US3313762A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Organopolysiloxane elastomers containing peroxy carbonate curing agents
Assignee: General Electric Co
•
Filing: 1963-08-29
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Granted: 1967-04-11
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Expires: 1983-08-29
Abstract
No abstract record available.
Inventors
- 👤 Charles W Pfeifer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:39
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/14
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
94 words
AN ORGANOPOLYSILOXANE COMPOSTION COMPRISING (1) 100 PARTS OF AN ORGANOPOLYSILOXANE POLYMER CONVERTIBLE TO THE CURED, SOLID, ELASTIC STATE HAVING A VISCOSITY OF AT LEAST 100,000 CENTIPOISES AT 25*C. OF THE FORMULA, (R'')A-SI-O(4-A/2) (2) 10 TO 300 PARTS OF FILLER, AND (3) 0.001 TO 10 PARTS OF A PEROXIDE HAVING THE FORMULA, (R)3-C-O-O-COO-R WHERE R IS A MEMBER SELECTED FROM THE CLASS CONSISTING OF MONOVALENT HYDROCARBON RADICALS, HALOGENATED MONOVALENT HYDROCARBON RADICALS, AND CYANOALKYL RADICALS, R IS A MONOVALENT ALKYL RADICAL HAVING UP TO 8 CARBON ATOMS, AND A IS EQUAL TO 1.95 TO 2.01, INCLUSIVE.
Claim 2
Dependent Claim
94 words
AN ORGANOPOLYSILOXANE COMPOSTION COMPRISING (1) 100 PARTS OF AN ORGANOPOLYSILOXANE POLYMER CONVERTIBLE TO THE CURED, SOLID, ELASTIC STATE HAVING A VISCOSITY OF AT LEAST 100,000 CENTIPOISES AT 25*C. OF THE FORMULA, (R'')A-SI-O(4-A/2) (2) 10 TO 300 PARTS OF FILLER, AND (3) 0.001 TO 10 PARTS OF A PEROXIDE HAVING THE FORMULA, (R)3-C-O-O-COO-R WHERE R IS A MEMBER SELECTED FROM THE CLASS CONSISTING OF MONOVALENT HYDROCARBON RADICALS, HALOGENATED MONOVALENT HYDROCARBON RADICALS, AND CYANOALKYL RADICALS, R IS A MONOVALENT ALKYL RADICAL HAVING UP TO 8 CARBON ATOMS, AND A IS EQUAL TO 1.95 TO 2.01, INCLUSIVE.
Claim 3
Dependent Claim
15 words
A COMPOSITION IN ACCORDANCE WITH CLAIM 1 IN WHICH THE FILLER IS A SILICA FILLER.
References Cited (Backward Citations)
US2374789A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-04-10 | 1970-10-10 | 1971-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-10 | 1974-10-10 | 1975-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-10 | 1978-10-10 | 1979-04-11 | $7700.00 | Window Closed / Lapsed |