US4424157A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silicon containing lactams
Assignee: General Electric Co
•
Filing: 1982-01-11
•
Granted: 1984-01-03
•
Expires: 2002-01-11
Abstract
Abstract Substantially silanol-free, alkoxy functional RTV silicone rubber composition. The silanol and alkoxy groups in the composition are scavenged by the use of scavenging leaving groups which are present either in the cross-linking agent or in a separate compound. The scavenging leaving group in the instant composition is a heterocyclic amide functional group.
Inventors
- 👤 Rack H. Chung
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:25
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/10; C07F7/18; C07F7/1804; Y; Y10; Y10S; Y10S528/00; Y10S528/901
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
118 words
A compound having the formula ##STR37## where R is a C.sub.(1-8) aliphatic organic radical selected from the group consisting of alkyl, alkylether, alkylester, alkylketone, and alkylcyano or a C.sub.(7-13) aralkyl radical, R 1 is a C.sub.(1-13) monovalent hydrocarbon radical, Y is a ##STR38## radical, where R 2 and R 3 are selected from the group consisting of hydrogen, C.sub.(1-12) alkyl, C.sub.(1-12) alkenyl, C.sub.(1-12) alkylester, C.sub.(1-12) alkylether, C.sub.(6-12) aryl, C.sub.(7-12) alkaryl, and C.sub.(7-12) aralkyl radicals, n is an integer that varies from 2 to 4 and 6, 7, 8, a is an integer equal to 1 or 2, b is a whole number equal to 0 or 1, and the sum of a+b is equal to 1 or 2.
Claim 2
Dependent Claim
118 words
A compound having the formula ##STR37## where R is a C.sub.(1-8) aliphatic organic radical selected from the group consisting of alkyl, alkylether, alkylester, alkylketone, and alkylcyano or a C.sub.(7-13) aralkyl radical, R 1 is a C.sub.(1-13) monovalent hydrocarbon radical, Y is a ##STR38## radical, where R 2 and R 3 are selected from the group consisting of hydrogen, C.sub.(1-12) alkyl, C.sub.(1-12) alkenyl, C.sub.(1-12) alkylester, C.sub.(1-12) alkylether, C.sub.(6-12) aryl, C.sub.(7-12) alkaryl, and C.sub.(7-12) aralkyl radicals, n is an integer that varies from 2 to 4 and 6, 7, 8, a is an integer equal to 1 or 2, b is a whole number equal to 0 or 1, and the sum of a+b is equal to 1 or 2.
Claim 3
Dependent Claim
12 words
A compound of claim 1, wherein R and R 1 are methyl.
Claim 4
Dependent Claim
20 words
A compound of claim 2, wherein R 2 , R 3 are hydrogen and n varies from 2 to 4.
Claim 5
Dependent Claim
20 words
A compound of claim 2, wherein R 2 , R 3 are hydrogen and n varies from 6 to 8.
References Cited (Backward Citations)
US2607792A
Cited
US2876234A
Cited
US3127363A
Cited
US3133891A
Cited
US3035016A
Cited
US3065194A
Cited
USRE29760E
Cited
US3122522A
Cited
US3161614A
Cited
NL6501494A
Cited
NL6611517A
Cited
US3334067A
Cited
US3542901A
Cited
US3689454A
Cited
US3779986A
Cited
US4180642A
Cited
US4248993A
Cited
US4273698A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-01-02 | 1987-07-04 | 1988-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-01-02 | 1991-07-04 | 1992-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-01-02 | 1995-07-04 | 1996-01-03 | $7700.00 | Window Closed / Lapsed |