Title:
POLYOLEFIN MICROPOROUS MEMBRANE, PRODUCTION METHOD FOR POLYOLEFIN MICROPOROUS MEMBRANE, BATTERY SEPARATOR, AND BATTERY
Document Type and Number:
WIPO Patent Application WO/2017/170288
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a polyolefin microporous membrane that makes it possible to achieve a low shutdown temperature while keeping air resistance sufficiently low. At least one portion of at least one surface of this polyolefin microporous membrane is formed from an aggregate of a plurality of curved leaf-shaped structures that comprise a polyolefin resin or a polyolefin resin composition and that are irregularly bonded to each other. The surface roughness of the portion(s) of the surface(s) at which the aggregate is formed is 40 nm or higher.
Inventors:
KATADA IKKI (JP)
KANEKO KENJI (JP)
NOMURA FUMIYASU (JP)
KANEKO KENJI (JP)
NOMURA FUMIYASU (JP)
Application Number:
PCT/JP2017/012190
Publication Date:
October 05, 2017
Filing Date:
March 24, 2017
Export Citation:
Assignee:
TORAY INDUSTRIES (JP)
International Classes:
C08J9/28; C08J9/00; C08L23/06; H01M50/409; H01M50/489; H01M50/491
Domestic Patent References:
| WO2014076994A1 | 2014-05-22 | |||
| WO2007010878A1 | 2007-01-25 | |||
| WO2000020493A1 | 2000-04-13 |
Foreign References:
| JP2010540744A | 2010-12-24 | |||
| JPH06240036A | 1994-08-30 | |||
| JP2012500130A | 2012-01-05 | |||
| JP2011526547A | 2011-10-13 |
Attorney, Agent or Firm:
NISHI, Kazuya et al. (JP)
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