WO2003000760A1 - Verfahren zur herstellung einer wässrigen dispersion von aus polymerisat und feinteiligem anorganischem feststoff aufgebauten partikeln - Google Patents
Verfahren zur herstellung einer wässrigen dispersion von aus polymerisat und feinteiligem anorganischem feststoff aufgebauten partikeln Download PDFInfo
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- WO2003000760A1 WO2003000760A1 PCT/EP2002/006545 EP0206545W WO03000760A1 WO 2003000760 A1 WO2003000760 A1 WO 2003000760A1 EP 0206545 W EP0206545 W EP 0206545W WO 03000760 A1 WO03000760 A1 WO 03000760A1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/44—Polymerisation in the presence of compounding ingredients, e.g. plasticisers, dyestuffs, fillers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F292/00—Macromolecular compounds obtained by polymerising monomers on to inorganic materials
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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
- C08L51/00—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L51/10—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers grafted on to inorganic materials
Definitions
- the present invention relates to a process for the preparation of an aqueous dispersion of particles (composite particles) composed of polymer and finely divided inorganic solid, in which a mixture of ethylenically unsaturated monomers is dispersed in an aqueous medium and by means of at least one radical polymerization initiator in the presence of at least one dispersed, finely divided inorganic solid and at least one anionic, cationic and nonionic dispersant is polymerized according to the radical aqueous emulsion polymerization method. Furthermore, the present invention relates to the use of the aqueous composite particle dispersion and the composite particle powder accessible therefrom.
- Aqueous dispersions of composite particles are generally known. These are fluid systems which, as a disperse phase in an aqueous dispersion medium, contain polymer balls consisting of a plurality of intertwined polymer chains, the so-called polymer matrix, and finely divided inorganic solid particles in dispersed distribution.
- the diameter of the composite particles is often in the range from 30 nm to 5000 nm.
- aqueous dispersions of composite particles have the potential to form modified, finely divided inorganic solid-containing polymer films, which is why they are used in particular as modified binders, e.g. are of interest for paints or for masses for coating leather, paper or plastic films.
- modified binders e.g. are of interest for paints or for masses for coating leather, paper or plastic films.
- the composite particle powders which are in principle accessible from aqueous dispersions of composite particles are also of interest as additives for plastics, components for toner formulations or additives in electrophotographic applications.
- EP-A 104 498 relates to a process for the production of polymer-coated solids. It is characteristic of the process that finely divided solids, which have a minimal surface charge, are dispersed in an aqueous polymerization medium by means of a nonionic protective colloid and the
- US Pat. No. 4,421,660 discloses a process for the production of aqueous dispersions, the dispersed particles of which
- the aqueous dispersions are prepared by free-radically initiated aqueous emulsion polymerization of hydrophobic ethylenically unsaturated monomers in the presence of dispersed inorganic particles.
- the radical-initiated aqueous emulsion polymerization of styrene in the presence of modified silicon dioxide particles is described by Furusawa et al. in the Journal of Colloid and Interface 35 Science 1986, 109, pages 69 to 76.
- the spherical silicon dioxide particles with an average particle diameter of 190 nm are modified by means of hydroxypropyl cellulose.
- Hergeth et al. (see Polymer, 1989, 30, pages 254 to 258) describe the free-radically initiated aqueous emulsion polymerization of methyl methacrylate or vinyl acetate in the presence of aggregated fine-particle quartz powder.
- the particle sizes of the aggregated quartz powder used are between 1 ⁇ m and
- GB-A 2 227 739 relates to a special emulsion polymerization process in which ethylenically unsaturated monomers are polymerized in the presence of dispersed inorganic powders which have cationic charges using ultrasound waves.
- the cationic charges of the dispersed solid particles are generated by treating the particles with cationic agents, with aluminum salts being preferred.
- the document contains no information regarding particle sizes and stability of the aqueous solid dispersions.
- EP-A 505 230 discloses the free-radically aqueous emulsion polymerization of ethylenically unsaturated monomers in the presence of surface-modified silicon dioxide particles. 15 They are functionalized using special acrylic acid esters containing silanol groups.
- US-A 4,981,882 relates to the production of composite particles by means of a special emulsion polymerization process.
- Essential to the driving are finely divided inorganic particles which are dispersed in the aqueous medium by means of basic dispersants, the treatment of these inorganic particles with ethylenically unsaturated carboxylic acids and the addition of at least one amphiphilic component to stabilize the solids dispersion.
- the fine-particle inorganic particles preferably have a particle size between 100 and 700 nm.
- EP-A 572 128 relates to a production process for composite particles, in which the inorganic particles are treated in an aqueous medium at a specific pH with an organic polyacid or its salt and the radically initiated aqueous emulsion polymerization of ethylenically unsaturated ones subsequently carried out Monomers takes place at a pH ⁇ 9.
- Bourgeat-Lami et al. describe the reaction products which are accessible by free-radically aqueous emulsion polymerization of ethyl acrylate in the presence of functionalized and non-functionalized silicon dioxide particles.
- anionically charged silicon dioxide particles, the nonionic nonylphenol ethoxylate NP30 and the anionic sodium dodecyl sulfate (SDS) were generally used as emulsifiers and potassium peroxodisulfate as the radical polymerization initiator.
- SDS sodium dodecyl sulfate
- the authors describe the reaction products obtained as aggregates that contain more than one silicon dioxide particle or as polymer clusters that form on the surface of the silicon dioxide.
- Iron (II / III) oxide hydrate is an essential requirement.
- the authors favored the second synthetic route, styrene and methacrylic acid in the presence of the freshly precipitated ice (11 / III) oxide hydrate, the emulsifier N-cetyl-N, N, N-trimethylammonium bromide (CTAB) and special surface-active polymerization initiators (PEGA 600) in methanolic / aqueous medium
- a strong acid / base interaction between the polymer formed and the acidic silicon dioxide particles used is postulated as a prerequisite for the formation of silicon dioxide-containing polymer particles.
- Polymer particles containing silicon dioxide were obtained with poly-4-vinylpyridine and copolymers of styrene or methyl methacrylate with 4-vinylpyridine.
- the lowest possible content of 4-vinylpyridine in methyl methacrylate or styrene monomer mixtures which are capable of forming silicon dioxide-containing composite particles was 4 to 10 mol%.
