Coating liquid, laminated porous film, and method for producing laminated porous film
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United States of America Patent
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Jun 13, 2017
Grant Date -
Nov 6, 2014
app pub date -
Aug 23, 2012
filing date -
Aug 31, 2011
priority date (Note) -
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Abstract
The present invention provides a coating liquid, a laminated porous film and a method for producing a laminated porous film. The coating liquid comprises a binder resin, a filler and a medium, wherein the filler is a mixture comprising (a) a filler having a specific surface area of not less than 7 m2/g and not more than 80 m2/g and (b) a filler having a specific surface area of not less than 3 m2/g and not more than 6 m2/g in a filler (a) to filler (b) weight ratio of from 5:95 to 40:60. The laminated porous film is a laminated porous film in which a heat-resistant layer is laminated on one or both of the surfaces of a porous film substrate, wherein the heat-resistant layer is a heat-resistant layer formed by removing the medium from the coating liquid.
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