Process for producing polycarbonates

摘要

100 parts by weight of the polycarbonate produce by melt polycondensation of a carbonic acid diester and a dihydroxy compound and 0.0001 to 0.1 part by weight of a phosphite compound represented by following Formula (I) are formulated: wherein Rs are each one of a hydrogen atom, an alkyl group, an aryl group, and an oxyalkyl group, where the two Rs are not concurrently hydrogen atoms. The process of the invention can yield polycarbonate molding materials that have satisfactory hue and can be used in a wide variety of applications such for optical materials.