Patents by Inventor Keiko Washino
Keiko Washino 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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Patent number: 11697276Abstract: A coating film obtained from a composition containing a polyaspartic acid ester and a fluoropolymer. Also disclosed is fluorine-containing coating film including a urethane bond and a urea bond, and exhibiting a corrosion from scribe of 1 mm or shorter. Both coating films have a thickness of 100 to 1000 ?m. Also disclosed is a laminate including a base and one or the other of the coating films.Type: GrantFiled: May 22, 2020Date of Patent: July 11, 2023Assignee: DAIKIN INDUSTRIES, LTD.Inventors: Keiko Washino, Katsuhiko Imoto, Koichiro Ogita, Susumu Wada, Yasukazu Nakatani
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Publication number: 20200282713Abstract: A coating film obtained from a composition containing a polyaspartic acid ester and a fluoropolymer. Also disclosed is fluorine-containing coating film including a urethane bond and a urea bond, and exhibiting a corrosion from scribe of 1 mm or shorter. Both coating films have a thickness of 100 to 1000 ?m. Also disclosed is a laminate including a base and one or the other of the coating films.Type: ApplicationFiled: May 22, 2020Publication date: September 10, 2020Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Keiko WASHINO, Katsuhiko IMOTO, Koichiro OGITA, Susumu WADA, Yasukazu NAKATANI
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Publication number: 20180222168Abstract: The invention provides a composition capable of forming a coating film that is excellent in salt water resistance and weather resistance and is less likely to deteriorate for a long time. The composition contains a polyaspartic acid ester and a fluoropolymer.Type: ApplicationFiled: August 5, 2016Publication date: August 9, 2018Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Keiko WASHINO, Katsuhiko IMOTO, Koichiro OGITA, Susumu WADA, Yasukazu NAKATANI
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Patent number: 8981009Abstract: The present invention provides a TFE/Pr type elastomer being excellent in not only amine resistance but also heat resistance and chemical resistance and having a small gel content, and a crosslinkable composition comprising the elastomer. The above-mentioned fluorine-containing elastomer is a fluorine-containing elastomer being crosslinkable with the compound (A), comprising 40 to 70% by mole of tetrafluoroethylene unit, 30 to 60% by mole of propylene unit and 0.1 to 2.5% by mole of a carboxyl group-containing vinyl monomer unit and having a Mooney viscosity at 121° C. of 5 to 100.Type: GrantFiled: March 19, 2009Date of Patent: March 17, 2015Assignee: Daikin Industries, Ltd.Inventors: Keiko Washino, Shigeru Morita, Takashi Yoshimura, Mitsuru Kishine
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Patent number: 8450423Abstract: A fluoroelastomer mixture, including: a peroxide-vulcanizable fluoroelastomer (A) containing an iodine atom; and a peroxide-vulcanizable fluoroelastomer (B) containing an iodine atom. The fluoroelastomer (A) is a copolymer (a1) consisting of 50 to 85 mol % of a vinylidene fluoride unit and 15 to 50 mol % of a perfluoro(alkyl vinyl ether) unit, or a copolymer (a2) consisting of 45 to 85 mol % of a vinylidene fluoride unit, 1 to 30 mol % of a tetrafluoroethylene unit, and 14 to 30 mol % of a perfluoro(alkyl vinyl ether) unit. Further the fluoroelastomer (B) has a fluorine content of 70.0% or more. Also disclosed is a composition for peroxide vulcanization containing the above fluoroelastomer composition (i), a polyfunctional unsaturated compound (ii) and a peroxide (iii), as well as a method for producing the fluoroelastomer mixture.Type: GrantFiled: March 30, 2010Date of Patent: May 28, 2013Assignee: Daikin Industries, Ltd.Inventors: Shoji Fukuoka, Keiko Washino, Shuumi Nishii, Daisuke Ota, Mitsuru Kishine
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Patent number: 8198480Abstract: This invention provides a novel compound which can be properly used as a surfactant, a method of producing a fluoropolymer, surfactant and a fluoropolymer aqueous dispersions using the novel compound. This invention is a fluoroalkylcarboxylic acid derivative which is represented by the general formula (i): Rf1(OCH2CF2CF2)n1OCX1X2CF2(Rf2)n2COOM??(i) wherein Rf1 represents a straight or branched fluoroalkyl group containing 1 to 20 carbon atoms, which fluoroalkyl group may optionally contain 1 to 5 oxygen atoms in the principal chain thereof, Rf2 represents a straight or branched fluoroalkylene group containing 1 to 25 carbon atoms, said fluoroalkylene group may optionally contain 1 to 5 oxygen atoms in the principal chain thereof, n1 represents an integer of 0 to 3, n2 represents an integer of 0 or 1, X1 and X2 are the same or different and each represents hydrogen atom or fluorine atom, and M represents NH4 or a monovalent metal element.Type: GrantFiled: August 6, 2009Date of Patent: June 12, 2012Assignee: Daikin Industries, Ltd.Inventors: Shigeru Morita, Yoshiki Tanaka, Keiko Washino, Nobuhiko Tsuda, Mitsuru Kishine
