US5120812A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silicone polymers
Assignee: Siltech Corp
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Filing: 1990-10-09
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Granted: 1992-06-09
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Expires: 2010-10-09
Abstract
Abstract The present invention provides a novel vinyl silicone monomer which contain urethane functional groups. These materials are used as an intermediates in the preparation of polymers. The vinyl reactive silicone urethane intermediates are prepared by the reaction of hydroxy containing silicone compounds with Benzene-1-(1-isocyanato-1-methylethyl)-3-(1-methylethenyl).
Inventors
- 👤 Anthony J. O'Lenick, Jr.
- 👤 Jeff K. Parkinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:55
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/81; C08G18/8108; C08G18/28; C08G18/40; C08G18/61; C08G77/00; C08G77/04; C08G77/38; C08G77/382; C08G77/388; C08G77/42; C08G77/46
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
A compound prepared by the reaction of (a) a silicone polymer conforming to the following structure; ##STR19## d is an integer from 0 to 200; e is an integer from 0 to 200; f is an integer from 1 to 200; R 8 is selected from the group consisting of --(CH 2 ) n CH 3 and phenyl; n is an integer from 0 to 10; R 9 is --(CH 2 ) 3 --(OCH 2 CH 2 )x--(OCH 2 CH(CH 3 ))y--(OCH 2 CH 2 )z--OH; x, y and z are integers and are independently selected from 0 to 20; and (b) an isocynate conforming to the following structure; ##STR20## R is CH 3 .
Claim 2
Dependent Claim
115 words
A compound prepared by the reaction of (a) a silicone polymer conforming to the following structure; ##STR19## d is an integer from 0 to 200; e is an integer from 0 to 200; f is an integer from 1 to 200; R 8 is selected from the group consisting of --(CH 2 ) n CH 3 and phenyl; n is an integer from 0 to 10; R 9 is --(CH 2 ) 3 --(OCH 2 CH 2 )x--(OCH 2 CH(CH 3 ))y--(OCH 2 CH 2 )z--OH; x, y and z are integers and are independently selected from 0 to 20; and (b) an isocynate conforming to the following structure; ##STR20## R is CH 3 .
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) | 1995-06-09 | 1995-12-09 | 1996-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-06-09 | 1999-12-09 | 2000-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-06-09 | 2003-12-09 | 2004-06-09 | $7700.00 | Window Closed / Lapsed |