Process for the preparation of polycarbonate.

摘要

A polycarbonate is produced by melt-polycondensing a dihydric hydroxy compound and a bisarycarbonate in the presence of 4-(4-methyl-1-piperidinyl)-pyridine or a salt thereof as catalyst. The process of the invention does not require the use of toxic phosgene and prevents the incorporation of chlorine ions in the resulting polycarbonate.