- a process for producing an aqueous dispersion of particles (composite particles) composed of polymer and finely divided inorganic solid in which at least one ethylenically unsaturated monomer is dispersed in an aqueous medium and by means of at least one radical Polymerization initiator in the presence of at least one dispersed, finely divided inorganic solid and at least one anionic, cationic and nonionic dispersant is polymerized by the method of free-radically aqueous emulsion polymerization, where
- a stable aqueous dispersion of the at least one inorganic solid is used, which is characterized in that at an initial solid concentration of> 1% by weight, based on the aqueous dispersion of the at least one inorganic solid, it is still one hour after its preparation contains as 90% by weight of the originally dispersed solid in dispersed form and whose dispersed solid particles have a diameter of ⁇ 100 nm,
- At least one anionic, cationic and nonionic dispersant is added to the aqueous solid particle dispersion before the addition of the at least one ethylenically unsaturated monomer is started,
- the remaining amount of the at least one monomer is then added under polymerization conditions in accordance with the consumption.
- Suitable for the process according to the invention are all those fine-particle inorganic solids which form stable aqueous dispersions which, at an initial solids concentration of> 1% by weight, based on the aqueous dispersion of the at least one inorganic solid, still have one hour after their preparation Stirring or shaking contain more than 90 wt .-% of the originally dispersed solid in dispersed form and their dispersed solid particles have a diameter of ⁇ 100 nm and moreover exhibit a non-zero electrophoretic mobility at a pH value which corresponds to the pH value of the aqueous reaction medium before the start of the addition of the dispersants.
- Metals such as metal oxides and metal salts but also semimetal and non-metal compounds are suitable as finely divided inorganic solids which can be used according to the invention.
- Precious metal colloids such as, for example, palladium, silver, ruthenium, platinum, gold and rhodium, and alloys containing these can be used as finely divided metal powder.
- sulfides such as iron (II) sulfide, iron (III) sulfide.
- orthosilicates such as lithium orthosilicate, calcium / magnesium orthosilicate, aluminum orthosilicate, iron (II) orthosilicate, iron (III) orthosilicate, magnesium orthosilicate , Zinc orthosilicate, zirconium (III) orthosilicate, zirconium (IV) orthosilicate, metasilicates, such as lithium metasilicate, calcium / magnesium metasilicate, calcium metasilicate, magnesium metasilicate, zinc metasilicate, layered silicates, such as sodium aluminum silicate and sodium magnesium silicate, in particular in spontaneous form , such as Optigel ® SH (brand of Südchemie AG), Saponit ® SKS-20 and Hektorit ® SKS 21 (brands of Hoechs t AG) and Laponite ® RD and Laponite ® GS (brands of Laporte Industries Ltd.), aluminates such as lithium aluminate, calcium aluminate, zinc aluminat
- Amorphous silicon dioxide and / or silicon dioxide present in different crystal structures may be mentioned as the essential semimetal compound which can be used according to the invention.
- suitable silica is commercially available and may, for example, as Aerosil ® (trademark of. Degussa AG), Levasil® ® (trademark of. Bayer AG), Ludox ® (trademark of. DuPont), Nyacol ® and Bindzil ® (trademarks of Akzo-Nobel) and Snowtex ® (trademark of Nissan Chemical Industries, Ltd.).
- Non-metal compounds suitable according to the invention are, for example, colloidal graphite or diamond.
- Particularly suitable as finely divided inorganic solids are those whose solubility in water at 20 ° C. and 1 bar (absolute)
- Compounds are particularly preferably selected from the group comprising silicon dioxide, aluminum oxide, tin (IV) oxide, yttrium III) oxide, cerium (IV) oxide, hydroxyaluminium oxide, calcium carbonate,
- the commercially available compounds of the Aerosil ® , Levasil ® , Ludox ® , Nyacol ® and Bindzil ® brands (silicon dioxide), Disperal brands (hydroxyaluminium oxide), Nyacol ® AL brands (aluminum oxide) and Hombitec ® can also be used advantageously Brands (titanium dioxide), Nyacol ® SN brands (tin (IV) oxide), Nyacol ® YTTRIA brands (yttrium (III) oxide), Nyacol ® CE02 brands (cerium (IV) oxide) and Sachotec ® brands (zinc oxide) are used in the process according to the invention.
- the finely divided inorganic solids which can be used in the process according to the invention are such that the solid particles dispersed in the aqueous reaction medium have a particle diameter of ⁇ 100 nm.
- Such finely divided inorganic solids are successfully used, the dispersed particles of which have a particle diameter> 0 nm but ⁇ 90 nm,
- finely divided inorganic solids which have a particle diameter of ⁇ 50 nm.
- the particle diameter is determined using the analytical ultracentrifuge method.
- the accessibility of finely divided solids is known in principle to the person skilled in the art and is carried out, for example, by precipitation reactions or chemical reactions in the gas phase (cf. E. Matijevic, Chem. Mater. 1993, 5, pages 412 to 426; Ullmann's Encyclopedia of Industrial Kitchen, Vol.
- the stable solid dispersion is often produced directly in the synthesis of the finely divided inorganic solids in an aqueous medium or alternatively by dispersing the finely divided inorganic solid in the aqueous medium.
- this can be achieved either directly, for example in the case of precipitated or pyrogenic silicon dioxide, aluminum oxide, etc., or with the aid of suitable auxiliary units, such as, for example, dispersants or ultrasound sonotrodes.
- fine-particle inorganic solids are suitable whose aqueous solid dispersion at an initial solids concentration of> 1% by weight, based on the aqueous dispersion of the fine-particle inorganic solid, for one hour after their preparation or by stirring or shaking the sedimented solids without further stirring or shaking contains more than 90% by weight of the originally dispersed solid in dispersed form and whose dispersed solid particles have a diameter of ⁇ 100 nm.
- Initial solids concentrations of ⁇ 60% by weight are common. However, initial solids concentrations of ⁇ 55% by weight,
- the dispersed solid particles in an aqueous standard potassium chloride solution have a non-zero electrophoretic mobility at a pH which corresponds to the pH of the aqueous reaction medium before the start of the addition of the dispersants.
- the pH value Mooding takes place at 20 ° C. and 1 bar (absolute) using commercially available pH measuring devices on an aqueous dispersion which, in addition to the at least one finely divided inorganic solid, may also contain acids or bases for adjusting the pH.
