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公开(公告)号：US20240294401A1
公开(公告)日：2024-09-05
申请号：US18648761
申请日：2024-04-29
发明人： Takahiro TAIRA , Tadao Hayashi , Chiaki Okui , Ryou Hatayama , Michinobu Koizumi , Taketo Kato , Yuuji Tanaka , Hirotoshi Yoshida
IPC分类号： C02F1/28 , B01J20/20 , B01J20/28 , B01J41/04 , B01J41/12 , C02F1/42 , C02F101/36 , C02F103/38 , C08F14/26
CPC分类号： C02F1/283 , B01J20/20 , B01J20/28064 , B01J20/2808 , B01J20/28083 , B01J20/28085 , B01J41/04 , B01J41/12 , C02F1/42 , C08F14/26 , C02F2001/422 , C02F2101/36 , C02F2103/38
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.-
公开(公告)号：US20230340169A1
公开(公告)日：2023-10-26
申请号：US18216644
申请日：2023-06-30
发明人： Yoshinori Nanba , Kenji Ichikawa , Yohei Fujimoto , Hirotoshi Yoshida , Hiroyuki Sato , Taketo Kato , Kengo Ito , Sumi Ishihara , Masahiro Higashi , Satoru Yoneda , Hirokazu Aoyama , Masamichi Sukegawa , Yosuke Kishikawa , Takahiro Taira , Chiaki Okui , Taku Yamanaka
IPC分类号： C08F14/26 , B29C55/00 , C08F2/22 , C08F2/44 , C08F261/06 , C08F114/26 , C08F214/26
CPC分类号： C08F14/26 , B29C55/005 , C08F2/22 , C08F2/44 , C08F261/06 , C08F114/26 , C08F214/26 , B29K2027/18
摘要： A method for producing a fluoropolymer, which includes polymerizing a fluoromonomer in an aqueous medium in the presence of a polymer (1), the polymer (1) including a polymerized unit derived from a monomer CX2═CY(—CZ2—O—Rf-A), wherein X is the same or different and is —H or —F; Y is —H, —F, an alkyl group, or a fluorine-containing alkyl group; Z is the same or different and is —H, —F, an alkyl group, or a fluoroalkyl group; Rf is a C1-C40 fluorine-containing alkylene group or a C-C100 fluorine-containing alkylene group and having an ether bond; and A is —COOM, —SO3M, or —OSO3M, wherein M is —H, a metal atom, —NR74, imidazolium optionally having a substituent, pyridinium optionally having a substituent, or phosphonium optionally having a substituent, wherein R7 is H or an organic group, providing that at least one of X, Y, and Z contains a fluorine atom.
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公开(公告)号：US11634514B2
公开(公告)日：2023-04-25
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
IPC分类号： C08F14/26 , C08F2/26 , C08F2/22 , C08F114/26 , C08F214/22 , C08K5/11
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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4.发明授权公开(公告)号：US12012470B2
公开(公告)日：2024-06-18
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
CPC分类号： C08F14/26 , C08K5/098 , C08K5/42 , C08K2201/014 , C08K2201/019
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：US11767379B2
公开(公告)日：2023-09-26
申请号：US16976945
申请日：2019-03-01
发明人： Yoshinori Nanba , Kenji Ichikawa , Yohei Fujimoto , Hirotoshi Yoshida , Hiroyuki Sato , Taketo Kato , Kengo Ito , Sumi Ishihara , Masahiro Higashi , Satoru Yoneda , Hirokazu Aoyama , Masamichi Sukegawa , Yosuke Kishikawa , Takahiro Taira , Chiaki Okui , Taku Yamanaka
IPC分类号： C08F14/26 , B29C55/00 , C08F2/22 , C08F2/44 , C08F261/06 , C08F114/26 , C08F214/26 , B29K27/18
CPC分类号： C08F14/26 , B29C55/005 , C08F2/22 , C08F2/44 , C08F114/26 , C08F214/26 , C08F261/06 , B29K2027/18
摘要： A method for producing a fluoropolymer, which includes polymerizing a fluoromonomer in an aqueous medium in the presence of a polymer (1), the polymer (1) including a polymerized unit derived from a monomer CX2═CY(—CZ2—O—Rf-A), wherein X is the same or different and is —H or —F; Y is —H, —F, an alkyl group, or a fluorine-containing alkyl group; Z is the same or different and is —H, —F, an alkyl group, or a fluoroalkyl group; Rf is a C1-C40 fluorine-containing alkylene group or a C—C100 fluorine-containing alkylene group and having an ether bond; and A is —COOM, —SO3M, or —OSO3M, wherein M is —H, a metal atom, —NR74, imidazolium optionally having a substituent, pyridinium optionally having a substituent, or phosphonium optionally having a substituent, wherein R7 is H or an organic group, providing that at least one of X, Y, and Z contains a fluorine atom.
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6.发明授权公开(公告)号：US11512155B2
公开(公告)日：2022-11-29
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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公开(公告)号：US12030790B2
公开(公告)日：2024-07-09
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
IPC分类号： B01J41/04 , B01J20/20 , B01J20/28 , B01J41/12 , C02F1/28 , C02F1/42 , C02F101/36 , C02F103/38 , C08F14/26
CPC分类号： C02F1/283 , B01J20/20 , B01J20/28064 , B01J20/2808 , B01J20/28083 , B01J20/28085 , B01J41/04 , B01J41/12 , C02F1/42 , C08F14/26 , C02F2001/422 , C02F2101/36 , C02F2103/38
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.-
公开(公告)号：US11952441B2
公开(公告)日：2024-04-09
申请号：US17280940
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： C08F114/26 , C08L27/18
CPC分类号： C08F114/26 , C08L27/18
摘要： A method for producing polytetrafluoroethylene, which includes polymerizing tetrafluoroethylene in an aqueous medium in the presence of a nucleating agent and a hydrocarbon anionic surfactant to obtain polytetrafluoroethylene. A total amount of the nucleating agent and the hydrocarbon anionic surfactant at the initiation of polymerization is more than 50 ppm based on the aqueous medium.
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公开(公告)号：US11851519B2
公开(公告)日：2023-12-26
申请号：US16637601
申请日：2018-08-10
发明人： Takahiro Taira , Kazuhiro Mishima , Chiaki Okui , Tadao Hayashi , Hirotoshi Yoshida , Yuuji Tanaka , Masayoshi Miyamoto , Taku Yamanaka , Taketo Kato
摘要： A method for producing an aqueous dispersion of purified polytetrafluoroethylene, the method including: removing or reducing a compound represented by Formula (1) or (2) below from an aqueous dispersion of polytetrafluoroethylene obtained using a hydrocarbon surfactant:
(H—(CF2)m—COO)pM1; or Formula (1):
(H—(CF2)n—SO3)qM2. Formula (2):
Also disclosed is a composition containing polytetrafluoroethylene substantially free from a compound represented by Formula (3) below and a molded body including the composition:
(H—(CF2)8—SO3)qM2. Formula (3):-
公开(公告)号：US11518826B2
公开(公告)日：2022-12-06
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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