Patents by Inventor Sumi Ishihara
Sumi Ishihara has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240109985Abstract: A fluoropolymer of a monomer (I) represented by the general formula (I), wherein a content of a polymerization unit (I) derived from the monomer (I) is 50% by mass or more based on all polymerization units constituting the fluoropolymer: CX2?CX—O—Rf—SO3M??General formula (I) wherein X is independently F or CF3; Rf is a fluorine-containing alkylene group having 1 to 40 carbon atoms or a fluorine-containing alkylene group having 2 to 100 carbon atoms and having an ether bond or a keto group; and 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. Also disclosed are an aqueous solution and coating composition containing the fluoropolymer.Type: ApplicationFiled: November 17, 2023Publication date: April 4, 2024Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Masahiro HIGASHI, Kanako NAKANISHI, Sumi ISHIHARA, Moe HOSOKAWA, Kensuke YAMATO, Kazuki KANEKO, Yosuke KISHIKAWA
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Publication number: 20240018081Abstract: An object of the present disclosure is to provide a method for producing a fluorinated organic compound, the method being capable of removing a sulfur-containing substance to a high degree, or provide a composition containing a fluorinated organic compound with a low content of a sulfur-containing substance. The present disclosure relates to a method for producing a fluorinated organic compound (pf), the method comprising: [A] reaction step A of fluorinating an organic sulfur compound (ss) with a fluorinating agent to obtain a composition (?) containing a fluorinated organic compound (pf); and [B] post-treatment step B of reacting the composition (?) with a nucleophile at a temperature of 40° C. or higher.Type: ApplicationFiled: September 25, 2023Publication date: January 18, 2024Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Atsushi SHIRAI, Yoshichika KUROKI, Yuusuke ETOU, Masayuki KISHIMOTO, Takashi NAMIKAWA, Sumi ISHIHARA, Makoto SUYAMA, Kenji ADACHI, Yosuke KISHIKAWA
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Publication number: 20230340169Abstract: 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.Type: ApplicationFiled: June 30, 2023Publication date: October 26, 2023Applicant: DAIKIN INDUSTRIES, LTD.Inventors: 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
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Patent number: 11767379Abstract: 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.Type: GrantFiled: March 1, 2019Date of Patent: September 26, 2023Assignee: DAIKIN INDUSTRIES, LTD.Inventors: 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
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Publication number: 20230287154Abstract: A method for producing a fluoropolymer, which includes polymerizing a monomer (I) represented by the general formula (I) in an aqueous medium to produce the fluoropolymer of the monomer (I), wherein an oxygen concentration in a reaction system of the polymerization is maintained at 500 ppm by volume or less: CX2?CY—CF2—O—Rf-A ??General formula (I): wherein X and Y are independently H, F, CH3, or CF3, and at least one of X and Y is F; Rf is a fluorine-containing alkylene group having 1 to 40 carbon atoms, or a fluorine-containing alkylene group having 2 to 100 carbon atoms and having an ether bond; and A is —COOM, —SO3M, —OSO3M, or —C(CF3)2OM, wherein M is H, a metal atom, NR74, imidazolium optionally having a substituent, pyridinium optionally having a substituent, or phosphonium optionally having a substituent, and R7 is H or an organic group.Type: ApplicationFiled: May 18, 2023Publication date: September 14, 2023Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Masahiro HIGASHI, Kensuke Yamato, Satoru Yoneda, Sumi Ishihara, Kanako Nakanishi, Yosuke Kishikawa
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Publication number: 20230279161Abstract: Provided is a fluoropolymer of a monomer (I) represented by the following general formula (I), wherein a content of a polymerization unit (I) derived from the monomer (I) is 40 mol % or more based on the entirety of polymerization units constituting the fluoropolymer, and the fluoropolymer has a weight average molecular weight (Mw) of 1.4×104 or more: CX2?CX—O—Rf-A??General formula (I) wherein X is independently F or CF3; Rf is a fluorine-containing alkylene group having 1 to 40 carbon atoms or a fluorine-containing alkylene group having 2 to 100 carbon atoms and having an ether bond or a keto group; and A is —COOM, —SO3M, —OSO3M, or —C(CF3)2OM, wherein M is —H, a metal atom, —NR74, imidazolium optionally having a substituent, pyridinium optionally having a substituent, or phosphonium optionally having a substituent, and R7 is H or an organic group.Type: ApplicationFiled: May 15, 2023Publication date: September 7, 2023Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Masahiro Higashi, Kensuke Yamato, Sumi Ishihara, Kanako Nakanishi, Yosuke Kishikawa, Hirokazu Aoyama
