Title:
PROCESS FOR PREPARING SUPPORTED TRANSITION METAL CATALYST SYSTEMS AND CATALYST SYSTEMS PREPARED THEREBY
Document Type and Number:
WIPO Patent Application WO2002088201
Kind Code:
A8
Abstract:
A process for forming a coordination catalyst system comprising substantially simultaneously contacting: (I) pre-catalysts reactants comprising (a) at least one first ligand; and (b) at least one first transition metal suitable to form at least one metallocene or constrained geometry pre-catalyst compound (e.g., rac-ethylene bis(indenyl)zirconium dichloride); and optionally (c) at least one second ligand and (d) at least one second transition metal suitable to form at least one non-metallocene, non-constrained geometry, bidentate or tridentate transition metal compound (e.g., tridentate 2,6-diacetylpyridine-bis (2, 4, 6-trimethylanaline) FeCl2); and (II) further contacting, jointly or individually, the pre-catalyst compound(s) and optional bidentate or tridentate compound(s) with at least one support-activator agglomerate (e.g., spray dried silica/clay agglomerate). When individually contacted, the supported catalyst components can be mixed or blended. The resulting transition metal catalyst systems are suitable for addition polymerization of unsaturated monomers, e.g., ethylene and propylene.
Inventors:
SHIH KENG-YU
Application Number:
PCT/US2002/011528
Publication Date:
December 24, 2003
Filing Date:
April 29, 2002
Export Citation:
Assignee:
GRACE W R & CO (US)
International Classes:
C08F4/02; C08F4/70; C08F10/00; C08F110/02; C08F4/659; C08F4/6592; C08F210/16; (IPC1-7): C08F10/02; C08F4/02; C08F4/70
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