- the method for determining electrophoretic mobility is known to the person skilled in the art (see, for example, RJ Hunter, Introduction to modern Colloid Science, chapter 8.4, pages 241 to 248, Oxford University Press, Oxford, 1993 and K. Oka and K. Furusawa, in Electrical Phenomena at Interfaces, Surfactant Science Series, vol. 76, chapter 8, pages 151 to 232, Marcel Dekker, New York, 1998).
- the electrophoretic mobility of the solid particles dispersed in the aqueous reaction medium is determined by means of a commercially available electrophoresis device, such as the Zetazzer 3000 from Malvern Instruments Ltd., at 20 ° C. and 1 bar (absolute).
- the aqueous solid particle dispersion is diluted with a pH-neutral 10 millimolar (mM) aqueous potassium chloride solution (standard potassium chloride solution) to such an extent that the solid particle concentration is approximately 50 to 100 mg / 1.
- the measurement sample is adjusted to the pH value which the aqueous reaction medium has before the addition of the dispersing agent is carried out by means of the common inorganic acids, such as, for example, dilute hydrochloric acid or nitric acid, or bases, such as, for example, dilute sodium hydroxide solution or potassium hydroxide solution.
- the migration of the dispersed solid particles in the electric field is detected by means of the so-called electrophoretic light scattering (cf. e.g. B.R.
- the sign of the electrophoretic mobility is defined by the direction of migration of the dispersed solid particles, i.e. If the dispersed solid particles migrate to the cathode, their electrophoretic mobility is positive, but if they migrate to the anode, they are negative.
- a suitable parameter to influence or adjust the electrophoretic mobility of dispersed solid particles to a certain extent is the pH value of the aqueous reaction medium. Protonation or deprotonation of the dispersed solid particles changes the electrophoretic mobility in the acidic pH range (pH ⁇ 7) in the positive direction and in the alkaline range (pH> 7) in the negative direction.
- a pH range suitable for the process according to the invention is that within which a free-radically initiated aqueous emulsion polymerization can be carried out. This pH range is in usually at pH 1 to 12, often at pH 1.5 to 11 and often at pH 2 to 10.
- the pH of the aqueous reaction medium can be adjusted using customary acids, such as, for example, dilute hydrochloric, nitric or sulfuric acid, or bases, such as, for example, dilute sodium or potassium hydroxide solution. It is often advantageous if some or all of the amount of acid or base used for pH adjustment is added to the aqueous reaction medium before the at least one finely divided inorganic solid.
- Dispersant 0.01 to 100 parts by weight, preferably 0.05 to 50 parts by weight and particularly preferably 0.1 to 20 parts by weight of at least one nonionic dispersant and at least one anionic dispersant are used, the latter Amount is dimensioned such that the equivalent ratio of anionic to cationic dispersant is greater than 1, or
- At least one ethylenically unsaturated monomer 0.01 to 10 parts by weight, preferably 0.05 to 5 parts by weight and particularly preferably 0.1 to 3 parts by weight
- Parts of at least one anionic dispersant 0.01 to 100 parts by weight, preferably 0.05 to 50 parts by weight and particularly preferably 0.1 to 20 parts by weight of at least one nonionic dispersant and at least one cationic dispersant are, the amount of which is such that the equivalent ratio of cationic to anionic dispersant is greater than 1.
- dispersants are used in the context of the present process which keep both the finely divided inorganic solid particles and the monomer droplets and the composite particles formed dispersed in the aqueous phase and thus ensure the stability of the aqueous composite particle dispersion produced.
- a dispersant Both the protective colloids commonly used to carry out free-radical aqueous emulsion polymerizations and emulsifiers are suitable.
- Suitable neutral protective colloids are, for example, polyvinyl alcohols, polyalkylene glycols, cellulose, starch and gelatin derivatives.
- anionic protective colloids i.e. Protective colloids, the dispersing component of which has at least one negative electrical charge
- Protective colloids are, for example, polyacrylic acids and polymethacrylic acids and their alkali metal salts, acrylic acid, methacrylic acid, 2-acrylamido-2-methylpropanesulfonic acid, 4-styrenesulfonic acid and / or maleic anhydride Copolymers and their alkali metal salts and alkali metal salts of
- Sulfonic acids of high molecular weight compounds such as polystyrene
- Suitable cationic protective colloids are, for example, the derivatives of N-vinylpyrrolidone, N-vinylcaprolactam, N-vinylcarbazole, 1-vinylimidazole, 2-vinylimidazole, 2-vinylpyridine which are protonated and / or alkylated , 4-vinylpyridine, acrylamide, methacrylamide, acrylate-bearing amine groups, methacrylates, acrylamides and / or homo- and copolymers containing methacrylamides.
- molecular weights are usually below 1000.
- emulsifiers can be found in Houben-Weyl, Methods of Organic Chemistry, Volume XIV / l, Macromolecular Substances, Georg-Thieme-Verlag, Stuttgart, 1961, pages 192 to 208.
- Common nonionic emulsifiers are, for example, ethoxylated mono-, di- and tri-alkylphenols (EO grade: 3 to 50, alkyl radical: C 4 to C 12 ) and ethoxylated fatty alcohols (EO grade: 3 to 80; Alkyl radical: C 8 to C 36 ).
- Lutensol ® A brands C 2 -C 4 fatty alcohol ethoxylates, EO grade: 3 to 8
- Lutensol ® A brands C 3 C 5 oxo alcohol ethoxylates, EO grade: 3 to 30
- Lutensol ® AT brands C ⁇ 6 C ⁇ 8 fatty alcohol ethoxylates, EO grade: 11 to 80
- Lutensol ® ON brands Cio-oxo alcohol ethoxylates, EO grade: 3 to 11
- Lutensol ® TO brands C ⁇ 3 - Oxo alcohol ethoxylates, EO grade: 3 to 20
- Typical anionic emulsifiers are, for example, alkali metal and ammonium salts of alkyl sulfates (alkyl radical: Cs to C ⁇ 2 ), of sulfuric acid semiesters of ethoxylated alkanols (EO degree: 4 to 30, alkyl radical: C 12 to Cis) and ethoxylated alkylphenols (EO degree: 3 to 50, alkyl radical: C 4 to C ⁇ ), of alkyl sulfonic acids (alkyl radical: C ⁇ 2 to Cis) and of alkylarylsulfonic acids (alkyl radical: C 9 to Cis).