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Publication number: 20230242468Abstract: Provided is a novel production method for a fluorinated organic compound (1), the method comprising step A of fluorinating a hydrogen atom-containing organic compound (2) using IF5 in a liquid composition comprising an organic solvent, the amount of the hydrogen atom-containing organic compound (2) being 1.8 mol or more per liter of the organic solvent.Type: ApplicationFiled: March 29, 2023Publication date: August 3, 2023Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Atsushi SHIRAI, Takashi NAMIKAWA, Sumi ISHIHARA, Kenji ADACHI, Yosuke KISHIKAWA, Yoshichika KUROKI
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Publication number: 20230234910Abstract: Disclosed is a method for producing an acrylic acid derivative represented by formula (1): wherein R1 represents hydrogen or the like; R3 represents hydrogen or the like; and X represents hydrogen or the like, the method comprising step B of bringing an organic metal compound represented by formula (A3A): wherein R2, in each occurrence, is the same or different and represents hydrogen or like; R3 represents hydrogen or the like; X represents hydrogen or the like; and M represents hydrogen or the like, or an organic metal compound represented by formula (A3B): wherein the symbols are as defined above, or a combination thereof, into contact with a proton donor and an aldehyde compound to obtain a compound represented by formula (1).Type: ApplicationFiled: March 9, 2023Publication date: July 27, 2023Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Makoto MATSUURA, Manaho TOMIOKA, Michiaki OKADA, Atsushi SHIRAI, Sumi ISHIHARA, Yosuke KISHIKAWA
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Patent number: 11708324Abstract: A sulfuric acid ester containing a plurality of carbonyl groups or a salt thereof, and a surfactant. The sulfuric acid ester is a compound represented by the following formula: R1—C(?O)—R2—C(?O)—R3—OSO3X wherein R1, R2 and R3 are defined herein; X is H, a metal atom, NR44, imidazolium optionally containing a substituent, pyridinium optionally containing a substituent, or phosphonium optionally containing a substituent, where R4s are each H or an organic group and are the same as or different from each other; and any two of R1, R2, and R3 optionally bind to each other to form a ring. Also disclosed is a surfactant containing the sulfuric acid ester and an aqueous dispersant containing the sulfuric acid ester.Type: GrantFiled: June 17, 2021Date of Patent: July 25, 2023Assignee: DAIKIN INDUSTRIES. LTD.Inventors: Satoru Yoneda, Manabu Fujisawa, Kazuya Asano, Takahiro Kitahara, Masahiro Higashi, Akiyoshi Yamauchi, Sumi Ishihara, Yosuke Kishikawa
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Publication number: 20230220129Abstract: 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.Type: ApplicationFiled: March 9, 2023Publication date: July 13, 2023Applicant: DAIKIN INDUSTRIES, LTD.Inventors: 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
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Patent number: 11680037Abstract: A novel branched fluorine-containing compound represented by formula (1): wherein L represents a predetermined carbon-containing linker moiety; Rf, in each occurrence, is the same or different and represents fluoroalkyl optionally having at least one ether bond; Y, in each occurrence, is the same or different and represents a predetermined divalent linking group or a bond; RY, in each occurrence, is the same or different and represents hydrogen or an organic group; L represents an (n1+n2)-valent carbon-containing linker moiety having at least one carbon atom; n1 represents a number greater than or equal to 1; n2 represents a number greater than or equal to 1; n1+n2 is a number from 3 to 6; X, in each occurrence, is the same or different and represents a divalent linking group or a bond; A, in each occurrence, is the same or different and represents -ArSO3M or the like; M, in each occurrence, is the same or different and represents hydrogen, —NR4, or a metal salt; and R represents hydrogen or a C1-4 organiType: GrantFiled: July 28, 2021Date of Patent: June 20, 2023Assignee: DAIKIN INDUSTRIES, LTD.Inventors: Masahiro Higashi, Moe Hosokawa, Akiyoshi Yamauchi, Sumi Ishihara, Yosuke Kishikawa
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Patent number: 11634514Abstract: 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.Type: GrantFiled: February 7, 2019Date of Patent: April 25, 2023Assignee: DAIKIN INDUSTRIES. LTD.Inventors: 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
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Publication number: 20230101829Abstract: 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.Type: ApplicationFiled: October 26, 2022Publication date: March 30, 2023Applicant: DAIKIN INDUSTRIES, LTD.Inventors: 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
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Patent number: 11512155Abstract: 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.Type: GrantFiled: March 30, 2018Date of Patent: November 29, 2022Assignee: DAIKIN INDUSTRIES, LTD.Inventors: 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
