US4129713A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid vinylidene terminated polymers
Assignee: Goodrich Corp
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Filing: 1976-11-03
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Granted: 1978-12-12
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Expires: 1996-11-03
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.
Inventors
- 👤 Douglas E. Skillicorn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:52
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
132 words
A liquid vinylidene-terminated polymer having a molecular weight of from about 1000 to about 20,000 as measured using a Mechrolab Vapor Pressure Osmometer of the structure ##STR18## wherein B is a polymeric backbone of carbon-carbon linkages derived from interpolymerized units of one or more acrylates of the formula ##STR19## wherein R' is --H, --CH 3 , or --C 2 H 5 , and R" is selected from the group consisting of an alkyl radical containing 1 to 18 carbon atoms, an alkoxyalkyl radical, an alkylthioalkyl, and a cyanoalkyl radical each containing 2 to about 12 carbon atoms; A is a bivalent radical selected from the group consisting of ##STR20## --CH 2 --O--CH 2 --, and --CH 2 --O--; and R is hydrogen or an alkyl radical containing 1 to 4 carbon atoms.
Claim 2
Dependent Claim
132 words
A liquid vinylidene-terminated polymer having a molecular weight of from about 1000 to about 20,000 as measured using a Mechrolab Vapor Pressure Osmometer of the structure ##STR18## wherein B is a polymeric backbone of carbon-carbon linkages derived from interpolymerized units of one or more acrylates of the formula ##STR19## wherein R' is --H, --CH 3 , or --C 2 H 5 , and R" is selected from the group consisting of an alkyl radical containing 1 to 18 carbon atoms, an alkoxyalkyl radical, an alkylthioalkyl, and a cyanoalkyl radical each containing 2 to about 12 carbon atoms; A is a bivalent radical selected from the group consisting of ##STR20## --CH 2 --O--CH 2 --, and --CH 2 --O--; and R is hydrogen or an alkyl radical containing 1 to 4 carbon atoms.
Claim 3
Dependent Claim
14 words
A polymer of claim 1 wherein B consists of polymerized units of acrylate monomers.
Claim 4
Dependent Claim
17 words
A polymer of claim 2 wherein the acrylate monomer is n-butyl acrylate and A is ##STR21## .
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
24 words
A polymer of claim 3 wherein the polymer has a bulk viscosity at 27° C. of from about 10,000 centipoises to about 400,000 centipoises.
References Cited (Backward Citations)
US3711451A
Cited
US3705882A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-12-11 | 1982-06-12 | 1982-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-12-11 | 1986-06-12 | 1986-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-12-11 | 1990-06-12 | 1990-12-12 | $7700.00 | Window Closed / Lapsed |