US4965333A
Expired / Lapsed
US
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RTV organopolysiloxane compositions
Assignee: Shin-Etsu Chemical Co Ltd
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Filing: 1988-12-20
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Granted: 1990-10-23
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Expires: 2008-12-20
Abstract
Abstract A room temperature vulcanizable organopolysiloxane composition is provided, comprising (a) a diorganopolysiloxane blocked with a silanol, dialkoxy or trialkoxy radical at both ends of the molecular chain thereof, (b) a novel organic silicon compound of the general formula: <IMAGE> (1) wherein R1 is hydrogen or a monovalent hydrocarbon radical having 1 to 8 carbon atoms, <IMAGE> m and l are independently equal to 0, 1 or 2, and n is an integer in the range of 2 to 8, and (c) a curing catalyst. The composition may further contain (d) an organoalkoxysilane.
Inventors
- 👤 Yoshio Inouye
- 👤 Takeo Inoue
- 👤 Koji Yokoo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:45
CPC Classifications
C; C09; C09D; C09D183/00; C09D183/04; C09D183/06; C08; C08K; C08K5/00; C08K5/54; C08K5/541; C08K5/5425; C08L; C08L83/00; C08L83/04; Y; Y10; Y10S; Y10S528/00; Y10S528/901
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
81 words
A room temperature vulcanizable organopolysiloxane composition comprising: (a) a diorganopolysiloxane blocked with a silanol, dialkoxy or trialkoxy radical at both ends of the molecular chain thereof, (b) an oragnic silicon compound of the general formula: ##STR11## wherein R 1 is hydrogen or a monovalent hydrocarbon radical having 1 to 8 carbon atoms, ##STR12## m and l are independently equal to 0, 1 or 2, and n is an integer in the range of 2 to 8, and (c) a curing catalyst.
Claim 2
Dependent Claim
81 words
A room temperature vulcanizable organopolysiloxane composition comprising: (a) a diorganopolysiloxane blocked with a silanol, dialkoxy or trialkoxy radical at both ends of the molecular chain thereof, (b) an oragnic silicon compound of the general formula: ##STR11## wherein R 1 is hydrogen or a monovalent hydrocarbon radical having 1 to 8 carbon atoms, ##STR12## m and l are independently equal to 0, 1 or 2, and n is an integer in the range of 2 to 8, and (c) a curing catalyst.
Claim 3
Dependent Claim
46 words
The composition of claim 1 which contains (a) 100 parts by weight of the diorganopolysiloxane, (b) about 0.1 to about 10 parts by weight of the organic silicon compound of formula (1), and (c) about 0.01 to about 5 parts by weight of the curing catalyst.
Claim 4
Dependent Claim
72 words
The composition of claim 1 or 2 which further comprises (d) up to about 30 parts by weight of an organoalkoxysilane of the general formula: R.sup.3.sub.4-b Si(OR.sup.4).sub.b ( 2) wherein R 3 is a monovalent hydrocarbon radical, R 4 is an alkyl radical or an alkyl radical having an alkoxy substituent, and b is equal to 3 or 4, or a partial hydrolyzate thereof per 100 parts by weight of diorganopolysiloxane (a).
Claim 5
Dependent Claim
16 words
The composition of claim 1 wherein the organic silicon compound of the component (b) is ##STR13##
Claim 6
Dependent Claim
16 words
The composition of claim 1 wherein the organic silicon compound of the component (b) is ##STR14##
Claim 7
Dependent Claim
16 words
The composition of claim 1 wherein the organic silicon compound of the component (b) is ##STR15##
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) | 1993-10-22 | 1994-04-23 | 1994-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-10-22 | 1998-04-23 | 1998-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-10-22 | 2002-04-23 | 2002-10-23 | $7700.00 | Window Closed / Lapsed |