Olefin polymerization catalyst component and catalyst system...

Details Olefin polymerization catalyst component and catalyst system... Olefin polymerization catalyst component and catalyst system...

2005-02-22

2005-02-22

Lu, Caixia (Department: 1713)

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

Catalyst or precursor therefor

Organic compound containing

C502S103000, C502S120000, C502S155000, C502S167000, C526S129000, C526S130000, C526S160000, C526S165000, C526S161000, C526S172000, C526S943000

Reexamination Certificate

active

06858558

ABSTRACT:
The invention relates to a catalyst component and a catalyst system for the preparation of high molecular weight ethylene or alpha-olefin homopolymers, ethylene-alpha-olefin copolymers, terpolymers or tetrapolymers, in a polymerization process, which is expediently effected in solution, at elevated temperature, preferably at least 80 DEG C. The catalyst system comprises a group 4-6 metal, preferably group 4 metal, a cyclic ligand (such as a cyclopentadienyl-type ligand), which forms a delocalized pi-bond with the metal M, a monohapto bonded 1,3-diaza-2-imino heterocyclic ligand (such as an iminoimidazolidine-type ligand) and anionic ligands and a catalyst activator coupound.

REFERENCES:
patent: 6420300 (2002-07-01), McMeeking et al.
patent: 9914250 (1999-03-01), None

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