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Title:
ETHYLENE-PROPYLENE COPOLYMERIZATION CATALYST COMPOSITION, AND PREPARATION AND USE THEREOF
Document Type and Number:
WIPO Patent Application WO/2023/240961
Kind Code:
A1
Abstract:
An olefin polymerization catalyst composition, comprising a main catalyst, a cocatalyst and a magnesium compound carrier. The magnesium compound carrier is selected from Mg(ORI)(ORII), wherein RI and RII are the same or different, and are C1-C8 hydrocarbyl groups; the cocatalyst is a Lewis acid (LA); and the main catalyst is a metallocene complex represented by general formula (I). Further disclosed in the present invention are preparation and a use of the composition. The composition of the present invention may significantly mitigate the problem of device clogging. A magnesium alkoxide carrier has a large pore volume and pore diameter and has abundant pores inside, and is suitable for ethylene-propylene copolymerization production, and it is conducive to generating a large amount of ethylene-propylene rubber in the pores, thereby greatly increasing the ethylene-propylene rubber content in a copolymer, and improving the copolymerization activity.

Inventors:
LI XINLE (CN)
LI HUASHU (CN)
XIN SHIXUAN (CN)
ZHOU YI (CN)
HU HONGFAN (CN)
SUN XIN (CN)
ZHANG XUEQIN (CN)
LI YANG (CN)
HU CAIZHONG (CN)
Application Number:
PCT/CN2022/138923
Publication Date:
December 21, 2023
Filing Date:
December 14, 2022
Export Citation:
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Assignee:
PETROCHINA CO LTD (CN)
International Classes:
C08F4/02; C07C31/28; C07F17/00; C08F4/00; C08F10/00
Foreign References:
CN105985368A2016-10-05
CN104592427A2015-05-06
CN101160329A2008-04-09
JPH11199612A1999-07-27
Attorney, Agent or Firm:
BEIJING SANYOU INTELLECTUAL PROPERTY AGENCY LTD. (CN)
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