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公开(公告)号：US20240002558A1
公开(公告)日：2024-01-04
申请号：US18467238
申请日：2023-09-14
发明人： Hiroyuki SATO , Kenji Ichikawa , Taketo Kato , Taku Yamanaka
IPC分类号： C08F114/26
CPC分类号： C08F114/26
摘要： The present disclosure provides a method for producing a fluororesin, which includes polymerizing a fluorine-containing monomer in the presence of a compound (1) having triple bond and a hydrophilic group and an aqueous medium to produce a fluororesin, a fluororesin comprising a unit based on a compound (1) having triple bond and a hydrophilic group, and a fluorine-containing monomer unit, and an aqueous dispersion comprising the fluororesin and an aqueous medium.
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2.发明公开公开(公告)号：US20240282968A1
公开(公告)日：2024-08-22
申请号：US18617997
申请日：2024-03-27
发明人： Taketo KATO , Takaya YAMADA , Kohei YASUDA , Taku YAMANAKA , Junpei TERADA , Masahiko YAMADA , Ryota USAMI , Hiroyuki SATO , Emi YAMAMOTO , Kenta NISHIMURA
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.
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公开(公告)号：US20220119561A1
公开(公告)日：2022-04-21
申请号：US17424715
申请日：2020-01-31
发明人： Taketo KATO , Yohei FUJIMOTO , Kenji ICHIKAWA , Hiroyuki SATO , Yoshinori NANBA , Hirotoshi YOSHIDA , Kengo ITO , Taku YAMANAKA
IPC分类号： C08F114/26
摘要： A method for producing polytetrafluoroethylene includes a step of polymerizing tetrafluoroethylene in an aqueous medium in the presence of a hydrocarbon surfactant and a polymerization initiator to obtain polytetrafluoroethylene and a step of adding at least one selected from the group consisting of a radical scavenger and a decomposer of a polymerization initiator after the initiation of polymerization.
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4.发明申请公开(公告)号：US20210108008A1
公开(公告)日：2021-04-15
申请号：US16499047
申请日：2018-03-30
发明人： 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 , Yuuji TANAKA , Kenji ICHIKAWA , Yohei FUJIMOTO , Hiroyuki SATO
摘要： A method for producing a fluoropolymer of the invention 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-Aa and a surfactant represented by R1b—CO—(CR2b2)n—(OR3b)p—(CR4b2)q-L-Ab.
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5.发明公开公开(公告)号：US20240317907A1
公开(公告)日：2024-09-26
申请号：US18655177
申请日：2024-05-03
发明人： 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 , Yuuji TANAKA , Kenji ICHIKAWA , Yohei FUJIMOTO , Hiroyuki SATO
CPC分类号： C08F14/26 , C08K5/098 , C08K5/42 , C08K2201/014 , C08K2201/019
摘要： Composition including (a) a fluoropolymer; and (b1) at least one of a compound represented by the formula (4) ((H—(CF2)7—COO)pM1) or the formula (4′) ((H—(CF2)8—COO)pM1) of the present disclosure, both respectively in an amount of 100 ppb or less relative to the fluoropolymer, or (b2) at least one of a compound represented by the formula (5) ((H—(CF2)13—COO)pM1) or the formula (5′) ((H—(CF2)14—COO)pM1) of the present disclose, both respectively in an amount of 100 ppb or less relative to the fluoropolymer.
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6.发明公开公开(公告)号：US20230220129A1
公开(公告)日：2023-07-13
申请号：US18119371
申请日：2023-03-09
发明人： Taketo KATO , Satoru YONEDA , Masahiro HIGASHI , Akiyoshi YAMAUCHI , Sumi ISHIHARA , Yosuke KISHIKAWA , Moe HOSOKAWA , Marina NAKANO , Hirotoshi YOSHIDA , Yoshinori NANBA , Kengo ITO , Chiaki OKUI , Kenji ICHIKAWA , Yohei FUJIMOTO , Hirokazu AOYAMA , Masamichi SUKEGAWA , Taku YAMANAKA , Hiroyuki SATO
IPC分类号： C08L27/18 , C08F2/28 , C08F114/26 , C08K5/19
CPC分类号： C08L27/18 , C08F2/28 , C08F114/26 , C08K5/19
摘要： 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 being represented by the general formula (1): CR1R2R4—CR3R5—X-A, wherein R1 to R5 are each H or a monovalent substituent, with the proviso that at least one of R1 and R3 represents a group represented by the general formula: —Y—R6 and at least one of R2 and R3 represents a group represented by the general formula: —X-A or a group represented by the general formula: —Y—R6; and A is the same or different at each occurrence and is —COOM, —SO3M, or —OSO3M. Also disclosed is a surfactant for polymerization represented by the general formula (1), a method for producing a fluoropolymer using the surfactant, a composition including a fluoropolymer and the surfactant and a molded body including the composition.
