AMORPHOUS POLYMER FOR OPTICAL MATERIAL, RESIN COMPOSITION, RESIN PELLET AND RESIN MOLDING

摘要

PROBLEM TO BE SOLVED: To provide an amorphous polymer for an optical material that is high in refractive index and low in glass-transition temperature and birefringence.SOLUTION: An amorphous polymer for an optical material has a first structural unit represented by formula (1) in the main chain (where Ris a C2-4 alkylene group; Ris a C1-12 univalent organic group; a is an integer of 0-2; b is an integer of 0-6; when a is 2 or b is a plural number, two Rs or a plurality of Rs may be the same or different and the plurality of Rs may bind to each other to form a part of the ring structure).