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    • 1. 发明专利
    • Porous film, separator for lithium battery using the same, and battery
    • 多孔电池,使用该锂离子电池的锂离子电池和电池
    • JP2010111833A
    • 2010-05-20
    • JP2008287972
    • 2008-11-10
    • Mitsubishi Plastics Inc三菱樹脂株式会社
    • YAMADA TAKEMIKIARAI HIDETAKAKATSUHARA KAZUNARI
    • C08J9/00H01M2/16
    • Y02E60/12
    • PROBLEM TO BE SOLVED: To solve problems of the conventional porous film which has extremely high void ratio, tending to result in reduced elastic modulus due to such a high void ratio, and whose void ratio becomes higher when a draw ratio is increased to promote molecular orientation and to enhance an elastic modulus, resulting in rather reduced elastic modulus despite the intention; and to provide a porous film having a high elastic modulus by appropriately controlling voids generated during stretching.
      SOLUTION: The porous film includes at least one layer of mixed resin containing a polypropylene-based resin and a thermoplastic resin having a crystal melting peak temperature or a glass transition temperature of
    • 解决的问题为了解决具有非常高的空隙率的常规多孔膜的问题,由于这种高的空隙率而导致弹性模量降低,并且当拉伸比增加时其空隙率变高 促进分子取向和增强弹性模量,尽管有意图导致弹性模量相当降低; 并且通过适当地控制在拉伸过程中产生的空隙来提供具有高弹性模量的多孔膜。 解决方案:多孔膜包括至少一层包含聚丙烯基树脂和具有晶体熔融峰值温度或玻璃化转变温度<120℃的热塑性树脂的混合树脂,并具有β活性。 版权所有(C)2010,JPO&INPIT
    • 3. 发明专利
    • Method for producing laminated porous film
    • 生产层压多孔膜的方法
    • JP2013063664A
    • 2013-04-11
    • JP2012264734
    • 2012-12-03
    • Mitsubishi Plastics Inc三菱樹脂株式会社
    • YAMADA TAKEMIKIUSAMI YASUSHITAKAGI JUN
    • B32B5/32B29C47/06B29K23/00B29L7/00B29L9/00B32B27/32B32B37/00
    • PROBLEM TO BE SOLVED: To provide a method for producing a laminated porous film that has excellent air permeation characteristics and mechanical strength, and exerts breakdown characteristics superior to that of conventional polypropylene porous films.SOLUTION: There is provided the method for producing a laminated porous film formed by laminating porous layers of at least a first layer and a second layer. The method comprises: laminating the first layer and the second layer thereby producing a laminated non-porous film; and making the laminated non-porous film porous, wherein the first layer comprises a composition formed by mixing a thermoplastic resin having a crystal melting peak temperature of 170°C or higher with a polypropylene resin blended with a β-crystal nucleating agent and has β-activity and/or β-crystal formation power, and wherein the second layer comprises a composition in which the thermoplastic resin having a crystal melting peak temperature of 170°C or higher is not mixed with the polypropylene resin blended with the β-crystal nucleating agent and has β-activity and/or β-crystal formation power.
    • 待解决的问题:提供一种具有优异的透气特性和机械强度并且具有优于常规聚丙烯多孔膜的击穿特性的层压多孔膜的制造方法。 解决方案:提供了通过层叠至少第一层和第二层的多孔层而形成的层压多孔膜的方法。 该方法包括:层压第一层和第二层,由此制备层压无孔膜; 并且使所述层压无孔膜多孔,其中所述第一层包含通过将结晶熔融峰值温度为170℃以上的热塑性树脂与与所述β-晶体成核剂混合的聚丙烯树脂混合而形成的组合物,并且具有β 活性和/或β-晶体形成能力,并且其中第二层包括其中结晶熔融峰值温度为170℃或更高的热塑性树脂不与掺有β-晶体成核的聚丙烯树脂混合的组合物 具有β活性和/或β晶形成能力。 版权所有(C)2013,JPO&INPIT
    • 4. 发明专利
    • Method for manufacturing laminated porous film
    • 制造层压多孔膜的方法
    • JP2013010365A
    • 2013-01-17
    • JP2012223989
    • 2012-10-09
    • Mitsubishi Plastics Inc三菱樹脂株式会社
    • USAMI YASUSHIYAMADA TAKEMIKITAKAGI JUN
    • B29C67/20B29C47/06B29K23/00B29K27/12B29L9/00B32B5/32B32B27/32
    • PROBLEM TO BE SOLVED: To provide a method for manufacturing a laminated porous film that has a porous structure that sufficiently secures also the communication property, while holding the strength, and can exert a more excellent breakdown characteristic than a conventional polypropylene porous film.SOLUTION: There is provided a method for manufacturing a laminated porous film laminating at least two porous layers and having β activity. In the method, a layer (PP layer) containing polypropylene-based resin is prepared, a heat-resistant layer (HR layer) is prepared from a resin composition having a higher crystal melting peak temperature than that in a resin composition of the PP layer, a laminated non-porous film-like material composed of at least two layers of the PP layer and the HR layer is prepared and the non-porous film-like material is made porous.
