Patents by Inventor Toshioki Hane

Toshioki Hane 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: 5814409
    Abstract: The present invention relates to an expanded product comprising a thermoplastic fluroine type resin which does not have a cross-linking structure and has an expansion ratio of between 4-fold and 30-fold and a closed cell percentage of 40% or more. The expanded product contains at least one interface comprising layers having different cell densities and has a distribution index (Sc) and a coefficient of variation (Cv) of the maximum diameter of an open cell present at an optional cross section of each layer of 0<Sc.ltoreq.6 and 0<Cv.ltoreq.1, respectively, which are represented by the following equations:Sc=(L.sub.Max. -L.sub.Min.)/Lav. (1)Cv=SD/L.sub.av. (2)wherein L.sub.Max., L.sub.Min. and L.sub.av. represent maximum, minimum and average values of maximum diameters of open cells, respectively; and SD represents a standard deviation.
    Type: Grant
    Filed: September 2, 1997
    Date of Patent: September 29, 1998
    Assignee: Asahi Kasei Kogyo Kabushiki Kaisha
    Inventors: Toshioki Hane, Hisao Koike
  • Patent number: 5004648
    Abstract: There is disclosed a fiber of a fluorocarbon polymer having pendant ion exchange groups, the fiber having a tensile strength at break as high as at least 1.0 g/denier. The fiber can be produced by subjecting to hydrolysis or chemical modification treatment a filament of a fluorocarbon polymer having ion exchange precursor groups in melt-fabricatable form to convert the ion exchange precursor groups to ion exchange groups in melt-nonfabricatable form and subjecting the resultant heat-infusible filament to drawing.
    Type: Grant
    Filed: August 26, 1988
    Date of Patent: April 2, 1991
    Assignee: Asahi Kasei Kogyo Kabushiki Kaisha
    Inventors: Toshioki Hane, Shigeki Katayama
  • Patent number: 4626553
    Abstract: A cation exchange membrane of a fluorocarbon polymer containing pendant carboxylic acid and/or carboxylate groups, preferably having, at a predetermined ratio, pendant carboxylic acid and/or carboxylate groups and pendant sulfonic acid and/or sulfonate groups uniformly distributed therein, is produced by contacting with a reducing agent a fluorocarbon polymer containing pendant groups of the formula:--O(CF.sub.2).sub.m SO.sub.2 Xwherein X is a fluorine atom, a chlorine atom, a hydrogen atom, M or OM in which M represents a hydrogen atom, a metal atom or an ammonium group, and m is as defined above, and transforming the resultant to a film. An excellent double-layer type composite cation exchange membrane can be produced by laminating the above-mentioned membrane having pendant carboxylic acid and/or carboxylate groups and pendant sulfonic acid and/or sulfonate groups on a membrane of a fluorocarbon polymer containing pendant sulfonic acid and/or sulfonate groups.
    Type: Grant
    Filed: April 29, 1985
    Date of Patent: December 2, 1986
    Assignee: Asahi Kasei Kogyo Kabushiki Kaisha
    Inventors: Toshioki Hane, Jukichi Ohmura
  • Patent number: 4613467
    Abstract: A novel fluorinated copolymer is prepared by copolymerization of a fluorinated olefin with a novel sulfur containing fluorinated vinylether of the formula: ##STR1## wherein k is 0 or 1 and l is an integer of 3 to 5, which is prepared from starting materials which are also novel. Said copolymer is useful for preparation of a fluorinated cation exchange membrane having carboxylic acid groups and/or sulfonic acid groups which can be used advantageously in electrolysis of an aqueous alkali metal halide solution with improved electrolysis performance.
    Type: Grant
    Filed: August 30, 1983
    Date of Patent: September 23, 1986
    Assignee: Asahi Kasei Kogyo Kabushiki Kaisha
    Inventors: Kyoji Kimoto, Hirotsugu Miyauchi, Jukichi Ohmura, Mikio Ebisawa, Toshioki Hane
  • Patent number: 4597913
    Abstract: A novel fluorinated cation exchange membrane containing carboxylic acid groups and sulfonic acid groups, both in the form of a specific pendant structure, the carboxylic acid groups being at least 20% on one surface of the membrane and gradually decreasing toward the innerside of the membrane, which membrane is useful in electrolysis of an aqueous alkali metal halide solution with advantageously stable performance for a long term under more severe operational conditions than those conventionally used. The membrane can be prepared from a novel copolymer of a fluorinated olefin with a novel sulfur containing fluorinated vinylether of the formula: ##STR1## wherein k is 0 or 1, l is an integer of 3 to 5, Z is --S-- or --SO.sub.2 -- and R is C.sub.1 -C.sub.10 alkyl, an aryl, C.sub.1 -C.sub.10 perfluoroalkyl.
