1,6-Hexanediol, adipic acid, 4,4'-diphenylmethane diisocyanate polyurethane 1,6-Hexanediol, adipic acid, diphenylmethane-4,4'-diisocyanate polymer 152103-09-8 31075-20-4 Hexanedioic acid, 1,6-hexanediol, 1,1'-methylenebis(4-isocyanatobenzene) polymer Hexanedioic acid, polymer with 1,6-hexanediol and 1,1'-methylenebis(4-isocyanatobenzene)