Patent ID: 6846900

Claim:
A plastic lens composition comprising, as an essential component, a polyvalent carboxylic acid ester, which is a trivalent or greater valent carboxylic acid ester and which has, within one molecule, two or more organic groups represented by the following formula (I) and an organic group represented by the following formula (2): wherein each R 1 independently represents H or CH 3 ; wherein R 2 represents an organic group derived from a compound having an aromatic ring and a hydroxyl group within one molecule; and wherein the polyvalent carboxylic acid ester is an ester of a polyvalent carboxylic acid selected from the group consisting of 1.3,5-benzenetricarboxylic acid, 1,2,4-benzenetricarboxylic acid, 1,2,3-propanetricarboxylic acid, 1,2,4,5-benzenetetracarboxylic acid and 1,2,3,4-butanetetracarboxylic acid.