公开(公告)号：US20240243292A1

公开(公告)日：2024-07-18

申请号：US18617776

申请日：2024-03-27

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Taketo KATO ,  Takaya YAMADA ,  Kohei YASUDA ,  Taku YAMANAKA ,  Junpei TERADA ,  Masayoshi MIYAMOTO

IPC: H01M4/62 ,  H01M4/02

CPC classification number: H01M4/623 ,  H01M2004/021

Abstract: The disclosure aims to provide a polytetrafluoroethylene powder for an electrode binder with excellent handleability, an electrode binder and an electrode mixture containing the electrode binder, an electrode, and a secondary battery. Provided is a polytetrafluoroethylene powder for use as an electrode binder, the polytetrafluoroethylene powder having an apparent density of 0.40 g/mL or higher and a powder particle size of 400 μm or greater.

公开(公告)号：US20160289361A1

公开(公告)日：2016-10-06

申请号：US15038307

申请日：2014-12-01

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Taku YAMANAKA ,  Makoto ONO ,  Kohei YASUDA ,  Masahiko YAMADA ,  Shinichi CHAEN ,  Yasuhiko SAWADA ,  Takahiro TAIRA ,  Hirotoshi YOSHIDA ,  Taketo KATO

IPC: C08F214/26 ,  C08J5/18

CPC classification number: C08F214/262 ,  B29C55/04 ,  C08F2500/11 ,  C08F2500/24 ,  C08F2500/26 ,  C08F2800/10 ,  C08J5/18 ,  C08J2327/18

Abstract: The present invention aims to provide a modified polytetrafluoroethylene fine powder capable of providing a stretched body having high strength, a small pore size, and excellent homogeneity. The modified polytetrafluoroethylene fine powder of the present invention has non-melt-processability, has a standard specific gravity of 2.155 or lower, includes 0.015 mol % or more of a polymer unit derived from perfluoro(methyl vinyl ether) in all the monomer units, is obtained by emulsion polymerizing tetrafluoroethylene and at least the perfluoro(methyl vinyl ether) in the presence of a fluorosurfactant having a LogPOW value of 3.4 or lower, and has an extrusion pressure of 20.0 MPa or lower.

Abstract translation: 本发明的目的在于提供能够提供强度高，孔径小，均匀性优异的拉伸体的改性聚四氟乙烯细粉。 本发明的改性聚四氟乙烯微粉具有非熔融加工性，标准比重为2.155以下，在全部（单
体单元）中含有来自全氟（甲基乙烯基醚）的聚合物单元的0.015摩尔％以上， 通过在LogPOW值为3.4以下的含氟表面活性剂的存在下，将四氟乙烯和至少全氟（甲基乙烯基醚）进行乳液聚合而得到，挤出压力为20.0MPa以下。

公开(公告)号：US20160372240A1

公开(公告)日：2016-12-22

申请号：US15121150

申请日：2015-02-27

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Hiroyuki YOSHIMOTO ,  Kohei YASUDA ,  Kazuya KAWAHARA ,  Haruhisa MASUDA ,  Masayuki TSUJI

IPC: H01B13/14 ,  H01B7/02 ,  H01B3/44 ,  C09D127/18 ,  C08J3/05

CPC classification number: H01B13/148 ,  C08F14/26 ,  C08J3/05 ,  C08J3/11 ,  C08J2327/18 ,  C09D127/18 ,  H01B3/445 ,  H01B7/0275

Abstract: The present invention aims to provide a paste containing polytetrafluoroethylene which can be formed into a molded polytetrafluoroethylene article having a significantly small thickness of polytetrafluoroethylene and is less likely to cause defects in molding; and a method of producing the paste. The present invention provides a method of producing a paste, including the steps of coagulating primary particles of polytetrafluoroethylene in an aqueous dispersion that contains the primary particles and water to form slurry that contains secondary particles of polytetrafluoroethylene and water or secondary particles of polytetrafluoroethylene floating in water; and adding an organic solvent to at least one of the slurry and the secondary particles of polytetrafluoroethylene floating in water to provide the paste.

Abstract translation: 本发明的目的在于提供一种含有聚四氟乙烯的糊剂，其可以形成为具有显着小的聚四氟乙烯厚度的聚四氟乙烯制品，并且不太可能引起成型缺陷; 和糊料的制造方法。 本发明提供了一种糊状物的制造方法，其特征在于，在含有一次粒子和水的水分散液中凝固聚四氟乙烯的一次粒子，形成含有聚四氟乙烯二次粒子和水的二次粒子或漂浮于水中的聚四氟乙烯的二次粒子的工序 ; 并将有机溶剂添加到漂浮在水中的聚四氟乙烯的浆料和二次颗粒中的至少一种以提供糊料。

公开(公告)号：US20240282968A1

公开(公告)日：2024-08-22

申请号：US18617997

申请日：2024-03-27

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Taketo KATO ,  Takaya YAMADA ,  Kohei YASUDA ,  Taku YAMANAKA ,  Junpei TERADA ,  Masahiko YAMADA ,  Ryota USAMI ,  Hiroyuki SATO ,  Emi YAMAMOTO ,  Kenta NISHIMURA

IPC: H01M4/62 ,  C08L27/18 ,  H01M4/13

CPC classification number: H01M4/623 ,  C08L27/18 ,  H01M4/13 ,  C08L2201/50

Abstract: The disclosure aims to provide a polytetrafluoroethylene powder for an electrode binder which can not only reduce or prevent gas generation inside a battery cell and deterioration of battery characteristics but also improve the electrode strength, an electrode binder, an electrode mixture, an electrode, and a secondary battery. Provided is a polytetrafluoroethylene powder for use as an electrode binder, the polytetrafluoroethylene having a standard specific gravity of 2.200 or less and being substantially free from water.

公开(公告)号：US20170002156A1

公开(公告)日：2017-01-05

申请号：US15100013

申请日：2014-12-01

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Shinichi CHAEN ,  Taku YAMANAKA ,  Kohei YASUDA ,  Masahiko YAMADA ,  Nobuki URAOKA ,  Tomohisa KONISHI ,  Kunihiko INUI ,  Yoshiyuki SHIBUYA ,  Makoto ONO

IPC: C08J5/18 ,  B01D67/00 ,  B01D71/52 ,  H01M8/1039 ,  H01M8/1069

CPC classification number: C08J5/18 ,  B01D67/0027 ,  B01D71/36 ,  B01D71/52 ,  B01D71/76 ,  C08J2327/18 ,  H01M8/1023 ,  H01M8/1039 ,  H01M8/1079 ,  H01M2300/0082 ,  Y02P70/56

Abstract: The present invention aims to provide a biaxially stretched porous membrane having high strength, a small pore size, and excellent homogeneity. The biaxially stretched porous membrane of the present invention includes polytetrafluoroethylene obtained by copolymerizing tetrafluoroethylene and perfluoro(methyl vinyl ether).

Abstract translation: 本发明的目的在于提供一种具有高强度，小孔径，均匀性优异的双轴拉伸多孔膜。 本发明的双轴拉伸多孔膜包括通过共聚四氟乙烯和全氟（甲基乙烯基醚）获得的聚四氟乙烯。

公开(公告)号：US20170001155A1

公开(公告)日：2017-01-05

申请号：US15100002

申请日：2014-12-01

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Shinichi CHAEN ,  Taku YAMANAKA ,  Kohei YASUDA ,  Masahiko YAMADA ,  Nobuki URAOKA ,  Tomohisa KONISHI ,  Kunihiko INUI ,  Yoshiyuki SHIBUYA ,  Makoto ONO

IPC: B01D71/36 ,  B01D69/02 ,  H01M8/1039 ,  B01D69/08 ,  C08J5/22 ,  B01J20/26

Abstract: The present invention provides a porous body having high strength, a small pore size, and excellent homogeneity. The porous body of the present invention includes polytetrafluoroethylene and has a microstructure that includes nodes and fibrils. The microstructure further includes, in addition to the nodes and the fibrils, fused points where a fibril that links two nodes and another fibril that links another two nodes are fused with each other.

Abstract translation: 本发明提供一种具有高强度，小孔径，均匀性优异的多孔体。 本发明的多孔体包括聚四氟乙烯并且具有包括节点和原纤维的微结构。 除了节点和原纤维之外，微结构进一步包括熔合点，其中连接两个节点的原纤维和另一个连接另外两个节点的原纤维彼此熔合。