公开(公告)号：US20070264578A1

公开(公告)日：2007-11-15

申请号：US11383264

申请日：2006-05-15

申请人： Hiroyuki Ozaki ,  Kotaro Kimishima ,  Koichi Kono ,  Patrick Brant ,  Zerong Lin ,  Jeffery Brinen

发明人： Hiroyuki Ozaki ,  Kotaro Kimishima ,  Koichi Kono ,  Patrick Brant ,  Zerong Lin ,  Jeffery Brinen

IPC分类号： H01M2/16 ,  B29C65/00

CPC分类号： H01M2/162 ,  B29C55/005 ,  B29K2023/06 ,  B29K2023/12 ,  B29K2105/0061 ,  B29K2105/0088 ,  B29K2105/04 ,  C08L23/06 ,  C08L23/10 ,  C08L2205/02 ,  C08L2205/025 ,  H01M2/145 ,  H01M2/1653 ,  C08L2666/02

摘要： A microporous polyolefin membrane comprising a polyethylene resin, and polypropylene having a weight-average molecular weight of 6×105 or more and a heat of fusion of 90 J/g or more (measured by a differential scanning calorimeter), a fraction having a molecular weight of 5×104 or less being 5% or less by mass of the polypropylene.

摘要翻译： 一种包含聚乙烯树脂和重均分子量为6×10 5以上且熔融热为90J / g以上（通过差示扫描量热计测定）的聚丙烯的微孔聚烯烃膜， ，分子量为5×10 4以下的部分为聚丙烯的5质量％以下。

公开(公告)号：US20130302696A1

公开(公告)日：2013-11-14

申请号：US13979688

申请日：2012-01-17

申请人： Takeshi Ishihara ,  Koichi Kono

发明人： Takeshi Ishihara ,  Koichi Kono

IPC分类号： H01M2/16

CPC分类号： H01M2/1653 ,  C08J5/18 ,  C08J2423/04 ,  C08J2423/10 ,  C08J2423/20 ,  C08L23/10 ,  H01M2/145 ,  H01M2250/20 ,  Y02T90/32 ,  C08L23/04 ,  C08L23/20

摘要： The present invention is a microporous membrane comprising polymethylpentene (a), polyethylene (b), and polypropylene (c), the microporous membrane having a meltdown temperature of 180° C. or higher, a TD heat shrinkage at 170° C. of 35% or less, and a thickness change ratio per thickness of 10% or less.An object of the present invention is to provide a microporous membrane having a high meltdown temperature, a low shutdown temperature, and resistance to heat shrinkage at high temperatures, which cannot be obtained by the prior art.

摘要翻译： 本发明是一种包含聚甲基戊烯（a），聚乙烯（b）和聚丙烯（c））的微孔膜，该微孔膜具有180℃或更高的熔化温度，在170℃下的TD热收缩率为35 ％以下，厚度变化率为10％以下。 本发明的目的是提供一种在现有技术中无法获得的具有高熔化温度，低停机温度和耐高温热收缩性的微孔膜。

公开(公告)号：US20090146334A1

公开(公告)日：2009-06-11

申请号：US11910201

申请日：2006-03-29

申请人： Kotaro Takita ,  Kotaro Kimishima ,  Koichi Kono

发明人： Kotaro Takita ,  Kotaro Kimishima ,  Koichi Kono

IPC分类号： B29C67/20

CPC分类号： B01D69/02 ,  B01D67/0027 ,  B01D71/26 ,  B01D2323/08 ,  B01D2325/20 ,  B01D2325/24 ,  B29C48/0018 ,  B29C48/2725 ,  B29C48/30 ,  B29C48/305 ,  B29C55/005 ,  B29K2023/00 ,  B29K2023/04 ,  B29K2105/04 ,  C08J5/18 ,  C08J2323/02 ,  C08J2323/06 ,  H01M2/145 ,  H01M2/1653 ,  H01M10/4235

摘要： A microporous polyolefin membrane having large pore diameters and excellent air permeability, mechanical strength and compression resistance can be obtained by (a) stretching a gel molding comprising a polyolefin and a membrane-forming solvent at least uniaxially at a temperature from the crystal dispersion temperature of the polyolefin +15° C. to the crystal dispersion temperature of the polyolefin +40° C., removing the membrane-forming solvent, and then stretching again the resultant membrane to 1.1 to 2.5 fold at least uniaxially, or by (b) stretching the gel molding at least uniaxially, bringing the stretched film into contact with a hot solvent before and/or after removing the membrane-forming solvent, and then stretching again the resultant membrane to 1.1 to 2.5 fold at least uniaxially.

