POSCO Holdings Inc.
Method for Separating Propylene Carbonate in Preparing Process of Polyether Carbonate Polyol

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.