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Publication number: 20220348699Abstract: Provided is a method for producing a fluoropolymer, the method including a polymerizing step of polymerizing tetrafluoroethylene in an aqueous medium in the presence of an initiator, a chain transfer agent, and a surfactant to provide a fluoropolymer containing more than 80 mol % of a polymerized unit based on tetrafluoroethylene, the chain transfer agent including at least one selected from the group consisting of a dithioester compound, a dithiocarbamate compound, a trithiocarbonate compound, and a xanthate compound. Also provided is a fluoropolymer represented by the formula Af-CRP defined in the description.Type: ApplicationFiled: June 24, 2022Publication date: November 3, 2022Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Marina NAKANO, Masahiro Higashi, Sumi Ishihara, Yosuke Kishikawa
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Patent number: 11440875Abstract: A sulfonic acid or carboxylic acid containing a carbonyl group, or a salt thereof represented by the following formula: R1—C(?O)—(CR22)n—(OR3)p—(CR42)q-L-A wherein R1, R2, R3, R4, n, p, q, A and L are as defined herein.Type: GrantFiled: March 30, 2018Date of Patent: September 13, 2022Assignee: DAIKIN INDUSTRIES, LTD.Inventors: Masahiro Higashi, Satoru Yoneda, Akiyoshi Yamauchi, Sumi Ishihara, Yosuke Kishikawa, Marina Nakano, Shinnosuke Nitta, Hirokazu Aoyama
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Publication number: 20220259337Abstract: A method for producing a fluoropolymer aqueous dispersion, including a step A of performing ultrafiltration, microfiltration, or dialysis membrane treatment, or a combination thereof on a pretreatment aqueous dispersion containing a fluoropolymer obtained by polymerization in the presence of a polymer (I) including a polymerized unit (I) derived from a monomer represented by the following general formula (I), with the proviso that the fluoropolymer is other than the polymer (I): CX1X3?CX2R(—CZ1Z2-A0)m??(I) wherein X1 and X3 are each independently F, Cl, H, or CF3; X2 is H, F, an alkyl group, or a fluorine-containing alkyl group; A0 is an anionic 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.Type: ApplicationFiled: April 27, 2020Publication date: August 18, 2022Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Satoru YONEDA, Masahiro HIGASHI, Sumi ISHIHARA, Hirotoshi YOSHIDA, Yohei FUJIMOTO
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Publication number: 20220259135Abstract: An object of the present disclosure is to provide a method for producing a fluoroacetic acid ester with excellent economic efficiency, quality, and productivity. The object can be solved by a method for producing a compound represented by formula (1): wherein R is an organic group, the method comprising: the step of reacting a compound represented by formula (2): wherein X is a leaving group other than fluorine, and R is as defined above, with a compound represented by formula (3): MFn(3), wherein M is a cation and n is an integer corresponding to the valence of the cation, wherein the compound represented by formula (3) is used in an amount of 0.9 moles or less per mole of the compound represented by formula (2).Type: ApplicationFiled: April 27, 2022Publication date: August 18, 2022Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Atsushi SHIRAI, Sumi ISHIHARA, Makoto MATSUURA, Yosuke KISHIKAWA
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Publication number: 20220213277Abstract: A method for producing a fluoropolymer aqueous dispersion, including a step A of subjecting a pre-treatment aqueous dispersion containing a fluoropolymer obtained by polymerization in the presence of a hydrocarbon surfactant to ultrafiltration, microfiltration, or dialysis membrane treatment, or a combination thereof The ultrafiltration is performed using an ultrafiltration membrane having a molecular weight cutoff of 0.3×104 Da or more.Type: ApplicationFiled: April 27, 2020Publication date: July 7, 2022Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Satoru YONEDA, Masahiro HIGASHI, Sumi ISHIHARA, Hirotoshi YOSHIDA, Yohei FUJIMOTO, Yosuke KISHIKAWA
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Publication number: 20220195080Abstract: A method for producing a composition including a step A of performing ultrafiltration, microfiltration, dialysis membrane treatment, or a combination thereof on a composition containing water and a fluoropolymer. The fluoropolymer is a polymer having a structural unit M3 derived from a monomer represented by general formula (1): CX2?CY(—CZ2—O—Rf-A)??(1) where 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 fluorine-containing alkylene group having 1 to 40 carbon atoms or a fluorine-containing alkylene group having 2 to 100 carbon atoms and having an ether bond; and A is —COOM, —SO3M, —OSO3M, or —C(CF3)2OM, wherein M is as defined herein; provided that at least one of X, Y, and Z includes a fluorine atom.Type: ApplicationFiled: April 27, 2020Publication date: June 23, 2022Applicant: DAIKIN INDUSTRIES LTDInventors: Masahiro HIGASHI, Sumi ISHIHARA, Satoru YONEDA, Yosuke KISHIKAWA, Hirokazu AOYAMA