Quaternary ammonium salt cationic polymer have been synthesized acting as reacting material and initiator with epicholorohydrin, dimethylamine and potasaium persulfate, sodium sulphite.

• 以过硫酸钾、亚硫酸钠为引发剂，二甲胺、环氧氯丙烷为原料合成了季胺盐型阳离子聚合物。