Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
ULTRA-HIGH MOLECULAR WEIGHT POLYETHYLENE AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2022/161399
Kind Code:
A1
Abstract:
The present invention relates to an ultra-high molecular weight polyethylene and a preparation method therefor. The ultra-high molecular weight polyethylene has a viscosity average molecular weight of 1.5 to 10 million g/mol, a metal element content of 0 to 50 ppm, a bulk density of 0.30 to 0.55 g/cm 3, a true density of 0.900 to 0.940 g/cm 3, a melting point of 140 to 152°C, and a crystallinity of 40 to 75%, and the polyethylene meets at least one of the following conditions (1) and (2): (1) the tensile elastic modulus is greater than 250 MPa, preferably greater than 280 MPa, and more preferably greater than 300 MPa; and (2) the Young's modulus is greater than 300 MPa, and preferably greater than 350 MPa. The ultra-high molecular weight polyethylene has good mechanical properties, a high melting point, a low metal element content and an ash content, and the preparation method is simple and easy to operate, and flexible and adjustable, wherein the ultrahigh molecular weight ethylene copolymer has a high tensile elastic modulus.

More Like This:
WO/1995/018160METHOD OF PRODUCING ETHYLENE POLYMERS BY POLYMERIZATION IN SUSPENSION
JP2005538244Method for producing catalyst composition
JP2002522572[Title of Invention] Polymerization catalyst
Inventors:
LI CHUANFENG (CN)
WANG WENRUI (CN)
JING KUN (CN)
XING YUEJUN (CN)
XIA HUIMIN (CN)
CHEN MINGHUA (CN)
YOU ZHONGLIN (CN)
CHEN SHAOHUI (CN)
ZHAI JIANHONG (CN)
GUO FENG (CN)
YANG LIU (CN)
Application Number:
PCT/CN2022/074011
Publication Date:
August 04, 2022
Filing Date:
January 26, 2022
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
CHINA PETROLEUM & CHEM CORP (CN)
SINOPEC YANGZI PETROCHEMICAL CO LTD (CN)
International Classes:
C08F4/646; C08F210/16
Domestic Patent References:
WO2003010207A12003-02-06
Foreign References:
CN107936163A2018-04-20
CN102964471A2013-03-13
CN101654492A2010-02-24
CN102039184A2011-05-04
US20020045537A12002-04-18
CN107936161A2018-04-20
US20170283528A12017-10-05
CN102030844A2011-04-27
CN102952222A2013-03-06
US20030130448A12003-07-10
EP0574153A11993-12-15
US5026511A1991-06-25
US4968765A1990-11-06
CN200410054344A2004-09-08
CN200710042467A2007-06-22
CN200710042468A2007-06-22
US4962167A1990-10-09
US5587440A1996-12-24
CN201480057309A2014-10-24
CN201780000391A2017-03-06
CN201610892732A2016-10-13
CN201610892836A2016-10-13
CN201610892837A2016-10-13
CN201610892424A2016-10-13
CN200410024103A2004-05-13
CN201610747653A2016-08-29
CN01126323A2001-07-23
CN02110844A2002-02-09
Other References:
LI, CHUANFENG; ZUO, SHENGWU; GUO, FENG; MA, ZHONGLIN; MEI, LI: "Preparation of UHMWPE by supported non-metallocene catalysts", XIANDAI-SULIAO-JIAGONG-YINGYONG = MODERN PLASTICS PROCESSING AND APPLICATIONS / ZHONGGUO SHIHUA JITUAN GONGSI SULIAO JIAGONG, ZHONGGUO SHIYOU HUAGONG ZONGGONGSI YANGZI SHIYOU HUAGONG GONGSI, CN, vol. 21, no. 4, 1 January 2009 (2009-01-01), CN , pages 32 - 36, XP009182728, ISSN: 1004-3055
Attorney, Agent or Firm:
CHINA PATENT AGENT (H.K.) LTD. (CN)
Download PDF:
View/Download PDF      PDF Help



 
Previous Patent: PHASE NOISE COMPENSATION METHOD, TERMINAL DEVICE, AND NETWORK DEVICE

Next Patent: METHOD FOR CONTINUOUSLY PRODUCING ULTRA-HIGH MOLECULAR WEIGHT POLYETHYLENE BY USING SLURRY POLYMERIZ...