申请人:Mitsubishi Chemical Corporation
公开号:US05594081A1
公开(公告)日:1997-01-14
The present invention provides a catalyst for polymerizing an .alpha.-olefin which is capable of producing an .alpha.-olefin polymer having a high molecular weight in a high yield under the polymerization conditions including at high temperature, and a process for preparing an .alpha.-olefin polymer, which catalyst comprises a Component (A) which comprises a coordination compound having a skeleton of a metallocene compound comprising an indenyl ring or a hydroindenyl ring which is an indenyl having a six-membered portion hydrogenated as a ligand and having Ti, Zr or Hf as a metal component in combination with a Component (B) which is, for example, an alumoxane. The coordination compound is crosslinked at the six-membered rings characterized by the fact that two of the indenyl or hydroindenyl groups are crosslinked at the six-membered ring of the indenyl or hydroindenyl group.
本发明提供了一种催化剂,用于聚合能够在高温条件下产生高分子量α-烯烃聚合物的α-烯烃,并且在聚合条件下高产率,以及一种制备α-烯烃聚合物的方法,该催化剂包括组分(A),其包括具有金属茂化合物骨架的配位化合物,该金属茂化合物包括一个具有六元环部分氢化的茚基环或氢茚基环的茂基环作为配体,并且具有Ti、Zr或Hf作为金属组分,与组分(B),例如铝氧烷,结合使用。该配位化合物在六元环上交联,其特征在于两个茚基或氢茚基组分在茚基或氢茚基组分的六元环上交联。