SEPARATOR FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

Title:

SEPARATOR FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

Document Type and Number:

Japanese Patent JP2017160439

Kind Code:

A

Abstract:

PROBLEM TO BE SOLVED: To provide a coating liquid; a laminated porous film; and a method for producing the laminated porous film.SOLUTION: There are provided a laminated porous film in which a coating liquid contains a binder resin, a filler and a medium, the filler is a mixture of a filler (a) having a specific area of 7-80 m/g and a filler (b) having a specific area of 2-7 m/g so that a weight ratio of the filler (a) to the filler (b) is 5:95 to 40:60, a laminated porous film is formed by laminating a heat-resistant layer on one surface or both surfaces of the base material porous film, where the heat-resistant layer is a layer formed by removing a medium from the coating liquid; and a method for producing a laminated porous film formed by laminating a heat-resistant layer containing a filler and a binder resin on one surface or both surfaces of the base material porous film including a step of removing a medium from the coating liquid to form a heat-resistant layer.SELECTED DRAWING: None

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Inventors:

SHINODA HIROSHI
HASEGAWA HIROHIKO

Application Number:

JP2017065494A

Publication Date:

September 14, 2017

Filing Date:

March 29, 2017

Export Citation:

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Assignee:

SUMITOMO CHEMICAL CO

International Classes:

C09D201/00; B32B5/18; B32B23/08; B32B27/32; C09D7/61; C09D101/10; C09D101/28; C09D103/02; C09D105/04; C09D129/04; H01M50/403; H01M50/417; H01M50/429; H01M50/431; H01M50/443; H01M50/449; H01M50/489; H01M50/491

Domestic Patent References:

JP2000195492A	2000-07-14
JP6121117B2	2017-04-26
JP2011215217A	2011-10-27
JPH04146521A	1992-05-20
JP2010123383A	2010-06-03
JP2002294590A	2002-10-09
JP2004130738A	2004-04-30

Foreign References:

WO2008123331A1

2008-10-16

Attorney, Agent or Firm:

Hisashi Kato
Takashi Kuboyama
Keita Tohsaka
Hiroshi Mori
Toru Minase

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