POLYETHER CARBONATE POLYOL PRODUCTION METHOD.
The invention relates to a method for producing polyether carbonate polyols by attaching alkylene oxides and carbon dioxide to one or more H-functional starters in the presence of a double-metal cyanide catalyst, characterized in that (Î±) a suspending agent which contains no H-functional groups is provided in a reactor; (Ã) optionally, a moiety of alkylene oxide is added to the mixture from step (Î±) at temperatures of 90 to 150Â°C, and the addition of the alkylene oxide compound is then interrupted; and (Î³) one or more H-functional starters are continuously metered into the reactor during the reaction.