgKOH/g of polyester, an acid number of 0 to 80 mgKOH/g, and a number average molecular weight of 300 to 10,000 g/mole of polyester; and
B. from 10 to 50 weight percent, based on the total weight of the coating composition, of a solvent other than water; and
C. from 10 to 50 weight percent, based on the total weight of (A) and (C), comprising at least one compound reactive with a carboxylic acid or a hydroxyl group.
It is understood that the curable, aliphatic polyester component (A) of the coating composition may include any combination of the various embodiments of diacids, diols, polyols, acid and hydroxyl numbers, and glass transition temperatures described hereinabove in accordance with the present invention, and in incorporated into the description of the monocoat coating composition by reference. Thus, in one aspect the curable, aliphatic polyester in the thermosetting monocoat coating of the present invention: is essentially free of aromatic diacid residues (e.g. less than 1 mole% based on the total acid component); the TACD comprises 2,2,4,4-tetramethyl- 1,3-cyclobutanediol; the diol (b) is selected from the group consisting of 2,2- dimethyl-1,3-propanediol (neopentyl glycol), 1,2-cyclohexanedimethanol, 1,3- cyclohexanedimethanol, 1,4-cyclohexanedimethanol, 2,2,4-trimethyl-1,3-pentanediol,
hydroxypivalyl hydroxypivalate, 2-methyl-1,3-propanediol, 2-butyl-2-ethyl-1,3- propanediol, 1,4-butanediol, and 1,6-hexanediol, ethylene glycol, propylene glycol, diethylene glycol, dipropylene glycol, triethylene glycol, tetraethylene glycol, polyethylene glycol and mixtures thereof; the diol (b) includes at least 15 mole % neopentyl glycol, based on the total moles of (b); the molar ratio of (b):(a) is from 1.3:1 to 2.5:1, or can be from 1.5:1 to 2.0:1, or can be from 1.1:1 to 1.8:1; the polyol (c) is one or more polyols selected from the group consisting of 1,1,1- trimethylolpropane (TMP), 1,1,1-trimethylolethane, glycerin, and pentaerythritol; the alicyclic diacid (iv) is selected from the group consisting of hexahydrophthalic anhydride (HHPA), tetrahydrophthalic anhydride, tetrachlorophthalic anhydride, 5- norbornene-2,3-dicarboxylic anhydride, 5-norbornene-2,3-dicarboxylic acid, 2,3- norbornanedicarboxylic acid, 2,3-norbornanedicarboxylic acid anhydride, and mixtures thereof; the alicyclic diacid (d) comprises hexahydrophthalic anhydride; the acyclic aliphatic diacid (e) is selected from the group consisting of adipic acid, maleic anhydride, maleic acid, fumaric acid, itaconic anhydride, itaconic acid, citraconic anhydride, citraconic acid, dodecanedioic acid, sebacic acid, azelaic acid, and mixtures thereof; the residues of the acyclic aliphatic diacid (e) are obtained from compounds such as adipic acid; (a) comprises from 30 to 40 mole % 2,2,4,4- tetramethyl-1,3-cyclobutanediol and (b) comprises from 60 to 70 mole % of a diol selected from the group consisting of 2,2-dimethyl-1,3-propanediol, 1,2- cyclohexanedimethanol, 1,3-cyclohexanedimethanol, 1,4- cyclohexanedimethanol, 2,2,4-trimethyl-1,3-pentanediol, hydroxypivalyl hydroxypivalate, 2-methyl-1,3- propanediol, 2-butyl-2-ethyl-1,3-propanediol, 1,4-butanediol, 1,6-hexanediol and mixtures thereof, wherein the mole % is based on the total moles of (a) and (b); the acid component comprises 60 to 70 mole % of the residues of at least one alicyclic diacid comprising an anhydride and 30 to 40 mole % residues of an acyclic alphatic diacid comprising adipic acid, succinic acid, glutaric acid and mixtures thereof;
comprising 20 to 30 mole % residues of (c), based on the total moles of the (a), (b), and (c); comprises from 62 to 67 mole % residues of (d), based on based on the total moles of the diacids (d) and (e); the curable polyester has an acid number of less than 20 mgKOH/g of polyester; and the curable polyester has a hydroxyl number of 100 to 200 mgKOH/g of polyester and the acid number is from 5 to 15 mgKOH/g of
polyester.
The curable, aliphatic polyester resin comprises a reactive functional group, typically a hydroxyl group or carboxyl group for the purpose of later reacting with a crosslinker in the thermoseting coating formulation. The functional group is controlled by having either excess diol or acid (from dicarboxylic acid or
tricarboxylic acid) in the polyester resin composition. The desired crosslinking pathway will determine whether the polyester resin will be hydroxyl-terminated or carboxylic acid-terminated. The concept is known to those skilled in the art and described in Organic Coatings Science and Technology, 2nd ed., p. 246-257, by Z. Wicks, F. Jones, and S. Pappas, Wiley, New York, 1999, the disclosure of which is incorporated herein by reference.
Alternative, thermosetting monocoat coating composition can have from 60 to 85 weight %, or from 70 to 80 weight % of (A); and from 15 to 40 wight %, or from 20 to 30 weight % of the crosslinker (C), wherein the weight % of (A) and (C) are based on the total weight of the curable polyester (A) and the crosslinker (C).
Typically, the crosslinker will be a compound, generally known in the art, that can react with either the carboxylic acid-terminated or hydroxyl-terminated polyester resin. For example, the crosslinker can comprise at least one compound chosen from epoxides, melamines, hydroxy alkyl amides, and isocyanates. For example, epoxide crosslinkers will react with a carboxylic acid-terminated polyester resin, whereas melamines, isocyanates, and isocyanurates will react with a hydroxyl-terminated polyesters. Desirably, the crosslinker is an aminoplast or an isocyanate crosslinker.
The aminoplast crosslinker (or cross-linking agent) is preferably a melamine or "amino" crosslinker which are well-known in the art and can be used in the coating composition of the invention. Such melamine-formaldehyde type cross-linking agents, i.e., a cross-linking agent having a plurality of --N(CH2OR3)2 functional groups, wherein R3 is C1–C4 alkyl, and desirably is a methyl moiety.
The cross-linking agent may also be a modified melamine-formaldehyde type resin such as toluene sulfonamide modified melamine-formaldehyde resins, and the like. For example, the coating composition of the present invention can comprise at least one melamine compound chosen from hexamethoxymethylmelamine, tetramethoxymethylbenzoguanamine, tetramethoxymethylurea, mixed
butoxy/methoxy substituted melamines and mixtures thereof. Some examples of commercially available melamine crosslinkers include the CYMEL™300 series and CYMEL™ 1100 series melamine crosslinkers, available from Cytec Surface
Specialties. The polyester to melamine weight ratio is typically from 1 to 9, or from 1.5 to 6, or 2 to 4.
In addition to melamines, isocyanates and isocyanurates can be used as crosslinkers in accordance with the invention. Representative isocyanates and isocyanurates include, but are not limited to, toluene diisocyanate, isocyanurates of toluene diisocyanate, diphenylmethane 4,4'-diisocyanate, isocyanurates of 4,4'- diisocyanate, methylenebis-4,4'-isocyanatocyclohexane, isophorone diisocyanate, isocyanurates of isophorone diisocyanate, the biuret of 1,6-hexamethylene
diisocyanate, 1,6-hexamethylene diisocyanate, isocyanurates of 1,6-hexamethylene diisocyanate, 1,4-cyclohexane diisocyanate, p-phenylene diisocyanate, and
triphenylmethane 4,4',4"-triisocyanate, tetramethyl xylene diisocyanate, metaxylene diisocyanate, polyisocyanates, 1,4-butylene diisocyanate, methylene bis (4-cyclohexyl isocyanate), isophorone diisocyanate and isocyanate-terminated adducts of ethylene glycol, 1,4-butylene glycol, trimethylol propane, or combinations thereof. Desirably, the isocyanate is selected from 1,6-hexamethylene diisocyanate, methylene bis (4- cyclohexyl isocyanate), isophorone diisocyanate, 2,4-toluene diisocyanate, and Bayhydur® 302 (BAYER MaterialScience).
The coating composition also can comprise isocyanate-terminated adducts of diols and polyols as crosslinkers. These crosslinkers are formed by reacting more than one equivalent of a diisocyanate, such as those mentioned above, with one equivalent of a diol or polyol to form a higher molecular weight isocyanate prepolymer with a isocyanate functionality of 2 to 3. Some commercial examples of isocyanate-terminated adducts include isocyanate crosslinkers under the
DESMODUR™ and MONDUR™ trademarks available from Bayer Material Science and under the TOLONATE™ trademark from Perstorp Corporation.
It may be desirable to utilize a one or more catalysts for promoting cross- linking. Representative crosslinking catalysts include carboxylic acids, sulfonic acids, tertiary amines, tertiary phosphines, tin compounds, or combinations of these compounds. Some specific examples of crosslinking catalysts include p-
toluenesulfonic acid, the NACURE™ 155, 5076, and 1051 catalysts sold by King Industries, BYK 450, 470, available from BYK-Chemie U.S.A., methyl tolyl sulfonimide, dodecylbenzene sulfonic acid, dinonylnaphthalene sulfonic acid, and dinonylnaphthalene disulfonic acid, benzoic acid, triphenylphosphine,
dibutyl¬tindilaurate, and dibutyltindiacetate. The curable, aliphatic polyester can comprise hydroxyl-terminated end groups and the crosslinker can comprise an isocyanate. The coating composition also can comprise at least one isocyanate crosslinking catalyst such as, for example,
FASCAT™ 4202 (dibutyltindilaurate), FASCAT™ 4200 (dibutyltindiacetate, both available from Arkema), DABCO™ T-12 (available from Air Products) and K-KAT™ 348, 4205, 5218, XC-6212™ non-tin catalysts (available from King Industries), and tertiary amines.
Stoichiometric calculations for the curable, aliphatic polyester and isocyanate reaction are known to those skilled in the art and are described in The Chemistry of Polyurethane Coatings, Technical Publication, p. 20, by Bayer Material Science, 2005. Persons having ordinary skill in the art will understand that crosslinking between the polyester resin and isocyanate reaches maximum molecular weight and optimal properties associated with molecular weight at an isocyanate:hydroxyl equivalent ratio of 1:1; that is, when one equivalent of isocyanate (-NCO) reacts with one equivalent of hydroxyl (-OH). Typically, however, a small excess of isocyanate, for example, 5 to 10% above a 1:1 equivalent, is used to allow for the loss of isocyanate by the reaction with adventitious moisture from the atmosphere, solvents, and pigments. Other NCO:OH ratios can be used; for example, it may be desirable to vary the NCO to OH ratio to less than 1:1 to improve flexibility or greater than 1:1 to produce harder, more chemical resistant, and more weather resistant coatings.
For the present invention, the solvent borne, thermosetting coating composition has an NCO:OH ratio, on an equivalent basis, of 0.9:1.0 to 1.5:1.0. Examples of other NCO:OH ratios are 0.95:1.0 to 1.25:1.0 and 0.95:1.0 to 1.1:1.0.
The thermosetting coating composition also comprises 10 to 85 weight percent, based on the total weight of components (A), (B), and (C) of a solvent other than water. Examples of solvents include, but are not limited to, benzene, xylene, mineral
spirits, naptha, toluene, acetone, methyl ethyl ketone, methyl n-amyl ketone, methyl isoamyl ketone, n-butyl acetate, isobutyl acetate, t-butyl acetate, n-propyl acetate, isopropyl acetate, ethyl acetate, methyl acetate, ethanol, n-propanol, isopropanol, n- butanol, sec-butanol, isobutanol, ethylene glycol monobutyl ether, propylene glycol n- butyl ether, propylene glycol methyl ether, propylene glycol monopropyl ether, dipropylene glycol methyl ether, diethylene glycol monobutyl ether,
trimethylpentanediol mono-isobutyrate, ethylene glycol mono-octyl ether, diacetone alcohol, 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate (available commercially from Eastman Chemical Co. under the trademark TEXANOL™), or combinations thereof. The coating composition may also comprise reactive solvents such as, for example, diallyl phthalate, SANTOLINK™ XI-100 polyglycidyl allyl ether (available from Cytec), and others as described, for example, in U.S. Patent No’s 5,349,026 and 5,371,148. Althernatively, the thermosetting coating composition comprises from 5 weight % up to 20 weight %, or from 5 weight % up to 25 weight %, or from 5 weight % up to 30 weight %, or from 5 weight % up to 35 weight %, or from 5 weight % up to 40 weight %, or from 5 weight % up to 45 weight %, or from 5 weight % up to 50 weight % of a solvent, based on the weight of components (A), (B), and (C) in the coating composition.
In another example, the thermosetting coating composition can comprise 25 to 35 weight percent solvent, 20 to 35 weight percent of a melamine crosslinker, and a crosslinking catalyst comprising p-toluenesulfonic acid. In another aspect, the thermosetting coating composition comprises 25 to 35 weight percent solvent and 20 to 35 weight percent hexamethoxy-methylmelamine.
The coating composition of the instant invention may further contain at least one coating additive known in the art. Examples of coating additives include, but are not limited to, leveling, rheology and flow control agents such as silicones, fluorocarbons or cellulosics; extenders; plasticizers; flatting agents; pigment wetting and dispersing agents; ultraviolet (UV) absorbers; UV light stabilizers; defoaming and antifoaming agents; anti-settling, anti-sag and bodying agents; anti-skinning agents; anti-flooding and anti-floating agents; and corrosion inhibitors. Specific examples of such additives can be found in the Raw Material Index and Buyer's Guide, published by the National Paint & Coatings Association, 1500 Rhode Island Avenue, N.W.,
Washington., DC 20005. Further examples of such additives may be found in U.S. Patent No. 5,371,148.
Examples of flatting agents include, but are not limited to, synthetic silica, available from the Davison Chemical Division of W. R. Grace & Company as SYLOID™; polypropylene, available from Hercules Inc., as HERCOFLAT™; and synthetic silicate, available from J. M. Huber Corporation, as ZEOLEX™.
Examples of dispersing agents include, but are not limited to, sodium bis(tridecyl) sulfosuccinate, di(2-ethyl hexyl) sodium sulfosuccinate, sodium dihexylsulfosuccinate, sodium dicyclohexyl sulfosuccinate, diamyl sodium
sulfosuccinate, sodium dusobutyl sulfosuccinate, disodium isodecyl sulfosuccinate, disodium ethoxylated alcohol half ester of sulfosuccinic acid, disodium alkyl amido polyethoxy sulfosuccinate, tetra-sodium N-(1,2-dicarboxyethyl)-N-octadecyl sulfosuccinamate, disodium N-octasulfosuccinamate, sulfated ethoxylated
nonylphenol, 2-amino-2-methyl-1-propanol, and the like.
