Process of preparing nonaqueous dispersions of thermosetting copolymers
Abstract
Abstract NONAQUEOUS DISPERSIONS OF COPOLYMERS OF (1) AT LEAST ONE ETHYLENICALLY-UNSATURATED MONOMER, (2) A HYDROXYALKYL ESTER OF AN UNSATURATED ALIPHATIC MONOCARBOXYLIC ACID, AND (3) A DIFFERENT HYDROXY-CONTAINING ETHYLENICALLY UNSATURATED MONOMER, WHICH DISPERSIONS ARE STABLE PER SE AND IN THE PRESENCE OF AMINOPLAST RESINS AND SOLUTIONS THEREOF, AND THE COPOLYMERS ARE INTERNALLY COMPATIBLE. THE DISPERSIONS ARE PREPARED BY THE PROCESS WHICH COMPRISES FIRST PARTIALLY POLYMERIZING A PORTION OF AT LEAST ONE OF THE HYDROXY-FREE AND CARBOXY-FREE MONOMERS WITH ALL OF THE DIFFERENT HYDROXY-CONTAINING ETHYLENICALLY UNSATURATED MONOMER, FOLLOWED BY ADDING ALL OF THE REMAINING MONOMERS AND HOLDING TO ESSENTIALLY COMPLETE CONVERSION. THE DISPERSIONS ARE USEFUL IN COATING COMPOSITIONS.
Inventors
- 👤 C Reid
- 👤 D Hicks
- 👤 C Green
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) | 1976-07-09 | 1977-01-08 | 1977-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-09 | 1981-01-08 | 1981-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-09 | 1985-01-08 | 1985-07-10 | $7700.00 | Window Closed / Lapsed |