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Development of Novel Polycarbonate Melt-Process (Mitsubishi Melt-Process) and Its Assessment from the View Point of Green Sustainable Chemistry by Means of I-Messe

Yoshihiro Kurasawa, Mitsubishi Chemical Corporation, Dai-ichi Tamachi Building 33-8, Shiba 5-Chome, Minato-Ku Tokyo, Japan

A novel Polycarbonate melt-process was developed instead of interfacial-process,in which a direct synthesis of diphenyl carbonate from phosgene and phenol was employed. Lower environmental load and energy saving were achieved andpolycarbonate with excellent quality was also obtained by the Mitsubishi Melt-Process. The process was assessed from the view point of green sustainable chemistry by means of i-Messe proposed by Japan Chemical Innovation Institute, and proved to be superior to the interfacial one.