Examples of viscosity, suspension, and flow control agents include, but are not limited to, polyaminoamide phosphate, high molecular weight carboxylic acid salts of polyamine amides, and alkylene amine salts of an unsaturated fatty acid, all available from BYK Chemie USA as ANTI TERRA™. Further examples include, but are not limited to, polysiloxane copolymers, polyacrylate solution, cellulose esters, hydroxyethyl cellulose, hydroxypropyl cellulose, polyamide wax, polyolefin wax, hydroxypropyl methyl cellulose, polyethylene oxide, and the like.
Several proprietary antifoaming agents are commercially available and include, but are not limited to, BUBREAK™, available from Buckman Laboratories Inc., BYK™, available from BYK Chemie, U.S.A., FOAMASTER™ and NOPCO™, available from Henkel Corp./Coating Chemicals, DREWPLUS™, available from the Drew Industrial Division of Ashland Chemical Company, TROYSOL™ and
TROYKYD™, available from Troy Chemical Corporation, and SAG™, available from Union Carbide Corporation.
Examples of UV absorbers, UV light stabilizers, and antioxidants include, but are not limited to, substituted benzophenone, substituted benzotriazoles, hindered amines, hindered benzoates, phenols, and phosphites, some of which are available from Cytec Specialty Chemicals as CYASORB® UV, and from Ciba Specialty
Chemicals as TINUVIN®, CHIMASSORB®, IRGANOX® and IRGAFOS®;
diethyl-3-acetyl-4-hydroxy-benzyl-phosphonate, 4-dodecyloxy-2-hydroxy
benzophenone, and resorcinol monobenzoate. For example, in one embodiment, the thermosetting coating compositon can contain IRGANOX® 1010 antioxidant, available from Ciba Specialty Chemicals.
Such paint or coating additives as described above form a relatively minor proportion of the coating composition, generally 0.05 weight percent to 5.00 weight percent. For example, a coating composition optionally may contain at least one of the above-described additives and at least one pigment.
The solvent borne thermosetting coating composition, as described above, also may comprise at least one pigment. Typically, the pigment is present in an amount of 20 to 60 weight percent, based on the total weight of the coating composition.
Examples of pigments include those generally recognized by persons of ordinary skill in the art of surface coatings. For example, the pigment may be a typical organic or inorganic pigment, especially those set forth by the Colour Index, 3rd ed., 2nd Rev., 1982, published by the Society of Dyers and Colourists in association with the American Association of Textile Chemists and Colorists. Other examples of suitable pigments include, but are not limited to, titanium dioxide, barytes, clay, calcium carbonate, CI Pigment White 6 (titanium dioxide), CI Pigment Red 101 (red iron oxide), CI Pigment Yellow 42, CI Pigment Blue 15,15:1,15:2,15:3,15:4 (copper phthalocyanines); CI Pigment Red 49:1 and CI Pigment Red 57:1. Colorants such as, for example, phthalocyanine blue, molybdate orange, or carbon black also may be added to the coating composition. For example, the solvent borne, thermosetting coating formulations can contain titanium dioxide as the pigment.
The thermosetting coating composition of this invention may optionally comprise a thermosetting acrylic ("TSA") resins. Such TSA resins are typically prepared by free radical polymerization in bulk or in a solvent. Initiators are of the free radical type and are usually organic peroxides or azo compounds, such as benzoyl peroxide, t-butyl hydroperoxide, t-butyl peroxide, t-butyl peroxybenzoate,
azobisisobutyronitrile, and 2,2'-azobis(2,4-dimethyl)-valeronitrile. The reaction is preferably carried out at the reflux temperature of the solvent used, which is generally higher than the thermal decomposition temperature of the initiator employed. The
acrylic resin is composed of ethylenically unsaturated monomers that include acrylate, methacrylate, styrene, (meth) acrylic acid, and vinyl esters. They further contain hydroxyl, epoxy, carboxyl, blocked-phenol and/or acetoacetoxy functional groups. Suitable examples of preparation methods and components of the acrylic resin include those known in the art including, but not limited to, those described above, and in Resins for Surface Coatings, Vol. II, p. 121-210, ed. by P.K.T. Oldring and G.
Hayward, SITA Technology, London, UK, 1987.
Examples of hydroxyl functional TSA resins include the MACRYNAL™ series, available from Cytec Surface Specialties; the ACRYLOID™ series, available from Rohm and Haas; and the JONCRYL™ series, available from BASF Corporation. One specific example of a hydroxyl functional TSA resin used is MACRYNAL™ SM 515/70BAC, available from Cytec Surface Specialties.
The curable, aliphatic polyester and the TSA resin can be blended together. The weight percent of polyester in the blend is 5 to 50 weight %, or can be from 10 to 40 weight percent, or may be from 15 to 30 weight percent.
Typically, the thermosetting coating composition and additives can be formulated into coating that contains 40 to 90% non-volatiles. After formulation, the coating composition can be applied to a substrate or article using method and techniques known to those skilled in the coating art.
Thus, in accordancd with another aspect of the invention is a shaped or formed article that has been coated with the coating compositions of the present invention. The substrate can be any common substrate such as paper; polymer films such as polyethylene or polypropylene; wood; metals such as aluminum, steel or galvanized sheeting; glass; urethane elastomers; primed (painted) substrates; and the like. In one aspect, the substrate is a metal, such as iron or aluminum, that has been coated with the monocoat coating composition described herein, heated to a predetermined temperature and for a predetermined amount of time to produce a cured thermosetting coating on the substrate. In one aspect, the metal is at least one surface of an automobile. The cured coating has an impact resistance of greater than 35 as determined in accordance with ASTM 4366. The cured coating can also have an impact resistance of from 36 to 200, or from 50 to 200, or from 60 to 200, or from 50 to 150, or from 60 to 125 as determined in accordance with ASTM 4366.
The cured coating has a gloss retention after abrasion, based on ASTM D 6279, of greater than 50%, or greater than 55%, or greater than 60%, or greater than 70%. Additionally, the cured coating has a gloss retention on exposure to artificial weather, based on SAE J2527, of greater than 85% after 1000 hours, or greater than 85% after 1500 hours, or greater than 85% after 2000 hours, or greater than 85% after 2500 hours, or greater than 85% after 3000 hours, or greater than 85% after 3500 hours, or greater than 85% after 4000 hours.
The coating composition can be coated onto a substrate using techniques known in the art. Accordingly, another aspect of the present invention is a method for applying a thermosetting monocoat coating composition to an article or substrate. The method includes the steps of:
I. providing a suitable substrate for coating;
II. providing a thermosetting monocoat coating composition comprising:
A. 50 to 90 weight percent, based on the total weight of (A) and (C), of at least one curable, aliphatic polyester, comprising residues of: i. hydroxyl component comprising the residues of:
a. from 5 to 45 mole %, based on the total moles of (a) and (b), of 2,2,4,4-tetraalkylcyclobutane-1,3-diol (TACD);
b. from 55 to 95 mole % based on the total moles of (a) and (b), of a diol other than TACD; and
c. from 3 to 35 mole %, based on the total moles of (a), (b) and (c), of a polyol;
ii. a diacid component comprising the residues of:
d. from 60 to 90 mole %, based on the total moles of the diacids (d) and (e), of an alicyclic diacid; and
e. from 10 to 40 mole %, based on the total moles of the diacids (d) and (e), of an acyclic aliphatic diacid;
wherein the curable polyester contains diacid residues in an amount of at least 90 mole % of aliphatic diacid residues, based on the total moles of all diacid residues in the curable polyester, and, wherein the curable polyester has a hydroxyl number of 50 to 450 mgKOH/g of polyester, an acid number of 0 to
80 mgKOH/g, and a number average molecular weight of 300 to 10,000 g/mole of polyester;
B. from 10 to 50 weight percent, based on the total weight of the coating composition, of a solvent other than water; and
C. from 10 to 50 weight percent, based on the total weight of (A) and (C), of a crosslinker comprising an aminoplast and/or isocyanate;
III. applying the thermosetting monocoat coating composition to the substrate to produce a coated substrate; and
IV. applying heat to the coated substrate to a predetermined temperature and for a predetermined time to produce a cured thermosetting coating.
As previously noted, the substrate can be paper; polymer films such as polyethylene or polypropylene; wood; metals such as aluminum, steel or galvanized sheeting; glass; urethane elastomers; primed (painted) substrates; and the like.
The thermosetting monocoat coating composition is as described above, the disclosure of which is incorporated into this aspect of the invention by reference. The thermosetting monocoat coating composition can be applid to substrate using techniques known to those skilled in the art. For example, the thermosetting monocoat coating composition can be applied by brush application, spraying, draw- down, roll-coating, to a thickness of 0.5 to 4 mils of wet coating onto the substrate. Methods for spraying the monocoat coating composition onto the substrate include high volume low pressure (HVLP), low volume low pressure (LVLP), rotational bell or rotary atomizer; hot spray, airless spraying and air assisted airless spraying systems.
The coating can be cured at ambient (room) temperature or heated in a forced air oven to a temperature of 35°C to 400°C, or 50°C to 200°C, or 60°C to 175°C, or 80°C to 175°C, or 50°C to 175°C., for a period of from 5 seconds to 5 hours. The time necessary to cure the coating at the aforementioned temperatures can be from 5 minutes to 5 hours, or from 10 minutes to 4 hours; or from 20 minutes to 3 hours, or from 30 minutes to 1 hour. However, it is also contemplated that the cure time will be from 5 minutes to 90 minutes. The cured coating on the substrate is then allowed to cool. Further examples of typical application and curing methods can be found in US patent no.'s 4,737,551 and 4,698,391 and 3,345,313.
The invention is also further described in the following description of groupings. The embodiments that are useful in any of the above embodiments, as stated below, is with reference to the embodiments within its grouping. GROUP 1
In a first embodiment, there is provided a curable, aliphatic polyester comprising residues of:
i. a hydroxyl component, said hydroxyl component comprising the residues of:
a. from 5 to 45 mole %, based on the total moles of (a) and (b), of 2,2,4,4-tetraalkylcyclobutane-1,3-diol (TACD);
b. from 55 to 95 mole % based on the total moles of (a) and (b), of a diol other than TACD; and
c. from 3 to 35 mole %, based on the total moles of (a), (b) and (c), of a polyol;
ii. a diacid component, said diacid component comprising the residues of: d. from 60 to 90 mole %, based on the total moles of the diacids of an alicyclic diacid; and
e. from 10 to 40 mole %, based on the total moles of the diacids an acyclic aliphatic diacid;
wherein the curable polyester contains diacid residues in an amount of at least 90 mole % of aliphatic diacid residues, based on the total moles of all diacid residues in the curable polyester, and, wherein the curable polyester has a hydroxyl number of 50 to 450 mgKOH/g of polyester, an acid number of 0 to 80 mgKOH/g, and a number average molecular weight of 300 to 10,000 g/mole of polyester.
In another embodiment, the diacid can be essentially free of aromatic diacid residues.
In any of the above embodiments, the TACD comprises 2,2,4,4-tetramethyl-1,3- cyclobutanediol.
In any of the above embodiments, the diol (b) is selected from the group consisting of 2,2-dimethyl-1,3-propanediol (neopentyl glycol), 1,2-
cyclohexanedimethanol, 1,3-cyclohexanedimethanol, 1,4-cyclohexanedimethanol, 2,2,4-trimethyl-1,3-pentanediol, hydroxypivalyl hydroxypivalate, 2-methyl-1,3- propanediol, 2-butyl-2-ethyl-1,3-propanediol, 1,4-butanediol, and 1,6-hexanediol, ethylene glycol, propylene glycol, diethylene glycol, dipropylene glycol, triethylene glycol, tetraethylene glycol, polyethylene glycol and mixtures thereof.
In any of the above embodiments, the diol (b) is selected from the group consisting of 2,2-dimethyl-1,3-propanediol (neopentyl glycol), 1,2- cyclohexanedimethanol, 1,3-cyclohexanedimethanol, 1,4- cyclohexanedimethanol, 2,2,4-trimethyl-1,3-pentanediol, hydroxypivalyl hydroxypivalate, 2-methyl-1,3- propanediol, 2-butyl-2-ethyl-1,3-propanediol, 1,4-butanediol, 1,6-hexanediol and mixtures thereof.
In any of the above embodiments, at least 15 mole % of the diol (b) residues is neopentyl glycol based on the total moles of diol (b).
In any of the above embodiments, the molar ratio of (b):(a) is from 1.3:1 to 2.5:1.
In any of the above embodiments, the molar ratio of (b):(a) is from 1.5:1 to 2.0:1.
In any of the above embodiments, the molar ratio of (b):(a) is from 1.1:1 to 1.8:1.
In any of the above embodiments, the polyol (c) is one or more selected from the group consisting of 1,1,1-trimethylolpropane (TMP), 1,1,1-trimethylolethane, glycerin, and pentaerythritol.
In any of the above embodiments, the alicyclic diacid (d) is selected from the group consisting of hexahydrophthalic anhydride (HHPA), tetrahydrophthalic anhydride, tetrachlorophthalic anhydride, 5-norbornene-2,3-dicarboxylic anhydride, 5-norbornene-2,3-dicarboxylic acid, 2,3-norbornanedicarboxylic acid, 2,3- norbornanedicarboxylic acid anhydride, and mixtures thereof.
In any of the above embodiments, the curable polyester of claim 1, wherein the alicyclic diacid (d) comprises hexahydrophthalic anhydride.
In any of the above embodiments, the acyclic aliphatic diacid (e) is selected from the group consisting of adipic acid, maleic anhydride, maleic acid, fumaric acid, itaconic anhydride, succinic acid, succinic anhydride, glutaric acid, itaconic acid,
citraconic anhydride, citraconic acid, dodecanedioic acid, sebacic acid, azelaic acid, and mixtures thereof.
In any of the above embodiments, the acyclic aliphatic diacid (e) comprises adipic acid.
In any of the above embodiments, (a) comprises from 30 to 40 mole % 2,2,4,4- tetramethyl-1,3-cyclobutanediol and (b) comprises from 60 to 70 mole % of a diol selected from the group consisting of 2,2-dimethyl-1,3-propanediol, 1,2- cyclohexanedimethanol, 1,3-cyclohexanedimethanol, 1,4- cyclohexanedimethanol, 2,2,4-trimethyl-1,3-pentanediol, hydroxypivalyl hydroxypivalate, 2-methyl-1,3- propanediol, 2-butyl-2-ethyl-1,3-propanediol, 1,4-butanediol, 1,6-hexanediol and mixtures thereof, wherein the mole % is based on the total moles of (a) and (b).
