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公开(公告)号：US20220119556A1
公开(公告)日：2022-04-21
申请号：US17428677
申请日：2020-02-07
发明人： Takahiro TAIRA , Chiaki OKUI , Hirotoshi YOSHIDA , Yuuji TANAKA , Taku YAMANAKA , Taketo KATO
摘要： A composition having a breaking strength of 10.0 N or more, containing a polytetrafluoroethylene, and substantially free from a compound represented by the following general formula (3): (H—(CF2)8—SO3)qM2 General Formula (3): wherein M2 is H, a metal atom, NR54, where each R5 may be the same or different and is H or an organic group having 1 to 10 carbon atoms, imidazolium optionally having a substituent, pyridinium optionally having a substituent, or phosphonium optionally having a substituent; and q is 1 or 2.
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公开(公告)号：US20210363031A1
公开(公告)日：2021-11-25
申请号：US17280972
申请日：2019-10-03
发明人： Takahiro TAIRA , Tadao HAYASHI , Chiaki OKUI , Ryou HATAYAMA , Michinobu KOIZUMI , Taketo KATO , Yuuji TANAKA , Hirotoshi YOSHIDA
摘要： A method for removing a fluorine-containing compound from discharge water, which includes bringing discharge water containing two or more fluorine-containing compounds represented by the following general formula (1) or (2) into contact with an adsorbent so as to adsorb the two or more fluorine-containing compounds: (H—(CF2)m—COO)pM1 General Formula (1): wherein m is 3 to 19, M1 is H, a metal atom, NRb4, where Rb is the same or different and is H or an organic group having 1 to 10 carbon atoms, imidazolium optionally having a substituent, pyridinium optionally having a substituent, or phosphonium optionally having a substituent; and p is 1 or 2; (H—(CF2)n—SO3)qM2 General Formula (2): wherein n is 4 to 20; M2 is H, a metal atom, NRb4, where Rb is the same as above, imidazolium optionally having a substituent, pyridinium optionally having a substituent, or phosphonium optionally having a substituent; and q is 1 or 2.
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3.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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4.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：US20210388126A1
公开(公告)日：2021-12-16
申请号：US16957288
申请日：2018-12-25
发明人： Kazuhiro MISHIMA , Takahiro TAIRA , Chiaki OKUI , Takayuki TANAKA , Masayoshi MIYAMOTO , Taku YAMANAKA
摘要： 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.
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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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8.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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9.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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