US3910992A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid vinylidene-terminated polymers
Assignee: Goodrich Corp
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Filing: 1972-09-28
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Granted: 1975-10-07
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Expires: 1992-09-28
Abstract
Abstract Liquid vinylidene (CH2=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 (CH2-CH-) ANGLE O 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.
Inventors
- 👤 Douglas E Skillicorn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:48
CPC Classifications
C; C08; C08C; C08C19/00; C08C19/30; C08C19/34; C08C19/36; C08F; C08F8/00; C08G; C08G85/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
18 words
A LIQUID VINYLIDENE-TERMINATED POLYMER HAVING A MOLECULAR WEIGHT OF FROM ABOUT 1,000 TO ABOUT 20,000 OF THE STRUCTURE
Claim 2
Dependent Claim
18 words
A LIQUID VINYLIDENE-TERMINATED POLYMER HAVING A MOLECULAR WEIGHT OF FROM ABOUT 1,000 TO ABOUT 20,000 OF THE STRUCTURE
Claim 3
Dependent Claim
20 words
A liquid vinylidene-terminated polymer of claim 1 having a molecular weight from about 1,000 to about 20,000 of the structure
Claim 4
Dependent Claim
19 words
A polymer of claim 2 wherein the diene monomer is 1,3-butadiene and R is hydrogen or a methyl radical.
References Cited (Backward Citations)
US3432478A
Cited
US3485732A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-10-06 | 1979-04-07 | 1979-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-06 | 1983-04-07 | 1983-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-06 | 1987-04-07 | 1987-10-07 | $7700.00 | Window Closed / Lapsed |