High-fluidity polycarbonate copolymer, process for production highly polymerized aromatic polycarbonate resin and aromatic polycarbonate compound

摘要

Copolymer having high fluidity and high molecular weight which is formed of a structural unit derived from an aliphatic diol compound and a structural unit derived from an aromatic dihydroxy compound. A polycarbonate resin composition is also provided comprising a highly polymerized aromatic polycarbonate resin as a main component and also comprising cyclic carbonate present in an amount of not more than 3000 ppm, wherein the highly polymerized aromatic polycarbonate resin is produced by a process which comprises a highly-polymerizing process wherein an aromatic polycarbonate is reacted with an aliphatic diol compound in the presence of a transesterification catalyst to increase the molecular weight.