Substituted pyridyl amine catalysts and processes for...

Details Substituted pyridyl amine catalysts and processes for... Substituted pyridyl amine catalysts and processes for...

2006-03-28

2006-03-28

Harlan, Robert D. (Department: 1713)

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

Catalyst or precursor therefor

Organic compound containing

C502S167000, C502S117000, C526S161000, C526S171000, C526S348000

Reexamination Certificate

active

07018949

ABSTRACT:
New ligands, compositions, metal-ligand complexes and arrays with pyridyl-amine ligands are disclosed that catalyze the polymerization of monomers into polymers. Certain of these catalysts with hafnium metal centers have high performance characteristics, including higher comonomer incorporation into ethylene/olefin copolymers, where such olefins are for example, 1-octene, isobutylene or styrene. Certain of the catalysts are particularly effective at polymerizing propylene to high molecular weight isotactic polypropylene in a solution process at a variety of polymerization conditions.

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