公开(公告)号：US20230203297A1

公开(公告)日：2023-06-29

申请号：US18178918

申请日：2023-03-06

申请人： DAIKIN INDUSTRIES, LTD.

发明人： Takuya YAMABE ,  Emi YAMAMOTO ,  Yoshihiro SODA ,  Taku YAMANAKA ,  Ryota USAMI ,  Taketo KATO ,  Tomohiro SHIROMARU ,  Yasukazu NAKATANI

IPC分类号： C08L27/24 ,  C08L27/18 ,  C08F2/30

CPC分类号： C08L27/24 ,  C08F2/30 ,  C08L27/18 ,  C08L2201/54

摘要： A modified polytetrafluoroethylene aqueous dispersion having low viscosity at high temperature. The modified polytetrafluoroethylene aqueous dispersion contains a modified polytetrafluoroethylene and a nonionic surfactant, has a modified polytetrafluoroethylene solid concentration of 50 to 70% by mass, is substantially free from a fluorine-containing surfactant, and has a viscosity at 55° C. of 80 mPa•s or lower, and the modified polytetrafluoroethylene contains 0.050% by mass or more and 1.00% by mass or less of a polymerized unit based on a modifying monomer.

公开(公告)号：US20240282968A1

公开(公告)日：2024-08-22

申请号：US18617997

申请日：2024-03-27

申请人： DAIKIN INDUSTRIES, LTD.

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

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

CPC分类号： H01M4/623 ,  C08L27/18 ,  H01M4/13 ,  C08L2201/50

摘要： 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：US20210221992A1

公开(公告)日：2021-07-22

申请号：US17262368

申请日：2019-07-23

申请人： DAIKIN INDUSTRIES, LTD.

发明人： Taketo KATO ,  Yohei FUJIMOTO ,  Kenji ICHIKAWA ,  Hiroyuki SATO ,  Ryota USAMI ,  Yoshinori NANBA ,  Hirotoshi YOSHIDA ,  Kengo ITO ,  Chiaki OKUI ,  Masamichi SUKEGAWA ,  Taku YAMANAKA ,  Yosuke KISHIKAWA ,  Hirokazu AOYAMA ,  Satoru YONEDA ,  Sumi ISHIHARA ,  Masahiro HIGASHI ,  Akiyoshi YAMAUCHI ,  Shinnosuke NITTA ,  Marina NAKANO

IPC分类号： C08L27/18 ,  C08J5/18 ,  C08J3/12 ,  B29C71/02

摘要： A polytetrafluoroethylene having a breaking strength of 10.0 N or more and a thermal instability index (TII) of 20 or more. Also disclosed is a stretched body including the polytetrafluoroethylene.