Patents by Inventor Takuya Arase

Takuya Arase 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).

  • Patent number: 9109053
    Abstract: A method for producing a fluoropolymer dispersion where a fine particle containing a fluoropolymer is dispersed in an aqueous dispersion medium, the fluoropolymer having a sulfonic acid group, and the method including a polymerization reaction step of emulsion polymerizing a fluorovinyl ether derivative and a fluorine-containing ethylenic monomer to give a fluoropolymer precursor, a hydrolysis step of hydrolyzing, in an aqueous medium, —SO2X1, where X1 represents a halogen atom, which the fluoropolymer precursor has thereby to give the fluoropolymer, the fluorovinyl ether derivative being represented by the following general formula (II): CF2?CF—O—(CF2CFY1—O)n—(CFY2)m-A1??(II) wherein Y1, n, Y1, m and A1 are as defined herein, the fluoropolymer precursor having a fluorovinyl ether derivative unit content of 5 to 40 mole percent, and the fluoropolymer dispersion being produced without drying the fluoropolymer precursor and the fluoropolymer.
    Type: Grant
    Filed: March 18, 2013
    Date of Patent: August 18, 2015
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Masayoshi Tatemoto, Takuya Arase, Tadashi Ino
  • Patent number: 8545732
    Abstract: An electrode film for a polymer actuator element contains a fluororesin, a fluorine rubber, an ionic liquid, and a conductive filler.
    Type: Grant
    Filed: March 19, 2010
    Date of Patent: October 1, 2013
    Assignees: Daikin Industries, Ltd., National Institute of Advanced Industrial Science And Technology
    Inventors: Hideto Nakagawa, Takuya Arase, Kinji Asaka
  • Publication number: 20120018680
    Abstract: An electrode film for a polymer actuator element contains a fluororesin, a fluorine rubber, an ionic liquid, and a conductive filler.
    Type: Application
    Filed: March 19, 2010
    Publication date: January 26, 2012
    Applicants: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHONOLGY, DAIKIN INDUSTRIES, LTD.
    Inventors: Hideto Nakagawa, Takuya Arase, Kinji Asaka
  • Publication number: 20110288221
    Abstract: The invention provides a polymer processing additive which, when added to a melt-processable resin, is highly effective in improving the moldability of the resin, and a molding composition containing the polymer processing additive, among others. This invention is related to a polymer processing additive comprising a fluoroelastomer subjected to heat treatment with an alkali metal inorganic salt or alkaline earth metal inorganic salt added thereto.
    Type: Application
    Filed: August 4, 2011
    Publication date: November 24, 2011
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Tsuyoshi MIYAMORI, Yoshichika KOMIYA, Takuya ARASE
  • Patent number: 7847001
    Abstract: A fluoropolymer liquid composition including a fluoropolymer liquid (A) which includes a liquid medium and a crosslinkable functional group-containing crosslinkable fluoropolymer. The fluoropolymer liquid (A) is a fluoropolymer liquid dispersion (AD) having, dispersed in a liquid dispersion medium, particles of a crosslinkable fluoropolymer (PD) containing acid/acid salt groups or organic groups capable of undergoing hydrolysis and thus being converted to carboxyl groups, or a fluoropolymer solution (AS) having, dissolved in a fluorosolvent or an alcohol/water mixed solvent, a crosslinkable fluoropolymer (PS) containing acid/acid salt groups or acid/acid salt groups precursors. Further, the crosslinkable functional group is a cyano group, —I or —Br.
    Type: Grant
    Filed: December 2, 2009
    Date of Patent: December 7, 2010
    Assignee: Daikin Industries, Ltd.
    Inventors: Takuya Arase, Masayoshi Tatemoto
  • Publication number: 20100080931
    Abstract: A fluoropolymer liquid composition including a fluoropolymer liquid (A) which includes a liquid medium and a crosslinkable functional group-containing crosslinkable fluoropolymer. The fluoropolymer liquid (A) is a fluoropolymer liquid dispersion (AD) having, dispersed in a liquid dispersion medium, particles of a crosslinkable fluoropolymer (PD) containing acid/acid salt groups or organic groups capable of undergoing hydrolysis and thus being converted to carboxyl groups, or a fluoropolymer solution (AS) having, dissolved in a fluorosolvent or an alcohol/water mixed solvent, a crosslinkable fluoropolymer (PS) containing acid/acid salt groups or acid/acid salt groups precursors. Further, the crosslinkable functional group is a cyano group, —I or —Br.
