Patents by Inventor Seiji Munekata
Seiji Munekata 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: 4943614Abstract: A coating composition comprising a fluorine-containing copolymer obtained by copolymerizing a fluoroolefin, an N-vinyl-lactam, a monomer having a cross-linkable functional group and other monomers copolymerizable therewith in a proportion of from 30 to 70 mol%, from 5 to 68 mol%, from 2 to 40 mol% and from 0 to 63 mol%, respectively.Type: GrantFiled: October 20, 1988Date of Patent: July 24, 1990Assignee: Asahi Glass Company Ltd.Inventors: Nobuyuki Miyazaki, Masao Unoki, Seiji Munekata
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Patent number: 4931505Abstract: A coating composition comprising:(A) a fluorine-containing copolymer having a fluorine content based on fluoroolefin of at least 10% by weight, and(B) a fluorine-containing copolymer of a polyfluorocarbon chain-containing monomer with a hydrophilic group-containing monomer.Type: GrantFiled: October 4, 1988Date of Patent: June 5, 1990Assignee: Asahi Glass Company Ltd.Inventors: Nobuyuki Miyazaki, Masao Unoki, Seiji Munekata
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Patent number: 4861667Abstract: A coating composition comprising a fluorine-containing copolymer containing at least 10% by weight of fluorine based on fluoroolefin units, being soluble in a solvent and having curable reactive sites, and a polyfunctional organic silicon compound having at least one isocyanate group directly bonded to a silicon atom.Type: GrantFiled: December 15, 1987Date of Patent: August 29, 1989Assignee: Asahi Glass Company, Ltd.Inventors: Takashi Takayanagi, Seiji Munekata, Nobuyuki Miyazaki, Ken Moriwaki
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Patent number: 4804246Abstract: A plastic-clad light-transmitting fiber consisting essentially of a core of quartz glass or optical glass and a clad of plastic material, characterized in that said clad of plastic material is a cured body of a solvent-soluble fluoroolefin polymer having curable sites.Type: GrantFiled: March 31, 1987Date of Patent: February 14, 1989Assignee: Asahi Glass Company Ltd.Inventors: Shigeyoshi Kobayashi, Seiji Munekata, Masao Unoki, Toshio Iwamoto
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Patent number: 4711926Abstract: A composition for electrodeposition paint, comprising (a) a water-dispersible and electrophoretic fluoropolymer obtained by neutralizing with a basic compound at least a part of carboxyl groups of a carboxyl and hydroxyl group-containing fluoropolymer having an acid value of from 5 to 30 and a OH value of from 30 to 150 and (b) an aminoplast, which are dispersed in an aqueous medium in a weight ratio of component (a)/component (b) of from 50/50 to 97/3.Type: GrantFiled: September 5, 1986Date of Patent: December 8, 1987Assignees: Honny Chemicals Company Ltd., Asahi Glass Company Ltd.Inventors: Masaki Kojima, Seiji Munekata
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Patent number: 4495364Abstract: A fluorinated acid fluoride having an ester group which has the formula ##STR1## wherein A,p, q and R are defined below is produced by reacting a diacid fluoride having the formula ##STR2## wherein A represents a C.sub.1 -C.sub.10 bifunctional perfluoro group; p represents 0 or 1; q represents an integer of 1 to 8 with an alcohol having the formula ROH wherein R represents an organic group.Type: GrantFiled: February 14, 1980Date of Patent: January 22, 1985Assignee: Asahi Glass Company Ltd.Inventors: Masaaki Yamabe, Seiji Munekata
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Patent number: 4379768Abstract: Perfluorosuccinyl fluoride is produced by coupling accompanied by dehalogenation of a difluorohaloacetyl fluoride having the formulaXCF.sub.2 COFwherein X represents I, Br or Cl by reacting with a trapping agent of a halogen at a temperature ranging from 100.degree. to 500.degree. C.Type: GrantFiled: August 26, 1981Date of Patent: April 12, 1983Assignee: Asahi Glass Company, Ltd.Inventors: Masaaki Yamabe, Seiji Munekata, Seisaku Kumai, Isamu Kaneko
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Patent number: 4362672Abstract: A difluorohaloacetyl fluoride is produced by (a) producing an intermediate having a group of the formulaXCF.sub.2 CFYOSO.sub.2.sup.-wherein X is I or Br, Y is F, Cl, Br or I; by reacting a polyfluoroethylene of the formulaCF.sub.2 .dbd.CFYwith a reagent obtained by mixing sulfur trioxide with a halogen selected from iodine and bromine; and (b) decomposing said intermediate into said product.Type: GrantFiled: July 27, 1981Date of Patent: December 7, 1982Assignee: Asahi Glass Company, Ltd.Inventors: Masaaki Yamabe, Seiji Munekata, Shunichi Samejima
