USRE35223E - Cyclic aminoalkylsilanes and their use as adhesion promoters in room temperature vulcanizable polydiorganosiloxane compositions - Google Patents
Cyclic aminoalkylsilanes and their use as adhesion promoters in room temperature vulcanizable polydiorganosiloxane compositions Download PDFInfo
- Publication number
- USRE35223E USRE35223E US08/376,562 US37656295A USRE35223E US RE35223 E USRE35223 E US RE35223E US 37656295 A US37656295 A US 37656295A US RE35223 E USRE35223 E US RE35223E
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Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/54—Silicon-containing compounds
- C08K5/549—Silicon-containing compounds containing silicon in a ring
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic System
- C07F7/02—Silicon compounds
- C07F7/08—Compounds having one or more C—Si linkages
- C07F7/18—Compounds having one or more C—Si linkages as well as one or more C—O—Si linkages
- C07F7/1804—Compounds having Si-O-C linkages
-
- 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
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S528/00—Synthetic resins or natural rubbers -- part of the class 520 series
- Y10S528/901—Room temperature curable silicon-containing polymer
Definitions
- This invention relates to new compositions of matter, and more particularly to cyclic silicon-nitrogen compounds pounds useful as adhesion promotors in room temperature vulcanizable compositions.
- RTV room temperature vulcanizable
- the predominant constituent is a polydiorganosiloxane (hereinafter sometimes designated "silicone” for brevity) containing polyalkoxysilyl end groups, typically dialkoxyalkylsilyl groups. Said end groups are capable of being crosslinked by atmospheric moisture in the presence of a suitable metal-containing catalyst, usually an aluminum, tinanium or tin compound. Disclosures of RTV compositions of this type are present in many patents and publications.
- a particularly useful one-package RTV composition is disclosed in U.S. Pat. No. 4,517,337. It employs a catalyst such as dibutyltin bis(acetylacetonate), which is stable in the presence of hydroxy species such as methanol and silanol-terminated silicones and may therefore be employed without scavengers for such hydroxy species.
- a catalyst such as dibutyltin bis(acetylacetonate)
- RTV compositions have inadequate adhesion to various substrates, particularly metals such as aluminum and steel. Therefore, it is a common practice to employ adhesion promoters, typically various silicon-nitrogen compounds, in such compositions.
- the present invention provides a class of novel silicon-nitrogen compounds useful as adhesion promoters, and a method for their preparation. It also provides novel RTV compositions containing said adhesion promoters, particularly scavenger-free compositions containing tin complex catalysts such as dialkyltin bis(acetylacetonates).
- the present invention includes compositions comprising cyclic aminoalkylsilanes having the formula ##STR1## wherein R 1 is C 1-8 alkyl, each R 2 is independently hydrogen or C 1-4 primary or secondary alkyl, R 3 is methyl or ethyl and n is 2 or 3.
- R 1 radicals in the cyclic aminoalkylsilanes of this invention are C 1-8 alkyl radicals, usually methyl.
- the R 2 radicals may be hydrogen or alkyl radicals as indicated and are usually hydrogen, and R 3 is methyl or ethyl and usually methyl.
- the value of n is 2 or 3, usually 3.
- the cyclic aminoalkylsilane compositions of this invention may be prepared by effecting reaction at a temperature in the range of about 60°-125° C. between approximately equimolar amounts of an aminoalkyltrialkoxysilane of the formula ##STR2## and a glycidyl ether of the formula ##STR3## wherein R 1-3 and n are as previously defined.
- the method of preparing silicon-nitrogen compositions is another aspect of the invention.
- this reaction may be conveniently conducted by heating a mixture of the two reagents under reflux, ordinarily in an inert atmosphere such as nitrogen.
- an inert atmosphere such as nitrogen.
- approximately equimolar proportions of the two are employed; if an excess of either is present, it should typically be no more than about 5%.
- solvents may be employed, they generally offer no particular advantage adn therefore are not preferred.
- cyclic aminoalkylsilane compositions of this invention are useful as adhesion promoters in RTV compositions.
- another aspect of the invention is a method for improving adhesion to a substrate of such a composition comprising a polyalkoxyterminated polydiorganolsiloxane (silicone) and a catalytic amount of a curing catalyst, said method comprising incorporating therein an effective amount, typically about 0.1-5.0 parts per 100 parts of said polyalkoxysilyl-terminated polydiorganosiloxane, of said cyclic aminoalkysilane composition.
