N-(Carboxymethyl)-N,N-dimethyl-2-[(2-methyl-1-oxo-2-propenyl)oxy]-ethanaminium inner salt polymer with 2- hydroxyethyl 2-methyl-2-propenoate and methyl 2-methyl-2-propenoate
N-(羧甲基)-N,N-二甲基-2-【(2-甲基-1-氧代-2-丙烯基)氧-乙基紫内盐、2-羟乙基-2-甲基-2-丙烯酸酯与甲基 2-甲基-2-丙烯酸酯的聚合物