Hydroxyl containing liquid mercaptan-terminated acrylate polymers
Abstract
Abstract LIQUID MERCAPTAN-TERMINATED ACRYLATE POLYMERS CONTAINING PENDANT HYDROXYL GROUPS ARE OBTAINED BY PREPARING AN INTERMEDIATE POLYMER OF AN ALKYL ACRYLATE (A) WITH A WITH A VINYLIDENE ($C=CH2) MONOMER CONTAINING A HYDROXYL GROUP IN THE PRESENCE OF A DIXANTHOGEN DISULFIDE, AND THEN HYDROLYZING OR PYROLYZING THE INTERMEDIATE POLYMER TO FORM MERCAPTAN GROUPS, (B) WITH VINYL ACETATE IN THE PRESENCE OF A DIXANTHOGEN DISULFIDE, AND THEN HYDROLYZING THE ACETATE GROUPS TO FORM HYDROXYL GROUPS EITHER PRIOR TO OR AFTER FORMING THE MERCAPTAN GROUPS, AND (C) WITH A VINYLDENE MOMOMER CONTAINING AN EPOXIDE (-CH2<(-O-CH2-)) GROUP IN THE PRESENCE OF A DIXANTHOGEN DISULFIDE, AND THEN REACTING THE EPOXIDE GROUP WITH AN ALCOHOL TO INTRODUCE HYDROXYL GROUPS EITHER PRIOR TO OR AFTER FORMING THE MERCAPTAN GROUPS. THE POLYMERS CURE AT APPLICATION TEMPERATURES AND HAVE LOW TEMPERATURE EXTENSIBILITY, MAY BE FORMED INTO CAULKS, SEALANTS, POTTING COMPOUNDS AND ADHESIVES.
Inventors
- 👤 A Csontos
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) | 1976-01-16 | 1976-07-17 | 1977-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-16 | 1980-07-17 | 1981-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-16 | 1984-07-17 | 1985-01-16 | $7700.00 | Window Closed / Lapsed |