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公开(公告)号：US20220315713A1
公开(公告)日：2022-10-06
申请号：US17602448
申请日：2020-04-16
发明人： Chiaki OKUI , Hirotoshi YOSHIDA , Hiroyuki SATO , Kenji ICHIKAWA , Taketo KATO , Taku YAMANAKA
摘要： A method for producing a fluoropolymer powder including (A1) adding, to a fluoropolymer aqueous dispersion obtained by polymerization using a carboxylic acid type hydrocarbon surfactant, and an acid to adjust a pH to 4.0 or less and cause coagulation to thereby obtain a wet fluoropolymer powder containing a fluorine-containing compound represented by the following general formula (1A), and (B1) heat-treating the wet fluoropolymer powder at a temperature higher than 150° C. and lower than 240° C.: General Formula (1A): H—(CF2)m—COOH wherein m is 3 to 19.
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公开(公告)号：US20210340290A1
公开(公告)日：2021-11-04
申请号：US17280554
申请日：2019-10-03
发明人： Taketo KATO , Yohei FUJIMOTO , Kenji ICHIKAWA , Hiroyuki SATO , Yoshinori NANBA , Hirotoshi YOSHIDA , Kengo ITO , Chiaki OKUI , Masamichi SUKEGAWA , Taku YAMANAKA
IPC分类号： C08F14/26
摘要： A method for producing polytetrafluoroethylene which include polymerizing tetrafluoroethylene and a modifying monomer in an aqueous medium in the presence of a hydrocarbon surfactant to obtain polytetrafluoroethylene. An amount of the hydrocarbon surfactant at the initiation of polymerization is more than 50 ppm based on the aqueous medium. Further, the polytetrafluoroethylene contains 99.0% by mass or more of a polymerization unit based on tetrafluoroethylene and 1.0% by mass or less of a polymerization unit based on the modifying monomer.
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9.发明申请公开(公告)号：US20230101829A1
公开(公告)日：2023-03-30
申请号：US17974402
申请日：2022-10-26
发明人： 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 , Yuuji TANAKA , Kenji ICHIKAWA , Yohei FUJIMOTO , Hiroyuki SATO
摘要： A composition including a fluoropolymer and substantially free from a compound represented by the following formula (3): (H—(CF2)8—SO3)qM2, wherein M2 is H, a metal atom, NR54, imidazolium optionally containing a substituent, pyridinium optionally containing a substituent, or phosphonium optionally containing a substituent; R5s are each H or an organic group and are the same as or different from each other; and q is 1 or 2.
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公开(公告)号：US20220010118A1
公开(公告)日：2022-01-13
申请号：US17294871
申请日：2019-11-19
发明人： Yoshinori NANBA , Kenji ICHIKAWA , Yohei FUJIMOTO , Hirotoshi YOSHIDA , Hiroyuki SATO , Taketo KATO , Kengo ITO , Taku YAMANAKA
IPC分类号： C08L27/18
摘要： A composition including a polytetrafluoroethylene and a polymer (I) containing a polymerization unit (I) based on a monomer represented by the following general formula (I), the composition having a standard specific gravity of 2.200 or less: CX1X3═CX2R(—CZ1Z2-A0)m (I) wherein X1 and X3 are each independently F, Cl, H, or CF3; A0 is an anionic group; X2 is H, F, an alkyl group, or a fluorine-containing alkyl group; R is a linking group; Z1 and Z2 are each independently H, F, an alkyl group, or a fluorine-containing alkyl group; and m is an integer of 1 or more.
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