- Still another aspect of the invention is RTV compositions comprising (A) at least one polyalkoxy-terminated silicone, (B) a catalytic amount of a curing catalyst, and (C) an amount effective to enhance adhesion to a substrate of said cyclic aminoalkylsilane.
- the polyalkyoxysilyl-terminated silicones useful as component A may be represented by the formula ##STR4## wherein R 4 is an unsubstituted or substituted hydrocarbon radical containing from 1 to about 13 carbon atoms, R 5 is an alkyl, alkoxyalkyl, acylalkyl, acyloxyalkyl or cyanoalkyl radical containing from about 1 to about 8 carbon atoms or an aralkyl radical containing from . .1.!..Iadd.7 .Iaddend. to about 14 carbon atoms, each R 6 is independently an unsubstituted or substituted hydrocarbon radical containing about 1-13 carbon atoms, a is 0 or 1 and m is in the range of about 5-5000.
- R 4 and R 6 radicals are methyl, ethyl, phenyl, tfifiuoropropyl and vinyl.
- Alkyl radicals having up to about 4 carbon atoms and especially methyl radicals are preferred.
- R 5 may be alkyl or the designated substituted alkyl radicals containing aryl, ethyl, ester, ketone or cyano substituents; it is also most often C 1-4 alkyl and especially methyl.
- the value of a is 0 or 1 and most often 1.
- Component A may be prepared in situ in the RTV composition by the reaction of a silanol-terminated silicone and, as an endcapping reagent, a polyalkoxysilane such as methyltrimethoxysilane, in accordance with U.S. Pat. No. 4,395,526. It may also be previously formed by the same reaction, most often in the presence of a catalyst as disclosed, for example, in U.S. Pat. No. 4,515,932 and copending, commonly owned application Ser. No. 225,992, filed Jul. 29, 1988. The time of its formation is not critical for the purposes of this invention, although it is frequently preferred to employ a previously formed polyalkoxylsilyl-terminated silicone.
- Component B the curing catalyst
- the catalyst may be any of the metal-containing catalysts known in the art. As previously noted, these are usually aluminum, titanium or tin compounds.
- the catalyst is an organotin complex of the formula ##STR5## wherein R 7 is an unsubstituted or substituted hydrocarbon radical containing from 1 to about 18 carbon atoms and each of R 8 , R 9 and R 10 is independently hydrogen, R 7 , Si(R 7 ) 3 , acyl or nitrile.
- Component C the cyclic aminoalkylsilane composition of the present invention, is employed in the RTV composition as an adhesion promoter. Its action as such is frequently optimized if it is employed in combination with (D) a cyanoalkyltrialkoxysilane, most often 2-cyanoethyltrimethoxysilane (hereinafter “CETMS”) or 3-cyanopropyltrimethoxysilane, which acts as a synergist therefor.
- CETMS 2-cyanoethyltrimethoxysilane
- 3-cyanopropyltrimethoxysilane which acts as a synergist therefor.
- Components B and C are present in the RTV compositions of this invention in effective proportions to serve as catalysts and adhesion promoters, respectively.
- component B and C are employed per 100 pans of component A.
- component D is usually present in the amount of about 0.1-5.0 parts per 100 parts of component A.
- the RTV compositions of the invention may also contain other constituents in common use in such compositions, including curing catalyst accelerators, scavengers for hydroxy species, plasticizers, pigments and fillers.
- curing catalyst accelerators including curing catalyst accelerators, scavengers for hydroxy species, plasticizers, pigments and fillers.
- scavengers for hydroxy species including curing catalyst accelerators, scavengers for hydroxy species, plasticizers, pigments and fillers.
- at least one of the following may be present, all proportions being per 100 parts of component A:
- R 4-5 and a are as previously defined;
- Components E and F are often particularly preferred other constituents. Their presence contributes to the shelf stability of the RTV composition in the absence of moisture and its rapidity of cure in the presence of moisture.
- Suitable plasticizers useful as component G include trialkylsilyl-terminated polydiorganosiloxanes of the formula ##STR7## wherein R 6 is as previously defined and p is in the range of about 25-5000.
