Patent ID: 8463099

Claim:
A resin composition for an optical material comprising (A) a carboxylic acid-modified phenoxy resin containing a repetitive unit A-1 and a repetitive unit A-2, (B) a polymerizable compound and (C) a polymerization initiator: wherein X 1 represents any divalent group of: X 2 represents a divalent organic group having 1 to 20 carbon atoms; Y 1 represents any divalent group of: R 1 to R 19 each represent independently any of a hydrogen atom, a fluorine atom, an organic group having 1 to 20 carbon atoms and a fluorine-containing organic group having 1 to 20 carbon atoms; and a represents an integer of 2 to 10; and wherein X 3 represents any divalent group of: Y 2 represents any divalent group of: R 20 to R 38 each represent independently any of a hydrogen atom, a fluorine atom, an organic group having 1 to 20 carbon atoms and a fluorine-containing organic group having 1 to 20 carbon atoms; and b represents an integer of 2 to 10, wherein the polymerizable compound (B) is a compound containing at least one of an ethylenically unsaturated group and two or more epoxy groups in a molecule thereof.