HOLLOW CONTAINER BLOW MOLDING MATERIAL, AND PREPARATION METHOD THEREFOR AND USE THEREOF

WIPO Patent Application WO/2023/124790

A1

The present invention provides a hollow container blow molding material, and a preparation method therefor and the use thereof. The preparation method comprises: introducing a first portion of ethylene into a first reactor, and subjecting same to a first polymerization reaction in the presence of a titanium catalyst and hydrogen to generate polyethylene with a melt index of 100 g/10 min to 200 g/10 min; and transferring the material in the first reactor into a second reactor, adding a monomer raw material containing a second portion of ethylene into the second reactor, and subjecting the material in the second reactor to a second polymerization reaction in the presence of hydrogen to prepare the hollow container blow molding material with a melt index of 1.0 g/10 min to 2.0 g/10 min. The present invention can improve the environment stress cracking resistance and other performances of the hollow container blow molding material.

JPH07233212	OLEFIN POLYMERIZATION CATALYST AND OLEFIN POLYMERIZATION
WO/1991/014714	SUPPORTED POLYMERIZATION CATALYST
JP4410941	Slurry polymerization method using non-supported phosphine imine catalyst

GAO KEJING (CN)
LI SHUANHONG (CN)
ZHANG LIYANG (CN)
WANG YISEN (CN)
ZHU WENQIN (CN)
ZHOU JINGSHENG (CN)
HE SHENGBAO (CN)
HU JIE (CN)
LI BING (CN)
REN XIAOBING (CN)

PCT/CN2022/136460

July 06, 2023

December 05, 2022

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PETROCHINA CO LTD (CN)

C08F4/642; C08F210/02; C08F4/646; C08F110/02; C08F210/08

CN114133489A	2022-03-04
CN1392190A	2003-01-22
CN103113499A	2013-05-22
CN112724301A	2021-04-30
CN112745408A	2021-05-04
JP2006131814A	2006-05-25
US20090253863A1	2009-10-08
CN1190615A	1998-08-19

LEADER PATENT & TRADEMARK FIRM (CN)

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