Title:
CATALYST FOR PREPARING EXTRA-HIGH TO ULTRA-HIGH MOLECULAR WEIGHT POLYETHYLENE
Document Type and Number:
WIPO Patent Application WO/2021/259337
Kind Code:
A9
Abstract:
Provided in the present invention are extra-high to ultra-high molecular weight polyethylene particles and a catalyst for preparing same. Specifically, provided in the present invention is particles having the following characteristics: (a) a viscosity-average molecular weight ranging from 50 to 10 millions; (b) at least 95% of the particles in weight ratio passing through a 150 micron mesh sieve, in which the median particle diameter (d50) is 40 μm ≤ d50 ≤ 80 μm; (c) the branched chain content of backbone carbon atoms being less than 1/100,000C; and (d) primary crystallinity > 70%, and secondary crystallinity > 55%. Also provided in the present invention are a special catalyst for preparing such high molecular weight polyethylene particles and a preparation method therefor, and an extra-high to ultra-high molecular weight polyethylene prepared by using said catalyst.
Inventors:
ZHU BENHU (CN)
SU WEI (CN)
ZHOU JIAOLONG (CN)
TANG YONG (CN)
TAN KAI (CN)
LI JUNFANG (CN)
PENG AIQING (CN)
SUN XIULI (CN)
SU WEI (CN)
ZHOU JIAOLONG (CN)
TANG YONG (CN)
TAN KAI (CN)
LI JUNFANG (CN)
PENG AIQING (CN)
SUN XIULI (CN)
Application Number:
PCT/CN2021/101907
Publication Date:
February 10, 2022
Filing Date:
June 23, 2021
Export Citation:
Assignee:
SHANGHAI INST ORGANIC CHEMISTRY CAS (CN)
International Classes:
C08F10/00; C08F4/649
Attorney, Agent or Firm:
XU&PARTNERS, LLC. (CN)
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