Method for separating propylene carbonate in preparing process of polyether carbonate polyol
AssigneesPosco, Research Institute of Industrial Science & Technology
InventorsJoon-Hyun Baik, Jae-Hee Ha
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Abstract
The present invention relates to a method for selectively separating propylene carbonate by adding water to reaction products comprising a polyether carbonate polyol and propylene carbonate, which are generated from a polymerization reaction of propylene oxide and carbon dioxide under a double metal cyanide (DMC) catalyst, wherein an economical and effective separation of propylene carbonate can be achieved.
Claims4
A method of removing propylene carbonate from a mixture containing polyether carbonate polyol and propylene carbonate, the method comprising adding water to said mixture to selectively remove propylene carbonate therefrom.
Dependencies are inferred from the claim text.