- component H the filler
- component H the filler
- Suitable fillers include reinforcing materials such as silica aerogel, fumed silica, precipitated silica, glass fibers, titanium dioxide, zirconium silicate, iron oxide, calcium carbonate, diatomaceous earth and carbon black, and extending materials such as ground quartz and polyvinyl chloride, as well as mixtures thereof. It is frequently advantageous to pretreat a silica filler with an activating agent such as octamethylcyclotetrasiloxane.
- Suitable accelerators are disclosed for example, in the aformentioned U.S. Pat. No. 4,517,337.
- compositions of the present invention is illustrated by the following examples. Parts are by weight. All RTV compositions were prepared by conventional high-shear mixing techniques in a nitrogen atmosphere, under the equivalent of "dry box” conditions. Viscosities are Brookfield viscosities at 25° C.
- An RTV composition was prepared by initially blending 100 parts of a polymethoxysilyl-terminated polydimethylsiloxane having a viscosity of 300 poises, 0.68 part of methyltrimethoxysilane, 16 parts of octmethylcycolotetrasiloxane-treated fumed silica and 23 parts of a trimethylsilyl-terminated polydimethylsiloxane, and subsequently adding 0.42 part of dibutyltin bis(acetylacetonate), 0.28 part of acetylacetone, 0.35 part of methyltrimethoxylsilane, 1.0 part of CETMS and 0.7 part of the product of Example 1. Adhesion-in-peel on unprimned aluminum was determined according to ASTM test method C794 after 7 days of cure at 50% relative humidity, and are reported in millipascals.
- Control C a composition prepared like Control B, substituting 0.7 part of glycidoxypropyltrimethoxysilane for the isocyanatopropyltrimethoxysilane.
- Example 1 gave an adhesion value of 165.5 millipascals, while each control gave a value less than 35 millipascals.
Abstract
Description
(R.sup.4).sub.a Si(OR.sup.5).sub.4--a (VII)
Claims (14)
. .(R.sup.4).sub.a Si(OR.sup.5).!. (.Iadd.R.sup.4).sub.a Si(OR.sup.5).sub.4-a .Iaddend. (VII)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/376,562 USRE35223E (en) | 1987-07-06 | 1995-01-23 | Cyclic aminoalkylsilanes and their use as adhesion promoters in room temperature vulcanizable polydiorganosiloxane compositions |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/070,009 US4794192A (en) | 1987-07-06 | 1987-07-06 | Cyclic aminoalkylsilanes and their use as adhesion promoters in room temperature vulcanizable polydiorganosiloxane compositions |
US07/234,730 US4855351A (en) | 1987-07-06 | 1988-08-22 | Cyclic aminoalkylsilanes and their use as adhesion promoters in room temperature vulcanizable polydiorganosiloxane compositions |
US08/376,562 USRE35223E (en) | 1987-07-06 | 1995-01-23 | Cyclic aminoalkylsilanes and their use as adhesion promoters in room temperature vulcanizable polydiorganosiloxane compositions |
Related Parent Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US07/070,009 Division US4794192A (en) | 1987-07-06 | 1987-07-06 | Cyclic aminoalkylsilanes and their use as adhesion promoters in room temperature vulcanizable polydiorganosiloxane compositions |
US07/234,730 Reissue US4855351A (en) | 1987-07-06 | 1988-08-22 | Cyclic aminoalkylsilanes and their use as adhesion promoters in room temperature vulcanizable polydiorganosiloxane compositions |
Publications (1)
Publication Number | Publication Date |
---|---|
USRE35223E true USRE35223E (en) | 1996-04-30 |
Family
ID=22092556
Family Applications (4)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US07/070,009 Ceased US4794192A (en) | 1987-07-06 | 1987-07-06 | Cyclic aminoalkylsilanes and their use as adhesion promoters in room temperature vulcanizable polydiorganosiloxane compositions |
US07/234,730 Ceased US4855351A (en) | 1987-07-06 | 1988-08-22 | Cyclic aminoalkylsilanes and their use as adhesion promoters in room temperature vulcanizable polydiorganosiloxane compositions |
