| 摘要 |
The invention relates to a solid double metal cyanide catalyst with improved epoxide polymerization activity comprising a double metal cyanide compound, an organic complexing agent and 5...80 % by weight, based on the catalyst amount, of a polyether having a number average molecular mass higher than 500. The double metal cyanide compound is the zinc hexacyanocobaltate, the organic complexing agent is the ter-butyl-alcohol and the polyether is a polyether polyoI having a number average molecular mass of 1000...10000, preferably a poly(oxypropylene) having a number average molecular mass of 2000...4000. |