- alkyl sulfates alkyl radical: Cs to C ⁇ 2
- sulfuric acid semiesters of ethoxylated alkanols EO degree: 4 to 30, alkyl radical: C 12 to Cis
- EO degree: 3 to 50 alkyl radical: C 4 to C ⁇
- alkyl radical: C ⁇ 2 to Cis alky
- R 1 and R 2 are H atoms or C 4 - to C 24 -alkyl and are not simultaneously H atoms, and A and B can be alkali metal ions and / or ammonium ions.
- R 1 and R 2 are preferably linear or branched alkyl radicals having 6 to 18 carbon atoms, in particular having 6, 12 and 16 carbon atoms or -H, where R 1 and R 2 are not both H atoms at the same time are.
- a and B are preferably sodium, potassium or ammonium, with sodium being particularly preferred.
- Compounds I in which A and B are sodium, R 1 is a branched alkyl radical having 12 C atoms and R 2 is an H atom or R 1 are particularly advantageous.
- Suitable cationic emulsifiers are generally a primary, secondary, tertiary or quaternary ammonium salt, alkali metal having a C 1-6 -alkyl, aralkyl or heterocyclic radical. nolammoniumsalze, pyridinium salts, imidazolinium salts, Oxazolini- umsalze, morpholinium, thiazolinium, and salts of A minoxiden, quinolinium salts, isoquinolinium salts, tropylium salts, sulfonium salts and phosphonium salts.
- Examples include dodecylammonium acetate or the corresponding hydrochloride, the chlorides or acetates of the various 2- (N, N, N-trimethylammonium) ethyl paraffinates, N-cetylpyridinium chloride, N-laurylpyridinium sulfate and N-cetyl-N, N, N-trimethylammonium bromide, N-dodecyl-N, N, N-trimethylammonium bromide, N-octyl-N, N, N-trimethlyammonium bromide, N, N-distearyl-N, N-dimethylammonium chloride and the gemini surfactant N, N'- ( Lauryldimethyl) ethylenediamine di-bromide.
- the total amount of the at least one anionic, cationic and nonionic dispersant used in the process can be introduced into the aqueous solid dispersion.
- the equivalent ratio of anionic to cationic dispersant must be greater than 1 during the entire emulsion polymerization.
- the equivalent ratio of cationic to anionic Dispersant must be greater than 1 during the entire emulsion polymerization. It is advantageous if the equivalent ratio>2>3>4>5>6> 7, or> 10, wherein the äquiva ⁇ equivalents ratio in the range between 2 and 5 is particularly low. 5
- At least one nonionic dispersant is added before the at least one anionic and cationic dispersant.
- the method according to the invention differs from this procedure only in the additional presence of at least one finely divided inorganic solid which has a non-zero electrophoretic mobility and the use of a specific
- At least one ethylenically unsaturated monomer includes especially monomers that can be polymerized by free radicals, such as
- vinylaromatic monomers such as styrene, cc-methylstyrene, o-chlorostyrene or vinyltoluenes
- esters of vinyl alcohol and monocarboxylic acids containing 1 to 18 carbon atoms such as vinyl acetate, vinyl propionate, vinyl n-butyrate, vinyl laurate and Vinyl stearate, esters of preferably having 3 to 6 carbon atoms
- ⁇ -monoethylenically unsaturated mono- and dicarboxylic acids such as in particular acrylic acid, methacrylic acid, maleic acid, fumaric acid and itaconic acid, with generally 1 to 12, preferably 1 to Alkanols containing 8 and in particular 1 to 4 carbon atoms, such as, in particular, methyl, ethyl, n-butyl, isobutyl and -2-ethylhexyl acrylate and methacrylic acid, dimethyl maleate or di-maleic acid butyl esters, nitriles ⁇ , ⁇ -monoethylenically unsaturated carboxylic acids, such as acrylonitrile, and C_s-conjugated dienes, such as 1,3-butadiene and isoprene.
- mono- and dicarboxylic acids such as in particular acrylic acid, methacrylic acid, maleic acid, fumaric acid and itaconic acid, with generally 1 to 12, preferably 1
- the monomers mentioned generally form the main monomers which, based on the total amount of the monomers to be polymerized by the process according to the invention, normally make up a proportion of> 50% by weight,> 80% by weight or> 90% by weight unite on itself. As a rule, these monomers have only moderate to low solubility in water at normal conditions [20 ° C, 1 bar (absolute)].
- Monomers which usually increase the internal strength of the films of the polymer matrix normally have at least one epoxy, hydroxyl, N-methylol or carbonyl group, or at least two non-conjugated ethylenically unsaturated double bonds. Examples of these are two monomers having vinyl residues, two monomers having vinylidene residues and two monomers having alkenyl residues.
- the di-esters of dihydric alcohols with ⁇ , ⁇ -monoethylenically unsaturated monocarboxylic acids are particularly advantageous, among which acrylic and methacrylic acid are preferred.
- alkylene glycol diacrylates and alkimethacrylates such as ethylene glycol diacrylate, 1,2-propylene glycol diacrylate, 1,3-propylene glycol diacrylate, 1,3-butylene glycol diacrylate, 1,4-butylene glycol and 1-butylene glycol and 1-butylene glycol, Propylene glycol dimethacrylate, 1, 3-propylene glycol dimethacrylate, 1, 3-butylene glycol dimethacrylate, 1, 4-butylene glycol dimethacrylate and di-inylbenzene, vinyl methacrylate, vinyl acrylate, allyl methacrylate, allyla acrylate, diallyl malate, diallyl bisacrylate, diallyl bisacrylate, diallyl bisacrylate, diallyl bisacrylate, diallyl bisacrylate, diallyl bisacrylate, Of particular importance in this connection are the methacrylic acid and acrylic acid -CC 8 -hydroxyalkyl esters such as n-
- Monomers containing siloxane groups such as vinyltrialkoxysilanes, for example vinyltrimethoxysilane, alkyl - vinyldialkoxysilanes, acryloxyalkyltrialkoxysilanes, or methacryloxyalkyltrialkoxysilanes, such as, for example, acryloxyethyl - are also optional trimethoxysilane, methacryloxyethyltrimethoxysilane, acryloxypropyltrimethoxysilane or methacryloxypropyltrimethoxysilane can be used. These monomers are used in amounts of up to 2% by weight, frequently from 0.01 to 1% by weight and often from 0.05 to 0.5% by weight, in each case based on the total amount of monomers.
