2-Butenedioic acid (2Z)-, 2-hydroxybutyl 2-(2-oxo-1-imidazolidinyl)ethyl ester, polymer with butyl 2-propenoate, methyl 2-methyl-2-propenoate and 2-methylpropyl 2-methyl-2-propenoate 68298-64-6 68310-94-1