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Patent number: 8138271Abstract: The present invention provides a crosslinkable composition being capable of providing a molded article and a sealing material for an oxygen sensor which have excellent long-term heat resistance and satisfactory compression set. Also there is provided a molded article and a sealing material for an oxygen sensor which have excellent long-term heat resistance and satisfactory compression set. The crosslinkable composition comprises (A) a compound having at least one specific crosslinkable reaction group and (B) a nonperfluoro fluorine-containing elastomer being crosslinkable with the compound (A).Type: GrantFiled: July 11, 2011Date of Patent: March 20, 2012Assignee: Daikin Industries, Ltd.Inventors: Keiko Washino, Meiten Koh, Yasuko Takagahara
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Publication number: 20120029152Abstract: A fluoroelastomer mixture, including: a peroxide-vulcanizable fluoroelastomer (A) containing an iodine atom; and a peroxide-vulcanizable fluoroelastomer (B) containing an iodine atom. The fluoroelastomer (A) is a copolymer (a1) consisting of 50 to 85 mol % of a vinylidene fluoride unit and 15 to 50 mol % of a perfluoro(alkyl vinyl ether) unit, or a copolymer (a2) consisting of 45 to 85 mol % of a vinylidene fluoride unit, 1 to 30 mol % of a tetrafluoroethylene unit, and 14 to 30 mol % of a perfluoro(alkyl vinyl ether) unit. Further the fluoroelastomer (B) has a fluorine content of 70.0% or more. Also disclosed is a composition for peroxide vulcanization containing the above fluoroelastomer composition (i), a polyfunctional unsaturated compound (ii) and a peroxide (iii), as well as a method for producing the fluoroelastomer mixture.Type: ApplicationFiled: March 30, 2010Publication date: February 2, 2012Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Shoji Fukuoka, Keiko Washino, Shuumi Nishii, Daisuke Ota, Mitsuru Kishine
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Publication number: 20110263795Abstract: The present invention provides a crosslinkable composition being capable of providing a molded article and a sealing material for an oxygen sensor which have excellent long-term heat resistance and satisfactory compression set. Also there is provided a molded article and a sealing material for an oxygen sensor which have excellent long-term heat resistance and satisfactory compression set. The crosslinkable composition comprises (A) a compound having at least one specific crosslinkable reaction group and (B) a nonperfluoro fluorine-containing elastomer being crosslinkable with the compound (A).Type: ApplicationFiled: July 11, 2011Publication date: October 27, 2011Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Keiko WASHINO, Meiten KOH, Yasuko TAKAGAHARA
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Publication number: 20110151164Abstract: A curable composition comprising (A) a vinylidene fluoride elastomer which is a copolymer of vinylidene fluoride (a1), at least one kind of perfluoroolefin (a2) selected from the group consisting of tetrafluoroethylene, hexafluoropropylene and perfluoro(alkyl vinyl ether) and a cyano group-containing monomer (a3) (a proportion of the vinylidene fluoride exceeds 20% by mole), (B) a specific curing agent and (C) a compound generating ammonia at 40° to 330° C. The present invention can provide a curable composition of a vinylidene fluoride elastomer assuring improved crosslinking speed, and a molded article obtained from the curable composition. Physical properties under normal conditions are improved by the presence of a solvent having affinity for the compound generating ammonia.Type: ApplicationFiled: September 18, 2009Publication date: June 23, 2011Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Keiko Washino, Shoji Fukuoka, Daisuke Ota, Mitsuru Kishine
