US4220748A
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Room temperature curable polysiloxane composition
Assignee: Momentive Performance Materials Japan LLC
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Filing: 1979-03-20
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Granted: 1980-09-02
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Expires: 1999-03-20
Abstract
Abstract A room temperature curable polyorganosiloxane composition comprising (A) 100 parts by weight of a silanol-terminated polydiorganosiloxane having a viscosity of 500 to 200,000 cSt measured at 25 DEG C., (B) 0.5 to 25 parts by weight of an acetoxy group-containing organic silicon compound selected from the group consisting of acetoxy group-containing silanes represented by the following formula and partially hydrolyzed products thereof: <IMAGE> wherein R1 stands for a monovalent substituted or unsubstituted hydrocarbon group, R2 is a monovalent group selected from the group consisting of alkyl groups and alkoxyalkyl groups, a is a number of 0 or 1, and b is a number of 0 or 1, and (C) 0.01 to 10 parts by weight of the reaction product of the reaction between (1) an aminoalkyl group-containing organic silicon compound selected from the group consisting of aminoalkyl group-containing silanes represented by the following formula and partially hydrolyzed products thereof: <IMAGE> wherein R3 stands for a hydrogen atom or a monovalent substituted or unsubstituted hydrocarbon group, R4 stands for a divalent hydrocarbon group, R5 stands for a monovalent substituted or unsubstituted hydrocarbon group, R6 is a monovalent group selected from the group consisting of alkyl groups and alkoxyalkyl groups, and c is a number of 0 or 1, and (2) an anhydride of a polybasic acid.
Inventors
- 👤 Mitsuyoshi Hashimoto
- 👤 Kiyoshi Hosokawa
- 👤 Bunjirou Murai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 01:45
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/54; C08G; C08G77/00; C08G77/04; C08G77/14; C08G77/16; C08G77/20; C08G77/70; Y; Y10; Y10S; Y10S528/00; Y10S528/901
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
214 words
A room temperature curable polyorganosiloxane composition consisting essentially of (A) 100 parts by weight of a silanol-terminated polydiorganosiloxane having a viscosity of 500 to 200,000 cSt measured at 25° C., (B) 0.5 to 25 parts by weight of an acetoxy group-containing organic silicon compound selected from the group consisting of acetoxy group-containing silanes having the following formula and partially hydrolyzed products thereof: ##STR7## wherein R 1 is a monovalent substituted or unsubstituted hydrocarbon group, R 2 is a monovalent group selected from the group consisting of alkyl groups and alkoxyalkyl groups, a is a number of 0 or 1, and b is a number of 0 or 1, and (C) 0.01 to 10 parts by weight of the reaction product of the reaction between (1) an aminoalkyl group-containing organic silicon compound selected from the group consisting of aminoalkyl group-containing silanes having the following formula and partially hydrolyzed products thereof: ##STR8## wherein R 3 is hydrogen or a monovalent substituted or unsubstituted hydrocarbon group, R 4 is a divalent hydrocarbon group, R 5 is a monovalent substituted or unsubstituted hydrocarbon group, R 6 is a monovalent group selected from the group consisting of alkyl groups and alkoxyalkyl groups, and c is a number of 0 or 1, and (2) an anhydride of a polycarboxylic acid.
Claim 2
Dependent Claim
214 words
A room temperature curable polyorganosiloxane composition consisting essentially of (A) 100 parts by weight of a silanol-terminated polydiorganosiloxane having a viscosity of 500 to 200,000 cSt measured at 25° C., (B) 0.5 to 25 parts by weight of an acetoxy group-containing organic silicon compound selected from the group consisting of acetoxy group-containing silanes having the following formula and partially hydrolyzed products thereof: ##STR7## wherein R 1 is a monovalent substituted or unsubstituted hydrocarbon group, R 2 is a monovalent group selected from the group consisting of alkyl groups and alkoxyalkyl groups, a is a number of 0 or 1, and b is a number of 0 or 1, and (C) 0.01 to 10 parts by weight of the reaction product of the reaction between (1) an aminoalkyl group-containing organic silicon compound selected from the group consisting of aminoalkyl group-containing silanes having the following formula and partially hydrolyzed products thereof: ##STR8## wherein R 3 is hydrogen or a monovalent substituted or unsubstituted hydrocarbon group, R 4 is a divalent hydrocarbon group, R 5 is a monovalent substituted or unsubstituted hydrocarbon group, R 6 is a monovalent group selected from the group consisting of alkyl groups and alkoxyalkyl groups, and c is a number of 0 or 1, and (2) an anhydride of a polycarboxylic acid.
