(Butyl acrylate-isobutyl methacrylate-methacrylic acid-t-butylaminoethyl methacrylate) polymer 2-Propenoic acid, 2-methyl-, polymer with butyl 2-propenoate, 2-((1,1-dimethylethyl)amino)ethyl 2-methyl-2-propenoate and 2-methylpropyl 2-methyl-2-propenoate 63663-96-7