Title:
METHOD FOR HOMOPOLYMERIZATION AND RANDOM COPOLYMERIZATION OF PROPYLENE
Document Type and Number:
WIPO Patent Application WO/2019/090882
Kind Code:
A1
Abstract:
Disclosed is a method for the homopolymerization and the random copolymerization of propylene, comprising: (1) subjecting a liquid phase propylene comprising a polymerization catalyst to a prepolymerization of propylene, to obtain a feedstock slurry liquid containing a propylene prepolymer, wherein the polymerization temperature is 40ºC-50ºC, the prepolymerization pressure is 3.2-3.9 MpaG, and the olefin polymerization catalyst is 0.04-0.06% wt% of the liquid phase propylene; (2) mixing the feedstock slurry liquid, recovered liquid phase propylene and recovered and recycled hydrogen gas into a liquid phase polymeric raw material; (3) subjecting the liquid phase polymeric raw material to a liquid phase homopolymerization of propylene, or a liquid phase copolymerization with ethylene, continuously introducing the resulting slurry liquid into a gas phase polymerization reactor for a gas phase homopolymerization of propylene or a gas phase copolymerization of propylene with ethylene, to obtain a propylene homopolymer or a random copolymer.
Inventors:
LI ZEMIN (CN)
LIU LIXIN (CN)
CHEN HONG (CN)
LIU LIYAN (CN)
WU XIA (CN)
ZHANG YI (CN)
LIU LIXIN (CN)
CHEN HONG (CN)
LIU LIYAN (CN)
WU XIA (CN)
ZHANG YI (CN)
Application Number:
PCT/CN2017/115397
Publication Date:
May 16, 2019
Filing Date:
December 11, 2017
Export Citation:
Assignee:
BEIJING HUAFU ENG CO LTD (CN)
International Classes:
C08F2/00; C08F10/06; C08F110/06; C08F210/06
Foreign References:
| CN102272166A | 2011-12-07 | |||
| CN103788258A | 2014-05-14 | |||
| CN103772571A | 2014-05-07 |
Attorney, Agent or Firm:
RUNPING & PARTNERS (CN)
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