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11.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：US20220251251A1
公开(公告)日：2022-08-11
申请号：US17606360
申请日：2020-04-27
发明人： Tadao HAYASHI , Takahiro TAIRA , Hirotoshi YOSHIDA , Chiaki OKUI , Taku YAMANAKA , Taketo KATO
IPC分类号： C08F6/16 , C08F6/22 , C08F6/00 , C08F114/26 , C08F2/26 , C08F2/30 , B01J20/26 , B01J20/28 , B01J41/05 , B01J41/14 , B01J47/018 , C08L27/18
摘要： A method for producing a purified fluoropolymer aqueous dispersion, which includes: (A) bringing a fluoropolymer aqueous dispersion obtained using a hydrocarbon surfactant into contact with an anion exchange resin A or a synthetic adsorbent. The anion exchange resin A has an ion-exchange group represented by the following general formula (A1): —N+R1R2R3X— wherein each of R1, R2, and R3 are the same or different, and are each a hydrogen atom or an organic group, and at least one of R1, R2, and R3 is an organic group having 3 or more carbon atoms; and X is a counter ion; or an ion-exchange group represented by the following general formula (A2): —NR4R5 wherein each of R4 and R5 are the same or different, and are each a hydrogen atom or an organic group, and at least one of R4 and R5 is an organic group having 2 or more carbon atoms.
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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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14.发明申请公开(公告)号：US20210032381A1
公开(公告)日：2021-02-04
申请号：US16967965
申请日：2019-02-07
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
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 R5 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 and a composition including a fluoropolymer and the surfactant.
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公开(公告)号：US20170107368A1
公开(公告)日：2017-04-20
申请号：US15316031
申请日：2015-06-04
发明人： Yoshinori NANBA , Dai FUKAMI , Takuya YAMABE , Taketo KATO , Makoto ONO , Takahiro TAIRA , Hirotoshi YOSHIDA , Taku YAMANAKA
IPC分类号： C08L27/18
摘要： The present invention provides a polytetrafluoroethylene aqueous dispersion containing high-molecular-weight, significantly small polytetrafluoroethylene particles and having excellent dispersion stability. The present invention relates to an aqueous dispersion containing polytetrafluoroethylene particles containing a tetrafluoroethylene unit alone or a tetrafluoroethylene unit and a modifying monomer unit based on a modifying monomer copolymerizable with the tetrafluoroethylene. The polytetrafluoroethylene particles have a volume average particle size of not smaller than 0.1 nm but smaller than 20 nm, a melt flow rate of not lower than 0 g/10 min but lower than 80 g/10 min determined at 380° C. and 5 kg load, a melting point of 324° C. to 360° C., and an initial pyrolysis temperature of not lower than 400° C.
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16.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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17.发明公开公开(公告)号：US20240117087A1
公开(公告)日：2024-04-11
申请号：US18512794
申请日：2023-11-17
发明人： Yoshinori NANBA , Rina TAMAI , Takuma IWASAKA , Soushi TSUCHIYA , Kenji ICHIKAWA , Taketo KATO , Masaki IRIE , Taku YAMANAKA
IPC分类号： C08F214/26 , C08F2/16
CPC分类号： C08F214/265 , C08F2/16
摘要： A method for producing a fluoropolymer which method includes polymerizing a perfluoromonomer in an aqueous medium in the presence of a polymer (1) to obtain a fluoropolymer, wherein the content of a polymerized unit derived from the perfluoromonomer in the fluoropolymer is 90 mol % or more based on all polymerized units of the fluoropolymer, the polymer (1) is a polymer of a monomer (1) represented by the general formula (1): CF2═CF—O—R-(Rf-SO3M)m, a polymerized unit (1) derived from the monomer (1) in the polymer (1) is 50% by mass or more based on all polymerized units of the polymer (1), and the content of a dimer and a trimer of the monomer (1) in the polymer (1) is 1.0% by mass or less based on the polymer (1).
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公开(公告)号：US20240018280A1
公开(公告)日：2024-01-18
申请号：US18477801
申请日：2023-09-29
发明人： Hirofumi MUKAE , Yosuke KISHIKAWA , Taku YAMANAKA , Taketo KATO , Atsushi SAKAKURA , Ryuo ITOH , Hiroki KUBOTA , Ayane NAKAUE
CPC分类号： C08F14/26 , C08F2/18 , B29C43/003 , C08L27/18 , C08L2205/025 , C08L2205/03 , B29K2105/251
摘要： A fluororesin composition having no melt flowability, and a molded article obtained from the fluororesin composition. The fluororesin composition contains: a non-melt-flowable fluororesin A having a history of being heated to a melting point thereof or higher; a melt-flowable fluororesin B; and a non-melt-flowable fluororesin C including a portion having no history of being heated to a melting point thereof or higher.
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公开(公告)号：US20230348637A1
公开(公告)日：2023-11-02
申请号：US18349314
申请日：2023-07-10
发明人： Ranna YAMAZAKI , Taketo KATO , Taku YAMANAKA , Hirotoshi YOSHIDA , Takuya YAMABE , Akiho OGURA
IPC分类号： C08F114/26 , C08F2/26 , C08K5/14 , C08F6/22 , C08F6/20
CPC分类号： C08F114/26 , C08F2/26 , C08K5/14 , C08F6/22 , C08F6/20
摘要： A fluoropolymer composition production method for producing a fluoropolymer composition containing a fluoropolymer, the method which includes polymerizing a fluoromonomer in a reactor in the presence of a fluorine-containing surfactant, a polymerization initiator, and an aqueous medium to prepare an aqueous dispersion comprising a fluoropolymer; feeding an inert gas to the reactor; and subjecting to a heat treatment the aqueous dispersion in the reactor to give a fluoropolymer composition, wherein a temperature of the heat treatment is 35° C. or higher and a time of the heat treatment is 15 minutes or more.
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公开(公告)号：US20220204658A1
公开(公告)日：2022-06-30
申请号：US17687354
申请日：2022-03-04
发明人： Soushi TSUCHIYA , Taketo KATO , Masaki IRIE
摘要： A method for producing a perfluoroelastomer, which includes carrying out polymerization of a perfluoromonomer in an aqueous medium in the presence of a polymer (1) having a number average molecular weight of 0.3×104 or more to provide a perfluoroelastomer, the polymer (1) containing a polymerized unit (1) derived from a monomer represented by the following general formula (1): CX2═CY(—CZ2—O—Rf-A) (1) wherein X, Y, Z, Rf and A are as defined herein, with the proviso that at least one of X, Y, and Z contains a fluorine atom.
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