4,4'-Methylenebis(phenyl isocyanate), 1,4-butanediol, butylene glycol polyadipate polymer 58180-53-3 Adipic acid, butanediol, p,p-diphenylmethane diisocyanate, 1,4-butanediol polymer Hexanedioic acid, polymer with butanediol, 1,4-butanediol and 1,1'-methylenebis(4-isocyanatobenzene)