COAT SOLUTION AND LAYERED POROUS FILM

WIPO Patent Application WO/2015/111230

A1

The invention relates to a layered porous film having a heat-resistant layer that is suitable for use in a separator for a non-aqueous electrolytic solution secondary battery having excellent cycle characteristics, and to a coat solution for forming the heat-resistant layer. The coat solution contains a filler, a binder and a solvent, the hydrophilicity parameter A of the filler as defined by formula (1) being 0.35 to 0.65. Hydrophilicity parameter A = BET1/BET2 ･････ (1) BET1: Specific surface area of the filler calculated using the BET method, from a difference adsorption isotherm obtained by subtracting a secondary adsorption isotherm from a primary adsorption isotherm measured by adsorbing water vapor onto the filler BET2: Specific surface area of the filler calculated using the BET method, from an adsorption isotherm measured by adsorbing nitrogen onto the filler

JPH0618915	[Title of the Invention] A method for producing a microporous polyethylene film.
JP5501233	Poly 4-methyl-1-pentene resin composition, film containing it, microporous film, battery separator and lithium ion battery
JP7288917	SOLID ELECTROLYTE MEMBRANE, MANUFACTURING METHOD THEREOF, AND ALL-SOLID BATTERY INCLUDING THE SAME

SUZUKI JUNJI (JP)
SUGAWARA KENICHIRO (JP)
SEMBARA MASATERU (JP)

PCT/JP2014/052369

July 30, 2015

January 27, 2014

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SUMITOMO CHEMICAL CO (JP)

H01M50/417; H01M50/451; H01M50/491

JP2011216257A	2011-10-27
JP2010150090A	2010-07-08

"Evaluation of a surface characteristic by a steam absorption isothermal line TN 249", XP055214915, Retrieved from the Internet [retrieved on 20140219]

NAKAYAMA, Tohru et al. (JP)
Nakayama 亨 (JP)

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