Tridentate metal catalyst for olefin polymerization

Details Tridentate metal catalyst for olefin polymerization Tridentate metal catalyst for olefin polymerization

2005-11-21

2008-10-21

Harlan, Robert D. (Department: 1796)

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

Catalyst or precursor therefor

Organic compound containing

C502S167000, C526S161000, C526S171000, C556S051000

Reexamination Certificate

active

07439205

ABSTRACT:
In accordance with the present invention, there is provided a transition metal olefin polymerization catalyst component characterized by the formula:where, M is a Group IV or a Group IV transition metal, B is a bridge group containing at least two carbon atoms, A′ and A″ are organogroups, each containing a heteroatom selected from the group consisting of oxygen, sulfur, nitrogen and phosphorus, X is selected from the group consisting of chlorine, bromine, iodine, a C1-C20alkyl group, a C6-C30aromatic group and mixtures thereof, and n is 1, 2 or 3. The invention also encompasses a method for the polymerization of an ethylenically unsaturated monomer which comprises contacting a transition metal catalyst component as characterized by formula (1) above and an activating co-catalyst component in a polymerization reaction zone with an ethylenically unsaturated monomer under polymerization conditions to produce a polymer product.

REFERENCES:
patent: 6103657 (2000-08-01), Murray
patent: 2003/0191012 (2003-10-01), Murray
patent: PCT/GB99/03152 (1999-09-01), None
patent: WO 00/20427 (2000-04-01), None

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