2-Propenoic acid, 2-methyl-, 2-((1,1-dimethylethyl)amino)ethyl ester, polymer with ethyl 2-propenoate and methyl 2-methyl-2-propenoate 29354-73-2 Methyl methacrylate, ethyl acrylate, tert-butylaminoethyl methacrylate polymer