Polymerization catalyst systems, their preparation, and use

Details Polymerization catalyst systems, their preparation, and use Polymerization catalyst systems, their preparation, and use

1998-09-09

2000-12-12

Bell, Mark L.

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Plural component system comprising a - group i to iv metal...

502103, 502152, 502158, 556 52, 556 53, 556 56, 526126, 526127, 526129, B01J 2100, B01J 2102, B01J 2104, B01J 2106, B01J 2108

Patent

active

061598887

ABSTRACT:
A prepolymerized solid catalyst is prepared by reacting a suitable support base with an organoaluminum compound and then reacting that product with an activity promoting amount of water and then reacting the resulting solid cocatalyst with a metallocene and then subjecting that product to prepolymerization in the presence of hydrogen. The prepolymerized solid catalyst is useful in the polymerization of olefins.

REFERENCES:
patent: 5565592 (1996-10-01), Patsidis et al.
patent: 5587501 (1996-12-01), Winter et al.
patent: 5747408 (1998-05-01), Commereuc
patent: 5807938 (1998-09-01), Kanecko et al.
patent: 5834393 (1998-11-01), Jacobsen et al.
U.S. Ser. No. 955,219, filed Oct. 20, 1997.

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