    Type: Application
    Filed: December 2, 2009
    Publication date: April 1, 2010
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Takuya ARASE, Masayoshi TATEMOTO
  • Publication number: 20090082510
    Abstract: The invention provides a polymer processing additive which, when added to a melt-processable resin, is highly effective in improving the moldability of the resin, and a molding composition containing the polymer processing additive, among others. This invention is related to a polymer processing additive comprising a fluoroelastomer subjected to heat treatment with an alkali metal inorganic salt or alkaline earth metal inorganic salt added thereto.
    Type: Application
    Filed: April 17, 2007
    Publication date: March 26, 2009
    Applicant: Daikin Industries Ltd.
    Inventors: Tsuyoshi Miyamori, Yoshichika Komiya, Takuya Arase
  • Patent number: 7482415
    Abstract: The present invention provides a process for producing a fluorinated ionomer, comprising copolymerizing, in the presence of a polymerization initiator, (i) a compound represented by Formula (I) (M)1/LOSO2CFY(CF2)mO(CFXCF2O)nCF?CF2??(I) wherein M is H or a metal with a valence of L (L is 1, 2 or 3), X is F, Cl or CF3, Y is halogen, m is 1 to 5, and n is 0 to 5, (ii) tetrafluoroethylene and (iii) at least one third monomer selected from the group consisting of hexafluoropropylene, chlorotrifluoroethylene, vinylidene fluoride, CF2?CFORf (Rf is C1 to C5 perfluoroalkyl) and ethylene. The present invention further provides a method for purifying and concentrating a fluorinated ionomer, comprising ultrafiltration or dialysis of a fluorinated ionomer solution or dispersion, and a method for forming a film of the fluorinated ionomer.
    Type: Grant
    Filed: February 16, 2001
    Date of Patent: January 27, 2009
    Assignee: Daikin Industries, Ltd.
    Inventors: Masayoshi Tatemoto, Tadashi Ino, Kenji Ishii, Takuji Ishikawa, Takuya Arase
  • Patent number: 7348386
    Abstract: The present invention relates to a method for producing a fluorocopolymer which comprises a polymerization reaction of a fluorine-containing ethylenic monomer with a fluorovinyl ether derivative represented by the following general formula (I): CF2?CF—O—[CF2CF(CF3)O]n—(CF2)m-A??(I) (wherein n represents an integer of 0 to 3, m represents an integer of 1 to 5, and A represents —SO2X or —COOY; X represents a halogen atom or —NR1R2; R1 and R2 are the same or different and each represents a hydrogen atom, an alkali metal, an alkyl group or a sulfonyl-containing group and Y represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms) to give a fluorocopolymer, said fluorine-containing ethylenic monomer being a perhaloethylenic monomer represented by the following general formula (II): CF2?CF—Rf1??(II) (wherein Rf1 represents a fluorine atom, a chlorine atom, Rf2 or ORf2; Rf2 represents a straight or branched perfluoroalkyl group having 1 to 9 carbon atoms, which may have an ether oxygen atom(s)) a
    Type: Grant
    Filed: June 16, 2003
    Date of Patent: March 25, 2008
    Assignee: Daikin Industries, Ltd.
    Inventors: Takuya Arase, Masahiro Kondou, Kenji Ishii, Tadaharu Isaka
  • Patent number: 7321071
    Abstract: The present invention relates to a method for producing a water-soluble fluorine-containing vinyl ether which comprises subjecting a fluorine-containing 2-alkoxypropionic acid derivative represented by the following general formula (I): (wherein A represents —OM1 or —OM21/2, and M1 represents an alkali metal and M2 represents an alkaline earth metal; X represents a halogen atom; Y1 and Y2 are the same or different and each represents a fluorine atom, a chlorine atom, a perfluoroalkyl group or a fluorochloroalkyl group; n represents an integer of 0 to 3, and n of Y1s may be the same or different; m represents an integer of 1 to 5, and m of Y2s are the same or different; and Z represents a hydrophilic group) to thermal decomposition at a temperature of not lower than 50° C. but lower than 170° C.
    Type: Grant
    Filed: June 16, 2003
    Date of Patent: January 22, 2008
    Assignee: Daikin Industries, Ltd.
    Inventors: Kenji Ishii, Noriyuki Shinoki, Takuya Arase, Kazuyoshi Ichihara, Toshiya Mantani
  • Publication number: 20070141425
    Abstract: It is an object of the present invention to provide a liquid composition which comprises an acid/acid salt group-containing polymer and from which cured articles excellent in mechanical characteristics and undergoing only slight dimensional changes depending on the moisture content can be produced by application thereof to a substrate or impregnation of a porous material therewith.