    Type: Grant
    Filed: August 29, 1983
    Date of Patent: July 1, 1986
    Assignee: Asahi Kasei Kogyo Kabushiki Kaisha
    Inventors: Kyoji Kimoto, Hirotsugu Miyauchi, Jukichi Ohmura, Mikio Ebisawa, Toshioki Hane
  • Patent number: 4555369
    Abstract: A novel fluorinated cation exchange membrane containing carboxylic acid groups and sulfonic acid groups, both in the form of a specific pendant structure, the carboxylic acid groups being at least 20% on one surface of the membrane and gradually decreasing toward the innerside of the membrane, which membrane is useful in electrolysis of an aqueous alkali metal halide solution with advantageously stable performance for a long term under more severe operational conditions than those conventionally used. The membrane can be prepared from a novel copolymer of a fluorinated olefin with a novel sulfur containing fluorinated vinylether of the formula: ##STR1## wherein k is 0 or 1, l is an integer of 3 to 5, Z is --S-- or --SO.sub.2 -- and R is C.sub.1 -C.sub.10 alkyl, an aryl, Cl or C.sub.1 -C.sub.10 perfluoroalkyl. Acyl fluorides, which are the precursors of the fluorinated olefin ethers, are also disclosed.
    Type: Grant
    Filed: August 29, 1983
    Date of Patent: November 26, 1985
    Assignee: Asahi Kasei Kogyo Kabushiki Kaisha
    Inventors: Kyoji Kimoto, Hirotsugu Miyauchi, Jukichi Ohmura, Mikio Ebisawa, Toshioki Hane
  • Patent number: 4536352
    Abstract: A novel fluorinated copolymer is prepared by copolymerization of a fluorinated olefin with a novel sulfur containing fluorinated vinylether of the formula: ##STR1## wherein k is 0 or 1 and l is an integer of 3 to 5, which is prepared from starting materials which are also novel. Said copolymer is useful for preparation of a fluorinated cation exchange membrane having carboxylic acid groups and/or sulfonic acid groups which can be used advantageously in electrolysis of an aqueous alkali metal halide solution with improved electrolysis performance.
    Type: Grant
    Filed: December 14, 1981
    Date of Patent: August 20, 1985
    Assignee: Asahi Kasei Kogyo Kabushiki Kaisha
    Inventors: Kyoji Kimoto, Hirotsugu Miyauchi, Jukichi Ohmura, Mikio Ebisawa, Toshioki Hane
  • Patent number: 4511518
    Abstract: A novel fluorinated copolymer is prepared by copolymerization of a fluorinated olefin with a novel sulfur containing fluorinated vinylether of the formula: ##STR1## wherein k is 0 or 1 and l is an integer of 3 to 5, which is prepared from starting materials, which are also novel. Said copolymer is useful for preparation of a fluorinated cation exchange membrane having carboxylic acid groups and/or sulfonic acid groups which can be used advantageously in electrolysis of an aqueous alkali metal halide solution with improved electrolysis performance.
    Type: Grant
    Filed: August 30, 1983
    Date of Patent: April 16, 1985
    Assignee: Asahi Kasei Kogyo Kabushiki Kaisha
    Inventors: Kyoji Kimoto, Hirotsugu Miyauchi, Jukichi Ohmura, Mikio Ebisawa, Toshioki Hane
  • Patent number: 4510328
    Abstract: A novel fluorinated cation exchange membrane containing carboxylic acid groups and sulfonic acid groups, both in the form of a specific pendant structure, the carboxylic acid groups being at least 20% on one surface of the membrane and gradually decreasing toward the innerside of the membrane, which membrane is useful in electrolysis of an aqueous alkali metal halide solution with advantageously stable performance for a long term under more severe operational conditions than those conventionally used. The membrane can be prepared from a novel copolymer of a fluorinated olefin with a novel sulfur containing fluorinated vinylether of the formula: ##STR1## wherein k is 0 or 1, l is an integer of 3 to 5, Z is --S-- or --SO.sub.2 -- and R is C.sub.1 -C.sub.10 alkyl, an aryl, Cl or C.sub.1 -C.sub.10 perfluoroalkyl.
    Type: Grant
    Filed: September 3, 1981
    Date of Patent: April 9, 1985
    Assignee: Asahi Kasei Kogyo Kabushiki Kaisha
    Inventors: Kyoji Kimoto, Hirotsugu Miyauchi, Jukichi Ohmura, Mikio Ebisawa, Toshioki Hane
  • Patent number: 4382123
    Abstract: A fluorinated cation exchange membrane characterized by the gradual decrease in proportion of the density of carboxylic acid and/or carboxylate groups relative to the total density of carboxylic acid and/or carboxylate groups and sulfonic acid and/or sulfonate groups from one surface of the membrane to the other surface or an internal plane therewithin. The cation exchange membrane of the present invention can be prepared by treating one surface of a membrane comprising a fluorocarbon polymer containing pendant groups of the formula:--OCF.sub.2 CF.sub.2 SO.sub.2 Xwherein each X independently is fluorine, chlorine, bromine, hydrogen, ammonium, a quaternary ammonium or a metal atom, with a treating agent having a reducing activity in the presence of a reaction controlling agent selected from carboxylic acids, sulfonic acids, alcohols, nitriles and ethers.
