日本三井化学公司已开发出一种新催化剂 ,其制备聚乙烯的活性比金属茂催化剂高出 1 0倍。金属茂催化剂 ,在约2 5～ 75℃ ,0 .1 MPa压力下 ,一般而言 ,其活性约为 2 0～ 1 1 0kg/( mmol cat· h) ;这种 FI新催化剂由 族金属 (诸如 Zr,Ti或 Hf)与两个苯氧基亚胺螯合配合体络合而 Mitsui Chemicals Japan has developed a new catalyst, the preparation of polyethylene activity than metallocene catalyst 10 times higher. The metallocene catalyst generally has an activity of about 20 to 110 kg / (mmol cat · h) at about 25 to 75 ° C under a pressure of 0.1 MPa; the new FI catalyst is composed of a metal ( Such as Zr, Ti or Hf) is complexed with two phenoxyimine chelate complexes