US3012979A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compositions from trimellitic anhydride, epoxys and fatty acids
Assignee: Standard Oil Co
•
Filing: 1959-04-22
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Granted: 1961-12-12
•
Expires: 1979-04-22
Abstract
No abstract record available.
Inventors
- 👤 James R Stephens
- 👤 Richard E Van Strien
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:00
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/40; C08G63/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
A RESIN SUITABLE FOR PREPARATION OF AIR DRYING FILMS PREPARED BY REACTING (1) A CONDENSATE OF A 1,2-EPOXIDE AND TRIMELITIC ANHYDRIDE, IN A MOLAR RATIO SUCH THAT SAID CONDENSATE HAS AN ACID NUMBER FROM ABOUT 0 TO ABOUT 15 AND A HYDROXYL NUMBER FROM ABOUT 150 TO ABOUT 250, SAID ANHYDRIDE AND SAID EPOXIDE BEING REACTED AT A TEMPERATURE FROM ABOUT 15* C. TO ABOUT 50* C. FOR A TIME NEEDED TO ESSENTIALLY COMPLETE SAID REACTION WITH (2) AN UNSATURATED FATTY ACID CONTAINING FROM 10 TO 30 CARBON ATOMS, IN AN AMOUNT SUCH THAT THEORETICALLY ALL OF THE HYDROXYL GROUPS PRESENT IN SAID CONDENSATE ARE REACTED BY CARBOXYL GROUPS IN SAID FATTY ACID, SAID CONDENSATE AND SAID FATTY ACID BEING REACTED AT A TEMPERATURE BETWEEN ABOUT 150* C. AND 275* C. UNTIL THE RESIN PRODUCT HAS AN ACID NUMBER BETWEEN ABOUT 20 AND ABOUT 50.
Claim 2
Dependent Claim
145 words
A RESIN SUITABLE FOR PREPARATION OF AIR DRYING FILMS PREPARED BY REACTING (1) A CONDENSATE OF A 1,2-EPOXIDE AND TRIMELITIC ANHYDRIDE, IN A MOLAR RATIO SUCH THAT SAID CONDENSATE HAS AN ACID NUMBER FROM ABOUT 0 TO ABOUT 15 AND A HYDROXYL NUMBER FROM ABOUT 150 TO ABOUT 250, SAID ANHYDRIDE AND SAID EPOXIDE BEING REACTED AT A TEMPERATURE FROM ABOUT 15* C. TO ABOUT 50* C. FOR A TIME NEEDED TO ESSENTIALLY COMPLETE SAID REACTION WITH (2) AN UNSATURATED FATTY ACID CONTAINING FROM 10 TO 30 CARBON ATOMS, IN AN AMOUNT SUCH THAT THEORETICALLY ALL OF THE HYDROXYL GROUPS PRESENT IN SAID CONDENSATE ARE REACTED BY CARBOXYL GROUPS IN SAID FATTY ACID, SAID CONDENSATE AND SAID FATTY ACID BEING REACTED AT A TEMPERATURE BETWEEN ABOUT 150* C. AND 275* C. UNTIL THE RESIN PRODUCT HAS AN ACID NUMBER BETWEEN ABOUT 20 AND ABOUT 50.
References Cited (Backward Citations)
US2809177A
Cited
US2886472A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-12-11 | 1965-06-12 | 1965-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-11 | 1969-06-12 | 1969-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-11 | 1973-06-12 | 1973-12-12 | $7700.00 | Window Closed / Lapsed |