摘要翻译： 通过（a）在从晶体分散温度的温度下至少单轴拉伸含有聚烯烃和成膜溶剂的凝胶成型体，可以得到孔径大，透气性，机械强度和抗压缩性优异的微孔聚烯烃膜 聚烯烃+ 15℃至聚烯烃的结晶分散温度+ 40℃，除去成膜溶剂，然后再将所得膜再次拉伸至至少单轴至1.1倍至2.5倍，或（b）拉伸 至少单轴地凝胶成型，在除去成膜溶剂之前和/或之后使拉伸膜与热溶剂接触，然后再将所得膜再次拉伸至至少单轴至1.1倍至2.5倍。

公开(公告)号：US20090079102A1

公开(公告)日：2009-03-26

申请号：US11915195

申请日：2006-06-23

申请人： Kotaro Takita ,  Kazuhiro Yamada ,  Norimitsu Kaimai ,  Teiji Nakamura ,  Koichi Kono

发明人： Kotaro Takita ,  Kazuhiro Yamada ,  Norimitsu Kaimai ,  Teiji Nakamura ,  Koichi Kono

IPC分类号： B29C47/38

CPC分类号： H01M2/1653 ,  B01D67/0027 ,  B01D71/26 ,  B01D2325/34 ,  H01M2/145 ,  H01M10/052 ,  H01M10/30 ,  H01M10/345

摘要： A method for producing a microporous polyolefin membrane by extruding a melt blend comprising a polyethylene resin, polypropylene having a mass-average molecular weight of 1×105 or more and an ethylene content of 5% by mass or less, and a membrane-forming solvent through a die, slowly cooling the resultant extrudate to form a gel-like sheet, stretching the gel-like sheet, and removing the above membrane-forming solvent, the slow-cooling speed of the extrudate being 30° C./second or less.

摘要翻译： 通过挤出含有质量平均分子量为1×10 5以上，乙烯含量为5质量％以下的聚乙烯树脂，聚丙烯，熔融共混物，以及成膜溶剂，通过以下方法制造微孔聚烯烃膜的方法： 将所得挤出物缓慢冷却以形成凝胶状片材，拉伸凝胶状片材，除去上述成膜溶剂，挤出物的缓慢冷却速度为30℃/秒以下。

公开(公告)号：US5922492A

公开(公告)日：1999-07-13

申请号：US864079

申请日：1997-05-28

申请人： Kotaro Takita ,  Koichi Kono ,  Norimitsu Kaimai ,  Soichiro Yamaguchi

发明人： Kotaro Takita ,  Koichi Kono ,  Norimitsu Kaimai ,  Soichiro Yamaguchi

IPC分类号： B32B5/24 ,  D04H13/00 ,  H01M2/16

CPC分类号： H01M2/162 ,  B32B5/24 ,  H01M2/1653

摘要： A microporous polyolefin composite membrane, preferably for use as a battery separator, comprising a microporous polyolefin membrane and a polyolefin nonwoven fabric laminated on at least one surface of the microporous polyolefin membrane. The composite membrane has a thickness of 25 to 200 .mu.m, a porosity of 30 to 70%, an air permeability of 100 to 2000 sec/100 cc and a surface opening area ratio of 50 to 90% on at least one outer surface thereof. The microporous polyolefin membrane comprises a matrix polyolefin component which is a polyolefin having a weight average molecular weight of 5.times.10.sup.5 or more or a polyolefin mixture containing the polyolefin having a weight average molecular weight of 5.times.10.sup.5 or more, and has a porosity of 30 to 95%, an air permeability of 100 to 2000 sec/100 cc, an average open pore diameter of 0.001 to 1 .mu.m and a tensile strength at break of 500 kg/cm.sup.2 or more. The microporous polyolefin membrane may further comprise a shutdown polymer component to shut down the pores, thereby making the composite membrane impermeable. The polyolefin nonwoven fabric comprises fine fibers and has an air permeability of 0.1 to 100 sec/100 cc and a basis weight of 5 to 50 g/m.sup.2. The polyolefin nonwoven fabric prevents the composite membrane from melting down at a low temperature thereby preventing the short-circuit between the electrodes.

