Hydroxyl-terminated polyether-esters
US4503216A · kind A · utility
20Cited by
7References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 21, 1984 |
| Grant date | Mar 5, 1985 |
| Priority date | — |
| Expiry date | Feb 21, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G63/823
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention provides substantially difunctional hydroxyl-terminated polyether-esters and a process for preparing the same. The process comprises reacting ethylene carbonate with a substituted or unsubstituted epsilon-caprolactone in the presence of a catalytic amount of a specified catalyst at a temperature of at least about 200.degree. C. The catalyst comprises an alkali metal salt, a quaternary ammonium salt, or a mixture thereof. The products of the invention are pourable liquid urethane-forming polyols at room temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.