68584-92-9 Isocyanic acid, polymethylenepolyphenylene ester, polymer with alpha,omega-dihydroxypoly(1,3-butadiene-co-ethenylbenzene) and (2-hydroxyethyl)2-methyl-2-propenoate Isocyanic acid, polymethylenepolyphenylene ester, polymer with hydroxy-terminated butadiene-styrene polymer, 2-hydroxyethyl 2-methyl-2-propenoate-blocked