In any of the above embodiments, the diacid component comprise 60 to 70 mole % of the residues of at least one alicyclic diacid comprising an anhydride and 32 to 38 mole % residues of an acyclic alphatic diacid comprising adipic acid, succinic anhydride,succinic acid, glutaric acid and mixtures thereof, and, wherein the curable polyester is obtained with no or less than 3 mole% acids having a carboxylic acid functionality of greater than 2 based on the total moles of all carboxylic acid compound residues.
In any of the above embodiments, the comprising 20 to 30 mole % residues of (c), based on the total moles of the diols and polyol, (a), (b), and (c).
In any of the above embodiments, the comprising from 62 to 67 mole % residues of (d), based on based on the total moles of the diacids (d) and (e).
In any of the above embodiments, the acid number is less than 20 mgKOH/g of polyester.
In any of the above embodiments, the hydroxyl number is of 100 to 200 mgKOH/g of polyester and the acid number is from 5 to 15 mgKOH/g of polyester.
GROUP 2
There is provided a thermosetting coating solution comprising:
A. 50 to 90 weight percent, based on the total weight of (A) and (B) of at least one curable, aliphatic polyester, comprising residues of:
i. hydroxyl component, said hydroxyl component comprising the residues of:
a. from 5 to 45 mole %, based on the total moles of (a) and (b), of 2,2,4,4-tetraalkylcyclobutane-1,3-diol (TACD); b. from 55 to 95 mole % based on the total moles of (a) and (b), of a diol other than TACD; and
c. from 3 to 35 mole %, based on the total moles of (a), (b) and (c), of a polyol;
ii. a diacid component, said diacid component comprising the residues of:
d. from 60 to 90 mole %, based on the total moles of the diacids (d) and (e), of an alicyclic diacid; and
e. from 10 to 40 mole %, based on the total moles of the diacids (d) and (e), of an acyclic aliphatic diacid;
wherein the curable polyester contains diacid residues in an amount of at least 90 mole % of aliphatic diacid residues, based on the total moles of all diacid residues in the curable polyester, and, wherein the curable polyester has a hydroxyl number of 50 to 450 mgKOH/g of polyester, an acid number of 0 to 80 mgKOH/g, and a number average molecular weight of 300 to 10,000 g/mole of polyester; and
B. from 10 to 50 weight percent, based on the total weight of the solution, of a solvent other than water.
In the above embodiment, the solution has less than 1 weight % of undissolved solids.
In any of the above embodiments, the diacid is essentially free of aromatic diacid residues. In any of the above embodiments, the TACD comprises 2,2,4,4-tetramethyl-1,3- cyclobutanediol.
In any of the above embodiments, the said diol (b) is selected from the group consisting of 2,2-dimethyl-1,3-propanediol (neopentyl glycol), 1,2- cyclohexanedimethanol, 1,3-cyclohexanedimethanol, 1,4-cyclohexanedimethanol,
2,2,4-trimethyl-1,3-pentanediol, hydroxypivalyl hydroxypivalate, 2-methyl-1,3- propanediol, 2-butyl-2-ethyl-1,3-propanediol, 1,4-butanediol, and 1,6-hexanediol, ethylene glycol, propylene glycol, diethylene glycol, dipropylene glycol, triethylene glycol, tetraethylene glycol, polyethylene glycol and mixtures thereof.
In any of the above embodiments, the said diol (b) is selected from the group consisting of 2,2-dimethyl-1,3-propanediol (neopentyl glycol), 1,2- cyclohexanedimethanol, 1,3-cyclohexanedimethanol, 1,4- cyclohexanedimethanol, 2,2,4-trimethyl-1,3-pentanediol, hydroxypivalyl hydroxypivalate, 2-methyl-1,3- propanediol, 2-butyl-2-ethyl-1,3-propanediol, 1,4-butanediol, 1,6-hexanediol and mixtures thereof.
In any of the above embodiments, wherein at least 15 mole % of the diol (b) residues is neopentyl glycol based on the total moles of diol (b).
In any of the above embodiments, the molar ratio of (b):(a) is from 1.1:1 to 2.5:1.
In any of the above embodiments, the thermosetting coating solution of claim 21, wherein the molar ratio of (b):(a) is from 1.5:1 to 2.0:1.
In any of the above embodiments, the molar ratio of (b):(a) is from 1.1:1 to 1.8:1.
In any of the above embodiments, the polyol (c) is one or more selected from the group consisting of 1,1,1-trimethylolpropane (TMP), 1,1,1-trimethylolethane, glycerin, and pentaerythritol.
In any of the above embodiments, the alicyclic diacid (d) is selected from the group consisting of hexahydrophthalic anhydride (HHPA), tetrahydrophthalic anhydride, tetrachlorophthalic anhydride, 5-norbornene-2,3-dicarboxylic anhydride, 5-norbornene-2,3-dicarboxylic acid, 2,3-norbornanedicarboxylic acid, 2,3- norbornanedicarboxylic acid anhydride, and mixtures thereof.
In any of the above embodiments, the alicyclic diacid (d) comprises
hexahydrophthalic anhydride.
In any of the above embodiments, the acyclic aliphatic diacid (e) is selected from the group consisting of adipic acid, maleic anhydride, maleic acid, fumaric acid, itaconic anhydride, itaconic acid, citraconic anhydride, citraconic acid, dodecanedioic acid, sebacic acid, azelaic acid, and mixtures thereof.
In any of the above embodiments, the acyclic aliphatic diacid (e) comprises adipic acid.
In any of the above embodiments, the (a) comprises from 30 to 40 mole % 2,2,4,4-tetramethyl-1,3-cyclobutanediol and (b) comprises from 60 to 70 mole % of a diol selected from the group consisting of 2,2-dimethyl-1,3-propanediol, 1,2- cyclohexanedimethanol, 1,3-cyclohexanedimethanol, 1,4- cyclohexanedimethanol, 2,2,4-trimethyl-1,3-pentanediol, hydroxypivalyl hydroxypivalate, 2-methyl-1,3- propanediol, 2-butyl-2-ethyl-1,3-propanediol, 1,4-butanediol, 1,6-hexanediol and mixtures thereof, wherein the mole % is based on the total moles of (a) and (b).
In any of the above embodiments, the diacid residues comprises 60 to 70 mole % of the residues of at least one alicyclic diacid comprising an anhydride and 32 to 38 mole % residues of an acyclic alphatic diacid comprising adipic acid, succinic acid, glutaric acid and mixtures thereof.
In any of the above embodiments, comprising 20 to 30 mole % residues of (c), based on the total moles of the diols and polyol, (a), (b), and (c).
In any of the above embodiments, comprising from 62 to 67 mole % residues of (d), based on based on the total moles of the diacids (d) and (e).
In any of the above embodiments, the curable polyester has an acid number of less than 20 mgKOH/g of polyester.
In any of the above embodiments, the curable polyester has a hydroxyl number of 100 to 200 mgKOH/g of polyester and the acid number is from 5 to 15 mgKOH/g of polyester.
In any of the above embodiments, the solvent comprises less than 3 weight % water, based on the weight of the solution.
In any of the above embodiments, the solvent is selected from the group consisting of benzene, xylene, mineral spirits, naptha, toluene, acetone, methyl ethyl ketone, methyl n-amyl ketone, methyl isoamyl ketone, n-butyl acetate, isobutyl acetate, t-butyl acetate, n-propyl acetate, isopropyl acetate, ethyl acetate, methyl acetate, ethanol, n-propanol, isopropanol, n-butanol, sec-butanol, isobutanol, ethylene glycol monobutyl ether, propylene glycol n-butyl ether, propylene glycol methyl ether, propylene glycol monopropyl ether, dipropylene glycol methyl ether, diethylene glycol monobutyl ether, trimethylpentanediol mono-isobutyrate, ethylene glycol
mono-octyl ether, diacetone alcohol, 2,2,4-trimethyl-1,3-pentanediol
monoisobutyrate, Aromatic 100, Aromatic 150, and combinations thereof.
In any of the above embodiments, the solvent comprises xylene, methyl amyl ketone, n-butyl acetate, Aromatic 100, and/or Aromatic 150. GROUP 3
There is also provided a thermosetting monocoat coating composition comprising:
A. 50 to 90 weight percent, based on the total weight of (A) and (C), of at least one curable, aliphatic polyester, comprising residues of: i. hydroxyl component, said hydroxyl component comprising the residues of:
a. from 5 to 45 mole %, based on the total moles of (a) and (b), of 2,2,4,4-tetraalkylcyclobutane-1,3-diol (TACD);
b. from 55 to 95 mole % based on the total moles of (a) and (b), of a diol other than TACD; and
c. from 3 to 35 mole %, based on the total moles of (a), (b) and (c), of a polyol;
ii. a diacid component, said diacid component comprising the residues of:
d. from 60 to 90 mole %, based on the total moles of the diacids (d) and (e), of an alicyclic diacid; and
e. from 10 to 40 mole %, based on the total moles of the diacids (d) and (e), of an acyclic aliphatic diacid;
wherein the curable polyester contains diacid residues in an amount of at least 90 mole % of aliphatic diacid residues, based on the total moles of all diacid residues in the curable polyester, and, wherein the curable polyester has a hydroxyl number of 50 to 450 mgKOH/g of polyester, an acid number of 0 to 80 mgKOH/g, and a number average molecular weight of 300 to 10,000 g/mole of polyester; and
B. from 10 to 50 weight percent, based on the total weight of the coating composition, of a solvent other than water; and
C. from 10 to 50 weight percent, based on the total weight of (A) and (C), of a crosslinker comprising an aminoplast and/or isocyanate.
In the above embodiment, the diacid is essentially free of aromatic diacid residues.
In any of the above embodiments, the TACD comprises 2,2,4,4-tetramethyl-1,3- cyclobutanediol.
In any of the above embodiments, the diol (b) is selected from the group consisting of 2,2-dimethyl-1,3-propanediol (neopentyl glycol), 1,2- cyclohexanedimethanol, 1,3-cyclohexanedimethanol, 1,4-cyclohexanedimethanol, 2,2,4-trimethyl-1,3-pentanediol, hydroxypivalyl hydroxypivalate, 2-methyl-1,3- propanediol, 2-butyl-2-ethyl-1,3-propanediol, 1,4-butanediol, and 1,6-hexanediol, ethylene glycol, propylene glycol, diethylene glycol, dipropylene glycol, triethylene glycol, tetraethylene glycol, polyethylene glycol and mixtures thereof.
In any of the above embodiments, the diol (b) is selected from the group consisting of 2,2-dimethyl-1,3-propanediol (neopentyl glycol), 1,2- cyclohexanedimethanol, 1,3-cyclohexanedimethanol, 1,4- cyclohexanedimethanol, 2,2,4-trimethyl-1,3-pentanediol, hydroxypivalyl hydroxypivalate, 2-methyl-1,3- propanediol, 2-butyl-2-ethyl-1,3-propanediol, 1,4-butanediol, 1,6-hexanediol and mixtures thereof.
In any of the above embodiments, the diol (b) includes at least 15 mole % neopentyl glycol.
In any of the above embodiments, the molar ratio of (b):(a) is from 1.1:1 to 2.5:1.
In any of the above embodiments, the molar ratio of (b):(a) is from 1.5:1 to 2.0:1.
In any of the above embodiments, the molar ratio of (b):(a) is from 1.1:1 to 1.8:1.
In any of the above embodiments, the polyol (c) is one or more selected from the group consisting of 1,1,1-trimethylolpropane (TMP), 1,1,1-trimethylolethane, glycerin, and pentaerythritol.
In any of the above embodiments, the alicyclic diacid (d) is selected from the group consisting of hexahydrophthalic anhydride (HHPA), tetrahydrophthalic
anhydride, tetrachlorophthalic anhydride, 5-norbornene-2,3-dicarboxylic anhydride, 5-norbornene-2,3-dicarboxylic acid, 2,3-norbornanedicarboxylic acid, 2,3- norbornanedicarboxylic acid anhydride, and mixtures thereof.
In any of the above embodiments, the alicyclic diacid (d) comprises
hexahydrophthalic anhydride.
In any of the above embodiments, the acyclic aliphatic diacid (e) is selected from the group consisting of adipic acid, maleic anhydride, maleic acid, fumaric acid, itaconic anhydride, itaconic acid, citraconic anhydride, citraconic acid, dodecanedioic acid, sebacic acid, azelaic acid, and mixtures thereof.
In any of the above embodiments, the acyclic aliphatic diacid (e) comprises adipic acid.
In any of the above embodiments, the (a) comprises from 30 to 40 mole % 2,2,4,4-tetramethyl-1,3-cyclobutanediol and (b) comprises from 60 to 70 mole % of a diol selected from the group consisting of 2,2-dimethyl-1,3-propanediol, 1,2- cyclohexanedimethanol, 1,3-cyclohexanedimethanol, 1,4- cyclohexanedimethanol, 2,2,4-trimethyl-1,3-pentanediol, hydroxypivalyl hydroxypivalate, 2-methyl-1,3- propanediol, 2-butyl-2-ethyl-1,3-propanediol, 1,4-butanediol, 1,6-hexanediol and mixtures thereof, wherein the mole % is based on the total moles of (a) and (b).
In any of the above embodiments, the diacid residues comprise 60 to 70 mole % of the residues of at least one alicyclic diacid comprising an anhydride and 32 to 38 mole % residues of an acyclic alphatic diacid comprising adipic acid, succinic acid, glutaric acid and mixtures thereof.
In any of the above embodiments, 20 to 30 mole % residues of (c), based on the total moles of the diols and polyol, (a), (b), and (c).
In any of the above embodiments, the comprising from 62 to 67 mole % residues of (d), based on based on the total moles of the diacids (d) and (e).
In any of the above embodiments, the curable polyester has an acid number of less than 20 mgKOH/g of polyester.
In any of the above embodiments, the curable polyester has a hydroxyl number of 100 to 200 mgKOH/g of polyester and the acid number is from 5 to 15 mgKOH/g of polyester.
In any of the above embodiments, the comprising from 60 to 85 weight % of the
curable, aliphatic polyester (A) and from 15 to 40 wight %, of the crosslinker (C), wherein the weight % of (A) and (C) are based on the weight of the curable polyester (A) and the crosslinker (C).
In any of the above embodiments, the crosslinker (B) is an aminoplast selected from the group comprising hexamethoxymethylmelamine, tetramethoxymethylbenzo- guanamine, tetramethoxymethylurea, hexabutoxymethylmelamine, mixed
butoxy/methoxy methylmelamines and mixtures thereof.
In any of the above embodiments, the crosslinker (C) comprises
hexamethoxymethylmelamine.