摘要翻译： 一种微孔聚烯烃复合膜，优选用作电池隔板，其包含微孔聚烯烃膜和聚烯烃无纺布，该聚烯烃无纺布层叠在微孔聚烯烃膜的至少一个表面上。 复合膜的至少一个外表面的厚度为25〜200μm，孔隙率为30〜70％，透气度为100〜2000秒/ 100cc，表面开口面积率为50〜90％ 。 微孔聚烯烃膜包括基重聚烯烃组分，其是重均分子量为5×10 5以上的聚烯烃或含有重均分子量为5×10 5以上的聚烯烃的聚烯烃混合物，其孔隙率为30〜95％ 透气度为100〜2000秒/ 100cc，平均开孔直径为0.001〜1μm，断裂强度为500kg / cm 2以上。 微孔聚烯烃膜还可以包括关闭聚合物组分以关闭孔，从而使复合膜不可渗透。 聚烯烃无纺布包括细纤维，透气度为0.1〜100秒/ 100cc，单位面积重量为5〜50g / m 2。 聚烯烃无纺布防止复合膜在低温下熔化，从而防止电极之间的短路。

公开(公告)号：US5830554A

公开(公告)日：1998-11-03

申请号：US718672

申请日：1996-09-24

申请人： Norimitsu Kaimai ,  Kotaro Takita ,  Koichi Kono

发明人： Norimitsu Kaimai ,  Kotaro Takita ,  Koichi Kono

IPC分类号： C08J9/28 ,  B01D67/00 ,  B01D71/26 ,  B29C47/14 ,  B29C55/12 ,  B29K105/04 ,  B29L7/00 ,  C08J5/18 ,  C08J9/00 ,  H01M2/16 ,  B32B3/26

CPC分类号： H01M2/1653 ,  B01D67/0009 ,  B01D67/0027 ,  B01D71/26 ,  C08J5/18 ,  B01D2323/08 ,  B01D2323/12 ,  C08J2323/02 ,  C08J2323/04 ,  Y10T428/24273 ,  Y10T428/249979 ,  Y10T428/261 ,  Y10T428/269

摘要： An efficient method of producing a microporous polyolefin membrane having improved tensile strength and pierce strength is provided, in which a solution having dissolved therein 5% by weight to 50% by weight of a polyolefin whose weight-average molecular weight is in the range of 5.times.10.sup.5 to 2.5.times.10.sup.6 and whose weight-average molecular weight to number-average molecular weight ratio is less than 10, is extruded and rapidly cooled to obtain a gel-like product which is then stretched and has remaining solvent removed therefrom.

摘要翻译： 提供一种生产具有改进的拉伸强度和刺穿强度的微孔聚烯烃膜的有效方法，其中溶解有5重量％至50重量％的重均分子量在5×10 5范围内的聚烯烃 至2.5×10 6，其重均分子量与数均分子量比小于10，被挤出并迅速冷却，得到凝胶状产品，然后将其拉伸并除去残留的溶剂。

公开(公告)号：US4849311A

公开(公告)日：1989-07-18

申请号：US247744

申请日：1988-09-22

申请人： Takuji Itoh ,  Kazuo Saeki ,  Koichi Kono

发明人： Takuji Itoh ,  Kazuo Saeki ,  Koichi Kono

IPC分类号： H01B1/06 ,  B01D69/14 ,  C08J5/22 ,  C08J9/00 ,  C08L57/00 ,  C25B13/08 ,  H01M2/16 ,  H01M6/18 ,  H01M6/22 ,  H01M8/02 ,  H01M10/05 ,  H01M10/056

CPC分类号： H01M2/1653 ,  B01D69/142 ,  C08J5/2275 ,  C25B13/08 ,  H01M8/0289 ,  C08J2327/12

摘要： Disclosed are immobilized electrolyte membranes having a high electric conductivity and a high mechanical strength, where an ionic conductor such as a polymer electrolyte or an ion-exchange resin is immobilized in pores of a porous solid polymer membrane, particularly of polyolefin having a weight average molecular weight of not less than 5.times.10.sup.5, the porous solid polymer membrane having a thickness of 0.1 .mu.m to 50 .mu.m, a porosity of 40% to 90%, a tensile strength of not less than 200 kg/cm.sup.2, and an average permeable pore diameter of 0.001 .mu.m to 0.1 .mu.m.

