JP2009026733A5 - - Google Patents

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JP2009026733A5
JP2009026733A5 JP2008013069A JP2008013069A JP2009026733A5 JP 2009026733 A5 JP2009026733 A5 JP 2009026733A5 JP 2008013069 A JP2008013069 A JP 2008013069A JP 2008013069 A JP2008013069 A JP 2008013069A JP 2009026733 A5 JP2009026733 A5 JP 2009026733A5
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porous membrane
multilayer porous
multilayer
less
membrane according
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JP4931083B2 (en
JP2009026733A (en
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ポリオレフィン樹脂多孔膜の少なくとも片面に、無機フィラーと樹脂バインダとを含む多孔層を備え、
前記ポリオレフィン樹脂多孔膜の、熱収縮応力の最大値が１０ｇ以下であることを特徴とする多層多孔膜。 Provided with a porous layer containing an inorganic filler and a resin binder on at least one side of the polyolefin resin porous membrane,
The multilayer porous membrane, wherein the polyolefin resin porous membrane has a maximum heat shrinkage stress of 10 g or less. 前記無機フィラーの平均粒径が０．１μｍ以上３．０μｍ以下である請求項１に記載の多層多孔膜。2. The multilayer porous membrane according to claim 1, wherein the inorganic filler has an average particle size of 0.1 μm to 3.0 μm. 前記樹脂バインダの、前記無機フィラーと前記樹脂バインダとの総量に占める割合が体積分率で０．５％以上８％以下である請求項１又は２に記載の多層多孔膜。The multilayer porous membrane according to claim 1 or 2, wherein a ratio of the resin binder to a total amount of the inorganic filler and the resin binder is 0.5% or more and 8% or less in terms of volume fraction. 前記多層多孔膜の総厚の、総層厚に占める割合が１５％以上５０％以下である請求項１〜３のいずれか１項に記載の多層多孔膜。The multilayer porous membrane according to any one of claims 1 to 3, wherein a ratio of the total thickness of the multilayer porous membrane to the total layer thickness is 15% or more and 50% or less. 前記多層多孔膜の透気度が１０秒／ｃｃ以上６５０秒／ｃｃ以下である請求項１〜４のいずれか１項に記載の多層多孔膜。The multilayer porous membrane according to any one of claims 1 to 4, wherein an air permeability of the multilayer porous membrane is 10 seconds / cc or more and 650 seconds / cc or less. 前記多層多孔膜の総厚が２μｍ以上２００μｍ以下である請求項１〜５のいずれか１項に記載の多層多孔膜。The multilayer porous membrane according to any one of claims 1 to 5, wherein a total thickness of the multilayer porous membrane is 2 µm or more and 200 µm or less. 前記樹脂バインダが、ケン化度８５％以上のポリビニルアルコールである請求項１〜６のいずれか１項に記載の多層多孔膜。The multilayer porous membrane according to any one of claims 1 to 6, wherein the resin binder is polyvinyl alcohol having a saponification degree of 85% or more. 前記多孔層に面する前記ポリオレフィン樹脂多孔膜表面の濡れ指数が４０ｍＮ／ｍ以上である請求項１〜７のいずれか１項に記載の多層多孔膜。The multilayer porous membrane according to any one of claims 1 to 7, wherein the polyolefin resin porous membrane surface facing the porous layer has a wetting index of 40 mN / m or more. 請求項１〜８のいずれか１項に記載の多層多孔膜を用いた非水電解液電池用セパレータ。 The separator for nonaqueous electrolyte batteries using the multilayer porous membrane of any one of Claims 1-8. 請求項９に記載の非水電解液電池用セパレータを用いた非水電解液電池。 A nonaqueous electrolyte battery using the separator for a nonaqueous electrolyte battery according to claim 9 . 請求項１〜８のいずれか１項に記載の多層多孔膜の製造方法であって、ポリオレフィン樹脂多孔膜の少なくとも片面に、無機フィラーと樹脂バインダとを含有する分散液を塗布することを特徴とする多層多孔膜の製造方法。 A method of manufacturing a multilayer porous membrane according to any one of the preceding claims, on at least one surface of the polyolefin resin porous membrane, characterized that you apply the dispersion containing an inorganic filler and a resin binder A method for producing a multilayer porous membrane.
JP2008013069A 2007-01-30 2008-01-23 Multilayer porous membrane and method for producing the same Active JP4931083B2 (en)

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JP2007019352 2007-01-30
JP2007019352 2007-01-30
JP2007161102 2007-06-19
JP2007161102 2007-06-19
JP2008013069A JP4931083B2 (en) 2007-01-30 2008-01-23 Multilayer porous membrane and method for producing the same

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JP2009026733A JP2009026733A (en) 2009-02-05
JP2009026733A5 true JP2009026733A5 (en) 2011-07-21
JP4931083B2 JP4931083B2 (en) 2012-05-16

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