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Title:
POLYPROPYLENE GRAFT CONTAINING ANHYDRIDE GROUP AND PREPARATION METHOD FOR POLYPROPYLENE GRAFT
Document Type and Number:
WIPO Patent Application WO/2021/218102
Kind Code:
A1
Abstract:
A polypropylene graft containing an anhydride group and used for insulating materials and a preparation method for the polypropylene graft. The polypropylene graft containing the anhydride group comprises a structural unit derived from copolymer polypropylene, a structural unit derived from an anhydride monomer, and a structural unit derived from an alkenyl-containing polymerized monomer; by taking the weight of the polypropylene graft containing the anhydride group as a reference, the content of the structural units, in the polypropylene graft containing the anhydride group, which are derived from the anhydride monomer and the alkenyl-containing polymerized monomer and are in grafted state is 0.1-5 wt%; moreover, in the polypropylene graft containing the anhydride group, the molar ratio of the structural unit derived from the anhydride monomer to the structural unit derived from the alkenyl-containing polymerized monomer is 1:1-20; the copolymer polypropylene has at least one of the following characteristics: the comonomer content is 0.5-40 mol%, the content of a xylene soluble matter is 2-80 wt%, the comonomer content in the soluble matter is 10-70 wt%, and the intrinsic viscosity number ratio of the soluble matter to the polypropylene is 0.3-5. The polypropylene graft containing the anhydride group can give consideration to both mechanical and electrical properties at a high working temperature.

Inventors:
SONG WENBO (CN)
HE JINLIANG (CN)
YUAN HAO (CN)
SHAO QING (CN)
LI QI (CN)
SHI HONGWEI (CN)
ZHANG QI (CN)
LI JUAN (CN)
WANG YUTAO (CN)
HU JUN (CN)
ZOU FASHENG (CN)
ZHOU YAO (CN)
Application Number:
PCT/CN2020/127465
Publication Date:
November 04, 2021
Filing Date:
November 09, 2020
Export Citation:
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Assignee:
CHINA PETROLEUM & CHEM CORP (CN)
BEIJING RES INST CHEMICAL IND CHINA PETROLEUM & CHEMICAL CORP (CN)
UNIV TSINGHUA (CN)
International Classes:
C08F255/02; C08F222/06; C08F255/04; H01B3/30; H01B7/02
Foreign References:
CN104327767A2015-02-04
CN101519478A2009-09-02
CN104193903A2014-12-10
CN106279544A2017-01-04
CN101492517A2009-07-29
CN106317334A2017-01-11
US20040087720A12004-05-06
EP1101779A12001-05-23
CN1081683A1994-02-09
CN1108315A1995-09-13
CN1228096A1999-09-08
CN1281380A2001-01-24
CN1132865C2003-12-31
CN102020733A2011-04-20
CN106543369A2017-03-29
CN104499281A2015-04-08
CN102108112A2011-06-29
CN109251270A2019-01-22
CN1884326A2006-12-27
CN101492517A2009-07-29
Other References:
ZHANG GUANGPING: "Solid-phase grafting of maleic anhydride onto polypropylene in helical ribbon reactor", CHINA PLASTICS, vol. 16, no. 2, February 2002 (2002-02-01), pages 69 - 71
Attorney, Agent or Firm:
CCPIT PATENT AND TRADEMARK LAW OFFICE (CN)
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