METHOD FOR PRODUCING CATALYST FOR POLYOLEFIN POLYMERIZATION AND METHOD FOR PREPARING POLYOLEFIN

WIPO Patent Application WO/2014/175495

A1

The present invention relates to a method for producing a catalyst for polyolefin polymerization, whereby the polymerization of low-density polyethylene is possible in one reactor even without the introduction of a separate comonomer, thereby producing a final product at low cost through a simplified process. Specifically, provided is a method for producing a catalyst for polyolefin polymerization, comprising the steps of: supporting an organo-chromium compound of chemical formula 1 on a metal oxide carrier; supporting a cocatalyst containing Group 13 metal on the metal oxide carrier supporting the organo-chromium compound; and supporting a metallocene catalyst on the metal oxide carrier supporting the organo-chromium compound and the cocatalyst. Further, provided is a method for preparing polyolefin, comprising a step of polymerizing olefin monomers in the presence of the catalyst for polyolefin polymerization obtained by the production method.

LEE YONG-HO (KR)
LEE KI-SOO (KR)
SONG EUN-KYOUNG (KR)
KWON HEON-YONG (KR)
CHO MIN-SEOK (KR)
HONG DAE-SIK (KR)
JEON MAN-SEONG (KR)
LIM KYOUNG-CHAN (KR)

PCT/KR2013/003996

October 30, 2014

May 08, 2013

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LG CHEMICAL LTD (KR)

C08F4/69; C08F4/02; C08F4/6592; C08F10/00

KR20070114696A	2007-12-04
KR19980064077A	1998-10-07
KR100590136B1	2006-06-15
US20080021180A1	2008-01-24
KR20020063198A	2002-08-01
KR20110000559A	2011-01-03

See also references of EP 2837640A4
J.AM.CHEM.SOC., vol. 125, 2003, pages 5272
IND. ENG. CHEM. RES., vol. 47, 2008, pages 5369

YOU ME PATENT AND LAW FIRM (649-10Yoksam-dong,Kangnam-ku, Seoul 135-080, KR)

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