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80 条记录 (耗时 0.038 秒)

    Multi-layer microporous membrane, battery separator and battery
    42.
    发明授权
    Multi-layer microporous membrane, battery separator and battery 有权
    多层微孔膜，电池分离器和电池

    公开(公告)号：US08323821B2

    公开(公告)日：2012-12-04

    申请号：US11937956

    申请日：2007-11-09

    申请人： Kotaro Takita ,  Shintaro Kikuchi

    发明人： Kotaro Takita ,  Shintaro Kikuchi

    IPC分类号： H01M2/14

    CPC分类号： H01M2/18 ,  B01D69/12 ,  B01D71/26 ,  B01D2325/22 ,  B01D2325/24 ,  B01D2325/26 ,  B29C47/0021 ,  B29C47/0047 ,  B29C47/065 ,  B29C55/005 ,  B29C59/10 ,  B29C2035/085 ,  B29C2035/0877 ,  B29K2023/06 ,  B29K2023/12 ,  B29K2105/04 ,  H01M2/145 ,  H01M2/1653 ,  H01M2/1686 ,  H01M10/0525 ,  Y10T428/249978

    摘要： The present invention relates to a particular multi-layer microporous membrane having a good balance of important properties, including excellent electrochemical stability and low heat shrinkage, while maintaining high permeability and heat resistance, with good mechanical strength, compression resistance and electrolytic solution absorption. Of particular importance when used as a battery separator, the present multi-layer microporous membrane exhibits excellent heat shrinkage, melt down temperature and thermal mechanical properties, i.e. low maximum shrinkage in the molten state. The multi-layer microporous membrane of the present invention can be produced (or manufactured) by layering, such as for example by coextrusion, one or more microporous membrane second layers and one or more microporous membrane first layers, such as on one or both sides of a second layer. The invention further relates to battery separators comprising the multi-layer microporous membrane and batteries utilizing the battery separators.

    摘要翻译： 本发明涉及一种具有良好的重要性能平衡的特定多层微孔膜，包括优异的电化学稳定性和低热收缩性，同时保持高的渗透性和耐热性，具有良好的机械强度，抗压缩性和电解液吸收。 当用作电池隔膜时，特别重要的是，本发明的多层微孔膜具有优异的热收缩率，熔融温度和热机械性能，即熔融状态下的最小收缩率。 本发明的多层微多孔膜可以通过例如通过共挤出，一个或多个微孔膜第二层和一个或多个微孔膜第一层（例如在一侧或两侧）上的层叠来制造（或制造） 的第二层。 本发明还涉及包括多层微孔膜的电池隔板和利用电池隔板的电池。

    Microporous polyolefin membrane and manufacturing method
    43.
    发明授权
    Microporous polyolefin membrane and manufacturing method 有权
    微孔聚烯烃膜及其制造方法

    公开(公告)号：US08304114B2

    公开(公告)日：2012-11-06

    申请号：US11858587

    申请日：2007-09-20

    申请人： Kotaro Takita ,  Shintaro Kikuchi

    发明人： Kotaro Takita ,  Shintaro Kikuchi

    IPC分类号： H01M2/16

    CPC分类号： B01D69/02 ,  B01D67/0027 ,  B01D71/26 ,  B01D2323/12 ,  B01D2325/34 ,  C08L23/06 ,  C08L23/10 ,  C08L2205/02 ,  C08L2207/068 ,  H01M2/1653 ,  H01M10/052 ,  Y10T428/269 ,  C08L2666/02

    摘要： A microporous polyolefin membrane having a structure in which its pore size distribution curve obtained by mercury intrusion porosimetry has at least two peaks, which is produced by extruding a melt-blend of a polyolefin composition comprising (a) high density polyethylene resin having a weight average molecular weight of from about 2.5×105 to about 5×105 and a molecular weight distribution of from about 5 to about 100, (b) polypropylene resin having a weight average molecular weight of from about 3×105 to about 1.5×106 and a molecular weight distribution of from about 1 to about 100, and (c) ultra-high molecular weight polyethylene resin having a weight average molecular weight of about 5×105 or higher, and a membrane-forming solvent, cooling the extrudate to form a high resin content gel-like sheet, stretching the gel-like sheet at a high stretching temperature to form a stretched gel-like sheet, removing the membrane-forming solvent from the stretched gel-like sheet to form a membrane, stretching the membrane to a high magnification to form a stretched membrane, and heat-setting the stretched microporous membrane to form the microporous membrane.

    摘要翻译： 具有通过水银侵入孔隙率法获得的孔径分布曲线具有至少两个峰的结构的微孔聚烯烃膜，其通过挤出聚烯烃组合物的熔融共混物制备，所述聚烯烃组合物包含（a）重均分子量的高密度聚乙烯树脂 分子量为约2.5×10 5至约5×10 5，分子量分布为约5至约100，（b）重均分子量为约3×10 5至约1.5×10 6的聚丙烯树脂和 分子量分布为约1至约100，和（c）重均分子量为约5×10 5或更高的超高分子量聚乙烯树脂和成膜溶剂，冷却挤出物以形成高 树脂含量的凝胶状片材，在高拉伸温度下拉伸凝胶状片材以形成拉伸的凝胶状片材，从拉伸的凝胶状片材中除去成膜溶剂，形成am 将膜拉伸至高倍数以形成拉伸膜，并且热定形拉伸的微孔膜以形成微孔膜。