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Publication number: 20110112265Abstract: A curable composition comprising (A) a vinylidene fluoride type elastomer which is a copolymer of vinylidene fluoride (a1), at least one perfluoroolefin (a2) selected from the group consisting of tetrafluoroethylene, hexafluoropropylene and perfluoro(alkyl vinyl ether) and a cyano group-containing monomer (a3) (the proportion of vinylidene fluoride exceeds 20% by mole), and (B) a compound generating ammonia at 40° to 330° C. alone as a curing agent. The present invention can provide a curable composition of a vinylidene fluoride type elastomer assuring improved crosslinking speed and making it possible to use a cheap curing agent, and a molded article obtained from the curable composition. Physical properties under normal conditions can also be improved by the presence of the solvent having affinity for the compound generating ammonia.Type: ApplicationFiled: June 29, 2009Publication date: May 12, 2011Applicant: DAIKIN INDUSTRIES LTD.Inventors: Keiko Washino, Shoji Fukuoka, Daisuke Ota, Mitsuru Kishine
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Publication number: 20110021716Abstract: The present invention provides a TFE/Pr type elastomer being excellent in not only amine resistance but also heat resistance and chemical resistance and having a small gel content, and a crosslinkable composition comprising the elastomer. The above-mentioned fluorine-containing elastomer is a fluorine-containing elastomer being crosslinkable with the compound (A), comprising 40 to 70% by mole of tetrafluoroethylene unit, 30 to 60% by mole of propylene unit and 0.1 to 2.5% by mole of a carboxyl group-containing vinyl monomer unit and having a Mooney viscosity at 121° C. of 5 to 100.Type: ApplicationFiled: March 19, 2009Publication date: January 27, 2011Inventors: Keiko Washino, Shigeru Morita, Takashi Yoshimura, Mitsuru Kishine
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Patent number: 7659347Abstract: The present invention provides a fluorine-containing elastomer composition excellent in heat resistance, comprising a fluorine-containing elastomer containing a vinylidene fluoride unit, which is capable of a crosslinking reaction, and a crosslinking agent. The present invention also provides a molded article, a sealing material, and a sealing material for an oxygen sensor excellent in heat resistance, which comprises the composition. The present invention is a fluorine-containing elastomer composition comprising (A) at least one compound selected form the group consisting of a compound containing at least two crosslinking reaction group s represented by the general formula (1), a compound represented by the general formula (2), a compound represented by the general formula (3) and a compound represented by the general formula (4); and (B) a fluorine-containing elastomer capable of a crosslinking reaction with the compound (A), comprising a vinylidene fluoride unit.Type: GrantFiled: April 22, 2005Date of Patent: February 9, 2010Assignee: Daikin Industries, Ltd.Inventors: Keiko Washino, Kazuyoshi Kawasaki, Mitsuru Kishine
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Publication number: 20090298984Abstract: This invention provides a novel compound which can be properly used as a surfactant, a method of producing a fluoropolymer, surfactant and a fluoropolymer aqueous dispersions using the novel compound. This invention is a fluoroalkylcarboxylic acid derivative which is represented by the general formula (i): Rf1(OCH2CF2CF2)n1OCX1X2CF2(Rf2)n2COOM??(i) wherein Rf1 represents a straight or branched fluoroalkyl group containing 1 to 20 carbon atoms, which fluoroalkyl group may optionally contain 1 to 5 oxygen atoms in the principal chain thereof, Rf2 represents a straight or branched fluoroalkylene group containing 1 to 25 carbon atoms, said fluoroalkylene group may optionally contain 1 to 5 oxygen atoms in the principal chain thereof, n1 represents an integer of 0 to 3, n2 represents an integer of 0 or 1, X1 and X2 are the same or different and each represents hydrogen atom or fluorine atom, and M represents NH4 or a monovalent metal element.Type: ApplicationFiled: August 6, 2009Publication date: December 3, 2009Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Shigeru MORITA, Yoshiki TANAKA, Keiko WASHINO, Nobuhiko TSUDA, Mitsuru KISHINE
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Patent number: 7589234Abstract: This invention provides a novel compound which can be properly used as a surfactant, a method of producing a fluoropolymer, surfactant and a fluoropolymer aqueous dispersions using the novel compound. This invention is a fluoroalkylcarboxylic acid derivative which is represented by the general formula (i): Rf1(OCH2CF2CF2)n1OCX1X2CF2(Rf2)n2COOM??(i) wherein Rf1 represents a straight or branched fluoroalkyl group containing 1 to 20 carbon atoms, which fluoroalkyl group may optionally contain 1 to 5 oxygen atoms in the principal chain thereof, Rf2 represents a straight or branched fluoroalkylene group containing 1 to 25 carbon atoms, said fluoroalkylene group may optionally contain 1 to 5 oxygen atoms in the principal chain thereof, n1 represents an integer of 0 to 3, n2 represents an integer of 0 or 1, X1 and X2 are the same or different and each represents hydrogen atom or fluorine atom, and M represents NH4 or a monovalent metal element.Type: GrantFiled: July 2, 2004Date of Patent: September 15, 2009Assignee: Daikin Industries, Ltd.Inventors: Shigeru Morita, Yoshiki Tanaka, Keiko Washino, Nobuhiko Tsuda, Mitsuru Kishine
