| abstract |
【Task】 Photoelastic coefficient (K) is K ≦ 10 × 10 −12 m 2 / N and glass transition temperature (Tg) satisfies Tg ≧ 100 ° C. A polycarbonate resin and a method for producing the same are provided. [Solution] Copolycarbonate resin having transparency, heat resistance, low photoelastic coefficient, mechanical strength suitable for optical use film by copolycarbonate resin obtained by reacting dihydroxy compound having specific structure and carbonic acid diester, and production method thereof was gotten. [Selection figure] None |