公开(公告)号：US20240178399A1

公开(公告)日：2024-05-30

申请号：US18412161

申请日：2024-01-12

Applicant: DAIKIN AMERICA, INC. ,  DAIKIN INDUSTRIES, LTD.

Inventor： Alec FALZONE ,  Emily Grumbles ,  Wade Simpson ,  Joseph Sunstrom ,  Ronald Hendershot ,  Taku Yamanaka ,  Taketo Kato ,  Takaya Yamada ,  Junpei Terada ,  Masato Tokuda ,  Kenta Nishimura

IPC: H01M4/62 ,  C08J3/20 ,  C08L27/18 ,  H01M4/02

CPC classification number: H01M4/623 ,  C08J3/203 ,  C08L27/18 ,  C08J2327/18 ,  C08J2427/16 ,  C08L2203/20 ,  H01M2004/021 ,  H01M4/625

Abstract: Composite binder materials for energy storage applications are disclosed. The composite binder materials include a fluoropolymer, such as polytetrafluoroethylene (PTFE), integrated with a conductive additive and a low-melting point thermoplastic. Methods of making the composite binder materials are also disclosed. The methods include providing an emulsion of the fluoropolymer, mixing the low-melting point thermoplastic and the particulate conductive additive into the emulsion of the fluoropolymer to form a mixture, and coagulating the mixture to produce a coagulum including the composite binder material. The disclosure also provides a binder powder for an electrochemical device capable of providing an electrode mixture sheet having excellent uniformity of tensile strength. The disclosure relates to a binder powder for an electrochemical device, containing a non-fibrillated fibrillatable resin and a thermoplastic polymer.

公开(公告)号：US11084895B2

公开(公告)日：2021-08-10

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: C08F214/18 ,  C08J5/18 ,  C08F214/26 ,  B29C55/04

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.

公开(公告)号：US10601098B2

公开(公告)日：2020-03-24

申请号：US15552320

申请日：2016-03-31

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Hiroyuki Yoshimoto ,  Kyouhei Murayama ,  Taku Yamanaka ,  Dai Fukami

IPC: H01P3/16 ,  C08J5/00 ,  H01P11/00 ,  G01R27/26 ,  C08J5/18 ,  C08J9/28

Abstract: The present invention provides a dielectric waveguide having excellent transmission efficiency. The dielectric waveguide includes a polytetrafluoroethylene molded article that has a permittivity of 2.05 or higher at 2.45 GHz or 12 GHz, a loss tangent of 1.20×10−4 or lower at 2.45 GHz or 12 GHz, and a hardness of 95 or higher.

公开(公告)号：US10047175B2

公开(公告)日：2018-08-14

申请号：US14645775

申请日：2015-03-12

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Taku Yamanaka ,  Nobuhiko Tsuda ,  Masayuki Tsuji ,  Yasuhiko Sawada

IPC: C08F14/26 ,  C08F214/26 ,  C08F6/22 ,  C08F2/18 ,  C08F6/16 ,  G03G9/097 ,  C08F6/20 ,  G03G9/087

Abstract: The present invention provides an aqueous dispersion of a low-molecular-weight polytetrafluoroethylene (PTFE), which contains an easily removable surfactant, and has a good dispersion stability. Specifically, the present invention provides an aqueous dispersion of a low-molecular-weight PTFE comprising tetrafluoroethylene (TFE) units, or TFE units and modifying monomer units which are copolymerizable with the TFE units, wherein the aqueous dispersion contains from 70 to 9,000 ppm, based on the aqueous dispersion, of a fluorine-containing compound of the formula (1) below: X—(CF2)m—Y  (1) where X is H or F; m is an integer from 3 to 5; and Y is —SO3M, —SO4M, —SO3R, —SO4R, —COOM, —PO3M2 or —PO4M2, M being H, NH4 or an alkali metal, and R being an alkyl group having 1 to 12 carbons, and the low-molecular-weight PTFE has an average primary particle size of from 100 to 350 nm.

公开(公告)号：US20150082757A1

公开(公告)日：2015-03-26

申请号：US14394946

申请日：2013-04-19

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Shinichi Chaen ,  Hideyuki Kiyotani ,  Kunihiko Inui ,  Taku Yamanaka ,  Li Bao ,  Yoshiyuki Shibuya ,  Seigo Yamamoto ,  Makoto Kobayashi ,  Shunji Kasai ,  Hitoshi Niinuma

IPC: B01D46/54 ,  B29D99/00 ,  B29D7/01 ,  B01D46/00 ,  C08L27/18

CPC classification number: B01D71/36 ,  B01D46/0001 ,  B01D46/0019 ,  B01D46/543 ,  B29D7/01 ,  B29D99/005 ,  B29K2027/18 ,  B29K2105/0005 ,  B32B27/322 ,  C08K3/36 ,  C08L27/18 ,  C08L83/04 ,  C08L2205/025 ,  C08L2205/03

Abstract: A composition, a mixed power and a material for molding have polytetrafluoroethylene as a main component. Each includes polytetrafluoroethylene that can be fibrillated, a non-hot melt processable component that is not fibrillated, and a hot melt processable component with a melting point of lower than 320° C. that is not fibrillated. The hot melt processable component is contained at equal to or more than 0.1% by weight but less than 20% by weight of a total weight. A filtering medium for an air filter includes a porous membrane made of these components, and an air permeable support. The porous membrane is manufactured, by mixing these components, extruding the mixture, rolling and drawing.

