公开(公告)号：US09431642B2

公开(公告)日：2016-08-30

申请号：US11995487

申请日：2006-07-14

申请人： Shintaro Kikuchi ,  Kotaro Takita ,  Koichi Kono

发明人： Shintaro Kikuchi ,  Kotaro Takita ,  Koichi Kono

IPC分类号： H01M2/16 ,  B01D67/00 ,  B01D69/02 ,  B01D69/12 ,  B01D71/26 ,  B29C55/02 ,  B29C55/16 ,  B32B27/32 ,  B29K23/00 ,  B29K105/04 ,  H01M10/0525 ,  H01M10/42

CPC分类号： H01M10/4235 ,  B01D67/0027 ,  B01D69/02 ,  B01D69/12 ,  B01D71/26 ,  B01D2325/22 ,  B01D2325/24 ,  B29B7/002 ,  B29C47/0057 ,  B29C47/0064 ,  B29C55/023 ,  B29C55/16 ,  B29K2023/065 ,  B29K2023/0683 ,  B29K2105/0088 ,  B29K2105/04 ,  B29K2995/0068 ,  B29L2031/3468 ,  B29L2031/755 ,  B32B27/32 ,  H01M2/1653 ,  H01M2/1686 ,  H01M10/0525 ,  Y02E60/122

摘要： A multi-layer, microporous polyolefin membrane having at least three layers, which comprises first microporous layers made of a polyethylene resin for constituting at least both surface layers, and at least one second microporous layer comprising a polyethylene resin and polypropylene and disposed between both surface layers, the heat of fusion (ΔHm) of the polypropylene measured by differential scanning calorimetry being 90 J/g or more, and the polypropylene content in the second microporous layer being 50% or less by mass based on 100% by mass of the total of the polyethylene resin and the polypropylene.

摘要翻译： 一种具有至少三层的多层微孔聚烯烃膜，其包括由用于构成至少两个表面层的聚乙烯树脂制成的第一微孔层和至少一个包含聚乙烯树脂和聚丙烯的第二微孔层，并且设置在两个表面之间 通过差示扫描量热法测定的聚丙烯的熔融热（ΔHm）为90J / g以上，第二微孔层的聚丙烯含量相对于总量为100质量％为50质量％以下 的聚乙烯树脂和聚丙烯。

公开(公告)号：US20090253032A1

公开(公告)日：2009-10-08

申请号：US12296232

申请日：2007-04-09

申请人： Kotaro Takita ,  Shintaro Kikuchi

发明人： Kotaro Takita ,  Shintaro Kikuchi

IPC分类号： H01M2/18 ,  H01M2/16 ,  B29C55/00 ,  B32B37/20

CPC分类号： H01M2/1653 ,  B29C48/08 ,  B29C48/90 ,  B29C48/906 ,  B29C48/91 ,  B29C48/914 ,  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; said first microporous layer being made of a first polyolefin comprising (i) polypropylene, or (ii) a mixture of 50% or more by mass of polypropylene and a polyethylene resin; said second microporous layer being made of a second polyolefin comprising (i) a mixture of 7% or less by mass of ultra-high-molecular-weight polyethylene having weight-average molecular weight of 1×106 or more and the other polyethylene than said ultra-high-molecular-weight polyethylene, (ii) the other polyethylene than said ultra-high-molecular-weight polyethylene, or (iii) a mixture of 50% or less by mass of polypropylene and said mixture (i) or said polyethylene (ii); said second microporous layer having a larger average pore diameter than that of said first microporous layer; and the total thickness of said first microporous layers being 15-60% per 100% of the total thickness of said first and second microporous layers.

摘要翻译： 一种多层微孔聚烯烃膜，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; 所述第一微孔层由第一聚烯烃制成，所述第一聚烯烃包含（i）聚丙烯，或（ii）50质量％以上的聚丙烯和聚乙烯树脂的混合物; 所述第二微孔层由第二聚烯烃制成，所述第二聚烯烃包含（i）重均分子量为1×10 6以上的超高分子量聚乙烯的7质量％以下的混合物， 高分子量聚乙烯，（ii）除了所述超高分子量聚乙烯以外的其它聚乙烯，或者（iii）50质量％以下的聚丙烯和所述混合物（i）或所述聚乙烯（ii）的混合物 ）; 所述第二微孔层的平均孔径大于所述第一微孔层的平均孔径; 并且所述第一微孔层的总厚度为所述第一和第二微孔层的总厚度的100％的15-60％。

