Process for the preparation of polyolefins

Details Process for the preparation of polyolefins Process for the preparation of polyolefins

1996-06-24

1997-12-09

Wu, David W.

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

Catalyst or precursor therefor

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

502152, 502153, 556 7, 556 11, 556 12, 556 19, 556 20, 556 28, 556 53, 556 54, 556 56, 526118, 526119, C08F 464

Patent

active

056960450

ABSTRACT:
Polyolefins with a molecular weight distribution M.sub.w /M.sub.n .gtoreq.3.0, which may be monomodal, bimodal or multimodal, can be obtained by polymerization or copolymerization of olefins with a catalyst system consisting of an aluminoxane and a transition metal component (metallocene), in which the transition metal component consists of at least one zirconocene of the formula I and at least one zirconocene of the formula Ia ##STR1## or alternatively of at least 2 zirconocenes of the formula I.

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patent: 4939217 (1990-07-01), Stricklen
patent: 4975403 (1990-12-01), Ewen
patent: 5132381 (1992-07-01), Winter et al.
patent: 5278264 (1994-01-01), Spaleck et al.
patent: 5328969 (1994-07-01), Winter et al.
patent: 5350817 (1994-09-01), Winter et al.

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