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Publication number: 20090124759Abstract: The present invention provides a crosslinkable composition being capable of providing a molded article and a sealing material for an oxygen sensor which have excellent long-term heat resistance and satisfactory compression set. Also there is provided a molded article and a sealing material for an oxygen sensor which have excellent long-term heat resistance and satisfactory compression set. The crosslinkable composition comprises (A) a compound having at least one specific crosslinkable reaction group and (B) a nonperfluoro fluorine-containing elastomer being crosslinkable with the compound (A).Type: ApplicationFiled: October 13, 2006Publication date: May 14, 2009Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Keiko Washino, Meiten Koh, Yasuko Takagahara
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Patent number: 7306705Abstract: A method for dehydrating an aqueous composition comprising lithium bis(pentafluoroethanesulfonyl)imide and at least one organic solvent, wherein a part of solvent is distilled off by distillation.Type: GrantFiled: July 24, 2002Date of Patent: December 11, 2007Assignee: Daikin Industries, Ltd.Inventors: Daisuke Karube, Shintaro Ogata, Keiko Washino, Tatsuya Otsuka
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Publication number: 20070219332Abstract: The present invention provides a fluorine-containing elastomer composition excellent in heat resistance, comprising a fluorine-containing elastomer containing a vinylidene fluoride unit, which is capable of a crosslinking reaction, and a crosslinking agent. The present invention also provides a molded article, a sealing material, and a sealing material for an oxygen sensor excellent in heat resistance, which comprises the composition. The present invention is a fluorine-containing elastomer composition comprising (A) at least one compound selected form the group consisting of a compound containing at least two crosslinking reaction group s represented by the general formula (1), a compound represented by the general formula (2), a compound represented by the general formula (3) and a compound represented by the general formula (4); and (B) a fluorine-containing elastomer capable of a crosslinking reaction with the compound (A), comprising a vinylidene fluoride unit.Type: ApplicationFiled: April 22, 2005Publication date: September 20, 2007Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Keiko Washino, Kazuyoshi Kawasaki, Mitsuru Kishine
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Publication number: 20060281946Abstract: This invention provides a novel compound which can be properly used as a surfactant, a method of producing a fluoropolymer, surfactant and a fluoropolymer aqueous dispersions using the novel compound. This invention is a fluoroalkylcarboxylic acid derivative which is represented by the general formula (i): Rf1(OCH2CF2CF2)n1OCX1X2CF2(Rf2)n2COOM ??(i) wherein Rf1 represents a straight or branched fluoroalkyl group containing 1 to 20 carbon atoms, which fluoroalkyl group may optionally contain 1 to 5 oxygen atoms in the principal chain thereof, Rf2 represents a straight or branched fluoroalkylene group containing 1 to 25 carbon atoms, said fluoroalkylene group may optionally contain 1 to 5 oxygen atoms in the principal chain thereof, n1 represents an integer of 0 to 3, n2 represents an integer of 0 or 1, X1 and X2 are the same or different and each represents hydrogen atom or fluorine atom, and M represents NH4 or a monovalent metal element.Type: ApplicationFiled: July 2, 2004Publication date: December 14, 2006Inventors: Shigeru Morita, Yoshiki Tanaka, Keiko Washino, Nobuhiko Tsuda, Mitsuru Kishine
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Publication number: 20030022069Abstract: The present invention relates to a method for dehydrating an aqueous composition comprising lithium bis(pentafluoroethanesulfonyl)imide and at least one organic solvent, wherein said dehydration method of the composition comprising lithium bis(pentafluoroethanesulfonyl)imide is characterized in that a part of solvent is distilled off by distillation.Type: ApplicationFiled: July 24, 2002Publication date: January 30, 2003Applicant: Daikin Industries, Ltd.Inventors: Daisuke Karube, Shintaro Ogata, Keiko Washino, Tatsuya Otsuka