Patent ID: 6127517
Filing Date: 2000-10-03
Classification: C08G

Abstract:
A process for polymerizing hexafluoropropene oxide comprising the steps of:preparing a polymerization initiator solution which contains in an aprotic polar solvent a polymerization initiator represented by the following general formula (1):CSOCF.sub.2 --Rf--CF.sub.2 OCs (1)wherein Rf is a perfluoroalkylene group of 1 to 4 carbon atoms or perfluoroalkylene group of 2 to 10 carbon atoms having an ether bond,treating said polymerization initiator solution by adding a perfluoroolefin thereto at a temperature of -30.degree. C. to 50.degree. C. to remove protonic substances, cesium fluoride and hydrogen fluoride in said polymerization initiator, andfeeding hexafluoropropene oxide to the treated polymerization initiator solution for effecting polymerization of hexafluoropropene oxide.