- those ethylenically unsaturated monomers A which either have at least one acid group and / or their corresponding anion or those ethylenically unsaturated monomers B which have at least one amino, amido, ureido or N-heterocyclic group and / or which contain ammonium derivatives protonated or alkylated on nitrogen.
- the amount of monomers A or monomers B is up to 10% by weight, often 0.1 to 7% by weight and often 0.2 to 5% by weight.
- monomers A ethylenically unsaturated monomers with at least one acid group are used.
- the acid group can be, for example, a carboxylic acid, sulfonic acid, sulfuric acid, phosphoric acid and / or phosphonic acid group.
- Examples of monomers A are acrylic acid, methacrylic acid, maleic acid, fumaric acid, itaconic acid, crotonic acid, 4-styrenesulphonic acid, 2-methacryloxyethylsulphonic acid, vinylsulphonic acid and vinylphosphonic acid and phosphoric acid monoesters of n-hydroxyalkyl acrylates and n-hydroxyalkyl methacrylates, such as, for example, phosphoric acid monoester of hydroxylates Hydroxypropyl acrylate, n-hydroxybutyl acrylate and hydroxyethyl methacrylate, n-hydroxypropyl methacrylate or n-hydroxybutyl methacrylate.
- ammonium and alkali metal salts of the abovementioned ethylenically unsaturated monomers some of which have an acid group.
- Sodium and potassium are particularly preferred as alkali metals.
- Examples include the ammonium, sodium and potassium salts of acrylic acid, methacrylic acid, maleic acid, fumaric acid, itaconic acid, crotonic acid, 4-styrenesulfonic acid, 2-methacryloxyethylsulfonic acid, vinylsulfonic acid and vinylphosphonic acid as well as the mono- and di-ammonium, - Sodium and potassium salts of the phosphoric acid monoesters of hydroxyethyl acrylate, n-hydroxypropyl acrylate, n-hydroxybutyl acrylate and hydroxyethyl methacrylate, n-hydroxypropyl methacrylate or n-hydroxybutyl methacrylate.
- Acrylic acid methacrylic acid, maleic acid, fumaric acid, itaconic acid, crotonic acid, 4-styrene sulfonic acid, 2-methacryloxyethyl sulfonic acid, vinyl sulfonic acid and vinyl phosphonic acid are preferably used.
- monomers B ethylenically unsaturated monomers are used which contain at least one amino, amido, ureido or N-heterocyclic group and / or their ammonium derivatives protonated or alkylated on nitrogen.
- Examples of monomers B which contain at least one amino group are 2-aminoethyl acrylate, 2-aminoethyl methacrylate, 3-amino propyl acrylate, 3-aminopropyl methacrylate, 4-amino-n-butyl acrylate, 4-amino-n-butyl methacrylate, 2- (N- Methylamino) ethyl acrylate, 2- (N-methylamino) ethyl methacrylate, 2- (N-ethylamino) ethyl acrylate, 2- (N-ethylamino) ethyl methacrylate, 2- (Nn-propylamino) ethyl acrylate, 2- (Nn-propylamino) ethyl methacrylate, 2 - (N-iso-propylamino) ethyl methacrylate, 2- (N-iso-propylamino) ethyl
- NORSOCRYL ® TBAEMA Fa commercially available as NORSOCRYL ® TBAEMA Fa. Elf Atochem
- 2- (N, N-dimethylamino) ethyl acrylate for example commercially available as NORSOCRYL ® ADAME Fa. Elf Atochem
- 2- (N, N-dimethylamino) ethyl methacrylate for example commercially available as NORSOCRYL ® MADAME Fa.
- Examples of monomers B which contain at least one amido group are acrylamide, methacrylamide, N-methyl acrylamide, N-methyl methacrylamide, N-ethyl acrylamide, N-ethyl methacrylamide, Nn-propyl acrylamide, Nn-propyl methacrylamide, N-iso-propylacrylamide, N -isopropyl methacrylamide, N-tert-butylacrylamide, N-tert.
- Examples of monomers B which contain at least one ureido group are N, N '-divinylethyleneurea and
- Examples of monomers B which contain at least one N-heterocyclic group are 2-vinylpyridine, 4-vinylpyridine, 1-vinylimidazole, 2-vinylimidazole and N-vinylcarbazole.
- the following compounds are preferably used: 2-vinylpyridine, 4-vinylpyridine, 2-vinylimidazole, 2- (N, N-dimethylamino) ethyl acrylate, 2- (N, N-dimethylamino) ethyl methacrylate, 2- (N, N-diethylamino) ) ethyl acrylate, 2- (N, N-diethylamino) ethyl methacrylate, 2- (N-tert-butylamino) ethyl methacrylate, N- (3-N ', N' -dimethylamino-propyDmethacrylamide and 2- (l-imidazolin-2- onyl) ethyl methacrylate.
- some or all of the abovementioned nitrogen-containing monomers B can be present in the quaternary ammonium form protonated on nitrogen.
- monomers B which have a quaternary alkylammonium structure on the nitrogen, may be mentioned by way of example, 2- (N, N, N-trimethyl thylammonium) ethylacrylatchlorid (for example commercially available as NORSOCRYL ® ADAMQUAT MC 80 from. Elf Atochem), 2- (N, N, N-trimethylammonium) ethyl methacrylate chloride (beispiels- example commercially available as NORSOCRYL MADQUAT ® MC 75 from.
- 2- (N, N, N-trimethyl thylammonium) ethylacrylatchlorid for example commercially available as NORSOCRYL ® ADAMQUAT MC 80 from. Elf Atochem
- 2- (N, N, N-trimethylammonium) ethyl methacrylate chloride (beispiels- example commercially available as NORSOCRYL MADQUAT ® MC 75 from.
- 2- (N, N, N-trimethylammonium) ethyl acrylate chloride 2- (N, N, N-trimethylammonium) ethyl methacrylate chloride, 2- (N-benzyl-N, N-dimethylammonium) ethyl acrylate chloride and 2- (N -Benzyl-N, N-dimethylammonium) ethyl methacrylate chloride used.
- Mixtures of the aforementioned ethylenically unsaturated monomers can of course also be used as at least one ethylenically unsaturated monomer.
- part or all of the at least one anionic dispersant by the equivalent amount of at least one monomer A and in the case of the presence of dispersed solid particles with a electrophoretic mobility with a positive sign, part or all of the at least one cationic dispersant can be replaced by the equivalent amount of at least one monomer B.
