US3719649A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crosslinked chloroprene/diester polymer
Assignee: Bayer AG
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Filing: 1971-02-19
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Granted: 1973-03-06
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Expires: 1991-02-19
Abstract
Abstract A crosslinked copolymer of chloroprene and a diester of an unsaturated carboxylic acid, a composition comprising said crosslinked copolymer and a benzene-soluble chloroprene and process for producing the same.
Inventors
- 👤 G Jennes
- 👤 E Huther
- 👤 W Wolff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:03
CPC Classifications
C; C08; C08F; C08F236/00; C08F236/02; C08F236/04; C08F236/14; C08F236/16; C08F236/18; C08L; C08L11/00; C08K; C08K5/00; C08K5/04; C08K5/10; C08K5/101; C08K5/103; C08L11/02
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
67 words
A crosslinked copolymer consisting of chloroprene and 2-20 percent by weight of an ester of the formula wherein R1 and R2 are hydrogen, chlorine or alkyl containing from one to four carbon atoms and X is a divalent aliphatic radical containing two to 10 carbon atoms and wherein the two ethylenically unsaturated double bonds of said formula are separated from one another by at least six atoms.
Claim 2
Dependent Claim
67 words
A crosslinked copolymer consisting of chloroprene and 2-20 percent by weight of an ester of the formula wherein R1 and R2 are hydrogen, chlorine or alkyl containing from one to four carbon atoms and X is a divalent aliphatic radical containing two to 10 carbon atoms and wherein the two ethylenically unsaturated double bonds of said formula are separated from one another by at least six atoms.
Claim 3
Dependent Claim
36 words
The crosslinked copolymer of claim 1 wherein said ester of said formula is selected from the group consisting of ethylene dimethacrylate, propylene dimethacrylate, butylene dimethacrylate, isobutylene dimethacrylate, ethylene diacrylate, propylene diacrylate, butylene diacrylate and isobutylene diacrylate.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-05 | 1976-09-04 | 1977-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-05 | 1980-09-04 | 1981-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-05 | 1984-09-04 | 1985-03-06 | $7700.00 | Window Closed / Lapsed |