Process for polyoxyalkylation
Abstract
Abstract This invention relates to a process for the polyoxyalkylation of aliphatic acids, and Alpha , Beta -unsaturated carboxylic acids in two stages. Monooxyalkylation is conducted with a quaternary ammonium salt catalyst, followed by the introduction of a boron trifluoride catalyst to effect the polyoxyalkylation stage. In one example, polymerizable emulsifying agents are prepared according to this invention which are nonionic Alpha , Beta unsaturated dicarboxylic acid esters, having a hydrophilic nonionic polyoxyalkyl radical portion alpha to or conjugated with a polymerizable double bond, and a hydrophobic ester radical portion beta to or unconjugated with the polymerizable double bond. Polymerdispersions thus formed may be used in the preparation of coating, impregnating and binding compositions.
Inventors
- 👤 William D Emmons
- 👤 George A Frank
Bibliographic Details
Claims Analysis
Total Claims: 5References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-05 | 1976-03-06 | 1976-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-05 | 1980-03-06 | 1980-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-05 | 1984-03-06 | 1984-09-05 | $7700.00 | Window Closed / Lapsed |