US3892707A
Expired / Lapsed
US
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Silicone elastomer compositions
Assignee: Shin-Etsu Chemical Co Ltd
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Filing: 1974-05-10
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Granted: 1975-07-01
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Expires: 1994-05-10
Abstract
Abstract Silicone elastomer compositions comprising (a) a diorganovinylsilyl-terminated diorganopolysiloxane, (b) an alkenyl isopropenoxysilane or product of partial hydrolysiscondensation (c) an organohydrogenpolysiloxane and (d) platinum or platinum compounds as the catalyst. They possess an excellent fluidity, and are curable at moderate temperatures. The compositions are cured on heating with the formation of strong adhesive bonding to the surface of a substrate to which they are in contact.
Inventors
- 👤 Kunio Itoh
- 👤 Naohiko Harada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:24
CPC Classifications
C; C08; C08L; C08L83/00; C08L83/04; C08K; C08K3/00; C08K3/01; C08K3/011; C08K5/00; C08K5/0008; C08K5/0025; C08K5/54; C08G; C08G77/00; C08G77/04; C08G77/12; C08G77/20
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
31 words
A SILICONE ELASTOMER COMPOSITION CONSISTING ESSENTIALLY OF (A) 100 PARTS BY WEIGHT OF DIORGANOVINYLSILY-TERMINATED DIORGANOPOLYSILOXANE HAVING A VISCOSITY OF FROM 100 TO 500,000 CS. AT 25*C, REPRESENTED BY THE GENERAL FORMULA
Claim 2
Dependent Claim
31 words
A SILICONE ELASTOMER COMPOSITION CONSISTING ESSENTIALLY OF (A) 100 PARTS BY WEIGHT OF DIORGANOVINYLSILY-TERMINATED DIORGANOPOLYSILOXANE HAVING A VISCOSITY OF FROM 100 TO 500,000 CS. AT 25*C, REPRESENTED BY THE GENERAL FORMULA
Claim 3
Dependent Claim
43 words
The silicone elastomer composition as claimed in claim 1 wherein component (b) is a vinyltriisopropenoxysilane or a product of the partial hydrolysis-condensation thereof in an amount ranging from 1 to 8 parts by weight based on 100 parts by weight of component (a).
Claim 4
Dependent Claim
38 words
The silicone elastomer composition as claimed in claim 1 further characterized in that it contains an organic peroxide in an amount of from 0.1 to 2 parts by weight based on 100 parts by weight of component (a).
Claim 5
Dependent Claim
28 words
The silicone elastomer composition as claimed in claim 3 wherein said organic peroxide is at least one selected from the group consisting of 2,4-dichlorobenzoylperoxide, tert-butylperbenzoate, di-tert-butylperoxide and 4-chlorobenzoylperoxide.
Claim 6
Dependent Claim
56 words
The silicone elastomer composition as claimed in claim 1 further characterized by that it contains a organopolysiloxane consisting of triorganosiloxy units, and SiO2 units, the ratio of triorganosiloxy units to SiO2 units being from 0.5 to 1 in an amount of 10 to 60 parts by weight based on 100 parts by weight of component (a).
Claim 7
Dependent Claim
49 words
The silicone elastomer composition as claimed in claim 5 wherein said triorganosiloxy units are composed of a combination of vinyldimethylsiloxy units and trimethylsiloxy units, the number of vinyl groups in said vinyldimethylsiloxy units being from 2.5% to 10% of the total number of organic groups in said triorganosiloxy units.
Claim 8
Dependent Claim
38 words
The silicone elastomer composition as claimed in claim 1 further characterized in that it contains an inorganic filler in an amount of from 50 to 200 parts by weight based on 100 parts by weight of component (a).
Claim 9
Dependent Claim
61 words
A silicone elastomer composition consisting essentially of (a) 100 parts by weight of dimethylvinylsilyl-terminated dimethylpolysiloxane having a viscosity of from 100 to 500,000 cs. at 25*C, (b) from 1 to 8 parts by weight of vinyltriisopropenoxysilane or a product of its partial hydrolysis-condensation, (c) an organohydrogenpolysiloxane fluid having at least two Si-H linkages in a molecule, represented by the general formula
Claim 10
Dependent Claim
61 words
A silicone elastomer composition consisting essentially of (a) 100 parts by weight of dimethylvinylsilyl-terminated dimethylpolysiloxane having a viscosity of from 100 to 500,000 cs. at 25*C, (b) from 1 to 8 parts by weight of vinyltriisopropenoxysilane or a product of its partial hydrolysis-condensation, (c) an organohydrogenpolysiloxane fluid having at least two Si-H linkages in a molecule, represented by the general formula
Claim 11
Dependent Claim
38 words
The silicon elastomer composition as claimed in claim 8 further characterized in that it contains an organic peroxide in an amount of from 0.1 to 2 parts by weight based on 100 parts by weight of component (a).
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) | 1978-06-30 | 1978-12-30 | 1979-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-30 | 1982-12-30 | 1983-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-30 | 1986-12-30 | 1987-07-01 | $7700.00 | Window Closed / Lapsed |