US4357443A
Expired / Lapsed
US
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One package, moisture curable, organopolysiloxane compositions and method for making
Assignee: General Electric Co
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Filing: 1981-10-30
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Granted: 1982-11-02
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Expires: 2001-10-30
Abstract
Abstract One package moisture curable organopolysiloxane compositions are provided based on the use of a silanol-terminated polydiorganosiloxane, an alkoxy silane crosslinking agent and a vanadium compound as a curing catalyst. The moisture curable organopolysiloxane compositions are non-corrosive and substantially odor-free.
Inventors
- 👤 Mary A. White
- 👤 Diane V. Brezniak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:08
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/05; C08K5/057; Y; Y10; Y10S; Y10S528/00; Y10S528/901
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
104 words
One-package, room temperature vulcanizable organopolysiloxane compositions comprising by weight, (A) 100 parts of a silanol-terminated polydiorganosiloxane consisting essentially of chemically combined units of the formula, ##STR7## (B) 0.1 to 10 parts of an alkoxy silane of the formula and ##STR8## (C) an effective amount of either a V +3 to V +5 inclusive vanadium compound soluble in the room temperature vulcanizable organopolysiloxane composition, or a V +3 to V +5 inclusive vanadium compound insoluble in the room temperature vulcanizable organopolysiloxanee composition, but capable of forming soluble hydrolysis products upon contact with atmospheric moisture while in the presence of the room temperature vulcanizable organopolysiloxane composition.
Claim 2
Dependent Claim
104 words
One-package, room temperature vulcanizable organopolysiloxane compositions comprising by weight, (A) 100 parts of a silanol-terminated polydiorganosiloxane consisting essentially of chemically combined units of the formula, ##STR7## (B) 0.1 to 10 parts of an alkoxy silane of the formula and ##STR8## (C) an effective amount of either a V +3 to V +5 inclusive vanadium compound soluble in the room temperature vulcanizable organopolysiloxane composition, or a V +3 to V +5 inclusive vanadium compound insoluble in the room temperature vulcanizable organopolysiloxanee composition, but capable of forming soluble hydrolysis products upon contact with atmospheric moisture while in the presence of the room temperature vulcanizable organopolysiloxane composition.
Claim 3
Dependent Claim
38 words
A room temperature vulcanizable composition in accordance with claim 1, where the vanadium compound has the formula, VO(OR.sup.3).sub.3, where R 3 is a member selected from the class consisting of a silyl radical and a C.sub.(1-13) organic radical.
Claim 4
Dependent Claim
22 words
A room temperature vulcanizable composition in accordance with claim 1, where the vanadium compound is VO(OiC 3 H 7 ) 3 .
Claim 5
Dependent Claim
18 words
A room temperature vulcanizable composition in accordance with claim 1, where the silanol-terminated polydiorganosiloxane is a silanol-terminated polydimethylsiloxane.
Claim 6
Dependent Claim
18 words
A room temperature vulcanizable composition in accordance with claim 1, where the alkoxy silane cross-linking agent is methyltrimethoxysilane.
Claim 7
Dependent Claim
16 words
A room temperature vulcanizable organopolysiloxane composition in accordance with claim 1, reinforced with a silica filler.
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) | 1985-11-01 | 1986-05-03 | 1986-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-11-01 | 1990-05-03 | 1990-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-11-01 | 1994-05-03 | 1994-11-02 | $7700.00 | Window Closed / Lapsed |