Patents by Inventor Hideharu Iwasaki

Hideharu Iwasaki 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).

  • Publication number: 20060281882
    Abstract: An oxygen absorption resin composition is provided that comprises a thermoplastic resin (A) having carbon-carbon double bonds substantially in its main chain and a transition metal salt (B). If necessary, the composition further comprises a gas barrier resin (C), a compatibilizer (D) and the like. The composition has excellent oxygen absorption properties, and when the composition is employed, generation of odorous substances derived from the decomposition of resins as a result of oxygen absorption can be suppressed.
    Type: Application
    Filed: May 31, 2006
    Publication date: December 14, 2006
    Applicant: Kuraray Co., Ltd.,
    Inventors: Yoshihisa Tsuji, Yasutaka Inubushi, Mie Kodani, Tatsuhiko Hayashibara, Tomoyuki Watanabe, Hideharu Iwasaki
  • Publication number: 20060116452
    Abstract: An oxygen absorber of the present invention includes at least one compound represented by Formula (1): and an oxidizable polymer. R1 and R2 each independently indicates a hydrogen atom or an organic group. R1 and R2 may form a ring together with carbon atoms to which they are bonded. R1 and/or R2 may form a carbon-carbon double bond with carbon atoms to which they are bonded.
    Type: Application
    Filed: January 17, 2006
    Publication date: June 1, 2006
    Applicant: KURARAY CO., LTD.
    Inventors: Yoshihisa Tsuji, Mie Kodani, Tomoyuki Watanabe, Hideharu Iwasaki
  • Publication number: 20060111594
    Abstract: According to the present invention, a method of producing ethers, which includes subjecting a conjugated diene compound and an alcohol to a telomerization reaction in the presence of a composition containing a palladium compound, an isocyanide represented by the formula (I) R1R2R3CNC ??(I) and a base represented by the formula (II) M(OR4)n ??(II) as a catalyst is provided. According to the method of the present invention, by telomerization reaction of a conjugated diene compound and an alcohol, ethers can be produced industrially advantageously. (In the above-mentioned formulas, each symbol is as defined in the specification.
    Type: Application
    Filed: January 20, 2004
    Publication date: May 25, 2006
    Applicant: Kuraray Co., Ltd.
    Inventors: Hiroshige Ishino, Hideharu Iwasaki
  • Publication number: 20050266990
    Abstract: In activated carbon obtained by subjecting a carbonaceous material to an activation treatment, the overall content of alkali metals is set at 100 ppm or less, or the overall content of heavy metals is set at 20 ppm or less and the overall content of alkali metals is set at 200 ppm or less. In cases where such activated carbon is used as a raw material in electronic devices, the formation of dendrites by the reductive deposition of alkali metals or heavy metals tends not to occur, so that problems such as short-circuiting or the like tend not to arise, and a good rate of self-discharge retention is shown.
    Type: Application
    Filed: July 3, 2003
    Publication date: December 1, 2005
    Inventors: Hideharu Iwasaki, Nozomu Sugo, Mitsunori Hitomi, Shushi Nishimura, Takeshi Fujino, Shigeki Oyama, Yuji Kawabuchi
  • Publication number: 20050181941
    Abstract: Activated carbon useful as polarizable electrode material for an electric double-layer capacitor can be obtained by mixing a carbonaceous material and an alkali metal hydroxide while maintaining a solid state, granulating the obtained mixture while maintaining its solid state, dehydrating the obtained granulated substance while maintaining its solid state, and subjecting the granulated dehydration product obtained in the dehydration step to an activation treatment. The preferred pressure of the granulation treatment in the granulation step is 0.01 to 300 Torr, and the preferred temperature of the granulation treatment is 90 to 140° C. The preferred pressure of the dehydration treatment in the dehydration step is 0.01 to 10 Torr, and the preferred temperature of the dehydration treatment is 200 to 400° C.
