US2740764A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization of ethylenically unsaturated polyesters with vinyl compounds
Assignee: Bayer AG
•
Filing: 1952-11-13
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Granted: 1956-04-03
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Expires: 1972-11-13
Abstract
No abstract record available.
Inventors
- 👤 Nischk Gunther
- 👤 Muller Karl Erwin
- 👤 Bayer Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:10
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/68; C08G63/685; C08G63/6854; C08G63/6858; C08L; C08L67/00; C08L67/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
THE PROCESS FOR THE PRODUCTION OF COPOLYMERS WHICH COMPRISES REACTING A VINYL COMPOUND AND A POLYESTER OBTAINED BY THE CONDENSATION OF A POLYHDRIC ALCOHOL, AT LEAST ONE POLYCARBOXYLIC ACID, AT LEAST ONE OF SAID ACIDS BEING AN ETHYLENICALLY UNSATURATED CARBOXYLIC ACID AND A SECONDARY AMINE OF THE FORMULA R-NH-(CH2)N-X, IN WHICH X IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF COOH, NH2, OH AND NHR, R IS A MEMBER OF THE GROUP CONSISTING OF ALKYL AND ARYL AND N IS AN INTEGER FROM 1-6.
Claim 2
Dependent Claim
85 words
THE PROCESS FOR THE PRODUCTION OF COPOLYMERS WHICH COMPRISES REACTING A VINYL COMPOUND AND A POLYESTER OBTAINED BY THE CONDENSATION OF A POLYHDRIC ALCOHOL, AT LEAST ONE POLYCARBOXYLIC ACID, AT LEAST ONE OF SAID ACIDS BEING AN ETHYLENICALLY UNSATURATED CARBOXYLIC ACID AND A SECONDARY AMINE OF THE FORMULA R-NH-(CH2)N-X, IN WHICH X IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF COOH, NH2, OH AND NHR, R IS A MEMBER OF THE GROUP CONSISTING OF ALKYL AND ARYL AND N IS AN INTEGER FROM 1-6.
References Cited (Backward Citations)
US2449299A
Cited
US2450552A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-03 | 1959-10-03 | 1960-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-03 | 1963-10-03 | 1964-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-03 | 1967-10-03 | 1968-04-03 | $7700.00 | Window Closed / Lapsed |