    Type: Application
    Filed: December 1, 2004
    Publication date: June 21, 2007
    Inventors: Takuya Arase, Masayoshi Tatemoto
  • Patent number: 7223800
    Abstract: A method for producing a regenerated fluororesin, characterized in that it comprises subjecting a used melt-molded fluororesin article to a heat treatment at a temperature of from room temperature to the melting point of the resin; a method for producing a regenerated fluororesin, characterized in that it comprises subjecting a used melt-molded fluororesin article to a supercritical washing treatment at a temperature of from room temperature to the melting point of the resin; and a regenerated fluororesin article containing substantially no impurities which is obtainable by the above method.
    Type: Grant
    Filed: July 19, 2001
    Date of Patent: May 29, 2007
    Assignee: Daikin Industries, Ltd.
    Inventors: Masaji Komori, Takuya Arase
  • Publication number: 20060194703
    Abstract: The invention provides a fluoropolymer liquid composition comprising a fluoropolymer and a film-forming auxiliary, said fluoropolymer comprising acid/acid salt fluorovinyl ether units represented by the general formula (I): said film-forming auxiliary being an organic liquid which is compatible with water and has a boiling point higher than 100° C. but not higher than 300° C., said fluoropolymer liquid composition being a fluoropolymer dispersion composition comprising said film-forming auxiliary and a fluoropolymer fine particle comprising said fluoropolymer, said fluoropolymer fine particle containing, at the proportion of at least 25% by mass thereof, a spherical fluoropolymer fine particle, and said spherical fluoropolymer fine particle being substantially spherical.
    Type: Application
    Filed: March 3, 2004
    Publication date: August 31, 2006
    Inventors: Masayoshi Tatemoto, Tadashi Ino, Takuya Arase, Atsushi Sakakura
  • Publication number: 20050245707
    Abstract: The present invention relates to a method for producing a fluorocopolymer which comprises a polymerization reaction of a fluorine-containing ethylenic monomer with a fluorovinyl ether derivative represented by the following general formula (I): CF2?CF—O—[CF2CF(CF3)O]n—(CF2)m-A??(I) (wherein n represents an integer of 0 to 3, m represents an integer of 1 to 5, and A represents —SO2X or —COOY; X represents a halogen atom or —NR1R2; R1 and R2 are the same or different and each represents a hydrogen atom, an alkali metal, an alkyl group or a sulfonyl-containing group and Y represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms) to give a fluorocopolymer, said fluorine-containing ethylenic monomer being a perhaloethylenic monomer represented by the following general formula (II): CF2?CF—Rf1??(II) (wherein Rf1 represents a fluorine atom, a chlorine atom, Rf2 or ORf2; Rf2 represents a straight or branched perfluoroalkyl group having 1 to 9 carbon atoms, which may have an ether oxygen atom(s)) an
    Type: Application
    Filed: June 16, 2003
    Publication date: November 3, 2005
    Inventors: Takuya Arase, Masahiro Kondou, Kenji Ishii, Tadaharu Isaka
  • Publication number: 20050245758
    Abstract: The present invention relates to a method for producing a water-soluble fluorine-containing vinyl ether which comprises subjecting a fluorine-containing 2-alkoxypropionic acid derivative represented by the following general formula (I): (wherein A represents —OM1 or —OM21/2, and M1 represents an alkali metal and M2 represents an alkaline earth metal; X represents a halogen atom; Y1 and Y2 are the same or different and each represents a fluorine atom, a chlorine atom, a perfluoroalkyl group or a fluorochloroalkyl group; n represents an integer of 0 to 3, and n of Y1s may be the same or different; m represents an integer of 1 to 5, and m of Y2s are the same or different; and Z represents a hydrophilic group) to thermal decomposition at a temperature of not lower than 50° C. but lower than 170° C.
