US3884887A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vinyl copolymers and processes for making them
Assignee: Union Carbide Corp
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Filing: 1972-07-26
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Granted: 1975-05-20
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Expires: 1992-07-26
Abstract
Abstract This invention is concerned with random copolymers of vinyl chloride and a hydroxyalkyl acrylates, which have a relatively narrow molecular weight distribution. These copolymers are particularly compatible with solvent based thermosetting or airdrying coating resins and are coreactive therewith.
Inventors
- 👤 Donald R Montgomery
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:29
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/10; C08G18/28; C08G18/40; C08G18/62; C09; C09D; C09D127/00; C09D127/02; C09D127/04; C09D127/06
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
47 words
AN UNIFORMLY RANDOM COPOLYMER HAVING A MER CONTENT OF ABOUT 70 TO 90 WEIGHT PERCENT VINYL CHLORIDE DERIVED MERS, BASED IN WEIGHT OF THE COPOLYMER, ABOUT 10 TO 30 WEIGHT PER CENT BASED ON THE WEIGGHT OF THE COPOLYMER, OF AN ESTER DERIVED MERS HAVING THE FORMULA:
Claim 2
Dependent Claim
47 words
AN UNIFORMLY RANDOM COPOLYMER HAVING A MER CONTENT OF ABOUT 70 TO 90 WEIGHT PERCENT VINYL CHLORIDE DERIVED MERS, BASED IN WEIGHT OF THE COPOLYMER, ABOUT 10 TO 30 WEIGHT PER CENT BASED ON THE WEIGGHT OF THE COPOLYMER, OF AN ESTER DERIVED MERS HAVING THE FORMULA:
Claim 3
Dependent Claim
10 words
The copolymer of claim 1 wherein the ester is hydroxypropylacrylate.
Claim 4
Dependent Claim
11 words
The copolymer of claim 2 wherein vinyl acetate is present therein.
References Cited (Backward Citations)
US3260704A
Cited
US3635914A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-19 | 1978-11-18 | 1979-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-19 | 1982-11-18 | 1983-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-19 | 1986-11-18 | 1987-05-20 | $7700.00 | Window Closed / Lapsed |