In any of the above embodiments, the crosslinker (C) is selected from the group consisting of isocyanates and isocyanurates.
In any of the above embodiments, the crosslinker (C) is selected from the group consisting of toluene diisocyanate, isocyanurates of toluene diisocyanate,
diphenylmethane 4,4'-diisocyanate, isocyanurates of 4,4'-diisocyanate, methylenebis- 4,4'-isocyanatocyclohexane, isophorone diisocyanate, isocyanurates of isophorone diisocyanate, the biuret of 1,6-hexamethylene diisocyanate, 1,6-hexamethylene diisocyanate, isocyanurates of 1,6-hexamethylene diisocyanate, 1,4-cyclohexane diisocyanate, p-phenylene diisocyanate, and triphenylmethane 4,4',4"-triisocyanate, tetramethyl xylene diisocyanate, metaxylene diisocyanate, polyisocyanates, 1,4- butylene diisocyanate, methylene bis (4-cyclohexyl isocyanate), isophorone diisocyanate and isocyanate-terminated adducts of ethylene glycol, 1,4-butylene glycol, trimethylol propane, and mixtures thereof.
In any of the above embodiments, the coating has an NCO:OH ratio, on an equivalent basis, of 0.9:1.0 to 1.5:1.0.
In any of the above embodiments, further comprising a an additive or agent selectived from the group consisting of leveling, rheology and flow control agents, extenders, plasticizers, flatting agents, pigment wetting and dispersing agents, ultraviolet (UV) absorbers, UV light stabilizers, defoaming and antifoaming agents, anti-settling, anti-sag and bodying agents, anti-skinning agents, anti-flooding and anti- floating agents, corrosion inhibitors and mixtures thereof.
In any of the above embodiments, the solvent comprises less than 3 weight % water, based on the weight of the solution.
In any of the above embodiments, the solvent is selected from the group consisting of benzene, xylene, mineral spirits, naptha, toluene, acetone, methyl ethyl ketone, methyl n-amyl ketone, methyl isoamyl ketone, n-butyl acetate, isobutyl acetate, t-butyl acetate, n-propyl acetate, isopropyl acetate, ethyl acetate, methyl acetate, ethanol, n-propanol, isopropanol, n-butanol, sec-butanol, isobutanol, ethylene glycol monobutyl ether, propylene glycol n-butyl ether, propylene glycol methyl ether, propylene glycol monopropyl ether, dipropylene glycol methyl ether, diethylene glycol monobutyl ether, trimethylpentanediol mono-isobutyrate, ethylene glycol mono-octyl ether, diacetone alcohol, 2,2,4-trimethyl-1,3-pentanediol
monoisobutyrate, Aromatic 100, Aromatic 150, and combinations thereof.
In any of the above embodiments, the solvent comprises xylene, methyl amyl ketone, n-butyl acetate, Aromatic 100, and/or Aromatic 150.
In any of the above embodiments, further comprising applying said coating to a substrate and applying heat for a predetermined time and temperature to produce a cured coating, wherein the cured coating has an impact resistance of greater than 35 as determined in accordance with ASTM 4366.
In any of the above embodiments, the cured coating an impact resistance of from 36 to 200, as determined in accordance with ASTM 4366.
In any of the above embodiments, the cured coating has an impact resistance of from 50 to 200, as determined in accordance with ASTM 4366.
In any of the above embodiments, the cured coating has an impact resistance of from 60 to 200, as determined in accordance with ASTM 4366.
In any of the above embodiments, the cured coating has a gloss retention, based on ASTM D 6279, of greater than 50%.
In any of the above embodiments, the cured coating has a gloss retention, based on ASTM D 6279, of greater than 55%.
In any of the above embodiments, the cured coating has a gloss retention, based on ASTM D 6279, of greater than 60%.
In any of the above embodiments, the cured coating has a gloss retention, based on ASTM D 6279, of greater than 70%.
In any of the above embodiments, the cured coating has a gloss retention, based on SAE J2527, of greater than 85% after 1000 hours.
In any of the above embodiments, the cured coating has a gloss retention, based on SAE J2527, of greater than 85% after 1500 hours.
In any of the above embodiments, the cured coating has a gloss retention, based on SAE J2527, of greater than 85% after 2000 hours.
In any of the above embodiments, the cured coating has a gloss retention, based on SAE J2527, of greater than 85% after 2500 hours.
In any of the above embodiments, the cured coating has a gloss retention, based on SAE J2527, of greater than 85% after 3000 hours.
In any of the above embodiments, the cured coating has a gloss retention, based on SAE J2527, of greater than 85% after 3500 hours.
In any of the above embodiments, the cured coating has a gloss retention, based on SAE J2527, of greater than 85% after 4000 hours. GROUP 4
There is also provided a thermosetting monocoat coating composition to a substrate comprising:
I. providing a suitable substrate for coating;
II. providing a thermosetting monocoat coating composition comprising:
A. 50 to 90 weight percent, based on the total weight of (A) and (C), of at least one curable, aliphatic polyester, comprising residues of: i. hydroxyl component, said hydroxyl component comprising the residues of:
a. from 5 to 45 mole %, based on the total moles of (a) and (b), of 2,2,4,4-tetraalkylcyclobutane-1,3-diol (TACD); b. from 55 to 95 mole % based on the total moles of (a) and (b), of a diol other than TACD; and
c. from 3 to 35 mole %, based on the total moles of (a), (b) and (c), of a polyol;
ii. a diacid component, said diacid component comprising the residues of:
d. from 60 to 90 mole %, based on the total moles of the diacids (d) and (e), of an alicyclic diacid; and
e. from 10 to 40 mole %, based on the total moles of the diacids (d) and (e), of an acyclic aliphatic diacid;
wherein the curable polyester contains diacid residues in an amount of at least 90 mole % of aliphatic diacid residues, based on the total moles of all diacid residues in the curable polyester, and, wherein the curable polyester has a hydroxyl number of 50 to 450 mgKOH/g of polyester, an acid number of 0 to 80 mgKOH/g, and a number average molecular weight of 300 to 10,000 g/mole of polyester;
B. from 10 to 50 weight percent, based on the total weight of the coating composition, of a solvent other than water; and
C. from 10 to 50 weight percent, based on the total weight of (A) and (C), of a crosslinker comprising an aminoplast and/or isocyanate; III. applying said thermosetting monocoat coating composition to said substrate to produce a coated substrate; and
IV. applying heat to the coated substrate to a predetermined temperature and for a predetermined time to produce a cured coating.
In the above embodiment, the diacid is essentially free of aromatic diacid residues.
In any of the above embodiments, the TACD is 2,2,4,4-tetramethyl-1,3- cyclobutanediol.
In any of the above embodiments, the diol (b) is selected from the group consisting of 2,2-dimethyl-1,3-propanediol (neopentyl glycol), 1,2- cyclohexanedimethanol, 1,3-cyclohexanedimethanol, 1,4-cyclohexanedimethanol, 2,2,4-trimethyl-1,3-pentanediol, hydroxypivalyl hydroxypivalate, 2-methyl-1,3- propanediol, 2-butyl-2-ethyl-1,3-propanediol, 1,4-butanediol, and 1,6-hexanediol, ethylene glycol, propylene glycol, diethylene glycol, dipropylene glycol, triethylene glycol, tetraethylene glycol, polyethylene glycol and mixtures thereof.
In any of the above embodiments, the diol (b) is selected from the group consisting of 2,2-dimethyl-1,3-propanediol (neopentyl glycol), 1,2- cyclohexanedimethanol, 1,3-cyclohexanedimethanol, 1,4- cyclohexanedimethanol, 2,2,4-trimethyl-1,3-pentanediol, hydroxypivalyl hydroxypivalate, 2-methyl-1,3- propanediol, 2-butyl-2-ethyl-1,3-propanediol, 1,4-butanediol, 1,6-hexanediol and
mixtures thereof.
In any of the above embodiments, the diol (b) includes at least 15 mole % neopentyl glycol.
In any of the above embodiments, the molar ratio of (b):(a) is from 1.1:1 to 2.5:1.
In any of the above embodiments, the molar ratio of (b):(a) is from 1.5:1 to 2.0:1.
In any of the above embodiments, the molar ratio of (b):(a) is from 1.1:1 to 1.8:1.
In any of the above embodiments, the polyol (c) is one or more selected from the group consisting of 1,1,1-trimethylolpropane (TMP), 1,1,1-trimethylolethane, glycerin, and pentaerythritol.
In any of the above embodiments, the alicyclic diacid (d) is selected from the group consisting of hexahydrophthalic anhydride (HHPA), tetrahydrophthalic anhydride, tetrachlorophthalic anhydride, 5-norbornene-2,3-dicarboxylic anhydride, 5-norbornene-2,3-dicarboxylic acid, 2,3-norbornanedicarboxylic acid, 2,3- norbornanedicarboxylic acid anhydride, and mixtures thereof.
In any of the above embodiments, the alicyclic diacid (d) comprises
hexahydrophthalic anhydride.
In any of the above embodiments, the acyclic aliphatic diacid (e) is selected from the group consisting of adipic acid, maleic anhydride, maleic acid, fumaric acid, itaconic anhydride, itaconic acid, citraconic anhydride, citraconic acid, dodecanedioic acid, sebacic acid, azelaic acid, and mixtures thereof.
In any of the above embodiments, the acyclic aliphatic diacid (e) comprises adipic acid.
In any of the above embodiments, the (a) comprises from 30 to 40 mole % 2,2,4,4-tetramethyl-1,3-cyclobutanediol and (b) comprises from 60 to 70 mole % of a diol selected from the group consisting of 2,2-dimethyl-1,3-propanediol, 1,2- cyclohexanedimethanol, 1,3-cyclohexanedimethanol, 1,4- cyclohexanedimethanol, 2,2,4-trimethyl-1,3-pentanediol, hydroxypivalyl hydroxypivalate, 2-methyl-1,3- propanediol, 2-butyl-2-ethyl-1,3-propanediol, 1,4-butanediol, 1,6-hexanediol and mixtures thereof, wherein the mole % is based on the total moles of (a) and (b).
In any of the above embodiments, the diacid residues comprise 60 to 70 mole % of the residues of at least one alicyclic diacid comprising an anhydride and 32 to 38 mole % residues of an acyclic alphatic diacid comprising adipic acid, succinic acid, glutaric acid and mixtures thereof.
In any of the above embodiments, the monocoat coating composition comprises 20 to 30 mole % residues of (c), based on the total moles of the diols and polyol, (a), (b), and (c).
In any of the above embodiments, the monocoat coating composition comprises from 62 to 67 mole % residues of (d), based on based on the total moles of the diacids (d) and (e).
In any of the above embodiments, the polyester in said monocoat coating composition has an acid number of less than 20 mgKOH/g of polyester.
In any of the above embodiments, the polyester in said monocoat coating has a hydroxyl number of 100 to 200 mgKOH/g of polyester and the acid number is from 5 to 15 mgKOH/g of polyester.
In any of the above embodiments, the monocoat coating composition comprises from 60 to 85 weight % of the curable, aliphatic polyester (A) and from 15 to 40 wight %, of the crosslinker (C), wherein the weight % of (A) and (C) are based on the weight of the curable polyester (A) and the crosslinker (C).
In any of the above embodiments, the crosslinker (C) is an aminoplast selected from the group comprising hexamethoxymethylmelamine, tetramethoxymethylbenzo- guanamine, tetramethoxymethylurea, hexabutoxymethylmelamine, mixed
butoxy/methoxy methylmelamines and mixtures thereof.
In any of the above embodiments, the crosslinker (C) comprisies
hexamethoxymethylmelamine.
In any of the above embodiments, the crosslinker (C) is selected from the group consisting of isocyanates and isocyanurates.
In any of the above embodiments, the crosslinker (C) is selected from the group consisting of toluene diisocyanate, isocyanurates of toluene diisocyanate,
diphenylmethane 4,4'-diisocyanate, isocyanurates of 4,4'-diisocyanate, methylenebis- 4,4'-isocyanatocyclohexane, isophorone diisocyanate, isocyanurates of isophorone diisocyanate, the biuret of 1,6-hexamethylene diisocyanate, 1,6-hexamethylene
diisocyanate, isocyanurates of 1,6-hexamethylene diisocyanate, 1,4-cyclohexane diisocyanate, p-phenylene diisocyanate, and triphenylmethane 4,4',4"-triisocyanate, tetramethyl xylene diisocyanate, metaxylene diisocyanate, polyisocyanates, 1,4- butylene diisocyanate, methylene bis (4-cyclohexyl isocyanate), isophorone diisocyanate and isocyanate-terminated adducts of ethylene glycol, 1,4-butylene glycol, trimethylol propane, and mixtures thereof.
In any of the above embodiments, the monocoat coating composition has an NCO:OH ratio, on an equivalent basis, of 0.9:1.0 to 1.5:1.0.
In any of the above embodiments, the monocoat coating composition further comprises a an additive or agent selectived from the group consisting of leveling, rheology and flow control agents, extenders, plasticizers, flatting agents, pigment wetting and dispersing agents, ultraviolet (UV) absorbers, UV light stabilizers, defoaming and antifoaming agents, anti-settling, anti-sag and bodying agents, anti- skinning agents, anti-flooding and anti-floating agents, corrosion inhibitors and mixtures thereof.
In any of the above embodiments, the cured coating has an impact resistance of greater than 35 as determined in accordance with ASTM 4366.
In any of the above embodiments, the cured coating has an impact resistance of from 36 to 200, as determined in accordance with ASTM 4366.
In any of the above embodiments, the cured coating has an impact resistance of from 50 to 200, as determined in accordance with ASTM 4366.
In any of the above embodiments, the cured coating has an impact resistance of from 60 to 200, as determined in accordance with ASTM 4366.
In any of the above embodiments, the cured coating has a gloss retention, based on ASTM D 6279, of greater than 50%.
In any of the above embodiments, the cured coating has a gloss retention, based on ASTM D 6279, of greater than 55%.
In any of the above embodiments, the cured coating has a gloss retention, based on ASTM D 6279, of greater than 60%.
In any of the above embodiments, the cured coating has a gloss retention, based on ASTM D 6279, of greater than 70%.
In any of the above embodiments, the cured coating has a gloss retention, based
on SAE J2527, of greater than 85% after 1000 hours.
In any of the above embodiments, the cured coating has a gloss retention, based on SAE J2527, of greater than 85% after 1500 hours.
In any of the above embodiments, the cured coating has a gloss retention, based on SAE J2527, of greater than 85% after 2000 hours.
In any of the above embodiments, the cured coating has a gloss retention, based on SAE J2527, of greater than 85% after 2500 hours.
