Title:
MULTILAYER POROUS FILM AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2013/015228
Kind Code:
A1
Abstract:
The present invention provides a multilayer porous film and a nonaqueous electrolyte secondary battery. The multilayer porous film is obtained by laminating a heat-resistant layer that contains a binder resin and a filler and a porous base film that is mainly composed of a polyolefin. Not less than 70% by weight of the binder resin is composed of a polymer that has an alicyclic hydrocarbon group, and the weight ratio of the filler is 20 or more when the total weight of the binder resin is taken as 1. The nonaqueous electrolyte secondary battery contains the multilayer porous film as a separator.
Inventors:
SHINODA HIROSHI (JP)
HASEGAWA HIROHIKO (JP)
SHINOHARA YASUO (JP)
HASEGAWA HIROHIKO (JP)
SHINOHARA YASUO (JP)
Application Number:
PCT/JP2012/068533
Publication Date:
January 31, 2013
Filing Date:
July 13, 2012
Export Citation:
Assignee:
SUMITOMO CHEMICAL CO (JP)
SHINODA HIROSHI (JP)
HASEGAWA HIROHIKO (JP)
SHINOHARA YASUO (JP)
SHINODA HIROSHI (JP)
HASEGAWA HIROHIKO (JP)
SHINOHARA YASUO (JP)
International Classes:
B32B27/32; B32B5/18; B32B23/08; B32B27/20; B32B27/30; H01M10/0566; H01M50/414; H01M50/417; H01M50/449; H01M50/489; H01M50/491
Foreign References:
| JP2011110704A | 2011-06-09 | |||
| JP2009224343A | 2009-10-01 | |||
| JP2008508391A | 2008-03-21 |
Attorney, Agent or Firm:
NAKAYAMA, Tohru et al. (JP)
Nakayama δΊ¨ (JP)
Nakayama δΊ¨ (JP)
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Claims: