It is found that the catalyst system composed of triisobutylaluminum ( Al), phosphoric acid (P); and phenothiazine ( PT ) is very effective for the polymerization of epichlorohydrin(ECH) . It gives high rate, high yield and high degree of polymerization.

• 由三异丁基铝(Al)、磷酸(P)和吩噻嗪(PT)组成的催化体系对环氧氯丙烷的聚合具有高活性、高聚合速率、高产率和高聚合度等特点。