In any of the above embodiments, the cured coating has a gloss retention, based on SAE J2527, of greater than 85% after 3000 hours.
In any of the above embodiments, the cured coating has a gloss retention, based on SAE J2527, of greater than 85% after 3500 hours.
In any of the above embodiments, the cured coating has a gloss retention, based on SAE J2527, of greater than 85% after 4000 hours.
In any of the above embodiments, the substrate is selected from the group consisting of wood, metal and polymers.
In any of the above embodiments, the substrate is metal.
In any of the above embodiments, the metal substrate is at least one surface of an automobile.
In any of the above embodiments, the applying the thermosetting monocoat coating composition to the substrate step comprises brushing, spraying, and roll coating.
In any of the above embodiments, the coating is applied by spraying, wherein said spraying comprises rotational bell spraying.
In any of the above embodiments, the heating step comprises heating said coated substrate to a temperatue of from 35°C to 400°C for a period of from 5 seconds to 5 hours.
In any of the above embodiments, the heating step comprises heating said coated substrate to a temperatue of from 50°C to 200°C for a period of from 5 seconds to 5 hours.
In any of the above embodiments, the heating step comprises heating said coated substrate to a temperatue of from 60°C to 175°C for a period of from 5 seconds to 5 hours.
In any of the above embodiments, the heating step comprises heating said coated substrate to a temperature of from 80°C to 175°C for a period of from 5 seconds to 5 hours.
In any of the above embodiments, the period is from 10 minutes to 4 hours. In any of the above embodiments, the period is from 20 minutes to 3 hours. In any of the above embodiments, the period is from 30 minutes to 1 hour.
In any of the above embodiments, the solvent in said thermosetting monocoat coating comprises less than 3 weight % water, based on the weight of the solution.
In any of the above embodiments, the solvent in said thermosetting monocoat coating is selected from the group consisting of benzene, xylene, mineral spirits, naptha, toluene, acetone, methyl ethyl ketone, methyl n-amyl ketone, methyl isoamyl ketone, n-butyl acetate, isobutyl acetate, t-butyl acetate, n-propyl acetate, isopropyl acetate, ethyl acetate, methyl acetate, ethanol, n-propanol, isopropanol, n-butanol, sec-butanol, isobutanol, ethylene glycol monobutyl ether, propylene glycol n-butyl ether, propylene glycol methyl ether, propylene glycol monopropyl ether, dipropylene glycol methyl ether, diethylene glycol monobutyl ether, trimethylpentanediol mono- isobutyrate, ethylene glycol mono-octyl ether, diacetone alcohol, 2,2,4-trimethyl-1,3- pentanediol monoisobutyrate, Aromatic 100, Aromatic 150, and combinations thereof.
In any of the above embodiments, the solvent comprises xylene, methyl amyl ketone, n-butyl acetate, Aromatic 100, and/or Aromatic 150.
The invention is further illustrated by the following examples.
The present invention is illustrated in greater detail by the specific examples presented below. It is to be understood that these examples are illustrative
embodiments and are not intended to be limiting of the invention, but rather are to be construed broadly within the scope and content of the appended claims. All parts and percentages in the examples are on a weight basis unless otherwise stated. EXAMPLES
Preparation of Curable, Aliphatic Polyesters
The examples and comparative aliphatic polyester resins (Tables 1 and 2) were prepared according to the following procedure, calculation parameters included a number average molecular weight = 1000, a hydroxyl equivalent weight = 400, a
hydroxyl functionality = 2.5 and final acid number = 10. For example PE3, calculation parameters included a number average molecular weight = 1300, a hydroxyl equivalent weight = 400, a hydroxyl functionality = 3.25 and final acid number = 10. EXAMPLE PE1:
The resin was prepared using a solvent process to help remove the water of esterification. The resin was prepared in a two-liter reaction kettle equipped with a heating mantle, mechanical stirrer, thermocouple, nitrogen blanket (1.0 scfh), oil- heated partial condenser (103°C–105°C), condensate trap, and water-cooled total condenser (15°C). The condensate trap, kettle top and adapter from the kettle to the column were insulated by aluminum foil and fiberglass tape to facilitate water removal. A 0.25 wt. % excess of NPG and TMCD was added to the charge weight to compensate for glycol losses, and triphenylphosphite was added as a color stabilizer.
Stage 1 - HHPA, TMP, TMCD and excess triphenylphosphite and xylene were charged to the reactor. Additional xylene (approximately 30g) was used to fill the condensate trap. The temperature was then increased from room temperature to 75°C over fifty (50) minutes to form a homogenous melt. Agitation (300 rpm) was started and the temperature increased to a maximum of 165°C over sixty (60) minutes. The reaction was held at 165°C for 30 minutes, and no water was collected.
Stage 2 - NPG (and excess NPG), TMP, AD and catalyst were added to the reactor and heated to 230°C and held at this temperature until the final acid number, approximately 10 mg KOH/g resin, was achieved. The resin was cooled to 200°C and poured through a medium mesh paint filter into a metal paint can.
The acid number (abbreviated "AN"), hydroxyl number (abbreviated "OHN"), number average molecular weight (abbreviated "Mn"), weight average molecular weight (abbreviated“Mw), z-average molecular weight (abbreviated as“Mz”), molecular weight distribution polydispersity index (abbreviated“Mw/Mn”), and glass transition temperature (abbreviated "Tg") of the polyesters are shown in Table 2 below. Acid number was determined using ASTM method D 1639.
Hydroxyl number was determined by esterifying the resin by reaction with excess acetic anhydride in pyridine and then decomposing the unreacted anhydride
with water. The resulting acetic acid is then titrated with a standard solution of KOH. The number of milligrams KOH which are equivalent to one gram of resin sample is reported as the hydroxyl number.
Number average molecular weight was determined by gel permeation chromatography using a refractive index detector with polystyrene standards.
Residual solvent remaining in the resin from solvent processing could artificially lower the Tg measurement. To obtain a more accurate Tg, a resin sample was first subjected to preconditioning in an oven. 0.3g-0.5g of the resin was placed into a sample tin and heated to 150°C. The sample remained in the oven for 14-16 hours (overnight). The sample was then transferred to a differential scanning calorimeter (TA Instruments DSC Q2000 V24.9 Build 121). On the first heating cycle, the sample was heated under nitrogen atmosphere from -50°C to 140°C at a rate of 20°C/min. The sample was then quench cooled to -50°C. For the second heating cycle, the sample was heated under the same conditions as those used in the first heating cycle. The midpoint of the second heating cycle is reported as the Tg of the sample.
Melt viscosity (ASTM D 4287) was measured with a Brookfield CAP 2000 cone and plate viscometer using spindle 03 and 300 rpm at 100°C. The sample was heated on the plate for 60 seconds before determining viscosity. EXAMPLE PE2:
The resin was prepared using a solvent process to help remove the water of esterification. The resin was prepared in a two-liter reaction kettle equipped with a heating mantle, mechanical stirrer, thermocouple, nitrogen blanket (1.0 scfh), oil- heated partial condenser (103°C–105°C), condensate trap, and water-cooled total condenser (15°C). The condensate trap, kettle top and adapter from the kettle to the column were insulated by aluminum foil and fiberglass tape to facilitate water removal. A 0.25 wt. % excess of NPG and TMCD was added to the charge weight to compensate for glycol losses, and triphenylphosphite was added as a color stabilizer.
Stage 1 - HHPA, AD, TMCD (and excess TMCD), triphenylphosphite and xylene were charged to the reactor. The temperature was then increased from room temperature to 75°C over fifty (50) minutes to form a homogenous melt. Agitation
(300 rpm) was started and the temperature increased to a maximum of 165°C over sixty (60) minutes. The reaction was held at 165°C for 30 minutes. The temperature was increased to 210°C over 45 minutes and held until approximately 8 grams of water was collected.
Stage 2 - The reaction mixture was cooled to 170°C. NPG (and excess NPG), TMP and catalyst were charged to the reactor. The reaction mixture was then heated to 230°C over 120 minutes.
Stage 3 - The remaining TMP was added to the reaction when 85 grams of water was collected. The reaction temperature was held at 230°C until the final acid number was reaached. The resin was then cooled to 200°C and poured through a medium mesh paint filter into a metal paint can. EXAMPLE PE3:
The resin was prepared using a solvent process to help remove the water of esterification. The resin was prepared in a two-liter reaction kettle equipped with a heating mantle, mechanical stirrer, thermocouple, nitrogen blanket (1.0 scfh), oil- heated partial condenser (103°C–105°C), condensate trap, and water-cooled total condenser (15°C). The condensate trap, kettle top and adapter from the kettle to the column were insulated by aluminum foil and fiberglass tape to facilitate water removal. A 0.25 wt. % excess of NPG and TMCD was added to the charge weight to compensate for glycol losses, and triphenylphosphite was added as a color stabilizer.
Stage 1 - HHPA, AD, TMCD (and excess TMCD), triphenylphosphite and xylene were charged to the reactor. The temperature was then increased from room temperature to 75°C over fifty (50) minutes to form a homogenous melt. Agitation (300 rpm) was started and the temperature increased to a maximum of 170°C over sixty (60) minutes. The reaction was held at 170°C for 60 minutes. The temperature was increased to 220°C over 50 minutes and held until approximately 37 grams of water was collected.
Stage 2 - The reaction mixture was cooled to 170°C. NPG ( and excess NPG), TMP and catalyst were charged to the reactor. The reaction mixture was then heated to 230°C over 120 minutes. The reaction was held at 230°C until the final acid
number. The resin was then cooled to 200°C and poured through a medium mesh paint filter into a metal paint can. COMPARATIVE EXAMPLE 1 - CPE 1:
The resin was prepared using a solvent process to help remove the water of esterification. The resin was prepared in a two-liter reaction kettle equipped with a heating mantle, mechanical stirrer, thermocouple, nitrogen blanket (1.0 scfh), oil- heated partial condenser (103°C–105°C), condensate trap, and water-cooled total condenser (15°C). The condensate trap, kettle top and adapter from the kettle to the column were insulated by aluminum foil and fiberglass tape to facilitate water removal. A 0.25 wt. % excess of NPG and TMCD was added to the charge weight to compensate for glycol losses, and triphenylphosphite was added as a color stabilizer.
Stage 1 - HHPA, AD, TMCD (and excess TMCD), triphenylphosphite and xylene were charged to the reactor. The temperature was then increased from room temperature to 75°C over fifty (50) minutes to form a homogenous melt. Agitation (300 rpm) was started and the temperature increased to a maximum of 165°C over sixty (60) minutes. The reaction was held at 165°C for 30 minutes. The temperature was increased to 210°C over 45 minutes and held until approximately 24 grams of water was collected.
Stage 2 - The reaction mixture was cooled to 170°C. NPG (and excess NPG), TMP and catalyst were charged to the reactor. The reaction mixture was then heated to 230°C over 120 minutes.
Stage 3 - The remaining TMP was added to the reaction when 74 grams of water was collected. The reaction temperature was held at 230°C until the final acid number was reaached. The resin was then cooled to 200°C and poured through a medium mesh paint filter into a metal paint can. COMPARATIVE EXAMPLE 2 - CPE 2:
The resin was prepared using a solvent process to help remove the water of esterification. The resin was prepared in a two-liter reaction kettle equipped with a heating mantle, mechanical stirrer, thermocouple, nitrogen blanket (1.0 scfh), oil-
heated partial condenser (103°C–105°C), condensate trap, and water-cooled total condenser (15°C). The condensate trap, kettle top and adapter from the kettle to the column were insulated by aluminum foil and fiberglass tape to facilitate water removal. A 0.25 wt. % excess of NPG and TMCD was added to the charge weight to compensate for glycol losses, and triphenylphosphite was added as a color stabilizer.
Stage 1 - HHPA, TMP, TMCD (and excess TMCD), triphenylphosphite and xylene were charged to the reactor. The temperature was then increased from room temperature to 75°C over fifty (50) minutes to form a homogenous melt. Agitation (300 rpm) was started and the temperature increased to a maximum of 165°C over sixty (60) minutes. The reaction was held at 165°C for 30 minutes, and no water was collected.
Stage 2– NPG (and excess NPG), TMP, AD and catalyst were added to the reactor and heated to 230°C over 120 minutes. The reaction was held at 230°C until the final acid number was achieved. The resin was cooled to 200°C and poured through a medium mesh paint filter into a metal paint can. Table 1
Molar Com osition of Pol mer Resins
Polyester Resin Charge Weights (Grams) and Determined Resin Pro erties
(a)Add 0.25 wt. % glycol excess based on calculated charge weights (b)2,2,4,4-tetramethyl-1,3-cyclobutanediol (Eastman) (c)Trimethylolpropane (Perstorp)
(d)Hexahydrophthalic anhydride (Dixie Chemical) (e)Adipic acid (Ascend Performance Materials)
(f)2,2-Dimethyl-1,3-propanediol (Eastman)
(g)Butylstannoic acid (PMC Organometallix)
Thermosetting Monocoat Preparation And Evaluation
Prepartion of white monocoats:
White pigmented thermosetting monocoats were prepared by mixing the ingredients listed in Table 3. The polyester samples prepared in table 2 were pre- dissolevd into butylaetate to form 75% solid solutions. Mill base portion were added to a stainless steel pot in listed order and pre-dispersed usign a cowles blade at 2000 rpm for 20 mintes. The mixture was then pulled into a Mini Motor Mill 250 from Eiger Machinery Inc. The mill base was ground at 4000 rpm to 7+ on a Hegman gage. Then the mill base was pulled out. The mill was washed with pre-mixed “Wash mill“ portion. The let down portion was pre-mixed in a container and added to a grinding paste and agitated to form uniformed monocoat. The viscosity of the white monocoats was adjusted with aromatic 100 to 30 second measured using a #4 Ford cup.
Table 3
Thermosetting Monocoat Formulation
A wire wound rod was used to apply the coating to polished cold rolled steel test panels with elecrodeposit coat and topcoated with a gray primer. Panels were purchased from ACT Test Panels LLC and the steel thickness is 0.032 inch. The rod was selected to achieve a 40 microns dry film thickness. Coated panels were flashed 10 minutes at room temperature and then cured at 140°C for 30 minutes.
Hardness was determined using two methods: a BYK-Gardner pendulum
hardness tester (ASTM D 4366); and pencil test (ASTM D 3363). For pencil hardness, the value reported was the last pencil that did not cut through the coating to the metal substrate. Flexibility of the monocoats were tested uing both Conical mandrel bending and impact tester. The TQC Bend Tester from Gardner was used for Conical mandrel bending. Test was done as per ASTM D522. Impact resistance was measured with a Gardco Model 172 universal impact tester (ASTM D 2794). The indenter punch used was IM-172-2 with additional auxilary 2 pound weight, the diameter being 0.64 of an inch (1.63 centimeters). The values reported are the last impact that did not produce any cracks in the coating film or delamination of the coating from the substrate. Abrasion resistance was tested using an AATCC
Crockmeter; Model CM-5 as per ASTM D 6279; load 10 N, paper was 9 micron 3M paper; rubs: diameter of disc was 16 millimeters, stroke length was 10 centimeters; the 20 degree gloss retention was determined by averaging two testing results.
