Metal cyanide catalyst dispersions in initiator compounds and/or polyether are prepared by reacting an acidic metal cyanide compound a zero valent metal in a medium that is a solvent for the acidic metal cyanide compound. The resulting catalyst slurry may be combined with an initiator and/or polyether and stripped to form a catalyst/initiator or catalyst/polyether slurry. Using this method, an active alkylene oxide polymerization catalyst is prepared, and the preparation method is greatly simplified. Further, it is not necessary to use a separate organic complexing agent in the preparation.
金属
氰化物催化剂在
引发剂化合物和/或聚醚中的分散体是通过酸性
金属
氰化物化合物与零价
金属在作为酸性
金属
氰化物化合物溶剂的介质中反应制备的。得到的催化剂浆液可与
引发剂和/或聚醚混合并剥离,形成催化剂/
引发剂或催化剂/聚醚浆液。使用这种方法可以制备出活性环氧烷聚合催化剂,而且制备方法大大简化。此外,在制备过程中无需使用单独的有机络合剂。