- At least one radical polymerization initiator for the radical aqueous emulsion polymerization according to the invention are all those who are able to initiate a radical aqueous emulsion polymerization in the presence of the at least one finely divided inorganic solid.
- these can be both peroxides and azo compounds.
- redox initiator systems can also be considered.
- inorganic peroxides such as hydrogen peroxide or peroxodisulfides, such as the mono- or di-alkali metal or ammonium salts of peroxodisulfuric acid, such as, for example, their mono- and di-sodium, potassium or ammonium salts or organic peroxides, such as Alkyl hydroperoxides, for example tert-butyl, p-mentyl or cumyl hydroperoxide, and dialkyl or diaryl peroxides, such as di-tert-butyl or di-cumyl peroxide, are used.
- organic peroxides such as Alkyl hydroperoxides, for example tert-butyl, p-mentyl or cumyl hydroperoxide, and dialkyl or diaryl peroxides, such as di-tert-butyl or di-cumyl peroxide, are used.
- the main azo compound found is 2,2'-azobis (isobutyronitrile), 2,2'-azobis (2,4-dimethylvaleronitrile) and 2,2'-azobis (amidino-propydihydrochloride (AIBA, corresponds to V-50 from Wako Chemicals) Use.
- the above-mentioned peroxides are essentially suitable as oxidizing agents for redox initiator systems.
- Sulfur compounds with a low oxidation state such as alkali sulfites, for example potassium and / or sodium sulfite, alkali hydrogen sulfites, for example potassium and / or sodium hydrogen sulfite, alkali metal sulfites, for example potassium and / or sodium metabisulfite, formaldehyde sulfoxylates, for example potassium and / or Sodium formaldehyde sulfoxylate, alkali salts, especially potassium and / or sodium salts, aliphatic sulfinic acids and alkali metal hydrogen sulfides, such as, for example, potassium and / or sodium hydrogen sulfide, salts of polyvalent metals, such as iron (II) sulfate, iron (II) ammonium sulfate, Iron (II) phosphate, endiols such as dihydroxymaleic acid, benzoin and / or ascorbic acid and reducing saccharides such as
- the total amount of the at least one radical polymerization initiator can be introduced into the reaction medium together with the at least one finely divided inorganic solid.
- the above-mentioned dispersants are added to the aqueous solid particle dispersion first, then 0.01 to 30% by weight, often 0.5 to 20% by weight and often 1 to 10% by weight of the total amount of the at least one monomer is added batchwise in one portion and these are polymerized up to a conversion of at least 90%, preferably> 95%. Subsequently, the remaining amount of the at least one ethylenically unsaturated monomer is added continuously or discontinuously under polymerization conditions in accordance with consumption.
- the monomers can be added in bulk or else in the form of an aqueous monomer emulsion.
- the reaction temperature for the radical aqueous emulsion polymerization according to the invention in the presence of the at least one finely divided inorganic solid is the entire range from 0 to 170 ° C. As a rule, temperatures Ren from 50 to 120 ° C, often 60 to 110 ° C and often> 70 to 100 ° C applied.
- the radical aqueous emulsion polymerization according to the invention can be carried out at a pressure of less than, equal to or greater than 1 bar (absolute), so that the polymerization temperature can exceed 100 ° C. and be up to 170 ° C.
- Volatile monomers such as ethylene, butadiene or vinyl chloride are preferably polymerized under elevated pressure.
- the pressure can be 1.2, 1.5, 2, 5, 10, 15 bar or even higher. If emulsion polymerizations are carried out under reduced pressure, pressures of 950 mbar, often 900 mbar and often 850 mbar (absolute) are set.
- the free radical aqueous emulsion polymerization according to the invention is advantageously carried out at 1 bar (absolute) under an inert gas atmosphere, such as, for example, under nitrogen or argon.
- the aqueous reaction medium can also include water-soluble organic solvents, such as, for example, methanol, ethanol, isopropanol, butanols, pentanols, but also acetone, etc.
- water-soluble organic solvents such as, for example, methanol, ethanol, isopropanol, butanols, pentanols, but also acetone, etc.
- the process according to the invention is preferably carried out in the absence of such solvents.
- radical chain-transferring compounds can optionally also be used in the process according to the invention in order to reduce or control the molecular weight of the polymers accessible by the polymerization.
- Essentially aliphatic and / or araliphatic halogen compounds such as, for example, n-butyl chloride, n-butyl bromide, n-butyl iodide, methylene chloride, ethylene dichloride, chloroform, bromoform, bromotrichloromethane, dibromodichloromethane, carbon tetrachloride, tetrabromochloride, come , Benzyl bromide, organic thio compounds, such as primary, secondary or tertiary aliphatic thiols, such as, for example, ethanethiol, n-propanethiol, 2-propanethiol, n-butanethiol, 2-butanethiol, 2-methyl-2-
- the total amount of the radical chain-transferring compounds optionally used in the process according to the invention is generally ⁇ 5% by weight, often ⁇ 3% by weight and frequently ⁇ 1% by weight.
- radical chain-transferring compound is fed to the reaction medium before the radical polymerization is initiated.
- some or all of the radical chain-transferring compound can advantageously also be fed to the reaction medium together with the at least one ethylenically unsaturated monomer during the polymerization.
- the process according to the invention can be carried out, for example, in such a way that a stable aqueous dispersion of the at least one finely divided inorganic solid, comprising either part or all of the water required, the at least one anionic, cationic and nonionic dispersant, the at least one polymerization initiator and 0 , 01 to 30% by weight of the total amount of the at least one ethylenically unsaturated monomer as well as any other customary auxiliaries and additives are placed in a reaction vessel and the contents of the reaction vessel are heated to the reaction temperature.
- the aqueous dispersions of composite particles accessible according to the invention usually have a solids content of 1 to 70% by weight, often 5 to 65% by weight and often 10 to 60% by weight.
- the composite particles accessible according to the invention generally have particle diameters of ⁇ 1000 nm, frequently ⁇ 500 nm and often ⁇ 250 nm. These particle diameters are also determined by the analytical ultracentrifuge method. The values given correspond to the so-called dso values.
- the composite particles obtainable by the process according to the invention can have different structures.
- the composite particles according to the invention can contain one or more of the finely divided solid particles.
- the finely divided solid particles can be completely enveloped by the polymer matrix.
- part of the finely divided solid particles can be enveloped by the polymer matrix, while another part is arranged on the surface of the polymer matrix.
