Catalyst component for the polymerization of .alpha.-olefins and

Details Catalyst component for the polymerization of .alpha.-olefins and Catalyst component for the polymerization of .alpha.-olefins and

1995-07-20

1997-01-14

Nagumo, Mark

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526160, 526134, 526943, 502103, 502117, 556 11, 556 53, C08F 4642

Patent

active

055940811

ABSTRACT:
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.

REFERENCES:
(1992) Chem Rev. 92, 965, 985, R L Hatterman.

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