Title:
POLYETHYLENE COMPOSITION AND USE THEREOF, AND POLYOLEFIN MICROPOROUS BREATHABLE FILM PREPARED THEREFROM
Document Type and Number:
WIPO Patent Application WO/2023/072254
Kind Code:
A1
Abstract:
A polyethylene composition and the use thereof, and a polyolefin microporous breathable film prepared therefrom. The polyethylene composition comprises a polyethylene matrix resin and a pore-forming agent, wherein the content of the pore-forming agent is 30-110 parts by weight on the basis of 100 parts by weight of the polyethylene matrix resin, the pore-foaming agent comprises maleic anhydride copolymer microspheres, a copolymer in the microsphere comprises a structural unit A from maleic anhydride, a structural unit B from a vinyl-containing comonomer M and an optional cross-linking structure unit from a cross-linking agent, and the average particle size of the maleic anhydride copolymer microspheres is 500-2000 nm. The polyethylene composition can be used for preparing a breathable film without using a coupling agent, a dispersing agent and/or a surfactant, and achieves uniform air permeability and a high water vapor transmission rate. The film can be used for breathable composite products such as sanitary products, medical products, and food packaging or building products.
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Inventors:
ZHANG YARU (CN)
SONG WENBO (CN)
LIU ZHENJIE (CN)
CHU LIQIU (CN)
ZHAGN XIAOMENG (CN)
LI JUAN (CN)
LI JIE (CN)
KANG PENG (CN)
SONG WENBO (CN)
LIU ZHENJIE (CN)
CHU LIQIU (CN)
ZHAGN XIAOMENG (CN)
LI JUAN (CN)
LI JIE (CN)
KANG PENG (CN)
Application Number:
PCT/CN2022/128276
Publication Date:
May 04, 2023
Filing Date:
October 28, 2022
Export Citation:
Assignee:
CHINA PETROLEUM & CHEM CORP (CN)
BEIJING RES INST CHEMICAL IND CHINA PETROLEUM & CHEMICAL CORP (CN)
BEIJING RES INST CHEMICAL IND CHINA PETROLEUM & CHEMICAL CORP (CN)
International Classes:
C08L23/08; C08J9/00; C08K5/103; C08K5/134; C08K5/526; C08L35/00
Foreign References:
| CN111849055A | 2020-10-30 | |||
| US20040253442A1 | 2004-12-16 | |||
| CN110982171A | 2020-04-10 | |||
| CN112708021A | 2021-04-27 |
Attorney, Agent or Firm:
CCPIT PATENT AND TRADEMARK LAW OFFICE (CN)
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