Patents by Inventor Tomonori Kawabata

Tomonori Kawabata 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: 10807961
    Abstract: A method for producing propylene oxide involves an oxidation step, a distillation step, an epoxidation step, and a separation step. The distillation step involves distilling the reaction mixture containing cumene hydroperoxide to separate it into a concentrate containing cumene hydroperoxide and a distillate. The reaction mixture is continuously distilled so that the ratio of the flow rate of the distillate to the flow rate of the reaction mixture to be distilled is 0.037 to 0.13. The epoxidation step involves obtaining a reaction mixture containing propylene oxide and cumyl alcohol by contacting the concentrate with propylene in the presence of a catalyst in one or more reactors to cause a reaction between propylene and cumene hydroperoxide in the concentrate, in which the outlet temperature of the final reactor is adjusted to 115° C. or more and less than 140° C.
    Type: Grant
    Filed: July 25, 2017
    Date of Patent: October 20, 2020
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Hirofumi Koike, Tomonori Kawabata, Takuo Takemoto, Motoshi Nakamura, Satoru Takemoto
  • Publication number: 20200224029
    Abstract: A method for producing an aqueous polyimide precursor solution composition includes reacting a tetracarboxylic dianhydride and a diamine in the presence of an imidazole, using water as a reaction solvent to provide an aqueous polyimide precursor solution composition. The polyamic acid and the imidazole are dissolved in the water. A concentration of the polyamic acid is 5 to 45 wt %, The imidazole is an imidazole having two or more alkyl groups as substituents. An amount of the imidazole is 1.6 moles or more per mole of the tetracarboxylic dianhydride, and a concentration of the imidazole compound based on a sum of the imidazole compound and the water is 9.47 wt % or less. The diamine component includes a diamine having a solubility in water at 25° C. of 0.
    Type: Application
    Filed: March 26, 2020
    Publication date: July 16, 2020
    Inventors: Takeshige Nakayama, Tomonori Nakayama, Susumu Takasaki, Akira Kawabata, Kenji Sonoyama
  • Publication number: 20200140403
    Abstract: A method for producing propylene oxide involves an oxidation step, a distillation step, an epoxidation step, and a separation step. The distillation step involves distilling the reaction mixture containing cumene hydroperoxide to separate it into a concentrate containing cumene hydroperoxide and a distillate. The reaction mixture is continuously distilled so that the ratio of the flow rate of the distillate to the flow rate of the reaction mixture to be distilled is 0.037 to 0.13. The epoxidation step involves obtaining a reaction mixture containing propylene oxide and cumyl alcohol by contacting the concentrate with propylene in the presence of a catalyst in one or more reactors to cause a reaction between propylene and cumene hydroperoxide in the concentrate, in which the outlet temperature of the final reactor is adjusted to 115° C. or more and less than 140° C.
    Type: Application
    Filed: July 25, 2017
    Publication date: May 7, 2020
    Inventors: Hirofumi KOIKE, Tomonori KAWABATA, Takuo TAKEMOTO, Motoshi NAKAMURA, Satoru TAKEMOTO
  • Patent number: 10494038
    Abstract: The vibration of a cab deck as well as the mass of a deck supporting member is suppressed. A slewing frame of an upper slewing body includes a front plate connected to a second side plate. A cab deck is disposed on a front side of an engine deck with a gap between the cab deck and the engine deck. A deck supporting member is connected to the second side plate and the cab deck. When viewed along an up-and-down direction, a connection portion of the front plate to be connected to the second side plate is opposed to, in the lateral direction via the second side plate, a connection portion of the deck supporting member to be connected to the second side plate.
    Type: Grant
    Filed: May 12, 2016
    Date of Patent: December 3, 2019
    Assignees: Kobe Steel, Ltd., KOBELCO CONSTRUCTION MACHINERY CO., LTD.
    Inventors: Masashi Irie, Takahiro Shinozaki, Yoshimune Mori, Masashi Kawabata, Kiyotsuna Kuchiki, Tomonori Nakashita, Masaya Nishizawa, Yasumasa Kimura, Eri Watanabe
  • Publication number: 20190152532
    Abstract: The vibration of a cab deck as well as the mass of a deck supporting member is suppressed. A slewing frame 10 of an upper slewing body 1 includes a front plate 17 connected to a second side plate 15B. A cab deck 30 is disposed on a front side X1 of an engine deck 20 with a gap S between the cab deck 30 and the engine deck 20. A deck supporting member 40 is connected to the second side plate 15B and the cab deck 30. When viewed along an up-and-down direction Z, a connection portion of the front plate 17 to be connected to the second side plate 15B is opposed to, in the lateral direction Y via the second side plate 15B, a connection portion of the deck supporting member 40 to be connected to the second side plate 15B.
    Type: Application
    Filed: May 12, 2016
    Publication date: May 23, 2019
    Applicants: KABUSHIKI KAISHA KOBE SEIKO SHO (Kobe Steel, Ltd.), KOBELCO CONSTRUCTION MACHINERY CO., LTD.