Outdoor durability of the monocoats was determined using a Xenon Weatherometer following SAE J2527 testing procedure. Tables 4 and 5 shows the evaluation results of the monocoats.
Table 4
Key requ rements or t e monocoat are: Pass Con ca man re test ng; mpact resistance > 35 Ib.in; Pencil hardness > =HB; Gloss retention after Crock meter > = 50%; and 20 degree gloss retention after 2500 hours of Xenon is > = 85%.
Table 5
Xenon Arc Accelarated Weathering Gloss And Gloss Retention
Having described the invention in detail, those skilled in the art will appreciate that modifications may be made to the various aspects of the invention without departing from the scope and spirit of the invention disclosed and described herein. It is, therefore, not intended that the scope of the invention be limited to the specific embodiments illustrated and described but rather it is intended that the scope of the present invention be determined by the appended claims and their equivalents.
Moreover, all patents, patent applications, publications, and literature references presented herein are incorporated by reference in their entirety for any disclosure pertinent to the practice of this invention.
Claims
1. A curable, aliphatic polyester comprising residues of:
i. a hydroxyl component, said hydroxyl component comprising the residues of:
a. from 5 to 45 mole %, based on the total moles of (a) and (b), of 2,2,4,4-tetraalkylcyclobutane-1,3-diol (TACD);
b. from 55 to 95 mole % based on the total moles of (a) and (b), of a diol other than TACD; and
c. from 3 to 35 mole %, based on the total moles of (a), (b) and (c), of a polyol;
ii. a diacid component, said diacid component comprising the residues of: d. from 60 to 90 mole %, based on the total moles of the diacids of an alicyclic diacid; and
e. from 10 to 40 mole %, based on the total moles of the diacids an acyclic aliphatic diacid;
wherein the curable polyester contains diacid residues in an amount of at least 90 mole % of aliphatic diacid residues, based on the total moles of all diacid residues in the curable polyester, and, wherein the curable polyester has a hydroxyl number of 50 to 450 mgKOH/g of polyester, an acid number of 0 to 80 mgKOH/g, and a number average molecular weight of 300 to 10,000 g/mole of polyester.
2. The curable, aliphatic polyester of claim 1, wherein said diacid is essentially free of aromatic diacid residues.
3. The curable polyester of claim 1, wherein TACD comprises 2,2,4,4-tetramethyl- 1,3-cyclobutanediol.
4. The curable polyester of claim 1, wherein the diol (b) is selected from the group consisting of 2,2-dimethyl-1,3-propanediol (neopentyl glycol), 1,2- cyclohexanedimethanol, 1,3-cyclohexanedimethanol, 1,4-
cyclohexanedimethanol, 2,2,4-trimethyl-1,3-pentanediol, hydroxypivalyl hydroxypivalate, 2-methyl-1,3-propanediol, 2-butyl-2-ethyl-1,3-propanediol, 1,4-butanediol, 1,6-hexanediol and mixtures thereof.
5. The curable polyester of claim 4, wherein at least 15 mole % of the diol (b) residues is neopentyl glycol based on the total moles of diol (b).
6. The curable polyester of claim 1, wherein the molar ratio of (b):(a) is from 1.5:1 to 2.0:1.
7. The curable polyester of claim 1, wherein the polyol (c) is one or more selected from the group consisting of 1,1,1-trimethylolpropane (TMP), 1,1,1- trimethylolethane, glycerin, and pentaerythritol.
8. The curable polyester of claim 1, wherein the alicyclic diacid (d) is selected from the group consisting of hexahydrophthalic anhydride (HHPA),
tetrahydrophthalic anhydride, tetrachlorophthalic anhydride, 5-norbornene-2,3- dicarboxylic anhydride, 5-norbornene-2,3-dicarboxylic acid, 2,3- norbornanedicarboxylic acid, 2,3-norbornanedicarboxylic acid anhydride, and mixtures thereof.
9. The curable polyester of claim 1, wherein the acyclic aliphatic diacid (e) is
selected from the group consisting of adipic acid, maleic anhydride, maleic acid, fumaric acid, itaconic anhydride, succinic acid, succinic anhydride, glutaric acid, itaconic acid, citraconic anhydride, citraconic acid, dodecanedioic acid, sebacic acid, azelaic acid, and mixtures thereof.
10. The curable polyester of claim 1, wherein (a) comprises from 30 to 40 mole % 2,2,4,4-tetramethyl-1,3-cyclobutanediol and (b) comprises from 60 to 70 mole % of a diol selected from the group consisting of 2,2-dimethyl-1,3-propanediol, 1,2-cyclohexanedimethanol, 1,3-cyclohexanedimethanol, 1,4- cyclohexanedimethanol, 2,2,4-trimethyl-1,3-pentanediol, hydroxypivalyl
hydroxypivalate, 2-methyl-1,3-propanediol, 2-butyl-2-ethyl-1,3-propanediol, 1,4-butanediol, 1,6-hexanediol and mixtures thereof, wherein the mole % is based on the total moles of (a) and (b).
11. The curable polyester of claim 1, wherein the diacid component comprise 60 to 70 mole % of the residues of at least one alicyclic diacid comprising an anhydride and 32 to 38 mole % residues of an acyclic alphatic diacid comprising adipic acid, succinic anhydride,succinic acid, glutaric acid and mixtures thereof, and, wherein the curable polyester is obtained with no or less than 3 mole% acids having a carboxylic acid functionality of greater than 2 based on the total moles of all carboxylic acid compound residues.
12. The curable polyester of claim 1 comprising 20 to 30 mole % residues of (c), based on the total moles of the diols and polyol, (a), (b), and (c).
13. The curable polyester of claim 1 comprising from 62 to 67 mole % residues of (d), based on based on the total moles of the diacids (d) and (e).
14. A thermosetting coating solution comprising:
A. 50 to 90 weight percent, based on the total weight of (A) and (B) of at least one curable, aliphatic polyester, comprising residues of: i. hydroxyl component, said hydroxyl component comprising the residues of:
a. from 5 to 45 mole %, based on the total moles of (a) and (b), of 2,2,4,4-tetraalkylcyclobutane-1,3-diol (TACD); b. from 55 to 95 mole % based on the total moles of (a) and (b), of a diol other than TACD; and
c. from 3 to 35 mole %, based on the total moles of (a), (b) and (c), of a polyol;
ii. a diacid component, said diacid component comprising the residues of:
d. from 60 to 90 mole %, based on the total moles of the diacids
(d) and (e), of an alicyclic diacid; and
e. from 10 to 40 mole %, based on the total moles of the diacids (d) and (e), of an acyclic aliphatic diacid;
wherein the curable polyester contains diacid residues in an amount of at least 90 mole % of aliphatic diacid residues, based on the total moles of all diacid residues in the curable polyester, and, wherein the curable polyester has a hydroxyl number of 50 to 450 mgKOH/g of polyester, an acid number of 0 to 80 mgKOH/g, and a number average molecular weight of 300 to 10,000 g/mole of polyester; and
B. from 10 to 50 weight percent, based on the total weight of the solution, of a solvent other than water.
15. The thermosetting coating solution of claim 14, wherein said solvent comprises xylene, methyl amyl ketone, n-butyl acetate, Aromatic 100, and/or Aromatic 150.
16. A thermosetting monocoat coating composition comprising:
A. 50 to 90 weight percent, based on the total weight of (A) and (C), of at least one curable, aliphatic polyester, comprising residues of: i. hydroxyl component, said hydroxyl component comprising the residues of:
a. from 5 to 45 mole %, based on the total moles of (a) and (b), of 2,2,4,4-tetraalkylcyclobutane-1,3-diol (TACD);
b. from 55 to 95 mole % based on the total moles of (a) and (b), of a diol other than TACD; and
c. from 3 to 35 mole %, based on the total moles of (a), (b) and (c), of a polyol;
ii. a diacid component, said diacid component comprising the residues of:
d. from 60 to 90 mole %, based on the total moles of the diacids (d) and (e), of an alicyclic diacid; and
e. from 10 to 40 mole %, based on the total moles of the diacids
(d) and (e), of an acyclic aliphatic diacid;
wherein the curable polyester contains diacid residues in an amount of at least 90 mole % of aliphatic diacid residues, based on the total moles of all diacid residues in the curable polyester, and, wherein the curable polyester has a hydroxyl number of 50 to 450 mgKOH/g of polyester, an acid number of 0 to 80 mgKOH/g, and a number average molecular weight of 300 to 10,000 g/mole of polyester; and
B. from 10 to 50 weight percent, based on the total weight of the coating composition, of a solvent other than water; and
C. from 10 to 50 weight percent, based on the total weight of (A) and (C), of a crosslinker comprising an aminoplast and/or isocyanate.
17. The thermosetting monocoat coating composition of claim 16, wherein the crosslinker (B) is an aminoplast selected from the group comprising
hexamethoxymethylmelamine, tetramethoxymethylbenzo-guanamine, tetramethoxymethylurea, hexabutoxymethylmelamine, mixed butoxy/methoxy methylmelamines and mixtures thereof.
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CN201680028703.2A CN107531889B (en) | 2015-05-19 | 2016-05-16 | Aliphatic polyester coating compositions containing tetramethyl cyclobutanediol |
EP16797072.2A EP3298063A4 (en) | 2015-05-19 | 2016-05-16 | Aliphatic polyester coating compositions containing tetramethyl cyclobutanediol |
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US14/716,027 US20160340471A1 (en) | 2015-05-19 | 2015-05-19 | Aliphatic polyester coating compositions containing tetramethyl cyclobutanediol |
US14/716,027 | 2015-05-19 |
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EP (1) | EP3298063A4 (en) |
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3760658A1 (en) | 2019-07-03 | 2021-01-06 | Covestro Deutschland AG | Resistant 2k-pur coatings |
WO2022115268A1 (en) * | 2020-11-30 | 2022-06-02 | Eastman Chemical Company | Stretchable multilayer films |
EP3864100A4 (en) * | 2018-10-11 | 2022-08-10 | Eastman Chemical Company | Thermosetting coating composition with improved scratch resistance |
EP3864089A4 (en) * | 2018-10-11 | 2022-08-10 | Eastman Chemical Company | Coatings with improved scratch resistance |
EP3864088A4 (en) * | 2018-10-11 | 2022-08-31 | Eastman Chemical Company | Scratch resistant thermosetting coating compositions |
WO2024026334A1 (en) * | 2022-07-27 | 2024-02-01 | Eastman Chemical Company | Thermosetting powder coating compositions |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20160340471A1 (en) | 2015-05-19 | 2016-11-24 | Eastman Chemical Company | Aliphatic polyester coating compositions containing tetramethyl cyclobutanediol |
US20170088665A1 (en) | 2015-09-25 | 2017-03-30 | Eastman Chemical Company | POLYMERS CONTAINING CYCLOBUTANEDIOL AND 2,2 BIS(HYDROXYMETHYL) AlKYLCARBOXYLIC ACID |
US9988553B2 (en) | 2016-02-22 | 2018-06-05 | Eastman Chemical Company | Thermosetting coating compositions |
EP3615622A4 (en) * | 2017-04-25 | 2020-12-16 | Basf Se | Coating compositions having covalently bound ultraviolet absorbers |
CN108774444A (en) * | 2018-06-25 | 2018-11-09 | 阜南县创发工艺品有限公司 | A kind of woodwork modified polyacrylate coating |
CN109054003B (en) * | 2018-08-23 | 2020-09-08 | 擎天材料科技有限公司 | Polyester resin for TGIC curing extinction powder coating and preparation method thereof |
WO2020114489A1 (en) * | 2018-12-06 | 2020-06-11 | Eastman Chemical (China) Co., Ltd. | Adhesive compositions with polyesters comprising 2, 2, 4, 4-tetraalkyl-1, 3-cyclobutanediol |
EP4004082A4 (en) * | 2019-07-31 | 2023-05-31 | Eastman Chemical (China) Co., Ltd. | Polyester articles having an improved hard-coat |
WO2024081538A1 (en) * | 2022-10-11 | 2024-04-18 | Eastman Chemical Company | Polyester polyols having improved performance properties |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5393840A (en) * | 1993-11-01 | 1995-02-28 | Eastman Chemical Company | Thermosetting coating compositions |
US20130296488A1 (en) * | 2009-02-06 | 2013-11-07 | Eastman Chemical Company | Thermosetting polyester coating compositions containing tetramethyl cyclobutanediol |
US20140296407A1 (en) * | 2009-02-06 | 2014-10-02 | Eastman Chemical Company | Aliphatic polyester coating compositions containing tetramethyl cyclobutanediol |
US20150099837A1 (en) * | 2012-05-09 | 2015-04-09 | Dow Global Technologies Llc | Polyester Composition and Method of Producing the Same |
Family Cites Families (189)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA740050A (en) | 1966-08-02 | R. Caldwell John | Tin catalysts in the preparation of 2,2,4,4-tetraalkyl-1,3-cyclobutane-diol polyesters | |
US3018272A (en) | 1955-06-30 | 1962-01-23 | Du Pont | Sulfonate containing polyesters dyeable with basic dyes |
US3033822A (en) | 1959-06-29 | 1962-05-08 | Eastman Kodak Co | Linear polyesters of 1, 4-cyclohexane-dimethanol and hydroxycarboxylic acids |
US2891930A (en) | 1957-03-25 | 1959-06-23 | Eastman Kodak Co | Fiber-forming polyesters from trans-1, 4-cyclohexanedicarboxylic compounds and 1, 1-cyclohexane dimethanol |