公开(公告)号：US20090148761A1

公开(公告)日：2009-06-11

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 ,  B32B3/26 ,  B32B5/18 ,  B29C47/06

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。

公开(公告)号：US20090117454A1

公开(公告)日：2009-05-07

申请号：US11934491

申请日：2007-11-02

申请人： Kotaro Takita ,  Shintaro Kikuchi

发明人： Kotaro Takita ,  Shintaro Kikuchi

IPC分类号： H01M2/14 ,  B29C35/08 ,  B29C47/06 ,  B32B3/26

CPC分类号： H01M2/1653 ,  B01D69/02 ,  B01D69/12 ,  B01D71/26 ,  B01D2325/34 ,  B29C47/0004 ,  B29C47/0021 ,  B29C47/06 ,  B29C47/14 ,  B29C47/40 ,  B29C47/8805 ,  B29C47/8845 ,  B29C55/005 ,  B29C55/06 ,  B29K2023/06 ,  B29K2023/12 ,  B29K2105/04 ,  B29K2105/256 ,  B29L2009/00 ,  B29L2031/3468 ,  B29L2031/755 ,  C08L23/06 ,  C08L23/0815 ,  C08L23/10 ,  C08L2205/02 ,  C08L2205/03 ,  H01M2/1686 ,  H01M10/0525 ,  Y10T428/24998 ,  C08L2666/02 ,  C08L2666/06

摘要： The 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 is manufactured by layering, such as for example by coextrusion, one or more microporous membrane first layers and one or more microporous membrane second layers, such as on one or both sides of a first 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例如通过共挤出，一层或多层微孔膜第一层和一个或多个微孔膜第二层（例如在第一层的一侧或两侧）上层叠而制成。 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。

公开(公告)号：US20090117453A1

公开(公告)日：2009-05-07

申请号：US11915540

申请日：2006-06-23

申请人： Shintaro Kikuchi ,  Kotaro Takita ,  Kazuhiro Yamada ,  Teiji Nakamura ,  Koichi Kono

发明人： Shintaro Kikuchi ,  Kotaro Takita ,  Kazuhiro Yamada ,  Teiji Nakamura ,  Koichi Kono

IPC分类号： H01M2/16 ,  B32B3/26 ,  B32B27/32

CPC分类号： B32B27/32 ,  B32B2250/24 ,  B32B2250/40 ,  B32B2270/00 ,  B32B2457/10 ,  H01M2/1653 ,  H01M2/1686 ,  H01M10/4235 ,  Y10T428/24998

摘要： A multi-layer, microporous polyethylene membrane having at least three layers comprising (a) a first microporous layer amount of a polyethylene resin and constituting at least both surface layers, and (b) at least one second microporous layer made of a polyethylene resin, a heat-resistant resin having a melting point or glass transition temperature of 150° C. or higher and a filler, and sandwiched by both surface layers.

摘要翻译： 一种具有至少三层的多层微孔聚乙烯膜，包括（a）第一微孔层数量的聚乙烯树脂，并至少构成两个表面层，和（b）由聚乙烯树脂制成的至少一个第二微孔层， 具有150℃以上的熔点或玻璃化转变温度的耐热树脂和填料，并被两个表面层夹在中间。

公开(公告)号：US20090092893A1

公开(公告)日：2009-04-09

申请号：US11868265

申请日：2007-10-05

申请人： Kotaro Takita ,  Shintaro Kikuchi

发明人： Kotaro Takita ,  Shintaro Kikuchi

IPC分类号： H01M2/14 ,  B29C35/08 ,  B29C47/06 ,  B32B3/26 ,  C08F110/02 ,  C08F110/06

CPC分类号： B29C55/005 ,  B29C47/0021 ,  B29C47/0042 ,  B29C47/0057 ,  B29C47/025 ,  B29C47/065 ,  B29K2105/0061 ,  B29K2105/04 ,  B29L2031/3468 ,  B29L2031/7146 ,  B32B27/06 ,  B32B27/32 ,  B32B2307/54 ,  B32B2307/724 ,  B32B2457/10 ,  C08L23/06 ,  C08L23/10 ,  C08L2205/02 ,  C08L2205/03 ,  C08L2207/068 ,  H01M2/1653 ,  Y10T428/24998 ,  C08L2666/06 ,  C08L2666/02

摘要： The invention relates to a microporous membrane which comprises polyethylene, the microporous membrane having a differential pore volume curve with an area under the curve over the range of pore diameters of from about 100 nm to about 1,000 nm that is 25% or more of a total area under the curve over the range of pore diameters of from about 10 nm to about 1,000 nm.

