| 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 (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 DEG C., and/or (b) one or more non-metal containing acids of which a 0.1 N solution in water at 25 DEG C. has a pH not exceeding 3. |