Unsaturated polyester compositions
Abstract
Abstract 1. A COMPOSITION COMPRISING AN UNSATURATED POLYESTER WHICH IS THE CONDENSATION REACTION PRODUCT OF A MIXTURE CONSISTING ESSENTIALLY OF AN UNSATURATED, DICARBOXYLIC ACID OR ANHYDRIDE THEREOF, AN AROMATIC DICARBOXYLIC ACID OR ANHYDRIDE THEREOF IN AN AMOUNT OF ABOUT 5 TO 30 PERCENT BY WEIGHT, BASED ON THE COMBINED WEIGHT OF THE UNSATURATED, DICARBOXYLIC ACID AND THE AROMATIC DICARBOXYLIC ACID, AND A GLYCOL HAVING THE FORMULA: HO-(CH2)M-C(-R1)(-R2)-(CH2)P-OH WHEREIN THE SUM OF M+P IS AT LEAST ONE AND R1 AND R2 ARE HYDROGEN OR ALKYL HAVING 1 TO 20 CARBON ATOMS; AND A THERMOPLASTIC COPOLYMER, IN AN AMOUNT OF ABOUT 10 TO ABOUT 85 PERCENT BY WEIGHT BASED ON THE WEIGHT OF SAID UNSATURATED POLYESTER, OF VINYL CHLORIDE AND VINYL ACETATE HAVING A COMBINED VINYL CHLORIDE CONTENT OF ABOUT 35 TO ABOUT 45 PERCENT BY WEIGHT.
Inventors
- 👤 M Harpold
- 👤 K Atkins
Bibliographic Details
Claims Analysis
Total Claims: 2References 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) | 1977-10-14 | 1978-04-15 | 1978-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-14 | 1982-04-15 | 1982-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-14 | 1986-04-15 | 1986-10-15 | $7700.00 | Window Closed / Lapsed |