    Type: Application
    Filed: June 16, 2003
    Publication date: November 3, 2005
    Applicant: Saikin Industries, LTD. Umeda Center Building
    Inventors: Kenji Ishii, Noriyuki Shinoki, Takuya Arase, Kazuyoshi Ichihara, Toshiya Mantani
  • Publication number: 20050228127
    Abstract: A fluoropolymer solid composition which contains a fine particle comprising a fluoropolymer, said fluoropolymer having an acid/acid salt group, said acid/acid salt group being a sulfonic acid group, —SO2NR17R18, a carboxyl group, —SO3NR1R2R3R4, —SO3M11/L, —COONR5R6R7R8 or —COOM21/L (in which R17 and R18 are the same or different and each represents a hydrogen atom, an alkali metal, an alkyl group or a sulfonyl-containing group, R1, R2, R3 and R4 are the same or different and each represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, R5, R6, R7 and R8 are the same or different and each represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, M1 and M2 are the same or different and each represents a metal whose valence is L, and said metal whose valence is L is a metal belonging to the group 1, 2, 4, 8, 11, 12 or 13 of the periodic table); said fine particle comprising the fluoropolymer containing, at the proportion of at least 25% by mass thereof, a spherical fluoropolymer
    Type: Application
    Filed: June 16, 2003
    Publication date: October 13, 2005
    Inventors: Masayoshi Tatemoto, Takuya Arase, Tadashi Ino
  • Patent number: 6893729
    Abstract: The present invention is to provide a laminated resin molding comprising a polyamide-based resin composition as an outer layer and being excellent in interlayer adhesion strength, in particular a laminated resin molding comprising a fluorine-containing resin as an inner layer. The present invention is a laminated resin molding which comprises a layer (A) comprising a polyamide-based resin composition and a layer (B) laminated to said layer (A), said layer (B) comprising a fluorine-containing ethylenic polymer having a carbonyl group, and said polyamide-based resin composition having a functional group, in addition to an amide group, selected from the group consisting of hydroxyl group, carboxyl group, ester group and sulfonamide group in a total amount of 0.05 to 80 equivalent percent relative to the amide group.
    Type: Grant
    Filed: February 19, 2001
    Date of Patent: May 17, 2005
    Assignee: Daikin Industries, Ltd.
    Inventors: Takeshi Inaba, Taketo Kato, Shigehito Sagisaka, Takuya Arase, Tetsuo Shimizu
  • Patent number: 6881460
    Abstract: A multilayer molding having a polyamide-based resin as an outer layer, the multilayer molding including a fluorine-containing resin as an inner layer, as well as a resin laminate which can form the multilayer molding. The resin laminate has a layer (A) including a polyamide-based resin and a layer (B) including a fluorine-containing ethylenic polymer laminated to the layer (A), the polyamide-based resin having an amine value of 10 to 60 equivalents/106 g, and the fluorine-containing ethylenic polymer being a fluorine-containing ethylenic polymer having a carbonyl group.
    Type: Grant
    Filed: February 13, 2001
    Date of Patent: April 19, 2005
    Assignee: Daikin Industries, Ltd.
    Inventors: Takeshi Inaba, Taketo Kato, Shigehito Sagisaka, Takuya Arase, Tetsuo Shimizu
  • Patent number: 6835782
    Abstract: A polymer having a structure of the formula: in which X, Y and Z represent independently each other H, F, Cl, Br or I, provided that at least one of X, Y and Z is F; R represents a straight or branched fluorinated alkylene group which may contain an oxygen atom; x and y represent mole percentages and x is from 1 to 100% by mole; A is —CN, —NCO, —COOR′ in which R′ is H or an alkyl group having 1 to 10 carbon atoms, an acid anhydride group or an unsaturated hydrocarbon group; and M is a repeating unit derived from a copolymerizable monomer is treated with a crosslinking agent selected from ammonia, diamines and polyol compounds and crosslinked through the side functional groups of the polymer. This crosslinking method can be carried out at room temperature and provides a transparent fluoropolymer having better heat resistance than conventional transparent thermoplastic resins.
    Type: Grant
    Filed: January 14, 2002
    Date of Patent: December 28, 2004
    Assignee: Daikin Industries, Ltd.
    Inventors: Shigeru Morita, Takuya Arase, Tetsuo Shimizu
  • Patent number: 6740375
    Abstract: A fluorine-containing adhesive material comprising a fluorine-containing ethylenic polymer having a carbonate group and/or a carboxylic acid halide group at a chain end or a side chain of the polymer, wherein a total of a number of the carbonate groups and/or carboxylic acid halide groups is at less than 150 per 1×106 main chain carbon atoms, can directly impart the firm adherability to a substrate such as a metal, a glass or a resin while maintaining excellent properties such as chemical resistance, solvent resistance, weatherability and soil releasability possessed by a fluorine-containing polymer.
    Type: Grant
    Filed: May 8, 2002
    Date of Patent: May 25, 2004
    Assignee: Daikin Industries, Ltd.
    Inventors: Shigehito Sagisaka, Taketo Kato, Takeshi Inaba, Takuya Arase, Tetsuo Shimizu