The water-soluble tripolymer of maleic anhydride(MA), sodium allylsufonate(SAS)and acrylamide(AM) was prepared with water as solvent and persulfate as initiator.

用水作溶剂、过硫盐为引发剂,酐(MA)、丙基(SAS)和丙酰胺(AM)为单体,通过溶液聚合制备了水溶性高分子MA-SAS-AM。