    Multi-layer, microporous polyolefin membrane, its production method, battery separator, and battery
    44.
    发明授权
    Multi-layer, microporous polyolefin membrane, its production method, battery separator, and battery 有权
    多层，微孔聚烯烃膜，其生产方法，电池隔膜和电池

    公开(公告)号：US08252450B2

    公开(公告)日：2012-08-28

    申请号：US12296242

    申请日：2007-04-09

    申请人： Kotaro Takita ,  Junko Takita, legal representative ,  Shintaro Kikuchi

    发明人： Kotaro Takita ,  Shintaro Kikuchi

    IPC分类号： H01M2/16

    CPC分类号： H01M2/1653 ,  B29C47/0021 ,  B29C47/8805 ,  B29C47/8845 ,  B29C47/90 ,  B29C47/906 ,  B29C55/065 ,  B29C55/12 ,  B29K2023/0683 ,  B29K2105/0061 ,  B29K2105/0088 ,  B29K2105/04 ,  C08L23/06 ,  C08L23/10 ,  C08L2205/02 ,  Y10T428/249978 ,  C08L2666/06

    摘要： A multi-layer, microporous polyolefin membrane comprising first microporous layers constituting at least both surface layers, and at least one second microporous layer disposed between both surface layers, the first microporous layer comprising a first polyethylene resin containing 8% or more by mass of ultra-high-molecular-weight polyethylene having a weight-average molecular weight of 1×106 or more, the second microporous layer comprising a second polyethylene resin containing 7% or less by mass of the ultra-high-molecular-weight polyethylene, and having a structure in which a pore diameter distribution curve obtained by mercury intrusion porosimetry has at least two peaks, and the total thickness of the first microporous layers being 15-60% per 100% of the total thickness of the first and second microporous layers.

    摘要翻译： 一种多层微孔聚烯烃膜，其包括构成至少两个表面层的第一微孔层和设置在两个表面层之间的至少一个第二微孔层，所述第一微孔层包含含有8质量％或更多的超微结构的第一聚乙烯树脂 重均分子量为1×10 6以上的高分子量聚乙烯，所述第二微孔层包含含有超过所述超高分子量聚乙烯7质量％以下的第二聚乙烯树脂，并且具有 其中通过水银侵入孔隙率法获得的孔径分布曲线具有至少两个峰，并且第一微孔层的总厚度相对于第一和第二微孔层的总厚度的100％为15-60％。

    PRODUCTION METHOD OF MICROPOROUS POLYETHYLENE MEMBRANE AND BATTERY SEPARATOR
    50.
    发明申请
    PRODUCTION METHOD OF MICROPOROUS POLYETHYLENE MEMBRANE AND BATTERY SEPARATOR 有权
    微波聚乙烯膜和电池分离器的生产方法

    公开(公告)号：US20090269672A1

    公开(公告)日：2009-10-29

    申请号：US12088037

    申请日：2006-09-27

    申请人： Kotaro Takita ,  Shintaro Kikuchi ,  Kotaro Kimishima

    发明人： Kotaro Takita ,  Shintaro Kikuchi ,  Kotaro Kimishima

    IPC分类号： H01M2/16 ,  B29C44/50

    CPC分类号： H01M2/1653 ,  B01D67/002 ,  B01D69/12 ,  B01D71/26 ,  B01D2323/12 ,  B01D2325/22 ,  B01D2325/34 ,  B32B5/18 ,  B32B27/32 ,  H01G9/02 ,  H01M2/145 ,  H01M2/162 ,  H01M10/0565

    摘要： A microporous polyethylene membrane having well-balanced permeability, mechanical properties, heat shrinkage resistance, compression resistance, electrolytic solution absorbability, shutdown properties and meltdown properties, with an average pore diameter changing in a thickness direction is produced by melt-blending a polyethylene resin and a membrane-forming solvent to prepare a solution A having a resin concentration of 25 to 50% by mass and a solution B having a resin concentration of 10 to 30% by mass, the resin concentration in the solution A being higher than that in the solution B, (a) simultaneously extruding the resin solutions A and B through a die, cooling the resultant extrudate to provide a gel-like sheet in which the resin solutions A and B are laminated, and removing the membrane-forming solvent from the gel-like sheet, or (b) extruding the resin solutions A and B through separate dies, removing the membrane-forming solvent from the resultant gel-like sheets A and B to form microporous polyethylene membranes A and B, and alternately laminating the microporous polyethylene membranes A and B, while easily controlling the average pore diameter distribution in the microporous polyethylene membrane in a thickness direction.

    摘要翻译： 通过将聚乙烯树脂和聚乙烯树脂熔融共混来制造平均孔径在厚度方向上变化的具有良好平衡的渗透性，机械性能，耐热收缩性，耐压缩性，电解溶液吸收性，停机性和熔融性的微孔聚乙烯膜， 成膜溶剂以制备树脂浓度为25〜50质量％的溶液A和树脂浓度为10〜30质量％的溶液B，溶液A中的树脂浓度高于 溶液B，（a）通过模具同时挤出树脂溶液A和B，冷却所得挤出物以提供其中层压有树脂溶液A和B的凝胶状片材，并从凝胶中除去成膜溶剂 或（b）通过分开的模具挤出树脂溶液A和B，从得到的凝胶状片材A和B中除去成膜溶剂， 形成微孔聚乙烯膜A和B，并且交替地层叠微孔聚乙烯膜A和B，同时容易地控制微孔聚乙烯膜在厚度方向上的平均孔径分布。