Claim 3
Dependent Claim
25 words
A composition as set forth in claim 1, which further contains an effective amount of an inorganic filler for a room temperature curable polyorganosiloxane composition.
Claim 4
Dependent Claim
31 words
A composition as set forth in claim 1, which further contains an effective curing amount of a catalyst selected from the group consisting of quaternary ammonium salts and organic tin compounds.
Claim 5
Dependent Claim
38 words
A composition as set forth in claim 1 wherein the organic group of the silanol-terminated polydiorganosiloxane (A) is the same or different monovalent group selected from the group consisting of monovalent hydrocarbon groups and monovalent halogenated hydrocarbon groups.
Claim 6
Dependent Claim
32 words
A composition as set forth in claim 4 wherein the organic group of the silanol-terminated polydiorganosiloxane (A) is a monovalent hydrocarbon group selected from the group consisting of methyl, vinyl and phenyl.
Claim 7
Dependent Claim
19 words
A composition as set forth in claim 5 wherein the organic group of the silanol-terminated polydiorganosiloxane (A) is methyl.
Claim 8
Dependent Claim
44 words
A composition as set forth in claim 1 wherein the group R 1 of the component (B) is a monovalent group selected from the group consisting of alkyl having 1 to 8 carbon atoms, alkenyl group having 2 or 3 carbon atoms and phenyl.
Claim 9
Dependent Claim
19 words
A composition as set forth in claim 7 wherein the group R 1 of the component (B) is methyl.
Claim 10
Dependent Claim
46 words
A composition as set forth in claim 1 wherein the group R 2 of the component (B) is a monovalent group selected from the group consisting of alkyl having 1 to 3 carbon atoms and ethyl substituted with an alkoxy having 1 or 2 carbon atoms.
Claim 11
Dependent Claim
38 words
A composition as set forth in claim 1 wherein the group R 3 of the component (C) is a monovalent group selected from the group consisting of hydrogen atom, alkyl having 1 to 8 carbon atoms and phenyl.
Claim 12
Dependent Claim
25 words
A composition as set forth in claim 1 wherein the group R 4 of the component (C) is alkylene having 1 to 8 carbon atoms.
Claim 13
Dependent Claim
43 words
A composition as set forth in claim 1 wherein the group R 5 of the component (C) is a monovalent group selected from the group consisting of alkyl having 1 to 8 carbon atoms, alkenyl having 2 or 3 carbon atoms and phenyl.
Claim 14
Dependent Claim
19 words
A composition as set forth in claim 12 wherein the group R 5 of the component (C) is methyl.
Claim 15
Dependent Claim
41 words
A composition as set forth in claim 1 wherein the group R 6 is a monovalent group selected from the group consisting of alkyl having 1 to 3 carbon atoms and ethyl substituted with alkoxy having 1 or 2 carbon atoms.
Claim 16
Dependent Claim
36 words
A composition according to claim 1 containing from 2 to 10 parts by weight of component B and from 0.1 to 3 parts by weight of component C, per 100 parts by weight of component A.
Claim 17
Dependent Claim
34 words
A composition according to claim 1 in which said polycarboxylic acid anhydride is selected from the group consisting of maleic anhydride, fumaric anhydride, succinic anhydride, adipic anhydride, phthalic anhydride, pyromellitic anhydride and trimellitic anhydride.
Claim 18
Dependent Claim
20 words
A composition according to claim 1 in which the molar ratio of component (1) to component (2) is substantially 1:1.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-09-02 | 1984-03-03 | 1984-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-09-02 | 1988-03-03 | 1988-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-09-02 | 1992-03-03 | 1992-09-02 | $7700.00 | Window Closed / Lapsed |