Abstract translation: 组合物，混合动力和用于模塑的材料具有聚四氟乙烯作为主要成分。 每个都包括可以被原纤化的聚四氟乙烯，不原纤化的非热熔可加工组分，以及熔点低于320℃，不原纤化的热熔加工组分。 热熔可加工成分的含量为0.1重量％以上且小于20重量％。 用于空气过滤器的过滤介质包括由这些部件制成的多孔膜和透气性支撑体。 通过混合这些组分制造多孔膜，挤出混合物，轧制和拉伸。

公开(公告)号：US20240150533A1

公开(公告)日：2024-05-09

申请号：US18400039

申请日：2023-12-29

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Takayuki TANAKA ,  Masayoshi Miyamoto ,  Tomoki Minamiyama ,  Takeki Kusunoki ,  Tokahiro Taira ,  Takuya Yamabe ,  Hirotoshi Yoshida ,  Taketo Kato ,  Taku Yamanaka ,  Mitsuo Tsukamoto

IPC: B29C71/02 ,  C08F114/26

CPC classification number: C08J7/08 ,  C08F114/26 ,  C08J2327/18

Abstract: A method for producing a polytetrafluoroethylene particle, which includes subjecting tetrafluoroethylene to suspension polymerization in an aqueous medium to prepare a suspension-polymerized particle of polytetrafluoroethylene, washing and then crushing the suspension-polymerized particle or crushing the suspension-polymerized particle with washing to prepare a crushed particle, dehydrating the crushed particle to prepare a crushed particle having a water content of 40% by mass or less, and subjecting the dehydrated crushed particle to heat treatment to produce a polytetrafluoroethylene particle.

公开(公告)号：US11952441B2

公开(公告)日：2024-04-09

申请号：US17280940

申请日：2019-10-03

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Taketo Kato ,  Yohei Fujimoto ,  Kenji Ichikawa ,  Hiroyuki Sato ,  Yoshinori Nanba ,  Hirotoshi Yoshida ,  Kengo Ito ,  Chiaki Okui ,  Masamichi Sukegawa ,  Taku Yamanaka

IPC: C08F114/26 ,  C08L27/18

CPC classification number: C08F114/26 ,  C08L27/18

Abstract: A method for producing polytetrafluoroethylene, which includes polymerizing tetrafluoroethylene in an aqueous medium in the presence of a nucleating agent and a hydrocarbon anionic surfactant to obtain polytetrafluoroethylene. A total amount of the nucleating agent and the hydrocarbon anionic surfactant at the initiation of polymerization is more than 50 ppm based on the aqueous medium.

公开(公告)号：US11851519B2

公开(公告)日：2023-12-26

申请号：US16637601

申请日：2018-08-10

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Takahiro Taira ,  Kazuhiro Mishima ,  Chiaki Okui ,  Tadao Hayashi ,  Hirotoshi Yoshida ,  Yuuji Tanaka ,  Masayoshi Miyamoto ,  Taku Yamanaka ,  Taketo Kato

IPC: C08F6/06 ,  C08F6/16 ,  C08F6/24

CPC classification number: C08F6/06 ,  C08F6/16 ,  C08F6/24

Abstract: A method for producing an aqueous dispersion of purified polytetrafluoroethylene, the method including: removing or reducing a compound represented by Formula (1) or (2) below from an aqueous dispersion of polytetrafluoroethylene obtained using a hydrocarbon surfactant:

(H—(CF2)m—COO)pM1; or  Formula (1):

(H—(CF2)n—SO3)qM2.  Formula (2):

Also disclosed is a composition containing polytetrafluoroethylene substantially free from a compound represented by Formula (3) below and a molded body including the composition:

(H—(CF2)8—SO3)qM2.  Formula (3):

公开(公告)号：US11518826B2

公开(公告)日：2022-12-06

申请号：US16957288

申请日：2018-12-25

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Kazuhiro Mishima ,  Takahiro Taira ,  Chiaki Okui ,  Takayuki Tanaka ,  Masayoshi Miyamoto ,  Taku Yamanaka

IPC: C08F2/46 ,  C08F2/50 ,  C08G61/04 ,  C08F14/26 ,  C08J3/16 ,  C08J3/28

Abstract: A method for producing a polytetrafluoroethylene powder, which includes applying an ultrasonic wave to a polytetrafluoroethylene aqueous dispersion containing polytetrafluoroethylene particles to coagulate the polytetrafluoroethylene particles.

公开(公告)号：US11279814B2

公开(公告)日：2022-03-22

申请号：US16498849

申请日：2018-03-30

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Taketo Kato ,  Satoru Yoneda ,  Manabu Fujisawa ,  Kazuya Asano ,  Takahiro Kitahara ,  Masahiro Higashi ,  Akiyoshi Yamauchi ,  Sumi Ishihara ,  Yosuke Kishikawa ,  Shinnosuke Nitta ,  Marina Nakano ,  Hirotoshi Yoshida ,  Yoshinori Nanba ,  Kengo Ito ,  Chiaki Okui ,  Hirokazu Aoyama ,  Masamichi Sukegawa ,  Taku Yamanaka ,  Hiroyuki Sato ,  Yuuji Tanaka ,  Kenji Ichikawa ,  Yohei Fujimoto

IPC: C08K5/41 ,  C08F14/26 ,  C08K5/098

Abstract: A method for producing a fluoropolymer which includes polymerizing a fluoromonomer in an aqueous medium in the presence of a surfactant to provide a fluoropolymer. The surfactant includes at least one selected from the group consisting of a surfactant represented by R1a—CO—R2a—CO—R3a—OSO3Xa and a surfactant represented by R1b—CO—(CR2b2)n—(OR3b)p—(CR4b2)q-L-OSO3Xb.