US08/376,996 Expired - Lifetime USRE35178E (en) | 1987-07-06 | 1995-01-23 | Cyclic aminoalkylsilanes and their use as adhesion promoters in room temperature vulcanizable polydiorganosiloxane compositions |
US08/376,562 Expired - Lifetime USRE35223E (en) | 1987-07-06 | 1995-01-23 | Cyclic aminoalkylsilanes and their use as adhesion promoters in room temperature vulcanizable polydiorganosiloxane compositions |
Family Applications Before (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US07/070,009 Ceased US4794192A (en) | 1987-07-06 | 1987-07-06 | Cyclic aminoalkylsilanes and their use as adhesion promoters in room temperature vulcanizable polydiorganosiloxane compositions |
US07/234,730 Ceased US4855351A (en) | 1987-07-06 | 1988-08-22 | Cyclic aminoalkylsilanes and their use as adhesion promoters in room temperature vulcanizable polydiorganosiloxane compositions |
US08/376,996 Expired - Lifetime USRE35178E (en) | 1987-07-06 | 1995-01-23 | Cyclic aminoalkylsilanes and their use as adhesion promoters in room temperature vulcanizable polydiorganosiloxane compositions |
Country Status (3)
Country | Link |
---|---|
US (4) | US4794192A (en) |
JP (1) | JPS6461488A (en) |
CA (1) | CA1315798C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6310170B1 (en) * | 1999-08-17 | 2001-10-30 | Ck Witco Corporation | Compositions of silylated polymer and aminosilane adhesion promoters |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4794192A (en) * | 1987-07-06 | 1988-12-27 | General Electric Company | Cyclic aminoalkylsilanes and their use as adhesion promoters in room temperature vulcanizable polydiorganosiloxane compositions |
US5622782A (en) * | 1993-04-27 | 1997-04-22 | Gould Inc. | Foil with adhesion promoting layer derived from silane mixture |
US5446180A (en) * | 1993-12-28 | 1995-08-29 | Dow Corning Asia Ltd. | Compounds containing 1-aza-3-oxa-4-silacyclohex-1-enyl groups, and tautomers of said compounds |
US5567752A (en) * | 1995-02-27 | 1996-10-22 | General Electric Company | Silicon- and nitrogen- containing adhesion promotors and compositions containing them |
US6342280B1 (en) | 1998-06-23 | 2002-01-29 | Nextec Applications, Inc. | Products of and methods for improving adhesion between substrate and polymer layers |
US6416613B1 (en) | 1998-06-23 | 2002-07-09 | Nextec Applications, Inc. | Products of and method for improving adhesion between substrate and polymer layers |
US6262188B1 (en) | 1998-12-23 | 2001-07-17 | General Electric Company | Functionalized MQ resin as an adhesion enhancing additive |
US6905637B2 (en) * | 2001-01-18 | 2005-06-14 | General Electric Company | Electrically conductive thermoset composition, method for the preparation thereof, and articles derived therefrom |
US6878782B2 (en) * | 1999-12-01 | 2005-04-12 | General Electric | Thermoset composition, method, and article |
US7235192B2 (en) * | 1999-12-01 | 2007-06-26 | General Electric Company | Capped poly(arylene ether) composition and method |
US20030215588A1 (en) * | 2002-04-09 | 2003-11-20 | Yeager Gary William | Thermoset composition, method, and article |
ATE498648T1 (en) * | 2002-10-11 | 2011-03-15 | Univ Connecticut | MIXTURES OF AMORPHIC AND SEMICRYSTALLINE POLYMERS WITH SHAPE MEMORY PROPERTIES |
WO2004094494A2 (en) | 2003-04-21 | 2004-11-04 | Rynel, Inc. | Apparatus and methods for the attachment of materials to polyurethane foam, and articles made using them |
JP2010215715A (en) * | 2009-03-13 | 2010-09-30 | Shin-Etsu Chemical Co Ltd | Adhesion promoter and curable resin composition |
JP5835116B2 (en) * | 2012-06-15 | 2015-12-24 | 信越化学工業株式会社 | Organosilicon compound having amino group and protected hydroxyl group and method for producing the same |
