2-Propenoic acid,2-methyl-, 2-[(1,1-dimethylethyl)amino]ethyl ester, polymer with methyl2-methyl-2-propenoate, 2-propenoic acid andN-(1,1,3,3-tetramethylbutyl)-2-propenamide, potassium salt, 1,1-dimethylpropyl2,2-dimethylpropaneperoxoate-initiated