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Title:
POLYOLEFIN MICROPOROUS MEMBRANE
Document Type and Number:
WIPO Patent Application WO/2020/179101
Kind Code:
A1
Abstract:
A polyolefin microporous membrane which has a loss tangent (tanδ) of 0.35 or more but less than 0.60 at 230°C as determined by melt viscoelasticity measurement.

Inventors:
YAMASHITA AKIHISA (JP)
SEKIGUCHI MANABU (JP)
Application Number:
PCT/JP2019/031755
Publication Date:
September 10, 2020
Filing Date:
August 09, 2019
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Assignee:
ASAHI CHEMICAL IND (JP)
International Classes:
C08J9/28; C08J5/18; C08J9/26; H01M50/409; H01M50/491; H01M50/494
Domestic Patent References:
WO2009136648A12009-11-12
WO2008069216A12008-06-12
WO2007069560A12007-06-21
Foreign References:
JP2018141029A2018-09-13
JP2017142985A2017-08-17
JP2014162851A2014-09-08
JP2011225736A2011-11-10
JP2017128639A2017-07-27
JP2017203145A2017-11-16
JPS5250261B21977-12-23
JP3995471B22007-10-24
Other References:
See also references of EP 3816217A4
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
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