Title:
MULTILAYER POROUS MEMBRANE
Document Type and Number:
WIPO Patent Application WO/2021/006357
Kind Code:
A1
Abstract:
Provided is a multilayered porous membrane that comprises a porous membrane containing polyolefin resin as the main component thereof, and that comprises a porous layer layered on at least one surface of the porous membrane and containing inorganic particles and a binder polymer. The total thickness of the porous layer is 0.5-3.0 μm; the number of pores in the porous layer having an area for the individual pore of at least 0.001 μm2 is 65-180 per 10 μm2 of the field of observation; of the pores in the porous layer that have an area of at least 0.001 μm2, the proportion therein of pores in the range from 0.001 μm2 to 0.05 μm2 is at least 90%; the proportion taken up by the inorganic particles in the porous layer is from 90-99 mass%; and the aspect ratio of the inorganic particles is from 1.0-3.0.
Inventors:
UCHIDA YUKI (JP)
MACHIDA NAOKI (JP)
HOSOKIBARA ATSUSHI (JP)
KAWAGUCHI RYOMA (JP)
KATAGIRI TAKESHI (JP)
MACHIDA NAOKI (JP)
HOSOKIBARA ATSUSHI (JP)
KAWAGUCHI RYOMA (JP)
KATAGIRI TAKESHI (JP)
Application Number:
PCT/JP2020/027149
Publication Date:
January 14, 2021
Filing Date:
July 10, 2020
Export Citation:
Assignee:
ASAHI CHEMICAL IND (JP)
International Classes:
B32B5/32; B32B27/20; B32B27/32; H01M10/052; H01M10/0583
Domestic Patent References:
| WO2018079474A1 | 2018-05-03 | |||
| WO2010134585A1 | 2010-11-25 | |||
| WO2014148577A1 | 2014-09-25 | |||
| WO2013147071A1 | 2013-10-03 |
Foreign References:
| JP2014508662A | 2014-04-10 | |||
| JP2010092881A | 2010-04-22 | |||
| JP2016139490A | 2016-08-04 | |||
| JP2018195564A | 2018-12-06 | |||
| JP2009518809A | 2009-05-07 | |||
| JP2015181110A | 2015-10-15 | |||
| JP2016139490A | 2016-08-04 | |||
| JP2010015917A | 2010-01-21 | |||
| JP2013008481A | 2013-01-10 |
Other References:
See also references of EP 3998155A4
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
Download PDF: