2-Propenoic acid, 2-methyl-, butyl ester, polymer with 2-(dimethylamino)ethyl 2-methyl-2-propenoate, 2-[2-(2-ethoxyethoxy)ethoxy]ethyl 2-methyl-2-propenoate, 2-ethylhexyl 2-methyl-2-propenoate, methyl 2-methyl-2-propenoate and phenylmethyl 2-methyl-2-propenoate, compd. with (chloromethyl)benzene, [(1-methoxy-2-methyl-1-propen-1-yl)oxy]trimethylsilane-initiated, hydrolyzed