JP2006027024A5 - - Google Patents

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Publication number
JP2006027024A5
JP2006027024A5 JP2004207742A JP2004207742A JP2006027024A5 JP 2006027024 A5 JP2006027024 A5 JP 2006027024A5 JP 2004207742 A JP2004207742 A JP 2004207742A JP 2004207742 A JP2004207742 A JP 2004207742A JP 2006027024 A5 JP2006027024 A5 JP 2006027024A5
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Japan
Prior art keywords
porous membrane
less
melting point
multilayer
weight
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Pending
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JP2004207742A
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Japanese (ja)
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JP2006027024A (en
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Priority to JP2004207742A priority Critical patent/JP2006027024A/en
Priority claimed from JP2004207742A external-priority patent/JP2006027024A/en
Publication of JP2006027024A publication Critical patent/JP2006027024A/en
Publication of JP2006027024A5 publication Critical patent/JP2006027024A5/ja
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Claims (6)

融点が１５０℃未満であるポリオレフィン樹脂を含有する多孔膜（Ａ）と融点が１７０℃以上、あるいは融点を有さない非晶構造の樹脂の場合はその熱分解温度が１７０℃以上である耐熱性樹脂からなる多孔膜（Ｂ）との積層体であって、多孔膜（Ａ）の最大収縮力が３５ｍＮ以下であり、多孔膜（Ｂ）の１６０℃におけるプロピレンカーボネートへの溶解率が５０重量％未満であることを特徴とする多層多孔膜。 In the case of a porous membrane (A) containing a polyolefin resin having a melting point of less than 150 ° C and a melting point of 170 ° C or higher, or a non- crystalline resin having no melting point, the thermal decomposition temperature is 170 ° C or higher . A laminate with a porous membrane (B) made of a resin, wherein the maximum shrinkage force of the porous membrane (A) is 35 mN or less, and the solubility of the porous membrane (B) in propylene carbonate at 160 ° C. is 50% by weight. A multilayer porous membrane characterized by being less than. １６０℃におけるプロピレンカーボネートへの溶解率が２０重量％未満であることを特徴とする、請求項１記載の多層多孔膜。 The multilayer porous membrane according to claim 1, wherein the solubility in propylene carbonate at 160 ° C is less than 20% by weight. 多孔膜（Ｂ）がポリケトンからなる多孔膜であることを特徴とする、請求項１または２記載の多層多孔膜。   The multilayer porous membrane according to claim 1 or 2, wherein the porous membrane (B) is a porous membrane made of polyketone. 多孔膜（Ｂ）がポリフッ化ビニリデンを電子線照射したものからなる多孔膜であることを特徴とする、請求項１または２記載の多層多孔膜。   The multilayer porous film according to claim 1 or 2, wherein the porous film (B) is a porous film made of polyvinylidene fluoride irradiated with an electron beam. 融点が１７０℃以上あるいは融点を有さない非晶構造の樹脂の場合はその熱分解温度が１７０℃以上である耐熱性樹脂を、良溶媒または良溶媒と貧溶媒の混合溶媒に均一に溶解し、当該溶解液を融点が１５０℃未満であるポリオレフィンを含有する多孔膜（Ａ）の少なくとも片表面に塗布した後、相転換法を経て、１６０℃におけるプロピレンカーボネートへの溶解率が５０重量％未満の多孔膜（B）を形成することを特徴とする多層多孔膜の製造方法。  In the case of a non-crystalline resin having a melting point of 170 ° C. or higher, a heat-resistant resin having a thermal decomposition temperature of 170 ° C. or higher is uniformly dissolved in a good solvent or a mixed solvent of a good solvent and a poor solvent. The solution is applied to at least one surface of the porous membrane (A) containing a polyolefin having a melting point of less than 150 ° C., and then subjected to a phase conversion method, and the dissolution rate in propylene carbonate at 160 ° C. is less than 50% by weight. A method for producing a multilayer porous membrane comprising forming the porous membrane (B). 耐熱性樹脂の１６０℃におけるプロピレンカーボネートへの溶解率が３０重量％未満であることを特徴とする、請求項５記載の多層多孔膜の製造方法。  6. The method for producing a multilayer porous membrane according to claim 5, wherein the heat-resistant resin has a solubility in propylene carbonate at 160 ° C. of less than 30% by weight.
JP2004207742A 2004-07-14 2004-07-14 Multi-layer porous film Pending JP2006027024A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2004207742A JP2006027024A (en) 2004-07-14 2004-07-14 Multi-layer porous film