    Type: Application
    Filed: April 22, 2003
    Publication date: August 18, 2005
    Inventors: Nozomu Sugo, Hideharu Iwasaki, Takanori Kitamura, Tatsuo Morotomi, Tsuyoshi Kowaka, Teruhiro Okada, Shushi Nishimura, Takeshi Fujino, Shigeki Oyama, Yuji Kawabuchi
  • Publication number: 20050153087
    Abstract: An oxygen absorption resin composition is provided that comprises a thermoplastic resin (A) having carbon-carbon double bonds substantially in its main chain and a transition metal salt (B). If necessary, the composition further comprises a gas barrier resin (C), a compatibilizer (D) and the like. The composition has excellent oxygen absorption properties, and when the composition is employed, generation of odorous substances derived from the decomposition of resins as a result of oxygen absorption can be suppressed.
    Type: Application
    Filed: November 29, 2004
    Publication date: July 14, 2005
    Applicant: Kuraray Co., Ltd.
    Inventors: Yoshihisa Tsuji, Mie Kodani, Tomoyuki Watanabe, Hideharu Iwasaki
  • Publication number: 20050047061
    Abstract: An activated carbon which is prepared from granular isotropic pitch.
    Type: Application
    Filed: October 13, 2004
    Publication date: March 3, 2005
    Applicant: Kuraray Co., Ltd.
    Inventors: Nozomu Sugo, Hideharu Iwasaki, Goki Uehara
  • Patent number: 6589904
    Abstract: The present invention provides an activated carbon produced by a process, which includes: activating a carbonaceous material, to obtain an activated carbonaceous material; and contacting the activated carbonaceous material with an acid. Another embodiment of the present invention provides an electrode for an electric double-layer capacitor, which includes the above-described activated carbon. Another embodiment of the present invention provides a filter, which includes the above-described activated carbon. Another embodiment of the present invention provides a shaped article, which includes the above-described activated carbon. Another embodiment of the present invention provides a method for producing activated carbon, which includes activating a carbonaceous material, to obtain an activated carbonaceous material; and contacting the activated carbonaceous material with an acid, to obtain the activated carbon.
    Type: Grant
    Filed: November 16, 2000
    Date of Patent: July 8, 2003
    Assignees: Kuraray Co., Ltd., Kuraray Chemical Co., Ltd.
    Inventors: Hideharu Iwasaki, Nozomu Sugo, Shushi Nishimura, Yoshifumi Egawa, Hajime Aoki
  • Patent number: 6559241
    Abstract: A hydrogenated polymer is prepared by a method comprising: hydrogenating a polymer having carbon—carbon double bonds and a hydroxy group and/or a functional group which is convertible into a hydroxy group or into a hydroxymethyl group in the presence of a catalyst of palladium on a base activated carbon and/or platinum on a base activated carbon.
    Type: Grant
    Filed: March 14, 2002
    Date of Patent: May 6, 2003
    Assignee: Kuraray Co., Ltd.
    Inventors: Hideharu Iwasaki, Hiroyuki Ohgi, Kikuo Arimoto
  • Patent number: 6541575
    Abstract: According to the present invention, provided is an industrially advantageous process for producing an epoxidized polymer, with safety and efficiency, wherein the epoxidation of a polymer having an olefinic carbon-carbon double bond is effected under the presence of substantially no alkali metal ion by adding an aqueous solution containing (i) ammonium tungstate and/or tungstophosphoric acid and (ii) phosphoric acid, in which the amount of (ii) phosphoric acid is not less than 0.25 moles relative to 1 gram atom of tungsten atom contained in the (i) ammonium tungstate and/or tungstophosphoric acid, and an aqueous hydrogen peroxide, separately to a solution of said polymer and a quaternary ammonium salt in an organic solvent immiscible with water.
    Type: Grant
    Filed: December 21, 2001
    Date of Patent: April 1, 2003
    Assignee: Kuraray Co., Ltd.
    Inventors: Taketoshi Okuno, Hideharu Iwasaki, Takuo Tsuruta
  • Publication number: 20020137854
    Abstract: A hydrogenated polymer is prepared by a method comprising:
    Type: Application
    Filed: March 14, 2002
    Publication date: September 26, 2002
    Applicant: KURARAY CO. LTD.
