Title:
POROUS FILM, SEPARATOR FOR SECONDARY BATTERY, AND SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2021/200648
Kind Code:
A1
Abstract:
The present invention provides, inexpensively, a porous film that has superior thermal dimensional stability, adhesiveness to electrodes, and battery properties. This porous film has a porous substrate and a porous layer that contains particles A on at least one surface of the porous substrate. The particles A have a mixture containing a polymer that comprises fluorine-containing (meth)acrylate monomers and a polymer that comprises monomers having two or more reactive groups per molecule, or have a copolymer containing fluorine-containing (meth)acrylate monomers and monomers that have two or more reactive groups per molecule. The monomers having two or more reactive groups per molecule are contained in the particles A in an amount ranging from greater than 10 wt% to not more than 30 wt%, where all constituent components of the particles A are assumed to constitute 100 wt%.
Inventors:
KAI NOBUYASU (JP)
KAMON KEIICHI (JP)
TANAKA HIROKO (JP)
TSUKUDA AKIMITSU (JP)
IMAZU NAOKI (JP)
KAMON KEIICHI (JP)
TANAKA HIROKO (JP)
TSUKUDA AKIMITSU (JP)
IMAZU NAOKI (JP)
Application Number:
PCT/JP2021/012848
Publication Date:
October 07, 2021
Filing Date:
March 26, 2021
Export Citation:
Assignee:
TORAY INDUSTRIES (JP)
International Classes:
H01M50/42; B32B5/32; C08F220/24; H01M50/443; H01M50/449; H01M50/451; H01M50/489
Domestic Patent References:
| WO2013125645A1 | 2013-08-29 | |||
| WO2015064411A1 | 2015-05-07 | |||
| WO2018034094A1 | 2018-02-22 |
Foreign References:
| JP6191597B2 | 2017-09-06 |
Attorney, Agent or Firm:
SEIRYU PATENT PROFESSIONAL CORPORATION et al. (JP)
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