    Inventors: Masashi IRIE, Takahiro SHINOZAKI, Yoshimune MORI, Masashi KAWABATA, Kiyotsuna KUCHIKI, Tomonori NAKASHITA, Masaya NISHIZAWA, Yasumasa KIMURA, Eri WATANABE
  • Publication number: 20130005999
    Abstract: A method for regenerating a titanosilicate catalyst, comprising a step of mixing a titanosilicate having reduced catalytic ability with a cyclic secondary amine, and a method for producing an oxirane compound, which comprises a step of reacting hydrogen peroxide with a C2-C12 compound having a carbon-carbon double bond, in the presence of a titanosilicate catalyst obtained by the regeneration method.
    Type: Application
    Filed: March 11, 2011
    Publication date: January 3, 2013
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Tomonori Kawabata, Masato Yoshioka
  • Publication number: 20120296102
    Abstract: It is intended to provide a production method for producing propylene oxide from propylene, hydrogen and oxygen, with improved reaction rate. The present invention provides a method for producing propylene oxide, comprising a step of reacting propylene, hydrogen and oxygen, in the presence of a Pd-supported catalyst, a titanosilicate catalyst and a Pd-free carbon material, in a liquid phase.
    Type: Application
    Filed: January 27, 2011
    Publication date: November 22, 2012
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Tomonori Kawabata, Hiroaki Abekawa
  • Publication number: 20120277445
    Abstract: The present invention relates to a method for producing propylene oxide, comprising a step of bringing propylene, oxygen and a silver catalyst into contact with each other in the presence of water, wherein the silver catalyst is a catalyst prepared from (a) metallic silver, a silver compound or a mixture thereof, (b) phosphorus, a phosphorus-containing compound or a mixture thereof and (c) a carrier.
    Type: Application
    Filed: December 6, 2010
    Publication date: November 1, 2012
    Inventors: Tomonori Kawabata, Hirotsugu Kano, Avelino Corma
  • Patent number: 8273907
    Abstract: A process for more efficiently producing propylene oxide from propylene, oxygen, and hydrogen with catalysts which comprise a noble metal and a titanosilicate having pores not smaller than a 12-membered oxygen ring. The process for propylene oxide production is characterized by reacting propylene, oxygen, and hydrogen in a solution comprising water, a nitrite compound, and an ammonium salt in the presence of a noble metal catalyst and a titanosilicate catalyst having pores not smaller than a 12-membered oxygen ring.
    Type: Grant
    Filed: December 25, 2006
    Date of Patent: September 25, 2012
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Tomonori Kawabata, Hiroaki Abekawa
  • Patent number: 8207359
    Abstract: A method for producing an epoxy compound characterized by comprising contacting an olefin, oxygen and hydrogen with a noble metal and a crystalline titanosilicate having an MFI structure in a liquid phase in the presence of a quinoid compound selected from the group consisting of a phenanthraquinone compound and a compound represented by formula (1) wherein R1, R2, R3 and R4 represent a hydrogen atom, or R1 and R2 or R3 and R4 adjacent to each other are each independently bound at the ends and represent, together with a carbon atom of a quinone to which they are respectively attached, a benzene ring which may be substituted with an alkyl group or a hydroxyl group, or a naphthalene ring which may be substituted with an alkyl group or a hydroxyl group; and X and Y, which is the same or different, represent an oxygen atom or an NH group, or a dihydro compound thereof.
    Type: Grant
    Filed: April 26, 2007
    Date of Patent: June 26, 2012
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Tomonori Kawabata, Hiroaki Abekawa
  • Publication number: 20110313179
    Abstract: The invention provides a method for producing an olefin oxide which comprises reacting hydrogen peroxide and an olefin in a solvent containing water, a nitrile compound and a cyclic secondary amine compound, in the presence of a titanosilicate having a pore composed of a 12- or more-membered oxygen ring.
    Type: Application
    Filed: March 12, 2010
    Publication date: December 22, 2011
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Tomonori Kawabata, Makoto Yako
  • Publication number: 20110288316
    Abstract: A method for producing propylene oxide which comprises reacting propylene, oxygen and hydrogen, in the presence of a titanosilicate and a noble metal supported on silylated active carbon, in a solvent.
    Type: Application
    Filed: January 29, 2010
    Publication date: November 24, 2011
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Tomonori Kawabata, Tetsuro Yonemoto
  • Publication number: 20110282082
    Abstract: A method for producing an oxidized compound according to the present invention comprises reacting an organic compound with an oxidizing agent in the presence of titanosilicate (I) or a silylated form thereof, the titanosilicate (I) being obtained by contacting titanosilicate (II) with a structure-directing agent, and the titanosilicate (II) having an X-ray diffraction pattern reproduced in the form of interplanar spacings d of 1.24±0.08 nm, 1.08±0.03 nm, 0.9±0.03 nm, 0.6±0.03 nm, 0.39±0.01 nm and 0.34±0.01 nm.