    Inventors: Hideharu Iwasaki, Hiroyuki Ohgi, Kikuo Arimoto
  • Publication number: 20020082348
    Abstract: According to the present invention, provided is an industrially advantageous process for producing an epoxidized polymer, with safety and efficiency, wherein the epoxidation of a polymer having an olefinic carbon-carbon double bond is effected under the presence of substantially no alkali metal ion by adding an aqueous solution containing (i) ammonium tungstate and/or tungstophosphoric acid and (ii) phosphoric acid, in which the amount of (ii) phosphoric acid is not less than 0.25 moles relative to 1 gram atom of tungsten atom contained in the (i) ammonium tungstate and/or tungstophosphoric acid, and an aqueous hydrogen peroxide, separately to a solution of said polymer and a quaternary ammonium salt in an organic solvent immiscible with water.
    Type: Application
    Filed: December 21, 2001
    Publication date: June 27, 2002
    Applicant: KURARAY CO. LTD,
    Inventors: Taketoshi Okuno, Hideharu Iwasaki, Takuo Tsuruta
  • Publication number: 20020048144
    Abstract: An activated carbon which is prepared from granular isotropic pitch.
    Type: Application
    Filed: July 25, 2001
    Publication date: April 25, 2002
    Applicant: Kuraray Co., Ltd. Kurashiki-shi Japan
    Inventors: Nozomu Sugo, Hideharu Iwasaki, Goki Uehara
  • Patent number: 6239295
    Abstract: A process for producing 3-methyltetrahydrofuran, and processes for producing 3-hydroxy-3-methyltetrahydrofuran and 3-methyldihydrofuran, which are intermediates thereof, are provided.
    Type: Grant
    Filed: May 24, 2000
    Date of Patent: May 29, 2001
    Assignee: Kuraray Co., LTD
    Inventor: Hideharu Iwasaki
  • Patent number: 6232506
    Abstract: Provided are a process for producing 6-methyl-3-hepten-2-one by cross aldol condensation carried out while each continuously adding to acetone, isovaleraldehyde and an aqueous alkali containing an alkaline substance; a process for producing a 6-methyl-2-heptanone analogue represented by Formula (1): wherein n is an integer of 0 or 1 or more; which comprises allowing hydrogen, acetone and an aldehyde represented by Formula (2): wherein n is as defined above; X and Y each represents a hydrogen atom or they are coupled together to form a carbon-carbon bond; and Z and W each represents a hydrogen atom or they are coupled together to form a carbon-carbon bond; to react in the presence of an aqueous alkali containing an alkaline substance, and a hydrogenation catalyst; and a process for producing phytone or isophytol using the 6-methyl-3-hepten-2-one or the 6-methyl-2-heptanone analogue.
    Type: Grant
    Filed: June 24, 1999
    Date of Patent: May 15, 2001
    Assignee: Kuraray Co., Lyd.
    Inventors: Yoichi Kido, Noriaki Kumagai, Hideharu Iwasaki, Takashi Onishi, Fuyuo Ueyama
  • Patent number: 5955636
    Abstract: Provided are a process for producing 6-methyl-3-hepten-2-one by cross aldol condensation carried out while each continuously adding to acetone, isovaleraldehyde and an aqueous alkali containing an alkaline substance; a process for producing a 6-methyl-2-heptanone analogue represented by Formula (1): ##STR1## wherein n is an integer of 0 or 1 or more; which comprises allowing hydrogen, acetone and an aldehyde represented by Formula (2): ##STR2## wherein n is as defined above; X and Y each represents a hydrogen atom or they are coupled together to form a carbon-carbon bond; and Z and W each represents a hydrogen atom or they are coupled together to form a carbon-carbon bond;to react in the presence of an aqueous alkali containing an alkaline substance, and a hydrogenation catalyst; and a process for producing phyton or isophytol using the 6-methyl -3-hepten-2-one or the 6-methyl-2-heptanone analogue.
    Type: Grant
    Filed: July 2, 1997
    Date of Patent: September 21, 1999
    Assignee: Kuraray Co., Ltd.
