公开(公告)号：US20210388126A1

公开(公告)日：2021-12-16

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: 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：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：US20200255551A1

公开(公告)日：2020-08-13

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

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: Formula (1): (H—(CF2)m—COO)pM1; or Formula (2): (H—(CF2)n—SO3)qM2.Also disclosed is a composition containing polytetrafluoroethylene substantially free from a compound represented by Formula (3) below and a molded body including the composition: Formula (3): (H—(CF2)8—SO3)qM2.

公开(公告)号：US20140336315A1

公开(公告)日：2014-11-13

申请号：US14338802

申请日：2014-07-23

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Taku YAMANAKA ,  Masayoshi MIYAMOTO ,  Shunji KASAI ,  Masayuki TSUJI ,  Kazuya KAWAHARA ,  Mayumi YAMAUCHI ,  Taketo KATO ,  Yasuhiko SAWADA

IPC: C08L69/00 ,  C08L27/22

CPC classification number: C08L69/00 ,  C08F214/26 ,  C08J3/16 ,  C08J3/203 ,  C08J2327/18 ,  C08J2369/00 ,  C08J2427/18 ,  C08L27/18 ,  C08L27/22 ,  C08L67/02 ,  Y10T428/2982 ,  C08F214/28 ,  C08F2/26

Abstract: Provided is a dripping inhibitor excellent in handling characteristics. The present invention provides a dripping inhibitor including a modified polytetrafluoroethylene, the inhibitor having an average particle size of 300 to 800 μm, an apparent density of 0.40 to 0.52 g/ml, a compression ratio of 1.20 or less, an aggregate disintegration degree with 50-sec vibration of 70% or more, a cylinder extrusion pressure at a reduction ratio 1500 of 80 MPa or less, and a standard specific gravity (SSG) of 2.140 to 2.230.

Abstract translation: 具有处理性优异的滴液抑制剂。 本发明提供一种包含改性聚四氟乙烯的防滴落剂，该平均粒度为300〜800μm，表观密度为0.40〜0.52g / ml，压缩比为1.20以下，聚集体崩解度为50 -sec振动为70％以上，压下率1500为80MPa以下的圆筒挤出压力为2.140〜2.230的标准比重（SSG）。

公开(公告)号：US20240117077A1

公开(公告)日：2024-04-11

申请号：US18387843

申请日：2023-11-07

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 composition containing polytetrafluoroethylene and substantially free from a compound represented by Formula (3):


(H—(CF2)8—SO3)qM2

wherein M2 is H, a metal atom, NR54 (where R5s may be the same as or different from each other and are each H or an organic group having 1 to 10 carbon atoms), an imidazolium optionally having a substituent, a pyridinium optionally having a substituent, or a phosphonium optionally having a substituent, and q is 1 or 2. Also disclosed is a molded boy including the composition.

公开(公告)号：US20240075481A1

公开(公告)日：2024-03-07

申请号：US18507699

申请日：2023-11-13

Applicant: DAIKIN INDUSTRIES, LTD. ,  Daikin Fluorochemicals (China) Co., Ltd.

Inventor： Masayoshi MIYAMOTO ,  Hiroyuki SENDAN ,  Kouichi HIROTA ,  Makoto KAWAMORITA ,  Tsunehiko FUWA

IPC: B03C1/32

CPC classification number: B03C1/32

Abstract: A method for removing metallic foreign matter from a fluororesin and a method for producing a fluororesin with reduced metallic foreign matter, which methods include applying a magnetic field to a fluororesin with a magnet while dropping the fluororesin by gravity to thereby remove metal, wherein the methods provide a screen made of a magnetic material in a flow path of the fluororesin dropped by gravity, and when the fluororesin passes through the screen, the screen is not vibrated.