- a large part of the finely divided solid particles may also be bound on the surface of the polymer matrix. It should be noted that in individual cases, depending on the solids concentration of the dispersed composite particles, there may also be a small partial agglomeration of the composite particles.
- the residual monomer amounts remaining in the aqueous dispersion of the composite particles after completion of the main polymerization reaction can be stripped by steam and / or inert gas and / or by chemical deodorization, as described, for example, in documents DE-A 4 419 518, EP-A 767 180 or DE-A 3 834 734 are removed without the properties of the aqueous composite particle dispersion being adversely affected.
- Polymer films containing inorganic solid particles can be produced in a simple manner from the aqueous composite particle dispersions accessible via the process according to the invention. Compared to the polymer films containing no inorganic solid particles, these polymer films generally have increased mechanical strength, less tarnishing, better adhesion to mineral surfaces, improved resistance to organic solvents, and increased scratch resistance, blocking resistance and heat resistance , Films of aqueous composite particle dispersions have a particularly lower sensitivity of the polymer films to organic solvents and water, in whose polymers monomers containing siloxane groups were polymerized.
- Aqueous dispersions of composite particles which are produced according to the described 5 method according to the invention, are therefore suitable as raw materials for the production of adhesives, such as, for example, pressure sensitive adhesives, construction adhesives or industrial adhesives, binders, such as, for example, for paper coating, emulsion paints or for printing inks and Druc -
- adhesives such as, for example, pressure sensitive adhesives, construction adhesives or industrial adhesives
- binders such as, for example, for paper coating, emulsion paints or for printing inks and Druc -
- the composite particle dispersions accessible to the process according to the invention can also be used to modify cementitious and
- the composite particles accessible by the method according to the invention can in principle also be used in medical diagnostics and in other medical applications (cf., for example, K. Mosbach and L. Andersson, Nature, 1977, 270, pages 259 to 261; PL Kronick, Science 1978
- composite particles can also be used as catalysts in various aqueous dispersion systems.
- the 25 aqueous dispersions of composite particles obtainable according to the invention can be easily dried into redispersible composite particle powders (e.g. freeze drying or spray drying).
- the glass transition temperature of the polymer matrix of the composite particles accessible according to the invention is> 50 ° C, 30 preferably> 60 ° C, particularly preferably> 70 ° C, very particularly preferably> 80 ° C and particularly preferably> 90 ° C or . Is> 100 ° C.
- the composite particle powders are suitable, among other things. as additives for plastics, components for toner formulations or additives in electrophotographic applications and as components in cement and mortar formulations.
- silicon dioxide was used as the finely divided inorganic solid.
- the commercially available silicon sol Nyacol ® 2040 (20 nm) from Akzo-Nobel was used as an example.
- the silicon dioxide content of the aqueous solid particle dispersion was 40% by weight and the pH was 10.
- the value given in parentheses corresponds to 45 the diameter of the inorganic solid particles according to the manufacturer's instructions.
- the solid dispersion used in the examples met all of the requirements placed on it, namely that, at an initial solid concentration of> 1% by weight, based on the aqueous dispersion of the solid, it was still more than 90 one hour after its preparation without stirring or shaking %
- the dispersed solid particles had a diameter of ⁇ 100 nm and furthermore the dispersed inorganic solid particles in an aqueous standard potassium chloride solution at a pH which corresponds to the pH of the aqueous
- Dispergiermediu s corresponded to the beginning of the addition of the dispersant, showed a non-zero electrophoretic mobility.
- reaction mixture was then heated to a reaction temperature of 76 ° C.
- a monomer mixture consisting of 123.5 g of methyl methacrylate (MMA), 126 g of n-butyl acrylate 35 (n-BA) and 0.5 g of methacryloxypropyltrimethoxysilane (MEMO) was introduced as feed 1 and an initiator solution consisting of 3 as feed 2 , 8 g of sodium peroxodisulfate, 11.5 g of a 10% by weight solution of sodium hydroxide and 100 g of deionized water.
- MMA methyl methacrylate
- n-BA n-butyl acrylate 35
- MEMO methacryloxypropyltrimethoxysilane
- the translucent aqueous composite particle dispersion thus obtained had a solids content of 40.1% by weight, based on the total weight of the aqueous composite particle dispersion.
- the solids content was generally determined by using about 1 g of the
- the d 50 particle diameter was determined to be 65 nm using an analytical ultra centrifuge (cf. SE Harding et al., Analytical Ultracentrifugation in Biochemistry and Polymer Science, Royal Society of Chemistry, Cambridge, Great Britain
- the finely divided inorganic solid dispersion was diluted with pH-neutral 10 mM potassium chloride solution (standard potassium chloride solution) to such an extent that its solid particle concentration was 60 mg per liter.
- pH-neutral 10 mM potassium chloride solution standard potassium chloride solution
- the pH of 10 was adjusted to 35 lye.
- the electrophoretic mobility of the silicon dioxide particles in Nyacol ® 2040 was negative.
- a monomer mixture consisting of 29.95 g MMA, 29.95 g n-BA and 0.10 g MEMO was introduced as feed 1 and an initiator solution consisting of 0.9 g sodium peroxodisulfate, 2 g of a feed 2 1-molar aqueous solution of sodium hydroxide and 45 g of deionized water.
- the translucent aqueous composite particle dispersion thus obtained had a solids content of 39.8% by weight, based on the total weight of the aqueous composite particle dispersion.
- the dso particle diameter obtained by means of an analytical ultracentrifuge was 100 nm. Free silicon dioxide particles could not be detected.
- Example 2 was repeated except that no Dowfax ® 2A1 used.
- Example 2 was repeated with the exception that no prepolymerization took place and the total amount of feed 1 and feed 2 of the reaction mixture was metered in over 2 hours.
- the milky, cloudy particle dispersion had a solids content of 39.8% by weight, based on the total weight of the aqueous particle dispersion.
- the particle disper- was not stable and gelled within 12 hours.
- an aqueous solution consisting of 0.6 g of methacrylic acid, 7 g of a 1 molar aqueous solution of sodium hydroxide and 5 g of deionized water was added to the stirred reaction mixture and then 0.2 g of CTAB for 30 minutes , dissolved in 30 g of deionized water.
- a monomer mixture consisting of 30 g MMA and 30 g n-BA was added as feed 1 and an initiator solution consisting of 0.9 g sodium peroxodisulfate, 2 g of a 1 molar solution of sodium hydroxide and 45 g deionized water as feed 2. ago.
