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Title:
SUPPORTED METALLOCENE CATALYST, METHOD FOR PREPARING THE SAME AND METHOD FOR PREPARING POLYOLEFIN USING THE SAME
Document Type and Number:
WIPO Patent Application WO/2011/111980
Kind Code:
A2
Abstract:
Provided are a supported metallocene catalyst, a method for preparing the same and a method for preparing polyolefin using the same. Specifically, provided are a supported metallocene catalyst including a carrier, a first co-catalyst layer laminated on the carrier, a first metallocene compound layer laminated on the first co-catalyst layer, and a second co-catalyst layer laminated on the first metallocene compound layer, a method for preparing the same and a method for preparing polyolefin using the same. The supported metallocene catalyst prepared by incorporating a metallocene compound having a ligand substituted with alkoxide or aryloxide into a conventional supported metallocene catalyst and incorporating a borate compound as a second co-catalyst exhibits considerably superior catalyst activity and easily controls molecular weight distribution, as compared to the conventional metallocene-supported catalyst.

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WO/2002/070569OLEFIN POLYMERIZATION CATALYST COMPONENT AND CATALYST SYSTEM AND POLYMERIZATION PROCESS USING SUCH A CATALYST SYSTEM
Inventors:
KWON HYUCK-JU (KR)
HWANG SAN-AK (KR)
LEE DONG-GIL (KR)
PARK CHURL-YOUNG (KR)
Application Number:
PCT/KR2011/001591
Publication Date:
September 15, 2011
Filing Date:
March 08, 2011
Export Citation:
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Assignee:
LG CHEMICAL LTD (KR)
KWON HYUCK-JU (KR)
HWANG SAN-AK (KR)
LEE DONG-GIL (KR)
PARK CHURL-YOUNG (KR)
International Classes:
C08F4/6592; C08F4/02; C08F4/642; C08F10/00
Domestic Patent References:
WO2002040549A22002-05-23
WO2006025709A12006-03-09
WO2008042059A12008-04-10
Foreign References:
US5324800A1994-06-28
KR100404780B12003-11-07
JPH0656928A1994-03-01
JP2008121027A2008-05-29
US20060116490A12006-06-01
Other References:
A. ANDERSON; J. G. CORDE; J. HERWIG; W. KAMINSKY; A. MERCK; R. MOTTWEILER; J. PEIN; H. SINN; H. J. VOLLMER, ANGEW. CHEM. INT. ED. ENGL., vol. 15, 1976, pages 630
JOURNAL OF MOLECULAR CATALYSIS A: CHEMICAL, vol. 156, 2000, pages 133 - 141
TETRAHEDRON LETT., 1988, pages 2951
See also references of EP 2545084A4
Attorney, Agent or Firm:
CHO, In-Je (11th Fl. Unik Bldg., #706-13, Yeoksam-dong, Gangnam-gu, Seoul 135-918, KR)
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