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Patent number: 4340750Abstract: A fluorovinyl ether having the formulaXRfCF.sub.2 OCF.dbd.CF.sub.2 (I)wherein X represents --H, --Cl, --Br, --F, --CO.sub.2 R, --CONRR', --SO.sub.2 F, ##STR1## or --COF and R represents a C.sub.1 -C.sub.10 alkyl group; R' represents --H or a C.sub.1 -C.sub.10 alkyl group; Rf represents a C.sub.1 -C.sub.20 bifunctional perfluoro-containing group is produced by reacting an iodine-containing ether having the formulaXRfCF.sub.2 OCF.sub.2 CF.sub.2 I (II)in the presence of a catalytic component selected from the group consisting of Mg, Cu, Zn, Zn-Cu, Zn-Cd, Zn-Pd, Zn-Hg, Sn, Sb, organomagnesium compounds and organolithium compounds.Type: GrantFiled: October 29, 1980Date of Patent: July 20, 1982Assignee: Asahi Glass Company, Ltd.Inventors: Masaaki Yamabe, Seisaku Kumai, Seiji Munekata
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Patent number: 4318867Abstract: A process for producing difluoroiodoacetyl fluoride comprises a step of producing an intermediate having a group of ICF.sub.2 CF.sub.2 OSO.sub.2 -- by reacting 1,2-diiodotetrafluoroethane with an oxidizing acid having S(VI) atom and a step of decomposing said intermediate into said product.Type: GrantFiled: May 19, 1980Date of Patent: March 9, 1982Assignee: Asahi Glass Company, Ltd.Inventors: Masaaki Yamabe, Seiji Munekata, Seisaku Kumai
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Patent number: 4275226Abstract: A fluorovinyl ether having the formulaXRfCF.sub.2 OCF.dbd.CF.sub.2 (I)wherein X represents --H, --Cl, --Br, --F, --CO.sub.2 R, --CONRR', --SO.sub.2 F, ##STR1## or --COF and R represents a C.sub.1 -C.sub.10 alkyl group; R' represents --H or a C.sub.1 -C.sub.10 alkyl group; Rf represents a C.sub.1 -C.sub.20 bifunctional perfluoro-containing group is produced by reacting an iodine-containing ether having the formulaXRfCF.sub.2 OCF.sub.2 CF.sub.2 I (II)in the presence of a catalytic component selected from the group consisting of Mg, Cu, Zn, Zn-Cu, Zn-Cd, Zn-Pd, Zn-Hg, Sn, Sb, organomagnesium compounds and organolithium compounds.Type: GrantFiled: August 9, 1979Date of Patent: June 23, 1981Assignee: Asahi Glass Company, Ltd.Inventors: Masaaki Yamabe, Seisaku Kumai, Seiji Munekata
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Patent number: 4209635Abstract: A perfluorinated vinyl ether having an ester group which has the formulaCF.sub.2 .dbd.CFOCF.sub.2 (A).sub.p (CF.sub.2).sub.q CO.sub.2 Rwherein A represents a c.sub.1 -C.sub.10 divalent perfluorinated radical; p represents 0 or 1; q represents 0 or 1 to 3; and R represents an organic radical, is produced by pyrolyzing (thermally decomposing) an asymmetric diacyl halide having the formula ##STR1## wherein X represents --F, --Cl or --Br and then, reacting the resulting perfluorinated vinyl ether having a halocarbonyl group which has the formulaCF.sub.2 .dbd.CFOCF.sub.2 (A).sub.p (CF.sub.Type: GrantFiled: March 2, 1979Date of Patent: June 24, 1980Assignee: Asahi Glass Company LimitedInventors: Seiji Munekata, Hiroshi Ukihashi, Masaaki Yamabe, Isamu Kaneko
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Patent number: 4153804Abstract: A fluorinated vinyl ether having an ester group which has the formulaCF.sub.2 .dbd. CFOCF.sub.2 (CF(CF.sub.3)OCF.sub.2).sub.n-1 (Rf).sub.m CO.sub.2 Rwherein n represents an integer of 1 to 5; m represents 0 or 1; Rf represents a C.sub.1 -C.sub.10 bifunctional perfluoro group and R represents an alkyl group, is produced by reacting fluorinated acyl fluoride having an ester group which has the formulaFOC(CF(CF.sub.3)OCF.sub.2).sub.n (Rf).sub.m CO.sub.2 Rwith an alkali metal carbonate to produce an alkali metal salt of fluorinated carboxylic acid having an ester group which has the formulaMOOC(CF(CF.sub.3)OCF.sub.2).sub.n (Rf).sub.m CO.sub.2 Rwherein M represnts an alkali metal;And then, thermally decomposing the alkali metal salt of fluorinated carboxylic acid having an ester group.Type: GrantFiled: June 21, 1978Date of Patent: May 8, 1979Assignee: Asahi Glass Co. Ltd.Inventors: Masaaki Yamabe, Seiji Munekata, Shunichi Samejima
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Patent number: 4127731Abstract: A fluorinated acyl fluoride having an ester group which has the formulaFOC(CF.sub.2).sub.n-1 CO.sub.2 Rwherein n is 2 to 4 and R represents an alcohol residual group is produced by reacting a perfluorolactone having the formula ##STR1## wherein n represents an integer of 2 to 4, with an alcohol having the formulaROHwherein R represents an alcohol residual group.Type: GrantFiled: November 8, 1976Date of Patent: November 28, 1978Assignee: Asahi Glass Company Ltd.Inventors: Masaaki Yamabe, Seiji Munekata, Yoshio Sugaya, Yukio Jitsugiri
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Patent number: 4089869Abstract: A perfluorolactone having the formula ##STR1## wherein n is an integer of 2 to 4, is produced by reacting a fluoro compound having the formulaI(CF.sub.2).sub.n COXwherein n is an integer of 2 to 4 and X represents a halogen atom, --OR or --NR.sup.1 R.sup.2, and R, R.sup.1 and R.sup.2 respectively represent hydrogen atom or a C.sub.1 - C.sub.10 alkyl group, with fuming sulfuric acid.Type: GrantFiled: September 10, 1976Date of Patent: May 16, 1978Assignee: Asahi Glass Company Ltd.Inventors: Masaaki Yamabe, Seiji Munekata, Seisaku Kumai, Shunichi Samejima