72214-38-1 Butanediol, hexanedioic acid, dimethylolpropionic acid, 4,4'-methylenebis(phenyl isocyanate), ethylenediamine polymer Hexanedioic acid, polymer with butanediol, 1,2-ethanediamine, 3-hydroxy-2-(hydroxymethyl)-2-methylpropanoic acid and 1,1'-methylenebis(4-isocyanatobenzene)