公开(公告)号：US08802273B2

公开(公告)日：2014-08-12

申请号：US12066965

申请日：2006-09-14

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

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

IPC分类号： H01M2/16

CPC分类号： H01M2/1653 ,  B01D67/0027 ,  B01D67/0083 ,  B01D67/009 ,  B01D67/0093 ,  B01D69/02 ,  B01D71/26 ,  B01D2323/30 ,  B01D2323/38 ,  B01D2325/022 ,  B01D2325/023 ,  B01D2325/24 ,  B01D2325/34 ,  H01M10/052 ,  Y10T428/249979

摘要： A microporous polyethylene membrane made of a polyethylene resin having a ratio (mass-average molecular weight/number-average molecular weight) of 5 to 300 and comprising 1% or more by mass of ultra-high-molecular-weight polyethylene having a mass-average molecular weight of 7×105 or more, the microporous polyethylene membrane comprising (a) a coarse-structure layer having an average pore diameter of more than 0.04 μm, which is formed on at least one surface, and (b) a dense-structure layer having an average pore diameter of 0.04 μm or less, an area ratio of the coarse-structure layer to the dense-structure layer in a membrane cross section being 0.1 to 0.8.

摘要翻译： 一种由聚乙烯树脂制成的微孔聚乙烯膜，其具有5〜300的质量比（质量平均分子量/数均分子量），并且含有1质量％以上的超高分子量聚乙烯， 平均分子量为7×10 5以上，所述微孔聚乙烯膜包含（a）在至少一个表面上形成的平均孔径大于0.04μm的粗结构层，和（b） 平均孔径为0.04μm以下的结构层，在膜截面中粗构造层与致密结构层的面积比为0.1〜0.8。

公开(公告)号：US07815825B2

公开(公告)日：2010-10-19

申请号：US12314602

申请日：2008-12-12

申请人： Hidehiko Funaoka ,  Kotaro Takita ,  Norimitsu Kaimai ,  Shigeaki Kobayashi ,  Koichi Kono

发明人： Hidehiko Funaoka ,  Kotaro Takita ,  Norimitsu Kaimai ,  Shigeaki Kobayashi ,  Koichi Kono

IPC分类号： B29C47/78 ,  B01D71/26 ,  H01M2/16

CPC分类号： H01M2/1653 ,  B01D67/0027 ,  B01D67/003 ,  B01D69/02 ,  B01D71/26 ,  B01D2323/12 ,  B01D2325/023 ,  B01D2325/34 ,  B29C47/0021 ,  B29C47/822 ,  B29C47/862 ,  B29C47/8845 ,  Y10T428/24942

摘要： The present invention provides a microporous polyolefin membrane of high permeability and novel structure, and also provides a method of producing the same, wherein its average pore size is gradually decreases from at least one membrane surface towards its center. The method of producing the microporous polyolefin membrane comprises the steps of extruding the solution, composed of 10 to 50 weight % of (A) a polyolefin having a weight-average molecular weight of 5×105 or more or (B) a composition containing this polyolefin and 50 to 90 weight % of a solvent, into a gel-like formed article and removing the solvent therefrom, wherein a treatment step with a hot solvent is incorporated.

摘要翻译： 本发明提供一种高渗透性和新颖结构的微孔聚烯烃膜，并提供其制造方法，其平均孔径从至少一个膜表面向其中心逐渐减小。 制造微孔聚烯烃膜的方法包括以下步骤：将10重量％至50重量％的（A）重均分子量为5×10 5以上的聚烯烃或（B）含有该微孔聚烯烃的组合物 聚烯烃和50〜90重量％的溶剂进入凝胶状成型制品并从其中除去溶剂，其中加入具有热溶剂的处理步骤。

公开(公告)号：US20090274955A1

公开(公告)日：2009-11-05

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

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（DeltaHm）为90J / g以上，第二微孔层的聚丙烯含量相对于总量的100质量％为50质量％以下 的聚乙烯树脂和聚丙烯。