US3928489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for increasing the thermostability of organopolysiloxanes
Assignee: Individual
•
Filing: 1973-04-09
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Granted: 1975-12-23
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Expires: 1993-04-09
Abstract
Abstract A method of increasing the thermostability of organopolysiloxanes and compositions containing the same comprising introducing into organopolysiloxanes and compositions based on them 0.01 to 10 weight parts of a polyethynylpyridine or synergistic mixtures of 0.01 to 10 weight parts of a polyethynylpyridine with 1 to 10 weight parts of metal salts or an oxide of a metal per 100 weight parts of organopolysiloxane. The resulting thermostable organopolysiloxanes and compositions based on them find application in aviation, ship building industry, rocketry, and in other branches of the industry.
Inventors
- 👤 Alfred Anisimovich Berlin
- 👤 Roza Mikhailovna Aseeva
- 👤 Semen Markovich Mezhikovsky
- 👤 Alla Ilinichna Sherle
- 👤 Nadezhda Alexeevna Tsepalova
- 👤 Evgeny Alexandrovich Goldovsky
- 👤 Tatiana Vladimiro Zelenetskaya
- 👤 Rozalia Komalovna Fatkulina
- 👤 Alexandr Samoilovich Kuzminsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:47
CPC Classifications
C; C08; C08L; C08L83/00; C08L83/04; C08K; C08K3/00; C08K3/18; C08K3/20; C08K3/22; C08K5/00; C08K5/04; C08K5/09; C08L39/00; C08L39/04; C08L39/08; C08G; C08G77/00; C08G77/04; C08G77/14; C08G77/18; C08G77/20; C08G77/70; Y; Y10; Y10S; Y10S525/00; Y10S525/938
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
43 words
A METHOD FOR INCREASING THE THERMOSTABILITY OF ORGANOPOLYSILOXANE ELASTOMERS CONTAINING ALIPHATIC, AROMATIC, ARYLALIPHATIC OR UNSATURATED RADICALS AT THE SILICON ATOM COMPRISING MIXING TOGETHER SAID ORGANOPOLYSILOXANE AND ABOUT 0.01 TO 10 PARTS BY WEIGHT OF A POLYETHYNYLPYRIDINE PER 100 PARTS BY WEIGHT OF ORGANOPOLYSILOXANE.
Claim 2
Independent Claim
43 words
A METHOD FOR INCREASING THE THERMOSTABILITY OF ORGANOPOLYSILOXANE ELASTOMERS CONTAINING ALIPHATIC, AROMATIC, ARYLALIPHATIC OR UNSATURATED RADICALS AT THE SILICON ATOM COMPRISING MIXING TOGETHER SAID ORGANOPOLYSILOXANE AND ABOUT 0.01 TO 10 PARTS BY WEIGHT OF A POLYETHYNYLPYRIDINE PER 100 PARTS BY WEIGHT OF ORGANOPOLYSILOXANE.
Claim 3
Dependent Claim
27 words
A method for increasing the thermostability of organopolysiloxane elastomers according to claim 1, wherein said polyethynylpyridine is selected from the group consisting of poly-2-methyl-5-ethynylpyridine, poly-2-ethynylpyridine, and poly-4-ethynylpyridine.
Claim 4
Dependent Claim
20 words
A method for increasing the thermostability of organopolysiloxane elastomers according to claim 2, further comprising mixing in a reinforcing filler.
Claim 5
Dependent Claim
26 words
A method for increasing the thermostability of organopolysiloxane elastomers compositions according to claim 3, further comprising mixing in a curing agent, and curing the composition obtained.
Claim 6
Dependent Claim
49 words
A method for increasing the thermostability of organopolysiloxane elastomers according to claim 1, further comprising mixing in about 1 to 10 parts by weight of a metal salt selected from the group consisting of cerium naphthenate, lanthanum naphthenate, and ytterbium naphthenate per 100 parts by weight of said organopolysiloxane.
Claim 7
Dependent Claim
55 words
A method for increasing the thermostability of organopolysiloxane elastomers according to claim 1, further comprising mixing in a reinforcing filler, a curing agent, and 1 to 10 parts by weight of a salt of a metal selected from the group consisting of cerium naphthenate, lanthanum naphthenate, and ytterbium naphthenate, and curing the composition thus obtained.
Claim 8
Dependent Claim
45 words
A method for increasing the thermostability of organopolysiloxane elastomers according to claim 1, further comprising mixing in 1 to 10 parts by weight of a metal oxide selected from the group comprising copper oxide, barium oxide, aluminum oxide, cerium oxide, gadolinium oxide and iron oxide.
Claim 9
Dependent Claim
31 words
A method for increasing the thermostability of organopolysiloxane elastomers compositions according to claim 7, further comprising mixing in a reinforcing filler, and a curing agent, and curing the composition thus obtained.
Claim 10
Dependent Claim
31 words
A method for increasing the thermostability of organopolysiloxanes according to claim 1, wherein said organopolysiloxane is selected from the group consisting of polymethylvinylsiloxane, polydimethylsiloxane, polymethylphenylsiloxane, and polymethylvinylsiloxane having terminal trimethoxysilyl groups.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-22 | 1979-06-23 | 1979-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-22 | 1983-06-23 | 1983-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-22 | 1987-06-23 | 1987-12-23 | $7700.00 | Window Closed / Lapsed |