US3075952A (en) | 1959-01-21 | 1963-01-29 | Eastman Kodak Co | Solid phase process for linear superpolyesters |
US3313777A (en) | 1959-12-18 | 1967-04-11 | Eastman Kodak Co | Linear polyesters and polyester-amides from 2, 2, 4, 4-tetraalkyl-1, 3-cyclobutanediols |
FR83790E (en) | 1959-12-18 | 1964-10-09 | Kodak Pathe | New polymers derived from 2, 2, 4, 4-tetraalkyl-1, 3-cyclobutanediols and their industrial applications |
US3108083A (en) | 1960-10-03 | 1963-10-22 | Schenectady Chemical | Composition comprising polyester phenol formaldehyde resin and aldehyde condensate of urea melamine or acetone and metal surface coated therewith |
BE615850Q (en) | 1960-12-16 | 1962-07-16 | Eastman Kodak Co | New polymers derived from 2,2,4,4-tetraalkyl-1,3-cyclobutanediols and their industrial applications |
US3227764A (en) | 1960-12-30 | 1966-01-04 | Eastman Kodak Co | Separation of cis and trans isomers of tetraalkyl - 1,3 - cyclobutanediols and novel compound obtained thereby |
US3216884A (en) | 1962-05-14 | 1965-11-09 | Hooker Chemical Corp | Polyester/phenol-aldehyde resin emulsion molding composition and laminated articles |
US3345313A (en) | 1963-02-20 | 1967-10-03 | Trojan Powder Co | Alkyd resins and their preparation from reaction mixtures comprising a polymethylolalkanoic acid |
US3312645A (en) | 1964-04-10 | 1967-04-04 | George Co P D | Oil-modified polyester reaction products and oil-modified, phenol-aldehyde resin modified reaction products |
DE1447978A1 (en) | 1964-10-27 | 1968-11-07 | Union Carbide Corp | Positive working planographic printing plates |
FR1456345A (en) | 1964-12-07 | 1966-10-21 | Eastman Kodak Co | New process for the preparation of polyesters and new products obtained |
US3484339A (en) | 1966-05-02 | 1969-12-16 | Eastman Kodak Co | Blends of polyesters containing free carboxyl groups and laminate thereof |
US3502620A (en) | 1967-05-11 | 1970-03-24 | Eastman Kodak Co | Branched polyesters containing terminal carboxyl groups |
US3528947A (en) | 1968-01-03 | 1970-09-15 | Eastman Kodak Co | Dyeable polyesters containing units of an alkali metal salts of an aromatic sulfonic acid or ester thereof |
US3538187A (en) | 1969-03-04 | 1970-11-03 | Atlas Chem Ind | Polyester resin from a mixture of dihydric alcohols |
US3779993A (en) | 1970-02-27 | 1973-12-18 | Eastman Kodak Co | Polyesters and polyesteramides containing ether groups and sulfonate groups in the form of a metallic salt |
US3734874A (en) | 1970-02-27 | 1973-05-22 | Eastman Kodak Co | Polyesters and polyesteramides containing ether groups and sulfonate groups in the form of a metallic salt |
US3789044A (en) | 1971-01-26 | 1974-01-29 | Ashland Oil Inc | Novel cured compositions prepared from the reaction of a polyisocyanate and a hydroxybenzoic acid capped epoxide-containing material |
US3772227A (en) | 1971-05-13 | 1973-11-13 | Ppg Industries Inc | Electrodepositable polyester compositions containing a methylol phenol ether |
BE786278A (en) | 1971-07-14 | 1973-01-15 | Hooker Chemical Corp | PHENOL-BASED INSATURATED POLYESTER RESINS AND THEIR PREPARATION PROCESS |
US3856830A (en) | 1971-12-23 | 1974-12-24 | Atlas Chem Ind | Polymerizable urethane compounds |
US4054681A (en) | 1973-09-15 | 1977-10-18 | Dynamit Nobel Aktiengesellschaft | Coating powders on the basis of thermoplastic polyesters |
US4076766A (en) | 1975-03-27 | 1978-02-28 | E. I. Du Pont De Nemours And Company | Flexible thermosetting acrylic enamels |
CA1107891A (en) | 1976-01-09 | 1981-08-25 | Harry M. Culbertson | High ortho etherified resole resins |
US4119680A (en) | 1976-08-23 | 1978-10-10 | Eastman Kodak Company | Copolyesters as improved binders and finishes for polyester-containing fabrics |
US4074061A (en) | 1976-10-26 | 1978-02-14 | Eastman Kodak Company | Unsaturated polyester containing formal linkages |
US4322508A (en) | 1978-03-20 | 1982-03-30 | Ford Motor Company | High solids paint composition comprising hydroxy functional oligoesters and hydroxy functional copolymers |
GB2025998B (en) | 1978-06-29 | 1982-10-20 | Monsanto Co | High ortho etherified resole resin coating compositions |
US4264671A (en) | 1978-08-02 | 1981-04-28 | Weyerhaeuser Company | Phenol formaldehyde resoles and laminates |
US4196109A (en) | 1978-08-17 | 1980-04-01 | Schenectady Chemicals, Inc. | Phenolic resin-triazine modifier for alkyd resins |
US4267279A (en) | 1979-07-27 | 1981-05-12 | Koppers Company, Inc. | Polyester composition stabilized against gel-time drift with amine salt and method for making same |
US4304901A (en) | 1980-04-28 | 1981-12-08 | Eastman Kodak Company | Water dissipatable polyesters |
US4299933A (en) | 1980-06-02 | 1981-11-10 | Eastman Kodak Company | Polyester adhesives |
US4581093A (en) | 1980-12-15 | 1986-04-08 | Whittaker Corporation | Branched polyester adhesive compositions and method employing same |
US4350807A (en) | 1981-02-09 | 1982-09-21 | Eastman Kodak Company | Copolyester compositions |
US4338379A (en) | 1981-02-13 | 1982-07-06 | E. I. Du Pont De Nemours And Company | High-solids thermosetting enamel coating composition |
US4363908A (en) | 1981-08-31 | 1982-12-14 | Eastman Kodak Company | Polyester modified with alkyl- or alkenylsuccinic anhydrides |
US4433119A (en) | 1982-01-19 | 1984-02-21 | Union Carbide Corporation | Liquid thermosetting compositions containing hemiformals of phenol |
US4397989A (en) | 1982-02-08 | 1983-08-09 | E. I. Du Pont De Nemours & Co. | High solids coating composition of an acrylic polymer a polyester polyol and an alkylated melamine crosslinking agent |
US4525544A (en) | 1982-04-12 | 1985-06-25 | The Dow Chemical Company | Vinyl ester resin composition |
US4480077A (en) | 1982-10-12 | 1984-10-30 | Dow Chemical Co | Heat resistant vinyl ester resin composition |
DE3247756A1 (en) | 1982-12-23 | 1984-06-28 | Herberts Gmbh, 5600 Wuppertal | AQUEOUS COATING AGENT |
US5023367A (en) | 1982-12-27 | 1991-06-11 | King Industries, Inc. | Linear, low-molecular-weight polyester-based polyol |
US4525504A (en) | 1983-10-24 | 1985-06-25 | Eastman Kodak Company | Stabilized polyester compositions suitable for outdoor applications |
US4585854A (en) | 1984-04-16 | 1986-04-29 | The Goodyear Tire & Rubber Company | Polyester composition |
US4724173A (en) | 1986-01-29 | 1988-02-09 | The Board Of Governors For Higher Education, State Of Rhode Island | Method of preventing gel coat blistering in fiber glass reinforced polymers |
US4716200A (en) | 1986-03-06 | 1987-12-29 | The Glidden Company | Acrylic polyester high solids coatings |
US4751267A (en) | 1986-03-06 | 1988-06-14 | The Glidden Company | Acrylic polyester high solids coatings |
US4737551A (en) | 1986-06-23 | 1988-04-12 | E. I. Dupont De Nemours And Company | Coating composition of a hydroxy group-containing modified polyester with polymerized lactone monomers |
US4698391A (en) | 1986-07-30 | 1987-10-06 | Eastman Kodak Company | Crosslinked polymers with lowered resistivity and materials and methods for their preparation |
US4771101A (en) | 1987-06-22 | 1988-09-13 | Eastman Kodak Company | Unsaturated polyesters colored with lignin |
US4859760A (en) | 1987-12-07 | 1989-08-22 | Eastman Kodak Company | Polyurethane powder coating compositions |
FR2635716B1 (en) | 1988-08-24 | 1990-11-02 | Beneteau Sa Chantiers | METHOD OF PROTECTING AGAINST WATER OF A LAMINATED RESIN WALL AND WALL OF PROTECTED LAMINATED RESIN THUS OBTAINED |
US4910292A (en) | 1988-10-14 | 1990-03-20 | Eastman Kodak Company | Water-dissipatable polyester resins and coatings prepared therefrom |
US4939233A (en) | 1988-12-05 | 1990-07-03 | Eastman Kodak Company | Aqueous polymer compositions and methods for their preparation |
JPH0338281A (en) | 1989-07-04 | 1991-02-19 | Nippon Steel Metal Prod Co Ltd | Preparation of precoated metal plate |
US5017679A (en) | 1989-08-30 | 1991-05-21 | Eastman Kodak Company | Polyesters terminated with carboxycyclohexanecarboxylate groups |
US6184311B1 (en) | 1990-03-26 | 2001-02-06 | Courtaulds Coatings (Holdings) Limited | Powder coating composition of semi-crystalline polyester and curing agent |
US5124388A (en) | 1990-05-07 | 1992-06-23 | Eastman Kodak Company | Films and containers of heat resistant copolyesters |
CA2039832A1 (en) | 1990-05-21 | 1991-11-22 | Herbert L. Curry | High melt viscosity filled polyester composition |
DE4024204A1 (en) | 1990-07-31 | 1992-02-06 | Basf Lacke & Farben | COATING AGENTS BASED ON HYDROXYL GROUPS OF POLYCONDENSATION AND POLYADDITION PRODUCTS AND THEIR USE |
US5025086A (en) | 1990-11-13 | 1991-06-18 | Eastman Kodak Company | Trifunctional monomer compounds, polyesters derived therefrom and thermosetting coating compositions containing the polyesters |
US5097006A (en) | 1990-11-21 | 1992-03-17 | U C B S.A. | Weatherable powder coating compositions |
US5160792A (en) | 1991-02-04 | 1992-11-03 | Eastman Kodak Company | Thermosetting powder coating compositions |
US5254637A (en) | 1991-06-03 | 1993-10-19 | Eastman Kodak Company | Thermosetting coating compositions |
US5245002A (en) | 1991-06-10 | 1993-09-14 | Eastman Kodak Company | Thermosetting coating compositions |
US5256759A (en) | 1991-06-10 | 1993-10-26 | Eastman Kodak Company | Thermosetting coating compositions |
WO1993002114A1 (en) | 1991-07-18 | 1993-02-04 | General Electric Company | Stabilization of polyesters using epoxy compounds in combination with a catalyst |
US5256761A (en) | 1991-09-23 | 1993-10-26 | Eastman Kodak Company | Polyester coatings containing covalently-bound mesogenic monomers |
US5218042A (en) | 1991-09-25 | 1993-06-08 | Thauming Kuo | Water-dispersible polyester resins and process for their preparation |
FR2682956B1 (en) | 1991-10-29 | 1994-01-07 | Rhone Poulenc Chimie | PROCESS FOR THE PREPARATION OF WATER-SOLUBLE AND / OR HYDRODISPERSABLE POLYESTERS AND USE OF SUCH POLYESTERS FOR SIZING TEXTILE THREADS. |
ES2110483T3 (en) | 1992-03-16 | 1998-02-16 | Ucb Sa | CYCLOALIFATIC POLYESTERS CONTAINING TERMINAL CARBOXYL GROUPS FOR THE PREPARATION OF POWDER PAINTS. |
ATE154380T1 (en) | 1992-07-06 | 1997-06-15 | Eastman Chem Co | HEAT CURING POWDER COATING COMPOSITIONS |
CZ138993A3 (en) | 1992-07-15 | 1994-02-16 | Herberts & Co Gmbh | Aqueous, thermosetting coating composition, process of its preparation and use |
US5349026A (en) | 1992-11-20 | 1994-09-20 | Rohm And Haas Company | Reactive coalescents |
US5350830A (en) | 1992-11-27 | 1994-09-27 | Eastman Chemical Company | Thermosetting coating compositions |
DE4244030A1 (en) | 1992-12-24 | 1994-06-30 | Bayer Ag | Amine-containing polyester resins |
US5344872A (en) | 1993-02-19 | 1994-09-06 | Eastman Chemical Company | Ink compositions containing certain methacrylates |
US5288820A (en) | 1993-03-01 | 1994-02-22 | Eastman Kodak Company | Thermosetting coating compositions |
GB9304940D0 (en) | 1993-03-11 | 1993-04-28 | Ucb Sa | Thermosetting powder compositions based on polyesters and acrylic copolymers |
US5453464A (en) | 1993-05-24 | 1995-09-26 | Eastman Chemical Company | Thermosetting coating compositions |
US5371148A (en) | 1993-06-23 | 1994-12-06 | Union Carbide Chemicals & Plastics Technology Corporation | Reactive polymers having pendant flexible side chains prepared from ethylenically unsaturated carbodiimides |
EP0706546A1 (en) | 1993-07-01 | 1996-04-17 | Eastman Chemical Company | Powder coating compositions |
US5369210A (en) | 1993-07-23 | 1994-11-29 | Eastman Chemical Company | Heat-resistant water-dispersible sulfopolyester compositions |
US5321118A (en) | 1993-09-30 | 1994-06-14 | Eastman Chemical Company | 1-acetoacetamido-2,3-propane diol monomer and polyesters prerpared therefrom |
IL110514A0 (en) | 1993-10-04 | 1994-10-21 | Eastman Chem Co | Concentrates for improving polyester compositions and a method for preparing such compositions |
US5393849A (en) | 1993-10-19 | 1995-02-28 | Georgia-Pacific Resins, Inc. | Curable polyester/polyamino compositions |
US5416187A (en) | 1994-04-04 | 1995-05-16 | Eastman Chemical Company | Process for the preparation of phenol-functional polyester resins |
ATE206725T1 (en) | 1994-04-06 | 2001-10-15 | Ppg Ind Ohio Inc | COATING COMPOSITIONS CONTAINING 1,4-CYCLOHEXANE-DIMETHANOL |
US5393609A (en) | 1994-06-13 | 1995-02-28 | Eastman Chemical Company | Weatherable powder coatings |
FR2722204B1 (en) | 1994-07-08 | 1996-09-20 | Coatex Sa | NOVEL ANHYDRIDE DERIVATIVES AND NOVEL LOADED POLYMERIC COMPOSITIONS AND APPLICATIONS THEREOF |
JPH0873781A (en) | 1994-09-12 | 1996-03-19 | Sumitomo Metal Ind Ltd | Production of glaze-skinned decorative metallic sheet excellent in staining resistance |
US5498668A (en) | 1994-10-31 | 1996-03-12 | Eastman Chemical Company | Blends of certain polyesters with acrylics |
DE19500358A1 (en) | 1995-01-09 | 1996-07-11 | Bayer Ag | Polyester polyols and their use in two-component polyurethane coatings |
