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Title:
ULTRA-HIGH MOLECULAR WEIGHT, ULTRA-FINE PARTICLE SIZE POLYETHYLENE, PREPARATION METHOD THEREFOR AND USE THEREOF
Document Type and Number:
WIPO Patent Application WO/2018/032744
Kind Code:
A1
Abstract:
Provided are an ultra-high molecular weight, ultra-fine particle size polyethylene, a preparation method therefor and a use thereof. The viscosity average molecular weight (Mv) of the polyethylene is greater than 1 × 106, and the polyethylene is spherical or sphere-like particles having a mean particle size of 10-100 µm, a standard deviation of 2-15 µm and a bulk density of 0.1-0.3 g/mL. Using the polyethylene as a basic polyethylene, a graft polyethylene can be obtained by means of a solid phase grafting method; and a glass fibre-reinforced polyethylene composition comprising the polyethylene and glass fibres, and a sheet or pipe prepared therefrom; a solubility-enhancing ultra-high molecular weight, ultra-fine particle size polyethylene; and a fibre and a film prepared from the solubility-enhancing ultra-high molecular weight, ultra-fine particle size polyethylene may also be obtained. The method has simple steps, is easy to control, has a relatively low cost and a high repeatability, and can realise industrialisation. The polyethylene of the present invention has both an ultra-high molecular weight range and an ultra-fine particle size range, and is particularly suitable for processing applications, greatly expanding the application field and the applicable range of an ultra-high molecular weight polyethylene.

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Inventors:
LI HUAYI (CN)
LI QIAN (CN)
SUN TONGBING (CN)
ZHU CAIZHEN (CN)
LIU RUIGANG (CN)
ZHAO NING (CN)
XU JIAN (CN)
Application Number:
PCT/CN2017/075495
Publication Date:
February 22, 2018
Filing Date:
March 02, 2017
Export Citation:
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Assignee:
INST CHEMISTRY CAS (CN)
International Classes:
C08F110/02; C08F4/658
Foreign References:
CN103772560A2014-05-07
CN1283642A2001-02-14
CN102015792A2011-04-13
CN103772537A2014-05-07
JP2015093929A2015-05-18
JP2015131880A2015-07-23
CN106319667A2017-01-11
CN106317273A2017-01-11
CN106279474A2017-01-04
CN106188785A2016-12-07
CN106188405A2016-12-07
CN106317562A2017-01-11
Other References:
See also references of EP 3489265A4
Attorney, Agent or Firm:
BEIJING ORIGINTELLIGENCE IP LAW FIRM (CN)
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