catalisador de complexo de cianeto de metal duplo, processo de preparação do mesmo, processo para a polimerização de um epóxi e poliol poliéter

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.