Substituted gamma-butyrolactones derived from c16 and greater unsaturated acids
Abstract
Abstract THIS SPECIFICATION DISCLOSES A LACTONE HAVING THE FORMULA 3-R,3-R'',4-R"'',5-R"-TETRAHYDROFURAN-2-ONE IN THIS FORMULA R AND R'' ARE HYDROGEN OR AN AKYL GROUP CONTAINING 1 TO 3 CARBON ATOMS, R IS THE SAME AS OR DIFFERENT FROM R'' AND THE TOTAL NUMBER OF CARBON ATOMS IN R AND R'' DOES NOT EXCEED 3. ONE OF R" OR R"'' IS AN ALKYL OR AN ALKENYL GROUP, AND THE OTHER IS A CARBOXYALKYL, CARBOXYALKENYL, ESTERALKYL, OR ESTERALKENYL GROUP, THE SUM OF THE NUMBER OF CARBON ATOMS IN R" AND R"'' BEING AT LEAST 14. THESE LACTONES CAN BE EMPLOYED TO PRODUCE A LONG CHAIN DICARBOXYLIC ACID HAVING A GAMMA- OR BETAHYDROXY GROUP WHICH CAN BE USED IN FORMING ALKYD RESINS OR DETERGENTS. THE LACTONES ARE ALSO USEFUL AS LUBRICANTS FOR METAL PARTS.
Inventors
- 👤 E Heiba
- 👤 R Dessau
Bibliographic Details
Claims Analysis
Total Claims: 0References 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) | 1977-05-27 | 1977-11-26 | 1978-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-27 | 1981-11-26 | 1982-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-27 | 1985-11-26 | 1986-05-28 | $7700.00 | Window Closed / Lapsed |