The catalyst composed of rare earth phosphonate and triisobutylaluminum was used to catalyze copolymerization of CO2 and epichlorohydrin(ECH)to synthesize polymer ECHCO2.

• 利用稀土磷酸酯盐和三异丁基铝组成的催化剂催化二氧化碳和环氧氯丙烷（ECH）共聚反应，合成出新型高分子材料脂肪族聚碳酸酯（ECHCO2）。