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Application Number Priority Date Filing Date Title
JP2004207742A JP2006027024A (en) 2004-07-14 2004-07-14 Multi-layer porous film

Publications (2)

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JP2006027024A JP2006027024A (en) 2006-02-02
JP2006027024A5 true JP2006027024A5 (en) 2007-08-09

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Families Citing this family (22)

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WO2008034295A1 (en) * 2006-09-19 2008-03-27 Shenzhen Bak Battery Co., Ltd A lithium ion battery electrode plate,a lithium ion battery electrode core and the preparation method of the same
CN101600571A (en) * 2007-01-30 2009-12-09 旭化成电子材料株式会社 Multilayer porous film and manufacture method thereof
KR100971110B1 (en) 2007-06-06 2010-07-20 데이진 가부시키가이샤 Separator for nonaqueous secondary battery and nonaqueous secondary battery
WO2010064603A1 (en) * 2008-12-01 2010-06-10 ダイキン工業株式会社 High-dielectric-constant multilayer film
JP5495210B2 (en) * 2010-07-21 2014-05-21 東レバッテリーセパレータフィルム株式会社 Composite porous membrane, method for producing composite porous membrane, and battery separator using the same
TWI529999B (en) * 2010-08-02 2016-04-11 希爾格得有限公司 Ultra high melt temperature microporous high temperature battery separators and related methods
JP5650955B2 (en) * 2010-08-26 2015-01-07 旭化成せんい株式会社 Composite membrane
US9431641B2 (en) * 2011-04-08 2016-08-30 Teijin Limited Separator for nonaqueous secondary battery, and nonaqueous secondary battery
EP2696391B1 (en) 2011-04-08 2016-03-30 Teijin Limited Nonaqueous secondary battery separator and nonaqueous secondary battery
JP5876696B2 (en) * 2011-09-30 2016-03-02 旭化成せんい株式会社 Polyketone porous membrane
JP6068124B2 (en) * 2012-12-17 2017-01-25 昭和電工パッケージング株式会社 Exterior material for air secondary battery and air secondary battery
SG11201506234WA (en) 2013-02-13 2015-09-29 Toray Battery Separator Film Separator for batteries and method for producing separator for batteries
JP6157967B2 (en) * 2013-07-24 2017-07-05 日立マクセル株式会社 Lithium secondary battery device and method for manufacturing lithium secondary battery device
JP6245038B2 (en) * 2014-03-31 2017-12-13 株式会社Ｇｓユアサ Power storage device
KR20180110210A (en) * 2014-04-07 2018-10-08 유니티카 가부시끼가이샤 Laminated porous film and production method therefor
CN107004811B (en) * 2014-12-09 2020-10-23 东丽株式会社 Separator for secondary battery, method for producing separator for secondary battery, and secondary battery
JP6004037B2 (en) * 2015-05-01 2016-10-05 ソニー株式会社 Separator and non-aqueous electrolyte battery using the same
JP6762107B2 (en) * 2016-02-15 2020-09-30 旭化成株式会社 Separator for power storage device
JP6727185B2 (en) * 2017-12-28 2020-07-22 日機装株式会社 Nitride semiconductor light emitting device
JP7043954B2 (en) * 2018-04-20 2022-03-30 マツダ株式会社 Vehicle power storage device
WO2020191577A1 (en) * 2019-03-25 2020-10-01 The Procter & Gamble Company Multilayer dissolvable solid article and method of making same
JP7305895B2 (en) * 2021-03-05 2023-07-10 旭化成株式会社 Separator for power storage device and power storage device

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JPH06333550A (en) * 1993-05-19 1994-12-02 Toshiba Corp Nonaqueous electrolytic battery
JP4098401B2 (en) * 1998-05-19 2008-06-11 旭化成ケミカルズ株式会社 Microporous membrane for battery separator made of polyolefin
JP5156158B2 (en) * 2001-02-22 2013-03-06 東レバッテリーセパレータフィルム株式会社 Composite membrane and manufacturing method thereof
JP2002355938A (en) * 2001-05-30 2002-12-10 Tonen Chem Corp Composite film, its manufacturing method, and separator for battery using the same or filter

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