1,3-Benzenedicarboxylic acid, 2,2-dimethyl-1,3-propanediol, 1,1'-methylenebis(4-isocyanatobenzene) polymer 1,3-Benzenedicarboxylic acid, polymer with 2,2-dimethyl-1,3-propanediol and 1,1'-methylenebis(4-isocyanatobenzene) 70714-87-3