    Type: Application
    Filed: September 18, 2009
    Publication date: November 17, 2011
    Inventors: Tomonori Kawabata, Tetsuro Yonemoto
  • Publication number: 20110237810
    Abstract: The present invention relates to a method for producing a Ti-MWW precursor comprising: a first step of heating a mixture to prepare a solid, said mixture comprising a structure-directing agent, a compound containing a Group 13 element of the periodic table, a titanium-containing compound (1), a silicon-containing compound and water; and a second step of contacting the solid with a titanium-containing compound (2) and an inorganic acid.
    Type: Application
    Filed: December 4, 2009
    Publication date: September 29, 2011
    Inventors: Tomonori Kawabata, Makoto Yako
  • Patent number: 7999125
    Abstract: There is disclosed a method for producing propylene oxide, which includes: reacting propylene, oxygen, and hydrogen in the presence of a noble metal catalyst and a titanosilicate catalyst in a liquid phase containing a polycyclic compound, which is unsubstituted or substituted with at least one substituent selected from Group B below, wherein the polycyclic compound is composed of two or more identical or different ring compounds selected from Group A below and the ring compounds are fused, directly bonded, or bonded by a linkage group selected from the group consisting of an oxygen atom, carbon chain, and a group composed of oxygen atom(s) and a carbon chain, provided that said polycyclic compound is not a polycyclic compound having hydroxy groups or oxo groups at para or. ortho positions. Group A consisting of benzene, cyclopentadiene, cycloheptatriene, furane, pyrane, cyclopentene, cyclopentane, cyclohexane, cyclohexene, cyclohexadiene, cycloheptane, cycloheptene, and cycloheptadiene.
    Type: Grant
    Filed: June 19, 2008
    Date of Patent: August 16, 2011
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Hiroaki Abekawa, Tomonori Kawabata, Makoto Yako
  • Patent number: 7994349
    Abstract: An object of the present invention is to provide an efficient process for producing an epoxy compound from olefin, oxygen and hydrogen. The process of the present invention is characterized in that an olefin, oxygen and hydrogen are reacted in a liquid phase in the presence of a titanosilicate selected from the group consisting of a crystalline titanosilicate having MEL structure, MTW structure, BEA structure, MWW structure or DON structure, a mesoporous titanosilicate and a lamellar titanosilicate, a noble metal catalyst, and a quinoid compound or a dihydro-form of quinoid compound.
    Type: Grant
    Filed: January 9, 2007
    Date of Patent: August 9, 2011
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Tomonori Kawabata, Hiroaki Abekawa
  • Publication number: 20110034711
    Abstract: A layered titanosilicate obtained by contacting a layered borosilicate with a titanium source and an inorganic acid, and a method for producing an epoxy compound wherein the layered titanosilicate is used as a catalyst.
    Type: Application
    Filed: March 30, 2009
    Publication date: February 10, 2011
    Inventors: Tomonori Kawabata, Hiroaki Abekawa
  • Publication number: 20110009651
    Abstract: The present invention provides a regeneration method of a titanosilicate catalyst, specifically provides a regeneration method of a titanosilicate catalyst which comprises contacting the titanosilicate catalyst deteriorated in catalytic ability with a nitrile compound or a mixture of water and a nitrile compound at a temperature from 25° C. to 200° C.
    Type: Application
    Filed: March 3, 2009
    Publication date: January 13, 2011
    Inventors: Tomonori Kawabata, Hiroaki Abekawa, Makoto Yako
  • Publication number: 20100197945
    Abstract: There is disclosed a method for producing propylene oxide, which includes: reacting propylene, oxygen, and hydrogen in the presence of a noble metal catalyst and a titanosilicate catalyst in a liquid phase containing a polycyclic compound, which is unsubstituted or substituted with at least one substituent selected from Group B below, wherein the polycyclic compound is composed of two or more identical or different ring compounds selected from Group A below and the ring compounds are fused, directly bonded, or bonded by a linkage group selected from the group consisting of an oxygen atom, carbon chain, and a group composed of oxygen atom(s) and a carbon chain, provided that said polycyclic compound is not a polycyclic compound having hydroxy groups or oxo groups at para or. ortho positions. Group A consisting of benzene, cyclopentadiene, cycloheptatriene, furane, pyrane, cyclopentene, cyclopentane, cyclohexane, cyclohexene, cyclohexadiene, cycloheptane, cycloheptene, and cycloheptadiene.
    Type: Application
    Filed: June 19, 2008
    Publication date: August 5, 2010
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Hiroaki Abekawa, Tomonori Kawabata, Makoto Yako
  • Publication number: 20100056815
    Abstract: A method for producing propylene oxide according to the present invention includes the step of reacting propylene, oxygen and hydrogen in a liquid phase in the presence of titanosilicate and a noble metal catalyst supported on a carrier comprising a noble metal catalyst and activated carbon having total pore volume of 0.9 cc/g or more. This makes it possible to provide a method for efficiently producing propylene oxide from propylene, oxygen, and hydrogen.
    Type: Application
    Filed: January 21, 2008
    Publication date: March 4, 2010
    Inventors: Tomonori Kawabata, Hiroaki Abekawa, Yuka Kawashita