    • 要解决的问题:提供一种多层结构的制造方法,其具有能够充分确保连通性的同时保持强度,并且可以发挥比常规的聚丙烯多孔膜更好的击穿特性 。 解决方案:提供层压至少两个多孔层并具有β活性的层压多孔膜的制造方法。 在该方法中,制备含有聚丙烯类树脂的层(PP层),由具有比PP层的树脂组合物中的结晶熔融峰值温度高的树脂组合物制备耐热层(HR层) 制备由PP层和HR层的至少两层构成的层叠无孔膜状材料,并使无孔膜状材料多孔化。 版权所有(C)2013,JPO&INPIT
    • 5. 发明专利
    • Laminated porous film, and battery separator and battery which use the same
    • 层压多孔膜,电池分离器和使用其的电池
    • JP2012136035A
    • 2012-07-19
    • JP2012084160
    • 2012-04-02
    • Mitsubishi Plastics Inc三菱樹脂株式会社
    • USAMI YASUSHIYAMADA TAKEMIKITAKAGI JUN
    • B32B27/32B32B27/20H01M2/16
    • Y02E60/12
    • PROBLEM TO BE SOLVED: To provide a laminated porous film which has a porous structure having also a communication property secured sufficiently, while holding the strength, and can exert both a shutdown characteristic and a breakdown characteristic.SOLUTION: The laminated porous film is prepared by laying at least two porous layers on each other. The film includes a first layer composed of a composition which contains a mixed resin of polypropylene-series resin and resin having a crystal melting peak temperature lower than that of the polypropylene-series resin and of 100°C or above, and a second layer composed of a composition which contains resin having a crystal melting peak temperature higher than that of the polypropylene-series resin, and has β activity and/or β crystal generating power.
    • 要解决的问题:为了提供具有充分确保连通性的多孔结构的层叠多孔膜,同时保持强度,并且可以兼顾关闭特性和击穿特性。 解决方案:通过将至少两个多孔层彼此铺设来制备层压多孔膜。 该膜包括由包含聚丙烯系树脂的混合树脂和结晶熔融峰值温度低于聚丙烯系树脂的树脂和100℃以上的树脂组成的第一层,第二层由 含有结晶熔融峰值温度高于聚丙烯系树脂的树脂的组合物,具有β活性和/或β晶体发生能力。 版权所有(C)2012,JPO&INPIT
    • 7. 发明专利
    • Laminated porous film, separator for battery using it, and battery
    • 层压多孔膜,使用它的电池分离器和电池
    • JP2008307890A
    • 2008-12-25
    • JP2008117527
    • 2008-04-28
    • Mitsubishi Plastics Inc三菱樹脂株式会社
    • YAMADA TAKEMIKIUSAMI YASUSHITAKAGI JUN
    • B32B27/32
    • Y02E60/12
    • PROBLEM TO BE SOLVED: To provide a laminated porous film having excellent air permeability and mechanical strength, and having a shut-down characteristic. SOLUTION: In the laminated porous film in which at least two porous layers are laminated, the two layers contain polypropylene resins. One of the two layers contains a thermoplastic resin having a peak crystal melting temperature of 100°C to 150°C, while the other one layer does not include the thermoplastic resin having the peak crystal melting temperature of 100°C to 150°C, and has β activity and/or β crystal formation power. On the other hand, the two layers contain the polypropylene resins, and thermoplastic resins each having the peak crystal melting temperature of 100°C to 150°C, wherein contents of the two thermoplastic resins of these two layers are made to differ from each other, and the laminated porous film has the β activity and/or the β crystal formation power. COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:提供具有优异的透气性和机械强度并具有关闭特性的层压多孔膜。 解决方案:在其中层压至少两个多孔层的层压多孔膜中,两层包含聚丙烯树脂。 两层中的一层含有峰值晶体熔融温度为100℃〜150℃的热塑性树脂,另一层不包含峰值结晶熔融温度为100℃〜150℃的热塑性树脂, 并具有β活性和/或β晶形成力。 另一方面,两层包含聚丙烯树脂和各自具有100℃至150℃的峰值结晶熔融温度的热塑性树脂,其中使这两层的两种热塑性树脂的含量彼此不同 ,层叠多孔膜具有β活性和/或β晶形成能力。 版权所有(C)2009,JPO&INPIT
    • 8. 发明专利
    • Method of manufacturing laminated porous film
    • 制造层压多孔膜的方法
    • JP2013075526A
    • 2013-04-25
    • JP2012264788
    • 2012-12-03
    • Mitsubishi Plastics Inc三菱樹脂株式会社
    • USAMI YASUSHIYAMADA TAKEMIKITAKAGI JUN
    • B32B27/32B32B5/18C08J9/00
    • PROBLEM TO BE SOLVED: To provide a method of manufacturing a laminated porous film that exhibits breakdown characteristics more excellent than a conventional polypropylene porous film, and exhibits shutdown characteristics for ensuring safety of a battery.SOLUTION: A laminated porous film includes at least first to third porous layers, and has β activation force and/or β crystal generation force. The method of manufacturing the laminated porous film includes: manufacturing a laminated nonporous membrane including a first layer formed of a composition containing a crystal nucleating agent, a second layer formed of a composition having a peak value of a crystal melting temperature higher than a peak value of a crystal melting temperature of the first layer composition, and a third layer formed of a composition having a peak value of a crystal melting temperature lower than the peak value of the crystal melting temperature of the first layer composition in a polypropylene resin; and forming a porous membrane from the laminated nonporous membrane.
    • 解决的问题:提供一种制备比常规聚丙烯多孔膜更优异的击穿特性的叠层多孔膜的制造方法,并且具有确保电池安全性的关闭特性。 解决方案:叠层多孔膜至少包括第一至第三多孔层,并且具有β活化力和/或β晶体生成力。 层叠多孔膜的制造方法包括:制造层叠无孔膜,其包含由含有结晶成核剂的组合物形成的第一层,第二层由具有高于峰值的结晶熔解温度的峰值的组合物形成 以及第三层,由具有比聚丙烯树脂中的第一层组合物的结晶熔融温度的峰值低的结晶熔点的峰值的组合物形成的第三层; 以及从层压无孔膜形成多孔膜。 版权所有(C)2013,JPO&INPIT