66142-18-5 Butanoic acid, 3-oxo-, 2-((2-methyl-1-oxo-2-propenyl)oxy)ethyl ester, polymer with butyl 2-methyl-2-propenoate, 2-methyl-2-((1-oxo-2-propenyl)amino)-1-propanesulfonic acid and 2-methyl-2-((1-oxo-2-propenyl)amino)-1-propanesulfonic acid monosodium salt Butyl methacrylate, 2-acrylamido-2-methylpropanesulfonic acid, 2-acrylamido-2-methylpropanesulfonic acid sodium salt, 2-acetoacetoxyethyl methacrylate polymer