摘要翻译： 本发明涉及一种包含聚乙烯的微多孔膜，该微多孔膜具有微孔容积曲线，其孔径范围在约100nm至约1,000nm范围内的曲线面积为总共的25％或更多 在大约10nm至大约1000nm的孔径范围内的曲线下面积。

公开(公告)号：US09492965B2

公开(公告)日：2016-11-15

申请号：US12089676

申请日：2006-10-19

申请人： Kotaro Takita ,  Shintaro Kikuchi

发明人： Kotaro Takita ,  Shintaro Kikuchi

IPC分类号： B29C55/02 ,  B29C47/00 ,  B29C47/06 ,  B29C55/00 ,  B29C55/16 ,  B32B5/32 ,  B32B27/32 ,  B32B38/00 ,  H01M2/14 ,  H01M2/16 ,  B29K23/00 ,  B29K105/04 ,  B32B37/15 ,  B32B38/16

CPC分类号： B29C55/023 ,  B29C47/0021 ,  B29C47/06 ,  B29C55/005 ,  B29C55/16 ,  B29K2023/065 ,  B29K2023/0683 ,  B29K2023/12 ,  B29K2105/04 ,  B32B5/32 ,  B32B27/32 ,  B32B37/153 ,  B32B38/0032 ,  B32B2038/0028 ,  B32B2038/168 ,  B32B2305/026 ,  B32B2323/04 ,  B32B2323/10 ,  H01M2/145 ,  H01M2/1653 ,  H01M2/1686

摘要： A multi-layer, microporous polyolefin membrane comprising a polypropylene layer and a polyethylene resin layer and having well-balanced permeability, mechanical strength, heat shrinkage resistance, shutdown properties and meltdown properties can be obtained by (1) forming a sheet comprising a gel-like polypropylene layer containing a membrane-forming solvent or a polypropylene layer containing no membrane-forming solvent and a gel-like polyethylene resin layer containing a membrane-forming solvent, stretching the sheet at two-stage temperatures, and then removing the membrane-forming solvent, or (2) forming a gel-like polypropylene sheet containing a membrane-forming solvent or a polypropylene sheet containing no membrane-forming solvent, and a gel-like polyethylene resin sheet containing a membrane-forming solvent, stretching them at two-stage temperatures, removing the membrane-forming solvent, and then laminating the resultant microporous polypropylene membrane and the resultant microporous polyethylene membrane.

摘要翻译： 包含聚丙烯层和聚乙烯树脂层并具有良好平衡的渗透性，机械强度，耐热收缩性，停止性能和熔化性能的多层微孔聚烯烃膜可以通过（1）形成包含凝胶 - 含有成膜溶剂的聚丙烯层或不含成膜溶剂的聚丙烯层和含有成膜溶剂的凝胶状聚乙烯树脂层，在两段温度下拉伸，然后除去膜形成 溶剂，或（2）形成含有成膜溶剂或不含成膜溶剂的聚丙烯片的凝胶状聚丙烯片，以及含有成膜溶剂的凝胶状聚乙烯树脂片， 阶段温度，去除成膜溶剂，然后层压得到的微孔聚丙烯膜和所得麦克风 无孔聚乙烯膜。

公开(公告)号：US09287542B2

公开(公告)日：2016-03-15

申请号：US13547850

申请日：2012-07-12

申请人： Kotaro Takita ,  Junko Takita ,  Shintaro Kikuchi

发明人： Kotaro Takita ,  Shintaro Kikuchi

IPC分类号： H01M2/16 ,  B29C55/06 ,  B29C55/12 ,  C08L23/06 ,  B29K23/00 ,  B29K105/00 ,  B29K105/04 ,  C08L23/10

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％。

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。

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。