JP2006289657A5 - - Google Patents

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JP2006289657A5
JP2006289657A5 JP2005110120A JP2005110120A JP2006289657A5 JP 2006289657 A5 JP2006289657 A5 JP 2006289657A5 JP 2005110120 A JP2005110120 A JP 2005110120A JP 2005110120 A JP2005110120 A JP 2005110120A JP 2006289657 A5 JP2006289657 A5 JP 2006289657A5
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Japan
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water
porous membrane
heat
resistant resin
soluble polymer
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JP2005110120A
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Japanese (ja)
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JP2006289657A (en
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Priority to JP2005110120A priority Critical patent/JP2006289657A/en
Priority claimed from JP2005110120A external-priority patent/JP2006289657A/en
Publication of JP2006289657A publication Critical patent/JP2006289657A/en
Publication of JP2006289657A5 publication Critical patent/JP2006289657A5/ja
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Claims (7)

融点またはガラス転移点が１５０℃以上かつモノマー構造中に極性基を有する耐熱性樹脂を含有する多孔膜（Ａ）と融点が１５０℃以下であるポリオレフィン樹脂を含有する多孔膜（Ｂ）を少なくとも一層ずつ含む二層以上の積層体であって、多孔膜（Ａ）が最大繊維径１μｍ以下のフィブリル構造からなることを特徴とする多層多孔膜。   At least one porous film (A) containing a heat-resistant resin having a melting point or glass transition point of 150 ° C. or more and having a polar group in the monomer structure and a porous film (B) containing a polyolefin resin having a melting point of 150 ° C. or less A multilayer porous membrane comprising two or more layers each comprising a porous membrane (A) having a fibril structure having a maximum fiber diameter of 1 μm or less. 多孔膜（Ａ）と多孔膜（Ｂ）の剥離強度が、１〜５００Ｎ／ｍ、透気度が１〜８００秒、１５０℃におけるガラス板熱収縮率が２０％以下であることを特徴とする請求項１に記載の多層多孔膜。   The peel strength between the porous membrane (A) and the porous membrane (B) is 1 to 500 N / m, the air permeability is 1 to 800 seconds, and the thermal contraction rate of the glass plate at 150 ° C. is 20% or less. The multilayer porous membrane according to claim 1. 多孔膜（Ａ）が、耐熱性樹脂１〜３０ｗｔ％、水溶性ポリマー１〜３０ｗｔ％、耐熱性樹脂の良溶媒９８〜４０ｗｔ％の組成からなる溶液を多孔膜（Ｂ）に塗布した後、水溶性ポリマーと良溶媒を水または水と有機溶媒の混合液で抽出して形成された膜であることを特徴とする請求項１または２に記載の多層多孔膜。   After the porous film (A) was applied to the porous film (B) with a solution composed of a heat-resistant resin 1-30 wt%, a water-soluble polymer 1-30 wt%, and a heat-resistant resin good solvent 98-40 wt%, The multilayer porous membrane according to claim 1 or 2, which is a membrane formed by extracting a water-soluble polymer and a good solvent with water or a mixture of water and an organic solvent. 耐熱性樹脂が、１００〜４００℃で熱処理したポリアミドイミドであることを特徴とする請求項１〜３のいずれかに記載の多層多孔膜。   The multilayer porous membrane according to any one of claims 1 to 3, wherein the heat-resistant resin is polyamideimide heat-treated at 100 to 400 ° C. 多孔膜（Ｂ）の透気度が、１〜５００秒であることを特徴とする請求項１〜４のいずれかに記載の多層多孔膜。   The multilayer porous membrane according to any one of claims 1 to 4, wherein the air permeability of the porous membrane (B) is 1 to 500 seconds. 請求項１〜５いずれかに記載の多層多孔膜の製造方法であって、耐熱性樹脂１〜３０ｗｔ%、水溶性ポリマー１〜３０ｗｔ%、耐熱性樹脂の良溶媒９８〜４０ｗｔ％の組成からなる溶液を多孔膜（Ｂ）に塗布した後、水溶性ポリマーと耐熱性樹脂の良溶媒とを水または水と有機溶媒との混合液で抽出して多孔膜（Ａ）を形成する製造方法。  A method for producing a multilayer porous membrane according to any one of claims 1 to 5, comprising a composition of heat-resistant resin 1 to 30 wt%, water-soluble polymer 1 to 30 wt%, and heat-resistant resin good solvent 98 to 40 wt%. A method for forming a porous membrane (A) by applying a solution to the porous membrane (B) and then extracting a water-soluble polymer and a good solvent for the heat-resistant resin with water or a mixed solution of water and an organic solvent. 耐熱性樹脂１〜３０ｗｔ％、水溶性ポリマー１〜３０ｗｔ％、耐熱性樹脂の良溶媒９８〜４０ｗｔ％の組成からなる溶液を多孔膜（Ｂ）に塗布した後、相対湿度６０〜１００％で加湿し、その後に水溶性ポリマーと耐熱性樹脂の良溶媒とを水または水と有機溶媒との混合液で抽出して多孔膜（Ａ）を形成する請求項６に記載の製造方法。  After applying a solution comprising a composition of 1-30 wt% heat-resistant resin, 1-30 wt% water-soluble polymer, 98-40 wt% good solvent for the heat-resistant resin to the porous membrane (B), it is humidified at a relative humidity of 60-100% Then, the water-soluble polymer and a good solvent for the heat-resistant resin are extracted with water or a mixed solution of water and an organic solvent to form the porous film (A).
JP2005110120A 2005-04-06 2005-04-06 Multilayered porous film Pending JP2006289657A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2005110120A JP2006289657A (en) 2005-04-06 2005-04-06 Multilayered porous film