CA3070493A1 (en) | 2017-07-21 | 2019-01-24 | Henkel Ag & Co. Kgaa | Method for preparing silicon-containing heterocycles |
PL3655452T3 (en) | 2017-07-21 | 2021-11-22 | Henkel Ag & Co. Kgaa | Silylated polyurethanes and methods for preparing thereof |
WO2019107196A1 (en) | 2017-11-30 | 2019-06-06 | ダウ・東レ株式会社 | Curable silicone rubber composition |
JP6939717B2 (en) * | 2018-06-20 | 2021-09-22 | 信越化学工業株式会社 | Cyclic aminoorganoxysilane compound and its production method |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4358575A (en) * | 1981-12-16 | 1982-11-09 | General Electric Company Silicone Products Business Division | Self-bonding one-component RTV silicone rubber compositions |
US4503179A (en) * | 1981-02-13 | 1985-03-05 | Daikin Kogyo Co., Ltd. | Aqueous fluorine-containing rubber coating composition and article coated therewith |
US4794192A (en) * | 1987-07-06 | 1988-12-27 | General Electric Company | Cyclic aminoalkylsilanes and their use as adhesion promoters in room temperature vulcanizable polydiorganosiloxane compositions |
Family Cites Families (9)
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US2946701A (en) * | 1957-11-12 | 1960-07-26 | Dow Corning | Method of treating glass with epoxysilanes and their epoxy-amine adducts, and the articles made thereby |
US3220878A (en) * | 1962-10-08 | 1965-11-30 | Union Carbide Corp | Wear- and stain-resistant coated articles |
US3387016A (en) * | 1963-09-20 | 1968-06-04 | Wacker Chemie Gmbh | Aminoorganosilanes |
US3334121A (en) * | 1963-10-03 | 1967-08-01 | Union Carbide Corp | Amino-hydroxy fluorosilanes |
DE1545800C3 (en) * | 1965-04-03 | 1973-12-13 | Bayer Ag, 5090 Leverkusen | Process for the preparation of 4 alkyl 2,2 dimethyl 2 silamorpholinen |
GB1161403A (en) * | 1965-08-27 | 1969-08-13 | Plessey Co Ltd | Improvements in or relating to Electric Switches |
DE1694162A1 (en) * | 1967-06-27 | 1971-06-09 | Bayer Ag | Process for the production of foams containing urethane groups |
DE2032186A1 (en) * | 1970-06-30 | 1972-01-13 | Bayer | Process for the production of foams containing urethane groups with the aid of modified silamorpholines |
FR2273548A1 (en) * | 1974-06-07 | 1976-01-02 | Fourtillan Jean Bernard | 2,8-Dioxa-1-sila-5-aza cyclooctane deriv. - hypocholesterolemic agent with lipido-protecting activity on the arterial wall |
-
1987
- 1987-07-06 US US07/070,009 patent/US4794192A/en not_active Ceased
-
1988
- 1988-06-16 CA CA000569670A patent/CA1315798C/en not_active Expired - Fee Related
- 1988-07-01 JP JP63162723A patent/JPS6461488A/en active Granted
- 1988-08-22 US US07/234,730 patent/US4855351A/en not_active Ceased
-
1995
- 1995-01-23 US US08/376,996 patent/USRE35178E/en not_active Expired - Lifetime
- 1995-01-23 US US08/376,562 patent/USRE35223E/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4503179A (en) * | 1981-02-13 | 1985-03-05 | Daikin Kogyo Co., Ltd. | Aqueous fluorine-containing rubber coating composition and article coated therewith |
US4358575A (en) * | 1981-12-16 | 1982-11-09 | General Electric Company Silicone Products Business Division | Self-bonding one-component RTV silicone rubber compositions |
US4794192A (en) * | 1987-07-06 | 1988-12-27 | General Electric Company | Cyclic aminoalkylsilanes and their use as adhesion promoters in room temperature vulcanizable polydiorganosiloxane compositions |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6310170B1 (en) * | 1999-08-17 | 2001-10-30 | Ck Witco Corporation | Compositions of silylated polymer and aminosilane adhesion promoters |
Also Published As
Publication number | Publication date |
---|---|
USRE35178E (en) | 1996-03-12 |
US4794192A (en) | 1988-12-27 |
JPS6461488A (en) | 1989-03-08 |
CA1315798C (en) | 1993-04-06 |
US4855351A (en) | 1989-08-08 |
JPH0532397B2 (en) | 1993-05-14 |
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