US3882083A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Latent addition curable organopolysiloxane compositions
Assignee: General Electric Co
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Filing: 1973-11-21
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Granted: 1975-05-06
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Expires: 1993-11-21
Abstract
Abstract Addition curable organopolysiloxane compositions which are stable to premature gelation at room temperature for extended periods are provided. Said organopolysiloxane compositions comprise an olefinorganopolysiloxane, an organohydrogenpolysiloxane, a platinum catalyst, and a cure inhibiting amount of an ethylenically unsaturated isocyanurate.
Inventors
- 👤 Abe Berger
- 👤 Bruce Bertolette Hardman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:57
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3467; C08K5/3477; C08K3/00; C08K3/01; C08K3/011; C08K5/0008; C08K5/0025; C08L; C08L83/00; C08L83/04; Y; Y10; Y10S; Y10S525/00; Y10S525/925
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
18 words
A LATENT CURABLE COMPOSITION STABILIZED AGAINST PREMATURE GELATION COMPRISING: A. AN OLEFINORGANOPOLYSILOXANE HAVING UNITS OF THE STRUCTURAL FORMULA
Claim 2
Dependent Claim
18 words
A LATENT CURABLE COMPOSITION STABILIZED AGAINST PREMATURE GELATION COMPRISING: A. AN OLEFINORGANOPOLYSILOXANE HAVING UNITS OF THE STRUCTURAL FORMULA
Claim 3
Dependent Claim
63 words
The composition of claim 1 wherein R is selected from the group consisting of alkyl, cycloalkyl, aryl, aralkyl, haloalkyl, halogenated cycloalkyl, haloaryl, halogenated aralkyl, cyanoalkyl, and mixtures thereof, R'' is selected from the group consisting of alkenyl and alkynyl, and R'''' is selected from the group consisting of hydrogen, lower-alkenyl and mixtures thereof with the proviso that at least one R'''' is lower-alkenyl.
Claim 4
Dependent Claim
13 words
The composition of claim 2 wherein R is alkyl and R'' is alkenyl.
Claim 5
Dependent Claim
27 words
The composition of claim 3 wherein R is methyl, R'' is vinyl and the ethylenically unsaturated isocyanurate is selected from the group consisting of diallylisocyanurate and triallylisocyanurate.
Claim 6
Dependent Claim
15 words
The composition of claim 4 wherein the olefinorganopolysiloxane is tetramethyltetravinylcyclotetrasiloxane and the organohydrogenpolysiloxane is tetramethylcyclotetrasiloxane.
Claim 7
Dependent Claim
12 words
The composition of claim 4 wherein the ethylenically unsaturated isocyanurate is triallylisocyanurate.
Claim 8
Dependent Claim
10 words
The composition of claim 5 which includes an inorganic filler.
Claim 9
Dependent Claim
34 words
The composition of claim 4 wherein the olefinorganopolysiloxane is a vinyldimethyl stopped-polydimethylsiloxane fluid having a viscosity of about 350 centipoise and the organohydrogenpolysiloxane is a dimethylhydrogen stopped methylhydrogenpolysiloxane fluid having about 0.77 percent hydrogen.
Claim 10
Dependent Claim
10 words
The composition of claim 8 which includes an inorganic filler.
Claim 11
Dependent Claim
20 words
The composition of claim 1 wherein the olefinorganopolysiloxane is comprised of (1) a liquid vinyl chain-stopped polysiloxane having the formula
Claim 12
Dependent Claim
11 words
The composition of claim 10 wherein R3 and R4 are methyl.
Claim 13
Dependent Claim
20 words
The composition of claim 10 wherein said ethylenically unsaturated isocyanurate is selected from the group consisting of triallylisocyanurate and diallylisocyanurate.
Claim 14
Dependent Claim
20 words
The composition of claim 11 wherein the ethylenically unsaturated isocyanurate is selected from the group consisting of diallylisocyanurate and triallylisocyanurate.
Claim 15
Dependent Claim
12 words
The composition of claim 13 wherein said ethylenically unsaturated isocyanurate is triallylisocyanurate.
Claim 16
Dependent Claim
10 words
The composition of claim 14 which includes an inorganic filler.
References Cited (Backward Citations)
US3517001A
Cited
US3697473A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-05 | 1978-11-04 | 1979-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-05 | 1982-11-04 | 1983-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-05 | 1986-11-04 | 1987-05-06 | $7700.00 | Window Closed / Lapsed |