    Type: Grant
    Filed: January 29, 1982
    Date of Patent: May 3, 1983
    Assignee: Asahi Kasei Kogyo Kabushiki Kaisha
    Inventors: Kyoji Kimoto, Hirotsugu Miyauchi, Jukichi Ohmura, Mikio Ebisawa, Toshioki Hane
  • Patent number: 4332665
    Abstract: A fluorinated cation exchange membrane characterized by the gradual decrease in proportion of the density of carboxylic acid and/or carboxylate groups relative to the total density of carboxylic acid and/or carboxylate groups and sulfonic acid and/or sulfonate groups from one surface of the membrane to the other surface or an internal plane therewithin. The cation exchange membrane of the present invention can be prepared by treating one surface of a membrane comprising a fluorocarbon polymer containing pendant groups of the formula:--OCF.sub.2 CF.sub.2 SO.sub.2 Xwherein each X independently is fluorine, chlorine, bromine, hydrogen, ammonium, a quaternary ammonium or a metal atom,with a treating agent having a reducing activity in the presence of a reaction controlling agent selected from carboxylic acids, sulfonic acids, alcohols, nitriles and ethers.
    Type: Grant
    Filed: May 23, 1980
    Date of Patent: June 1, 1982
    Assignee: Asahi Kasei Kogyo Kabushiki Kaisha
    Inventors: Kyoji Kimoto, Hirotsugu Miyauchi, Jukichi Ohmura, Mikio Ebisawa, Toshioki Hane
  • Patent number: 4329434
    Abstract: A novel fluorinated cation exchange membrane containing carboxylic acid groups and sulfonic acid groups, both in the form of a specific pendant structure, the carboxylic acid groups being at least 20% on one surface of the membrane and gradually decreasing toward the innerside of the membrane, which membrane is useful in electrolysis of an aqueous alkali metal halide solution with advantageously stable performance for a long term under more severe operational conditions than those conventionally used. The membrane can be prepared from a novel copolymer of a fluorinated olefin with a novel sulfur containing fluorinated vinylether of the formula: ##STR1## wherein k is 0 or 1, l is an integer of 3 to 5, Z is --S-- or --SO.sub.2 -- and R is C.sub.1 -C.sub.10 alkyl, an aryl, Cl or C.sub.1 -C.sub.10 perfluoroalkyl.
    Type: Grant
    Filed: May 23, 1980
    Date of Patent: May 11, 1982
    Assignee: Asahi Kasei Kogyo Kabushiki Kaisha
    Inventors: Kyoji Kimoto, Hirotsugu Miyauchi, Jukichi Ohmura, Mikio Ebisawa, Toshioki Hane
  • Patent number: 4329435
    Abstract: A novel fluorinated copolymer is prepared by copolymerization of a fluorinated olefin with a novel sulfur containing fluorinated vinyl ether of the formula: ##STR1## wherein k is 0 or 1 and l is an integer of 3 to 5, which is prepared from starting materials which are also novel. Said copolymer is useful for preparation of a fluorinated cation exchange membrane having carboxylic acid groups and/or sulfonic acid groups which can be used advantageously in electrolysis of an aqueous alkali metal halide solution with improved electrolysis performance.
    Type: Grant
    Filed: May 23, 1980
    Date of Patent: May 11, 1982
    Assignee: Asahi Kasei Kogyo Kabushiki Kaisha
    Inventors: Kyoji Kimoto, Hirotsugu Miyauchi, Jukichi Ohmura, Mikio Ebisawa, Toshioki Hane
  • Patent number: 4209367
    Abstract: An electrolytic cell having anode and cathode chambers separated by a cation exchange membrane comprising a fluorocarbon polymer containing pendant carboxylic acid or salt groups of the formula ##STR1## wherein R is a group containing perfluoroalkyl or perfluoroalkoxy having 1 to 5 carbon atoms and M is hydrogen, an alkali or alkaline earth metal or ammonium as a surface stratum on the cathode side of the membrane.
    Type: Grant
    Filed: March 30, 1977
    Date of Patent: June 24, 1980
    Assignee: Asahi Kasei Kogyo Kabushiki Kaisha
    Inventors: Maomi Seko, Yasumichi Yamakoshi, Hirotsugu Miyauchi, Kyoji Kimoto, Toshioki Hane, Mitsunobu Fukumoto, Itaru Watanabe, Sakae Tsushima
  • Patent number: 4151053
    Abstract: Cation exchange membrane comprising a fluorocarbon polymer characterized by the presence of pendant carboxylic acid groups of the formula -- OCF.sub.2 COOH -- and derivatives thereof.
    Type: Grant
    Filed: March 17, 1978
    Date of Patent: April 24, 1979
    Assignee: Asahi Kasei Kogyo Kabushiki Kaisha
    Inventors: Naomi Seko, Yasumichi Yamakoshi, Hirotsugu Miyauchi, Mitsunobu Fukumoto, Kyoji Kimoto, Itaru Watanabe, Toshioki Hane, Sakae Tsushima