CAS 129897-24-1 2-Propenoic acid, 2-hydroxyethyl ester, polymer with 2-ethyl-2-(hydroxymethyl)-1,3-propanediol, 5-isocyanato-1-(isocyanatomethyl)-1,3,3-trimethylcyclohexane and oxirane, block (HCID 178543589)|化工社