US 6,472,341 B1Granted

Polymerization catalysts

AssigneeBP Chemicals Limited

InventorsBrian Stephen Kimberley, David Pratt

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The present invention relates to transition metal based polymerization catalysts and their use in the polymerization and copolymerization of olefins.

Dependent claims

A polymerization catalyst comprising (1) a nitrogen-containing iron compound having the following Formula Z,

and (2) an activating quantity of an activator compound selected from the group consisting of organoaluminium compounds and hydrocarbylboron compounds wherein X represents an atom or group covalently or ionically bonded to the Fe and b is the valency of the atom or group X, and the catalyst is supported on (3) a solid particulate support material.

Dependencies are inferred from the claim text.

C07D 213/53
Radicals substituted by doubly-bound oxygen, sulfur, or nitrogen atoms, or by two such atoms singly-bound to the same carbon atom: nitrogen atoms
C07F 13/005
Compounds containing elements of Groups 7 or 17 of the Periodic Table: compounds without a metal-carbon linkage
C07F 15/0053
Ruthenium compounds: without a metal-carbon linkage
C07F 15/025
Iron compounds: without a metal-carbon linkage

From the US filing history. Foreign family members aren’t listed.

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