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公开(公告)号：EP4461770A1
公开(公告)日：2024-11-13
申请号：EP24744724.6
申请日：2024-01-18
发明人： KATO, Taketo , YAMANAKA, Taku , YAMAMOTO, Emi , USAMI, Ryota , NISHIMURA, Kenta
摘要： The disclosure provides a PTFE composition containing smaller amounts of water and/or impurities even if it is a polytetrafluoroethylene composition prepared using a hydrocarbon surfactant. Provided is a PTFE composition containing: PTFE; and at least one compound selected from the group consisting of a compound represented by the formula (1) and a compound represented by the formula (2), the polytetrafluoroethylene composition being substantially free from water:
Formula (1): (H-(CF 2 ) m-1 -COO) p M 1
wherein m is 4 to 20; M 1 is H, a metal atom, NR 5 4 (where R 5 s are optionally the same as or different from each other and each represent H or a C1-C10 organic group), or the like; and p is 1 or 2, and
Formula (2) : (H-(CF 2 ) n -SO 3 ) q M 2
wherein n is 4 to 20; M 2 is H, a metal atom, NR 5 4 (where R 5 is as defined above), or the like; and q is 1 or 2.-
公开(公告)号：EP4393966A1
公开(公告)日：2024-07-03
申请号：EP22876585.5
申请日：2022-09-30
发明人： KATO, Taketo , YASUDA, Kohei , YAMANAKA, Taku , MIYAMOTO, Masayoshi , MURAYAMA, Kenta , USAMI, Ryota , YOSHIDA, Hirotoshi , SATO, Hiroyuki , YAMAMOTO, Emi , NISHIMURA, Kenta , URAOKA, Nobuki
摘要： The disclosure aims to provide a polytetrafluoroethylene fine powder containing less water and less impurities. Provided is a polytetrafluoroethylene fine powder substantially free from water and a fluorine-containing compound having a molecular weight of 1000 or less.
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3.发明公开
公开(公告)号：EP4391117A1
公开(公告)日：2024-06-26
申请号：EP22876571.5
申请日：2022-09-30
发明人： KATO, Taketo , YAMADA, Takaya , YASUDA, Kohei , YAMANAKA, Taku , TERADA, Junpei , YAMADA, Masahiko , USAMI, Ryota , SATO, Hiroyuki , YAMAMOTO, Emi , NISHIMURA, Kenta
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.
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4.发明公开
公开(公告)号：EP4411897A1
公开(公告)日：2024-08-07
申请号：EP22876575.6
申请日：2022-09-30
发明人： KATO, Taketo , YAMADA, Takaya , YASUDA, Kohei , YAMANAKA, Taku , TERADA, Junpei , MIYAMOTO, Masayoshi , MURAYAMA, Kenta , USAMI, Ryota , YOSHIDA, Hirotoshi
摘要： The disclosure aims to provide a polytetrafluoroethylene powder for an electrode binder which is a sustainable product and can reduce or prevent gas generation inside a battery cell and deterioration of battery characteristics, 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 powder being substantially free from water and a fluorine-containing compound having a molecular weight of 1000 or less.
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公开(公告)号：EP4212556A1
公开(公告)日：2023-07-19
申请号：EP21864481.3
申请日：2021-09-07
发明人： YAMABE, Takuya , YAMAMOTO, Emi , SODA, Yoshihiro , YAMANAKA, Taku , USAMI, Ryota , KATO, Taketo , SHIROMARU, Tomohiro , NAKATANI, Yasukazu
IPC分类号： C08F6/14 , C08F214/26 , C08K5/053 , C08K5/06 , C08L27/18 , C08L33/04 , C09D127/18 , C08L71/02 , C09D7/63
摘要： Provided is 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.
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公开(公告)号：EP3828208A1
公开(公告)日：2021-06-02
申请号：EP19840194.5
申请日：2019-07-23
发明人： KATO, Taketo , FUJIMOTO, Yohei , ICHIKAWA, Kenji , SATO, Hiroyuki , USAMI, Ryota , NANBA, Yoshinori , YOSHIDA, Hirotoshi , ITO, Kengo , OKUI, Chiaki , SUKEGAWA, Masamichi , YAMANAKA, Taku , KISHIKAWA, Yosuke , AOYAMA, Hirokazu , YONEDA, Satoru , ISHIHARA, Sumi , HIGASHI, Masahiro , YAMAUCHI, Akiyoshi , NITTA, Shinnosuke , NAKANO, Marina
摘要： The present disclosure provides polytetrafluoroethylene having excellent stretchability.
Provided in the present disclosure is a polytetrafluoroethylene having a standard specific gravity of 2.175 or less and a thermal instability index (TII) of 20 or more.
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