Title:
METHODS OF POLYMERIZING OLEFIN MONOMERS WITH MIXED CATALYST SYSTEMS
Document Type and Number:
WIPO Patent Application WO2004085488
Kind Code:
A3
Abstract:
A method of transitioning catalysts for polyolefin polymerization is provided. In one aspect, the process includes providing a polymerization reactor that includes a first catalyst system, contacting olefin monomers with the first catalyst system for form polyolefin in a first polymerization reaction and introducing a catalyst killer to the polymerization reactor in an amount sufficient to terminate the first polymerization reaction. The method further includes introducing a second catalyst system to the polymerization reactor in the presence of at least a portion of the catalyst killer, wherein the at least a portion of the catalyst killer is an amount sufficient to activate the second catalyst system and contacting olefin monomers with the second catalyst system to form polyolefin in a second polymerization reaction.
Inventors:
KINNAN MICHAEL A
EHRMAN FRED D
SHIRODKAR PRADEEP P
DAVIS MARK B
GRIEF-RUST MICHELE L
EHRMAN FRED D
SHIRODKAR PRADEEP P
DAVIS MARK B
GRIEF-RUST MICHELE L
Application Number:
PCT/US2004/006323
Publication Date:
November 25, 2004
Filing Date:
March 03, 2004
Export Citation:
Assignee:
UNIVATION TECH LLC (US)
International Classes:
C08F2/00; C08F2/38; C08F4/06; C08F10/00; C08F4/659; C08F4/6592; C08F210/16; (IPC1-7): C08F2/00; C08F2/38; C08F4/06
Foreign References:
| US5672666A | 1997-09-30 |
Other References:
See also references of EP 1620472A4
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