POLYCARBONATE RESIN FOR OPTICAL DISK SUBSTRATE AND OPTICAL DISK SUBSTRATE

摘要

A polycarbonate resin which has a viscosity-average molecular weight of 10,000 to 17,000 and is characterized by iron content, total free phenol amount, release agent content, terminal hydroxyl content, <1>H-NMR spectrum, etc. The resin is less apt to have defects attributable to burrs even when the amount of the release agent contained therein is not excessively large. It is hence suitable for use as a material for optical disk substrates.