US3883609A
Expired / Lapsed
US
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Synergistic vulcanizates of poly-carboranylenesiloxane polymers
Assignee: Olin Corp
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Filing: 1973-10-01
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Granted: 1975-05-13
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Expires: 1993-10-01
Abstract
Abstract A synergistic vulcanizate is prepared by covulcanizing polycarboranylenesiloxane polymers having recurring structural units of the following formulas:
Inventors
- 👤 Sr Trescott B Larchar
- 👤 Robert N Scott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:37
CPC Classifications
C; C08; C08L; C08L83/00; C08L83/14
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
20 words
A VULCANIZATE OF A MIXTURE OF POLYCARBORANYLENESILOXANE POLYMERS A AND B SAID POLYMERS HAVING RECURRING STRUCTURAL UNITS OF THE FORMULAS:
Claim 2
Dependent Claim
20 words
A VULCANIZATE OF A MIXTURE OF POLYCARBORANYLENESILOXANE POLYMERS A AND B SAID POLYMERS HAVING RECURRING STRUCTURAL UNITS OF THE FORMULAS:
Claim 3
Dependent Claim
24 words
The vulcanizate of claim 1 wherein about 1:10 to about 1:2.5 parts of polymer B to parts of polymer A by weight are used.
Claim 4
Dependent Claim
21 words
The vulcanizate of claim 1 wherein about 1:5 parts of polymer B to parts of polymer A by weight are used.
Claim 5
Dependent Claim
33 words
The vulcanizate of claim 1 wherein the molecular weight of polymer A is from about 16,000 to about 120,000 and the molecular weight of polymer B is from about 8,000 to about 20,000.
Claim 6
Dependent Claim
19 words
The vulcanizate of claim 4 wherein said carborane structure -CB10H10C- in polymers A and B is the meta structure.
Claim 7
Dependent Claim
24 words
The vulcanizate of claim 5 wherein about 1:10 to about 1:2.5 parts of polymer B to parts of polymer A by weight are used.
Claim 8
Dependent Claim
21 words
The vulcanizate of claim 6 wherein about 1:5 parts of polymer B to parts of polymer A by weight are used.
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) | 1978-05-12 | 1978-11-11 | 1979-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-12 | 1982-11-11 | 1983-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-12 | 1986-11-11 | 1987-05-13 | $7700.00 | Window Closed / Lapsed |