370873-96-4 beta-Alanine, N-(2-aminoethyl)-, monosodium salt, polymer with 1,6-diisocyanatohexane and 2-hydroxy-1-methylethyl 2-hydroxypropyl 1,2-hydrazinedicarboxylate, caprolactam- and polyethylene-polypropylene glycol mono-Bu ether-blocked