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    Multi-layer, microporous polyethylene membrane, battery separator formed thereby and battery
    3.
    发明授权
    Multi-layer, microporous polyethylene membrane, battery separator formed thereby and battery 有权
    多层，微孔聚乙烯膜，由此形成的电池隔板和电池

    公开(公告)号：US08778525B2

    公开(公告)日：2014-07-15

    申请号：US12064350

    申请日：2006-08-24

    申请人： Shintaro Kikuchi ,  Kotaro Takita

    发明人： Shintaro Kikuchi ,  Kotaro Takita

    IPC分类号： H01M2/16

    CPC分类号： H01M2/162 ,  B32B27/32 ,  H01M2/1653 ,  H01M10/0525 ,  H01M2200/10 ,  H01M2300/0025 ,  Y02E60/122 ,  Y02P70/54 ,  Y10T428/249978

    摘要： A multi-layer, microporous polyethylene membrane comprising (a) a first microporous layer made of a polyethylene resin, and (b) a second microporous layer comprising a polyethylene resin, and a heat-resistant polymer having a melting point or a glass transition temperature of 170° C. or higher, the heat-resistant polymer being dispersed in the form of fine particles in the polyethylene resin, and the second microporous layer having pores containing fine particles of the heat-resistant polymer as nuclei from which the cleavage of polyethylene resin fibrils starts, the multi-layer microporous polyethylene membrane having well-balanced shutdown properties, meltdown properties, permeability, mechanical strength, heat shrinkage resistance and compression resistance.

    摘要翻译： 一种多层微孔聚乙烯膜，包括（a）由聚乙烯树脂制成的第一微孔层，和（b）包含聚乙烯树脂的第二微孔层和具有熔点或玻璃化转变温度的耐热聚合物 为170℃以上，耐热性聚合物以聚乙烯树脂中的细颗粒的形式分散，第二微孔层具有含有耐热聚合物微粒的孔，作为核，其中聚乙烯 树脂原纤维开始，多层微孔聚乙烯膜具有良好的平衡关闭性能，熔化性能，渗透性，机械强度，耐热收缩性和抗压缩性。

    Production method of microporous polyethylene membrane and battery separator
    6.
    发明授权
    Production method of microporous polyethylene membrane and battery separator 有权
    微孔聚乙烯膜和电池隔膜的生产方法

    公开(公告)号：US07988895B2

    公开(公告)日：2011-08-02

    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： B29C47/06

    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。

    Extruder And Process For Preparing A Mixture Of Polymer And Diluent
    8.
    发明申请
    Extruder And Process For Preparing A Mixture Of Polymer And Diluent 有权
    用于制备聚合物和稀释剂混合物的挤出机和方法

    公开(公告)号：US20110089602A1

    公开(公告)日：2011-04-21

    申请号：US12681695

    申请日：2008-10-20

    申请人： Tetsuro Nogata ,  Soichiro Yamaguchi ,  Norimitsu Kaimai ,  Kotaro Takita ,  Takita Junko

    发明人： Tetsuro Nogata ,  Soichiro Yamaguchi ,  Norimitsu Kaimai ,  Kotaro Takita ,  Takita Junko

    IPC分类号： B29C47/00 ,  B29C47/40

    CPC分类号： B29C47/0825 ,  B29B7/482 ,  B29B7/60 ,  B29C47/0021 ,  B29C47/38 ,  B29C47/402 ,  B29C47/60

    摘要： The invention relates to a twin screw extruder for preparing a polymeric solution. The extruder includes an elongated housing having an inlet end, an outlet end, an extruder shaft length L and a pair of interconnecting bores disposed within the housing, a pair of elongated extruder shafts, each having an axis of rotation, the pair of elongated extruder shafts disposed within the pair of interconnecting bores and drivable in at least one direction of rotation, a plurality of extruder screw segments positioned along the pair of elongated extruder shafts in a fixed angular relationship therewith, the plurality of extruder screw segments selected to form multiple extruder stages. The invention also relates to a process for extruding a mixture of polymer and diluent.

    摘要翻译： 本发明涉及一种用于制备聚合物溶液的双螺杆挤出机。 挤出机包括细长壳体，其具有入口端，出口端，挤出机轴长度L和布置在壳体内的一对互连孔，每对具有旋转轴线的一对细长挤出机轴，该对细长挤出机 设置在所述一对互连孔内并且可沿至少一个旋转方向驱动的轴;多个挤出机螺杆段，沿着所述一对细长挤出机轴以固定的角度关系定位，所述多个挤出机螺杆段被选择以形成多个挤出机 阶段 本发明还涉及挤出聚合物和稀释剂的混合物的方法。

    MULTI-LAYER, MICROPOROUS POLYOLEFIN MEMBRANE, ITS PRODUCTION METHOD, BATTERY SEPARATOR, AND BATTERY
    9.
    发明申请
    MULTI-LAYER, MICROPOROUS POLYOLEFIN MEMBRANE, ITS PRODUCTION METHOD, BATTERY SEPARATOR, AND BATTERY 有权
    多层，微孔聚烯烃薄膜，其生产方法，电池分离器和电池

    公开(公告)号：US20100021808A1

    公开(公告)日：2010-01-28

    申请号：US12296242

    申请日：2007-04-09

    申请人： Kotaro Takita ,  Shintaro Kikuchi

    发明人： Kotaro Takita ,  Shintaro Kikuchi

    IPC分类号： H01M2/16 ,  B29C47/06 ,  B32B37/14 ,  B32B3/26

    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，第二微孔层包含含有7质量％以下的超高分子量聚乙烯的第二聚乙烯树脂，具有结构 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％。

    MICROPOROUS POLYOLEFIN MEMBRANE, ITS PRODUCTION METHOD, BATTERY SEPARATOR, AND BATTERY
    10.
    发明申请
    MICROPOROUS POLYOLEFIN MEMBRANE, ITS PRODUCTION METHOD, BATTERY SEPARATOR, AND BATTERY 有权
    微波聚合薄膜，其生产方法，电池分离器和电池

    公开(公告)号：US20090286161A1

    公开(公告)日：2009-11-19

    申请号：US12296338

    申请日：2007-04-09

    申请人： Kotaro Takita ,  Shintaro Kikuchi

    发明人： Kotaro Takita ,  Shintaro Kikuchi

    IPC分类号： H01M2/16 ,  B29C47/78

    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 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 (1) extruding a melt-blend of (a) (i) a polyethylene resin containing 7% or less by mass of ultra-high-molecular-weight polyethylene having a weight-average molecular weight of 1×106 or more, or (ii) a mixture of 75% by mass or more of said polyethylene resin and 25% or less by mass of polypropylene, and (b) a membrane-forming solvent, (2) stretching a gel-like sheet obtained by cooling an extrudate, (3) washing it, (4) stretching the resultant microporous membrane to 1.1-1.8 fold in at least one direction, and (5) heat-setting it at a temperature in a range of the stretching temperature of the microporous membrane plus or minus 5 degrees centigrade.

    摘要翻译： 具有通过水银压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（1）挤出熔融共混物（a）（i）含有7％ 或更少的重均分子量为1×10 6以上的超高分子量聚乙烯，或（ii）75质量％以上的所述聚乙烯树脂和25质量％以下的混合物， 聚丙烯和（b）成膜溶剂，（2）拉伸通过冷却挤出物获得的凝胶状片材，（3）洗涤，（4）将至少一个拉伸所得微多孔膜至1.1-1.8倍 方向，（5）在微孔膜的拉伸温度±5摄氏度的范围内的温度下进行热定型。