RESIN COMPOSITION, OPTICAL DISK SUBSTRATE AND OPTICAL DISK OBTAINED THEREFROM

摘要

PROBLEM TO BE SOLVED: To provide a novel resin composition for an optical disk substrate excellent in moisture absorption properties, warping and stiffness. SOLUTION: This resin composition comprises a polycarbonate resin (a) and a hydrogenated styrene polymer (b) in a wt. ratio of (a)/(b) of (50/50)-(99/1). The optical disk substrate and optical disk are prepared by using the composition.