- the translucent aqueous composite particle dispersion thus obtained had a solids content of 39.7% by weight, based on the total weight of the aqueous composite particle dispersion.
- the d 5 o-particle diameter determined using an analytical ultracentrifuge was nm 77th free silicon dioxide could not be detected.
Abstract
Description
Claims
Priority Applications (11)
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DK02747388T DK1401902T3 (da) | 2001-06-21 | 2002-06-14 | Fremgangsmåde til fremstilling af en vandig dispersion af partikler, som er opbygget af polymerisat og finkornet, uorganisk faststof |
US10/480,636 US7094830B2 (en) | 2001-06-21 | 2002-06-14 | Method for producing an aqueous dispersion of particles composed of a polymer and a fine-particle inorganic solid |
AU2002317809A AU2002317809B2 (en) | 2001-06-21 | 2002-06-14 | Method for producing an aqueous dispersion of particles composed of a polymer and a fine-particle inorganic solid |
CA002449887A CA2449887A1 (en) | 2001-06-21 | 2002-06-14 | Method for producing an aqueous dispersion of particles composed of a polymer and a fine-particle inorganic solid |
EP02747388A EP1401902B1 (de) | 2001-06-21 | 2002-06-14 | Verfahren zur herstellung einer wässrigen dispersion von aus polymerisat und feinteiligem anorganischem feststoff aufgebauten partikeln |
DE50211053T DE50211053D1 (de) | 2001-06-21 | 2002-06-14 | Verfahren zur herstellung einer wässrigen dispersion von aus polymerisat und feinteiligem anorganischem feststoff aufgebauten partikeln |
BRPI0210566-7A BR0210566B1 (pt) | 2001-06-21 | 2002-06-14 | processo para preparação de uma dispersão aquosa de partìculas, dispersão aquosa de partìculas compostas, uso da mesma, e, pó de partìculas compostas. |
HU0401878A HUP0401878A2 (hu) | 2001-06-21 | 2002-06-14 | Eljárás polimerizátumból és finomszemcsés szervetlen szilárd anyagból felépülő részecskék vizes diszperziójának előállítására |
KR1020037016600A KR100839291B1 (ko) | 2001-06-21 | 2002-06-14 | 중합체 및 미분 무기 고체로 구성된 입자의 수성 분산액의제조 방법 |
JP2003507161A JP4206335B2 (ja) | 2001-06-21 | 2002-06-14 | ポリマーおよび微細な無機固体物質からなる粒子の水性分散液の製法 |
NO20035700A NO20035700D0 (no) | 2001-06-21 | 2003-12-19 | Fremgangsmåte for fremstilling av en vandig dispersjon av partikler bestående av en polymer og et fin-partikkel uorganisk faststoff |
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DE10129537A DE10129537A1 (de) | 2001-06-21 | 2001-06-21 | Verfahren zur Herstellung einer wässrigen Dispersion von aus Polymerisat und feinteiligem anorganischem Feststoff aufgebauten Partikeln |
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EP (1) | EP1401902B1 (de) |
JP (1) | JP4206335B2 (de) |
KR (1) | KR100839291B1 (de) |
CN (1) | CN1235929C (de) |
AT (1) | ATE375370T1 (de) |
AU (1) | AU2002317809B2 (de) |
BR (1) | BR0210566B1 (de) |
CA (1) | CA2449887A1 (de) |
DE (2) | DE10129537A1 (de) |
DK (1) | DK1401902T3 (de) |
ES (1) | ES2292779T3 (de) |
HU (1) | HUP0401878A2 (de) |
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-
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- 2001-06-21 DE DE10129537A patent/DE10129537A1/de not_active Withdrawn
-
2002
- 2002-06-14 EP EP02747388A patent/EP1401902B1/de not_active Expired - Lifetime
- 2002-06-14 CN CNB028123115A patent/CN1235929C/zh not_active Expired - Fee Related
- 2002-06-14 DK DK02747388T patent/DK1401902T3/da active
- 2002-06-14 AU AU2002317809A patent/AU2002317809B2/en not_active Ceased
- 2002-06-14 ES ES02747388T patent/ES2292779T3/es not_active Expired - Lifetime
- 2002-06-14 WO PCT/EP2002/006545 patent/WO2003000760A1/de active IP Right Grant
- 2002-06-14 AT AT02747388T patent/ATE375370T1/de not_active IP Right Cessation
- 2002-06-14 BR BRPI0210566-7A patent/BR0210566B1/pt not_active IP Right Cessation
- 2002-06-14 HU HU0401878A patent/HUP0401878A2/hu unknown
- 2002-06-14 CA CA002449887A patent/CA2449887A1/en not_active Abandoned
- 2002-06-14 US US10/480,636 patent/US7094830B2/en not_active Expired - Fee Related
- 2002-06-14 DE DE50211053T patent/DE50211053D1/de not_active Expired - Lifetime
- 2002-06-14 KR KR1020037016600A patent/KR100839291B1/ko not_active IP Right Cessation
- 2002-06-14 JP JP2003507161A patent/JP4206335B2/ja not_active Expired - Fee Related
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Also Published As
Publication number | Publication date |
---|---|
BR0210566A (pt) | 2004-08-03 |
US7094830B2 (en) | 2006-08-22 |
JP2004532347A (ja) | 2004-10-21 |
KR20040019019A (ko) | 2004-03-04 |
US20040171728A1 (en) | 2004-09-02 |
HUP0401878A2 (hu) | 2004-12-28 |
JP4206335B2 (ja) | 2009-01-07 |
AU2002317809B2 (en) | 2007-02-01 |
CN1518566A (zh) | 2004-08-04 |
DE10129537A1 (de) | 2003-01-09 |
DK1401902T3 (da) | 2008-01-14 |
CA2449887A1 (en) | 2003-01-03 |
ATE375370T1 (de) | 2007-10-15 |
ES2292779T3 (es) | 2008-03-16 |
NO20035700D0 (no) | 2003-12-19 |
EP1401902A1 (de) | 2004-03-31 |
BR0210566B1 (pt) | 2011-06-28 |
EP1401902B1 (de) | 2007-10-10 |
DE50211053D1 (de) | 2007-11-22 |
KR100839291B1 (ko) | 2008-06-17 |
CN1235929C (zh) | 2006-01-11 |
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