67967-66-2 Adipic acid, 1,4-butanediol, toluenediisocyanate, 2-((2-aminoethyl)amino)ethanesulfonic acid, monosodium salt polymer Hexanedioic acid, polymer with 2-((2-aminoethyl)amino)ethanesulfonic acid monosodium salt, 1,4-butanediol and 1,3-diisocyanatomethylbenzene