    Inventors: Yoichi Kido, Noriaki Kumagai, Hideharu Iwasaki, Takashi Onishi, Fuyuo Ueyama
  • Patent number: 5840992
    Abstract: In order to make it possible to produce 6-methylheptan-2-one, which is useful as a material for synthesizing isophytol or as a material for synthesizing fragrances such as tetrahydrolinalool and dihydrogeraniol, efficiently and in an industrially simple manner, isovaleral and acetone are subjected to aldol condensation in the presence of a basic substance to form a condensate which contains 4-hydroxy-6-methylheptan-2-one, and then the condensate is subjected to hydrogenation reaction under a dehydration condition to obtain the 6-methylheptan-2-one.
    Type: Grant
    Filed: December 2, 1996
    Date of Patent: November 24, 1998
    Assignee: Kuraray Co., Ltd.
    Inventors: Yoichi Kido, Masahiko Kitayama, Koichi Yoneda, Hideharu Iwasaki, Takashi Onishi
  • Patent number: 5792876
    Abstract: A process is described for producing acetals comprising reacting an aldehyde or a ketone with an alcohol in the presence of a titanium compound having an acetylacetone as a ligand, or in the presence of a compound selected from the group consisting of stannous chloride dihydrate, cerium chloride hexahydrate and bismuth chloride. The process can be used in the synthesis of unstable acetals or when water exists in the reaction mixture, and therefore the process can be used for a wide variety of applications.
    Type: Grant
    Filed: November 6, 1996
    Date of Patent: August 11, 1998
    Assignee: Kuraray Co., Ltd.
    Inventors: Hideharu Iwasaki, Masahiko Kitayama, Takashi Onishi
  • Patent number: 5770762
    Abstract: Described is a process for producing a 4-substituted-2-butenal represented by the following formula (1); ##STR1## (wherein X represents an acyloxy group or halogen atom; R represents hydrogen atom, an aliphatic hydrocarbon group or an aromatic hydrocarbon group; and these hydrocarbon groups can be substituted with hydroxyl group, an alkoxy group, an aryloxy group, an acyl group or an alkoxycarbonyl group), which is useful as synthetic intermediates of phormaceutieals, agricultural chemicals and the like,comprising subjecting a substituted acetaldehyde represented by the following formula (2);X--CH.sub.2 --CHO (2)(wherein X has the same meaning as defined above), with an aldehyde represented by the following formula (3);R--CH.sub.2 --CHO (3)(wherein R has the same meaning as defined above) in the presence of an amino carboxylic acid.
    Type: Grant
    Filed: April 22, 1997
    Date of Patent: June 23, 1998
    Assignee: Kuraray Co., Ltd.
    Inventors: Hideharu Iwasaki, Takashi Onishi
  • Patent number: 5500484
    Abstract: A compound that can be converted, at a low cost and in a simple way, into 2-aryl-1,3-propanediols serving as precursors for synthesizing felbamate acting as an antiepileptic has a structure represented by Formula (1): ##STR1## wherein Ar represents an aryl group; R.sup.1 represents a hydrogen atom or is R.sup.4 or R.sup.5, where R.sup.4 represents an alkoxy group having 1 to 10 carbon atoms and R.sup.5 represents a hydroxy group or an acyloxy group having 1 to 10 carbon atoms; and R.sup.2 and R.sup.3 are hydrogen atoms at the same time or R.sup.2 and R.sup.3 together form a group represented by Formula (2): ##STR2## wherein R.sup.6 and R.sup.7 each independently represent a hydrogen atom or an alkyl group having 1 to 5 carbon atoms, or R.sup.6 and R.sup.7 together form an oligomethylene group having 2 to 10 carbon atoms.
    Type: Grant
    Filed: August 26, 1994
    Date of Patent: March 19, 1996
    Assignee: Kuraray Co., Ltd.
    Inventors: Hideharu Iwasaki, Koichi Yoneda, Yoichi Kido, Takeo Hosogai, Kazuo Itoi, Masahiko Kitayama