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US4013710A
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Liquid vinylidene-terminated polymers
Assignee: Goodrich Corp
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Filing: 1975-06-11
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Granted: 1977-03-22
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Expires: 1995-06-11
Abstract
Abstract Liquid vinylidene (CH 2 =C<) terminated polymers are prepared by the reaction of a (1) liquid polymer having a terminal functional group selected from the group consisting of carboxyl, hydroxyl, mercaptan, amine and epoxy and (2) a compound containing both an epoxy group ##STR1## and a vinylidene group. The reaction can be catalyzed using a base. The polymers cure readily to solid elastomers which are useful as sealants, caulks, potting compounds, coatings and the like. This is a division of application Ser. No. 292,926, filed Sept. 28, 1972, now U.S. Pat. No. 3,910,992.
Inventors
- 👤 Douglas E. Skillicorn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:02
CPC Classifications
C; C08; C08F; C08F8/00; C08C; C08C19/00; C08C19/30; C08C19/34; C08C19/36; C08G; C08G85/00
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
77 words
A liquid vinylidene-terminated polymer having a molecular weight of from about 1000 to about 20,000 of the structure ##STR18## wherein B is a polymeric backbone of carbon-carbon linkages derived from polymerized units of dienes containing 4 to about 8 carbon atoms interpolymerized with vinyl nitriles; Z is selected from the group consisting of --O--, --S--, --NH--, ##STR19## and --O--CH 2 --CH 2 --; and R is hydrogen or an alkyl radical containing 1 to 4 carbon atoms.
Claim 2
Dependent Claim
77 words
A liquid vinylidene-terminated polymer having a molecular weight of from about 1000 to about 20,000 of the structure ##STR18## wherein B is a polymeric backbone of carbon-carbon linkages derived from polymerized units of dienes containing 4 to about 8 carbon atoms interpolymerized with vinyl nitriles; Z is selected from the group consisting of --O--, --S--, --NH--, ##STR19## and --O--CH 2 --CH 2 --; and R is hydrogen or an alkyl radical containing 1 to 4 carbon atoms.
Claim 3
Dependent Claim
20 words
A polymer of claim 1 wherein B consists of polymerized units of butadiene and acrylonitrile monomers and Z is ##STR20##
Claim 4
Dependent Claim
28 words
A liquid vinylidene-terminated polymer of claim 1 vulcanized using a curative selected from the group consisting of dithiols, polythiols, primary and secondary amines, and primary and secondary polyamines.
Claim 5
Dependent Claim
24 words
A polymer of claim 2 wherein the polymer has a bulk viscosity at 27° C. of from about 5000 centipoises to about 2,000,000 centipoises.
Claim 6
Dependent Claim
30 words
A polymer of claim 4 wherein the structure R is hydrogen and the polymer has a bulk viscosity at 27° C. of from about 10,000 centipoises to about 400,000 centipoises.
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) | 1980-03-21 | 1980-09-20 | 1981-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-21 | 1984-09-20 | 1985-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-21 | 1988-09-20 | 1989-03-22 | $7700.00 | Window Closed / Lapsed |