Metal cyanide complex catalyst of double, preparation process thereof, process for the polymerization of an epoxy and polyether polyol

摘要

The present invention relates to a process of preparing a double metal cyanide (DMC) complex catalyst with an improved catalytic activity useful for epoxide polymerization. It also relates to the DMC catalyst obtainable by said process, as well as to polyether polyols prepared by a polymerization reaction using said DMC catalyst.