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005110120A JP2006289657A (en) 2005-04-06 2005-04-06 Multilayered porous film

Publications (2)

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JP2006289657A JP2006289657A (en) 2006-10-26
JP2006289657A5 true JP2006289657A5 (en) 2008-05-01

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JP2005110120A Pending JP2006289657A (en) 2005-04-06 2005-04-06 Multilayered porous film

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KR100971109B1 (en) 2006-11-20 2010-07-20 데이진 가부시키가이샤 Separator for nonaqueous secondary battery, and nonaqueous secondary battery
KR100727248B1 (en) * 2007-02-05 2007-06-11 주식회사 엘지화학 Organic/inorganic composite separator having porous active coating layer and electrochemical device containing the same
KR20120025619A (en) 2007-05-10 2012-03-15 히다치 막셀 에너지 가부시키가이샤 Electrochemical element
JP4460028B2 (en) 2007-06-06 2010-05-12 帝人株式会社 Polyolefin microporous membrane substrate for non-aqueous secondary battery separator, production method thereof, non-aqueous secondary battery separator and non-aqueous secondary battery
KR101460640B1 (en) 2007-07-06 2014-12-02 소니 가부시끼가이샤 Separator, battery using the same, and method for manufacturing separator
JP4840302B2 (en) * 2007-09-11 2011-12-21 ソニー株式会社 Separator and battery using the same
KR100918050B1 (en) * 2007-10-02 2009-09-18 삼성에스디아이 주식회사 Negative active material for rechargeable lithium battery, negative electrode for rechargeable lithium battery, and rechargeable lithium battery using same
CN102015083A (en) * 2008-04-08 2011-04-13 Sk能源株式会社 Microporous polyolefin composite film with a thermally stable porous layer at high temperature
JP5635970B2 (en) * 2008-04-08 2014-12-03 エスケー イノベーション カンパニー リミテッドＳｋ Ｉｎｎｏｖａｔｉｏｎ Ｃｏ．，Ｌｔｄ． Method for producing polyolefin composite microporous membrane having high heat resistant coating layer
WO2010021248A1 (en) * 2008-08-19 2010-02-25 帝人株式会社 Separator for nonaqueous secondary battery
JP5621248B2 (en) * 2009-02-03 2014-11-12 ソニー株式会社 Separator and battery
JP5434661B2 (en) * 2009-02-23 2014-03-05 東レ株式会社 Porous film and power storage device
US10312491B2 (en) 2009-12-04 2019-06-04 Murata Manufacturing Co., Ltd. Separator and battery
HUE042737T2 (en) * 2010-06-25 2019-07-29 Toray Industries Composite porous membrane, method for producing composite porous membrane and battery separator using same
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
WO2012029699A1 (en) * 2010-09-02 2012-03-08 東レ株式会社 Composite porous film and method for producing same
JP5636619B2 (en) * 2010-11-05 2014-12-10 東レバッテリーセパレータフィルム株式会社 Composite porous membrane and method for producing the same
JP5595322B2 (en) * 2011-03-31 2014-09-24 Ｔｄｋ株式会社 Separator and electrochemical device using the same
US9705120B2 (en) * 2011-07-28 2017-07-11 Sumitomo Chemical Company, Limited Laminated porous film and non-aqueous electrolyte secondary battery
US9343719B2 (en) 2011-09-22 2016-05-17 Mitsubishi Plastics, Inc. Method for producing laminated porous film, and laminated porous film
WO2013121971A1 (en) * 2012-02-15 2013-08-22 東レバッテリーセパレータフィルム株式会社 Battery separator, and battery separator manufacturing method
CN104106155B (en) * 2012-02-15 2017-03-01 东丽电池隔膜株式会社 Battery separator and the preparation method of battery separator
KR101704759B1 (en) * 2012-11-12 2017-02-08 주식회사 엘지화학 Stack/folding-typed electrode assembly and electrochemical device including the same
JP6290570B2 (en) * 2013-10-02 2018-03-07 積水化学工業株式会社 Heat-resistant microporous film, separator for non-aqueous electrolyte secondary battery, non-aqueous electrolyte secondary battery, and method for producing heat-resistant microporous film
WO2015156261A1 (en) * 2014-04-07 2015-10-15 ユニチカ株式会社 Laminated porous film and production method therefor
JP2016091963A (en) * 2014-11-11 2016-05-23 株式会社ダイセル Secondary battery separator and secondary battery
US11078627B2 (en) * 2018-08-14 2021-08-03 Dupont Safety & Construction, Inc. High tensile strength paper suitable for use in electrochemical cells
CN118539089A (en) * 2020-04-13 2024-08-23 旭化成株式会社 Composite laminated chemical cross-linked separator

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JP3810844B2 (en) * 1996-02-05 2006-08-16 ソニー株式会社 Battery separator and battery
JP4008516B2 (en) * 1996-08-02 2007-11-14 東燃化学株式会社 Polyolefin porous membrane, method for producing the same, and battery separator using the same
JP3721639B2 (en) * 1996-06-21 2005-11-30 住友化学株式会社 Para-aramid porous film and battery separator using the same
JP3175730B2 (en) * 1998-04-27 2001-06-11 住友化学工業株式会社 Non-aqueous electrolyte battery separator and lithium secondary battery
JP3676115B2 (en) * 1999-04-30 2005-07-27 帝人株式会社 Electrolyte-supported polymer film and secondary battery using the same
JP5140896B2 (en) * 2000-06-14 2013-02-13 住友化学株式会社 Porous film and battery separator using the same
JP4530630B2 (en) * 2002-11-12 2010-08-25 ダイセル化学工業株式会社 Method for producing porous film and porous film

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