US3278636A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermosetting compositions of carboxyl terminated polyesters and diglycidyl ethers
Assignee: Union Carbide Corp
•
Filing: 1960-06-21
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Granted: 1966-10-11
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Expires: 1980-06-21
Abstract
No abstract record available.
Inventors
- 👤 Wynstra John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:49
CPC Classifications
C; C08; C08L; C08L63/00; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/16; C08G63/20; C09; C09J; C09J167/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
A THERMOSETTING COMPOSITION COMPRISING A CARBOXYL TERMINATED POLYESTER HAVING A CARBOXYL FUNCTIONALITY OF GREATER THAN 2 AND NOT MORE THAN 3.5 AND BEING THE REACTION PRODUCT OF A MIXTURE CONTAINING ADIPIC ACID, DIETHYLENE GLYCOL AND GLYCEROL; A LIQUID DIGLYCIDYL ETHER OF 2,2-BIS(P-HYDROXYPHENYL)PROPANE AND A CATALYTIC AMOUNT OF BENZYLDIMETHYLAMINE, WHEREIN THERE IS PRESENT IN SAID COMPOSITION 0.8 TO 1.2 EQUIVALENTS OF SAID POLYESTER PER EQUIVALENT OF SAID DIGLYCIDYL ETHER.
Claim 2
Dependent Claim
68 words
A THERMOSETTING COMPOSITION COMPRISING A CARBOXYL TERMINATED POLYESTER HAVING A CARBOXYL FUNCTIONALITY OF GREATER THAN 2 AND NOT MORE THAN 3.5 AND BEING THE REACTION PRODUCT OF A MIXTURE CONTAINING ADIPIC ACID, DIETHYLENE GLYCOL AND GLYCEROL; A LIQUID DIGLYCIDYL ETHER OF 2,2-BIS(P-HYDROXYPHENYL)PROPANE AND A CATALYTIC AMOUNT OF BENZYLDIMETHYLAMINE, WHEREIN THERE IS PRESENT IN SAID COMPOSITION 0.8 TO 1.2 EQUIVALENTS OF SAID POLYESTER PER EQUIVALENT OF SAID DIGLYCIDYL ETHER.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-10 | 1970-04-11 | 1970-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-10 | 1974-04-11 | 1974-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-10 | 1978-04-11 | 1978-10-11 | $7700.00 | Window Closed / Lapsed |