| 摘要 |
PROBLEM TO BE SOLVED: To provide a double metal cyanide catalyst having improved activity for producing a polyetherpolyol by the polyaddition reaction of an alkylene oxide to an active hydrogen atom-containing starting compound. SOLUTION: The double metal cyanide catalyst comprises (a) at least one double metal cyanide compound, (b) at least one organic complex ligand other than a polyether, bile acid, a bile acid salt, a bile acid ester or a bile acid amide, (c) at least one polyether, and (d) at least one of bile acid, the bile acid salt, the bile acid ester and the bile acid amide. |
