1,3-Benzenedicarboxylic acid, polymer with 1,4-butanediol, hexanedioic acid and 1,1'-methylenebis(4-isocyanatobenzene) 1,4-Butanediol, 4,4'-diphenylmethane diisocyanate, adipic acid, isophthalic acid polyurethane 72276-01-8