Patent ID: 7772330

Claim:
A process for the preparation of polyether polyols with continuous metering and reacting of starter compounds and alkylene oxides, including a conditioned double metal cyanide (DMC) catalyst, said double metal cyanide catalyst being conditioned by dispersing said double metal cyanide catalyst in starting media having an OH number of from about 5 to 500 mg KOH/g, in which the starting media is selected from the group consisting of addition products of starter compounds having Zerewitinoff-active hydrogen atoms and alkylene oxides, poly(ester) polyols, polycarbonate polyols, hydroxylated triglycerides, hydroxylated fatty acid derivatives and mixtures thereof, at a temperature of from about 0° C. to about 80° C. over a period of from about 5 minutes to about 4 hours under pressure of from about 1 mbar to about 10 bar.