POLYCARBONATE COPOLYMER, METHOD FOR PRODUCING THE SAME, MOLDED BODY, OPTICAL MATERIAL, AND ELECTROPHOTOGRAPHIC PHOTOSENSITIVE BODY

摘要

Disclosed is a polycarbonate copolymer containing 0.1-50% by mole of a monomer unit represented by the formula (1) below and a monomer unit represented by the formula (2) below. The polycarbonate copolymer contains not more than 90 ppm by mass of a biphenol having a structure represented by the formula (3) below. (In the formula (1), R¹ and R² independently represent a hydrogen atom, an aliphatic hydrocarbon group having 1-6 carbon atoms, an aryl group having 6-12 carbon atoms or a halogen atom.) (In the formula (2), R³ and R⁴ independently represent a hydrogen atom, an aliphatic hydrocarbon group having 1-6 carbon atoms, an aryl group having 6-12 carbon atoms or a halogen atom; and X represents one linking group selected from -O-, -S-, -SO-, -SO²-, -CO-, and 9,9-fluorenylidene group.). (In the formula (3), R¹ and R² independently represent a hydrogen atom, an aliphatic hydrocarbon group having 1-6 carbon atoms, an aryl group having 6-12 carbon atoms or a halogen atom.)