Process for the polymerization of epoxides
US4472560A · kind A · utility
132Cited by
5References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 29, 1983 |
| Grant date | Sep 18, 1984 |
| Priority date | — |
| Expiry date | Mar 29, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G18/48
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process for the polymerization of epoxides using as catalyst a double metal cyanide-type compound is described wherein said process is carried out in the presence of at least PA0 (a) one or more salts composed of at least bivalent metal ions and metal-free anions, having a solubility in water of at least 1 g/100 ml at 25.degree. C., and/or PA0 (b) one or more non-metal containing acids of which a 0.1 N solution in water at 25.degree. C. has a pH not exceeding 3.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.