US5464909A (en) | 1995-03-24 | 1995-11-07 | Eastman Chemical Company | Powder coating having good UV resistance |
US5554701A (en) | 1995-03-24 | 1996-09-10 | Eastman Chemical Company | Crosslinked polyesters made from decahydronaphthalene dimethanol |
US5663266A (en) | 1995-04-12 | 1997-09-02 | Eastman Chemical Company | Waterborne coating compositions |
US5681906A (en) | 1995-04-19 | 1997-10-28 | Exxon Chemical Patents Inc. | Thermoset coating compositions having improved hardness |
AU5664096A (en) | 1995-04-19 | 1996-11-07 | Exxon Chemical Company | Compositions containing polyols, phenolic esters and isocyanates |
JPH093341A (en) | 1995-06-15 | 1997-01-07 | Nippon Oil & Fats Co Ltd | Thermosetting composition, coating and finishing method and coated article, and moding method and molded article |
US5646237A (en) | 1995-08-15 | 1997-07-08 | Eastman Chemical Company | Water-dispersible copolyester-ether compositions |
US5696176A (en) | 1995-09-22 | 1997-12-09 | Eastman Chemical Company | Foamable polyester compositions having a low level of unreacted branching agent |
JPH09111183A (en) | 1995-10-20 | 1997-04-28 | Kansai Paint Co Ltd | Coating composition and one-coat steel sheet |
DE19629823A1 (en) | 1996-07-24 | 1998-01-29 | Basf Lacke & Farben | Coating composition based on a branched hydroxyl-containing, polyester-modified polyacrylate resin and its use in processes for producing a multicoat paint system |
US5955565A (en) | 1996-12-28 | 1999-09-21 | Eastman Chemical Company | Polyesters from terephthalic acid, 2,2,4,4-tetramethyl-1,3-cyclobutanediol and ethylene glycol |
NL1005809C2 (en) | 1997-04-14 | 1998-10-19 | Dsm Nv | Powder paint binder composition. |
KR20010012142A (en) | 1997-05-02 | 2001-02-15 | 해리 제이. 그윈넬 | Antiblock coating for hot melt adhesives |
US6887937B1 (en) | 1997-05-21 | 2005-05-03 | Akzo Nobel Nv | Coating composition based on a hydroxy group-containing film forming polymer, a polyisocyanate compound, and a diol |
US5919873A (en) | 1997-07-28 | 1999-07-06 | Rio Oeste, S.A. | Crosslinked phenolic polyesters |
MY133123A (en) | 1998-04-07 | 2007-10-31 | Shell Int Research | Glycidation of carboxyl-functional polyester and 3 c-containing monocarboxylic acid or its glycidyl ester |
US6211309B1 (en) | 1998-06-29 | 2001-04-03 | Basf Corporation | Water-dispersable materials |
US6248843B1 (en) | 1998-09-18 | 2001-06-19 | Mcwhorter Technologies, Inc. | Powder coatings based on branched oligoesters and triazole blocked polyisocyanates |
US20010051706A1 (en) | 1998-12-03 | 2001-12-13 | Scott E. George | Terephthalate-based sulfopolyesters |
US6265072B1 (en) | 1999-04-27 | 2001-07-24 | Eastman Chemical Company | UV-stabilized polymeric structures |
ES2223538T3 (en) | 1999-06-29 | 2005-03-01 | Eastman Chemical Company | COMPOSITIONS OF INTERMEDIATES OF POLYESTER RESINS AND PREPARATION AND USE OF THE SAME. |
US6255366B1 (en) | 1999-10-01 | 2001-07-03 | Eastman Chemical Company | Sulfopolymers as emulsion stabilizers with improved coagulum level |
US6342144B1 (en) | 1999-12-15 | 2002-01-29 | Basf Aktiengesellschaft | Cured multilayer coating and processing for its production |
CA2399582A1 (en) | 2000-02-08 | 2001-08-16 | The C.P. Hall Company | Low voc, nonlinear polyester polyol resin-based compositions |
EP1316568B1 (en) | 2000-09-05 | 2007-08-15 | Dainippon Ink And Chemicals, Inc. | Unsaturated polyester resin composition |
JP2002235038A (en) | 2001-02-08 | 2002-08-23 | Mitsubishi Electric Corp | Powder coating material composition dispersed in nonaqueous medium |
SE518592C2 (en) | 2001-02-16 | 2002-10-29 | Perstorp Specialty Chem Ab | Process for preparing a carboxyl terminated dendritic polyester, powder coating composition prepared according to the method, and its use |
JP2002302639A (en) | 2001-04-06 | 2002-10-18 | Kansai Paint Co Ltd | Aqueous coating composition for inner surface of can |
ATE326505T1 (en) | 2001-07-06 | 2006-06-15 | Toyo Boseki | AQUEOUS RESIN COMPOSITION, AQUEOUS COATING MATERIAL CONTAINING SAID COMPOSITION, COATING OF SAID MATERIAL AND A METALLIC PLATE COATED WITH SUCH MATERIAL |
TWI237052B (en) | 2001-07-26 | 2005-08-01 | Surface Specialties Sa | Radiation curable powder coating compositions |
TW591341B (en) | 2001-09-26 | 2004-06-11 | Shipley Co Llc | Coating compositions for use with an overcoated photoresist |
CA2466240A1 (en) | 2001-10-09 | 2003-04-17 | Ciba Specialty Chemicals Holding Inc. | Polyester and polyamide compositions of low residual aldehyde content |
DE10159049A1 (en) | 2001-11-30 | 2003-06-12 | Arteva Tech Sarl | Thermally stable, antimony-free polyester, process for its production and its use |
US6780523B2 (en) | 2002-04-12 | 2004-08-24 | Eastman Chemical Company | Waterborne acetoacetate-functionalized alkyd coating compositions |
US6986864B2 (en) | 2002-04-30 | 2006-01-17 | David Scott Porter | Polyester compositions |
US7087672B2 (en) | 2002-05-08 | 2006-08-08 | E. I. Du Pont De Nemours And Company | Non-yellowing polyester coating composition |
CA2458116C (en) | 2002-06-13 | 2011-12-13 | Dainippon Ink And Chemicals, Inc. | Aqueous resin composition |
US20040087736A1 (en) | 2002-11-04 | 2004-05-06 | Bin Wu | Powder coating compositions containing anhydride end-capped crystalline polyesters |
JP4676162B2 (en) | 2003-04-22 | 2011-04-27 | 関西ペイント株式会社 | Thermosetting water-based paint composition |
US20060079650A1 (en) | 2004-10-12 | 2006-04-13 | Stevenson Thomas A | Flexible, super durable powder coating composition |
WO2006083343A1 (en) | 2005-02-01 | 2006-08-10 | Henkel Corporation | Vinyl ether/acrylate block resins, compositions and methods of making same |
JP2006233068A (en) | 2005-02-25 | 2006-09-07 | Nippon Ester Co Ltd | Copolyester |
US20060287485A1 (en) * | 2005-06-17 | 2006-12-21 | Crawford Emmett D | Sound barriers comprising polyester compositions formed from 2,2,4,4-tetramethyl-1,3-cyclobutanediol and 1,4-cyclohexanedimethanol |
US7375144B2 (en) | 2005-06-16 | 2008-05-20 | Eastman Chemical Company | Abrasion resistant coatings |
US20130072628A1 (en) | 2005-06-17 | 2013-03-21 | Eastman Chemical Company | Coating compositions containing cyclobutanediol |
US7470500B2 (en) | 2005-07-19 | 2008-12-30 | Az Electronic Materials Usa Corp. | Organic bottom antireflective polymer compositions |
WO2007020644A1 (en) | 2005-08-17 | 2007-02-22 | Printar Ltd. | A thermosetting ink formulation for ink-jet applications |
US8586701B2 (en) | 2005-10-28 | 2013-11-19 | Eastman Chemical Company | Process for the preparation of copolyesters based on 2,2,4,4-tetramethyl-1,3-cyclobutanediol and 1,4-cyclohexanedimethanol |
US20080139687A1 (en) | 2005-11-10 | 2008-06-12 | Henkel Corporation | Vinyl Ether/Acrylate Block Resins, Compositions and Methods of Making Same |
US7915319B2 (en) | 2005-12-19 | 2011-03-29 | Henkel Corporation | Visible light curing systems, methods for reducing health risks to individuals exposed to systems designed to cure curable compositions by exposure to radiation, methods for bonding substrates and visible light curing compositions |
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US20070232778A1 (en) | 2006-03-28 | 2007-10-04 | Leslie Shane Moody | Certain polyester compositions which comprise cyclobutanediol, cyclohexanedimethanol, and high trans-cyclohexanedicarboxylic acid |
CA2649418C (en) | 2006-04-03 | 2012-07-03 | Stepan Company | Substituted alkoxylated phenols and branched sulfates for use in emulsion polymer latexes |
US20080092776A1 (en) | 2006-10-19 | 2008-04-24 | Rebecca Reid Stockl | Low-VOC additives for extending wet edge and open times of coatings |
US7855261B2 (en) | 2006-12-08 | 2010-12-21 | Eastman Chemical Company | Aldehyde removal |
US20090163402A1 (en) | 2007-12-19 | 2009-06-25 | Eastman Chemical Company | Fabric softener |
CN102660183B (en) | 2008-01-25 | 2016-03-30 | 阿克佐诺贝尔国际涂料股份有限公司 | Have substantially not containing the powder paint compositions of yellow zinc chromate primer paint |
WO2009156457A1 (en) | 2008-06-24 | 2009-12-30 | Dsm Ip Assets Bv | Modified polyester resin |
WO2010036490A1 (en) | 2008-09-24 | 2010-04-01 | Lubrizol Advanced Materials, Inc. | Tpu compositions for melt coating processes |
BRPI0922528B1 (en) | 2008-12-10 | 2018-11-13 | Valspar Sourcing Inc | coating composition, food or beverage can, or a portion thereof, and method |
US20100159176A1 (en) | 2008-12-18 | 2010-06-24 | Eastman Chemical Company | Miscible blends of terephthalate polyesters containing 1,4-cyclohexanedimethanol and 2,2,4,4-tetramethylcyclobutane-1,3-diol |
US8168721B2 (en) | 2009-02-06 | 2012-05-01 | Eastman Chemical Company | Coating compositions containing tetramethyl cyclobutanediol |
US9029460B2 (en) | 2009-02-06 | 2015-05-12 | Stacey James Marsh | Coating compositions containing acrylic and aliphatic polyester blends |
US8324316B2 (en) | 2009-02-06 | 2012-12-04 | Eastman Chemical Company | Unsaturated polyester resin compositions containing 2,2,2,4-tetramethyl-1,3-cyclobutanediol and articles made therefrom |
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DE102009020299A1 (en) | 2009-05-07 | 2010-11-11 | Clariant International Ltd. | Comb polymers and their use in detergents and cleaners |
CN102686638B (en) | 2009-10-30 | 2015-04-01 | 陶氏环球技术有限责任公司 | Alkyd dispersion, and a process for producing the same |
WO2011079459A1 (en) | 2009-12-31 | 2011-07-07 | Rhodia (China) Co., Ltd. | Combination of polymer and surfactant for improved laundry |
EP2365036A1 (en) | 2010-03-12 | 2011-09-14 | Cytec Surface Specialties, S.A. | Radiation curable aqueous coating compositions |
US8383710B2 (en) | 2010-10-21 | 2013-02-26 | Eastman Chemical Company | Waterborne coating compositions containing low-VOC coalescents |
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DE102011013556A1 (en) | 2011-03-10 | 2012-09-13 | Clariant International Ltd. | Compositions containing copolymers |
US8580872B2 (en) | 2011-07-21 | 2013-11-12 | Eastman Chemical Company | Sulfopolyester polymer compositions with improved water dispersibility |
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US20140303283A1 (en) | 2013-03-15 | 2014-10-09 | The Sherwin-Williams Company | Curable compositions |
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US9487619B2 (en) | 2014-10-27 | 2016-11-08 | Eastman Chemical Company | Carboxyl functional curable polyesters containing tetra-alkyl cyclobutanediol |
US20160115345A1 (en) | 2014-10-27 | 2016-04-28 | Eastman Chemical Company | Curable polyesters and thermosetting compostions containing resole phenolic resins |
US20160115347A1 (en) | 2015-04-10 | 2016-04-28 | Eastman Chemical Company | Resole phenolic resins curable with functional polyesters |
US20160340471A1 (en) | 2015-05-19 | 2016-11-24 | Eastman Chemical Company | Aliphatic polyester coating compositions containing tetramethyl cyclobutanediol |
US20170088665A1 (en) | 2015-09-25 | 2017-03-30 | Eastman Chemical Company | POLYMERS CONTAINING CYCLOBUTANEDIOL AND 2,2 BIS(HYDROXYMETHYL) AlKYLCARBOXYLIC ACID |
US10011737B2 (en) * | 2016-03-23 | 2018-07-03 | Eastman Chemical Company | Curable polyester polyols and their use in thermosetting soft feel coating formulations |
-
2015
- 2015-05-19 US US14/716,027 patent/US20160340471A1/en not_active Abandoned
-
2016
- 2016-05-16 EP EP16797072.2A patent/EP3298063A4/en not_active Withdrawn
- 2016-05-16 CN CN201680028703.2A patent/CN107531889B/en active Active
- 2016-05-16 WO PCT/US2016/032646 patent/WO2016187095A1/en unknown
-
2017
- 2017-12-19 US US15/846,388 patent/US10676565B2/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5393840A (en) * | 1993-11-01 | 1995-02-28 | Eastman Chemical Company | Thermosetting coating compositions |
US20130296488A1 (en) * | 2009-02-06 | 2013-11-07 | Eastman Chemical Company | Thermosetting polyester coating compositions containing tetramethyl cyclobutanediol |
US20140296407A1 (en) * | 2009-02-06 | 2014-10-02 | Eastman Chemical Company | Aliphatic polyester coating compositions containing tetramethyl cyclobutanediol |
US20150099837A1 (en) * | 2012-05-09 | 2015-04-09 | Dow Global Technologies Llc | Polyester Composition and Method of Producing the Same |
Non-Patent Citations (1)
Title |
---|
See also references of EP3298063A4 * |
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WO2024026334A1 (en) * | 2022-07-27 | 2024-02-01 | Eastman Chemical Company | Thermosetting powder coating compositions |
Also Published As
Publication number | Publication date |
---|---|
US20160340471A1 (en) | 2016-11-24 |
CN107531889A (en) | 2018-01-02 |
US10676565B2 (en) | 2020-06-09 |
CN107531889B (en) | 2020-07-10 |
US20180105640A1 (en) | 2018-04-19 |
EP3298063A1 (en) | 2018-03-28 |
EP3298063A4 (en) | 2018-12-05 |
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