COPOLYMER HAVING NEGATIVE INTRINSIC BIREFRINGENCE, AND MOLDED ARTICLE AND FILM COMPRISING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a copolymer that is based on styrene and/or styrene derivatives but exhibits, through a new solution, excellent heat resistance, a relatively flat wavelength dispersibility, and phase difference stability.;SOLUTION: A copolymer according to the present invention has a styrenic unit and a constitutional unit represented by the following formula (where, R¹ is a hydrogen atom or a C1-C20 organic group, and n is an integer of 1-4).;COPYRIGHT: (C)2016,JPO&INPIT