Patents Assigned to Toho Titanium Co., Ltd.
  • Publication number: 20220017664
    Abstract: A solid catalyst component for polymerization of an olefin having a polymerization activity equivalent to or higher than a solid catalyst component having a phthalic acid ester compound or diether compound as an internal electron-donating compound, and can produce an olefin polymer having excellent bulk density and low content of olefin oligomers.
    Type: Application
    Filed: July 17, 2020
    Publication date: January 20, 2022
    Applicant: TOHO TITANIUM CO., LTD.
    Inventors: Toshiya Uozumi, Teppei Ishikawa
  • Patent number: 11225536
    Abstract: A solid catalyst component for polymerization of an olefin having a polymerization activity equivalent to or higher than a solid catalyst component having a phthalic acid ester compound or diether compound as an internal electron-donating compound, and can produce an olefin polymer having excellent bulk density and low content of olefin oligomers.
    Type: Grant
    Filed: July 17, 2020
    Date of Patent: January 18, 2022
    Assignee: TOHO TITANIUM CO., LTD.
    Inventors: Toshiya Uozumi, Teppei Ishikawa
  • Patent number: 11219891
    Abstract: A method for manufacturing a solid catalyst component for polymerization of an olefin is disclosed, which includes bringing a magnesium compound and a specific styrene-based compound into contact with each other to obtain a preliminary contact product, and subsequently bringing the preliminary contact product, a titanium halide compound, and an internal electron donor compound into contact with each other to obtain a solid catalyst component for polymerization of an olefin; and a method for manufacturing a catalyst for polymerization of an olefin and a method for manufacturing a polymer of an olefin using the solid catalyst component for polymerization of an olefin obtained by the manufacturing method.
    Type: Grant
    Filed: October 30, 2020
    Date of Patent: January 11, 2022
    Assignee: TOHO TITANIUM CO., LTD.
    Inventors: Toshiya Uozumi, Teppei Ishikawa
  • Patent number: 11192965
    Abstract: Provided is a solid catalyst component for olefin polymerization comprising an electron-donating compound other than a phthalate, the solid catalyst component being equal in the olefin-polymerizing activity and in the primary physical properties of the resulting polymer such as stereoregularity and molecular weight distribution to those with use of a phthalate as an electron-donating compound. A solid catalyst component for olefin polymerization comprises a magnesium atom, a titanium atom, a halogen atom, an ester compound (A) represented by a general formula (1) and a diester compound (B) represented by a general formula (2), wherein a ratio represented by the following expression: (content (mass %) of ester compound (A)/content (mass %) of diester compound (B)) is 0.05 to 50.
    Type: Grant
    Filed: December 26, 2016
    Date of Patent: December 7, 2021
    Assignee: TOHO TITANIUM CO., LTD.
    Inventors: Toshiya Uozumi, Hiroyuki Kono, Shinta Marui, Chika Uzawa
  • Publication number: 20210184224
    Abstract: A manufacturing method of a gas diffusion layer with a microporous layer includes coating a gas diffusion layer containing titanium with a precursor containing an electroconductive material, a water-repellent resin, and a polyethylene oxide, and heating the gas diffusion layer coated with the precursor to form a microporous layer containing the electroconductive material and the water-repellent resin on a surface of the gas diffusion layer. The heating atmosphere is a non-oxidation atmosphere where an oxygen concentration is no more than 0.3% by volume.
    Type: Application
    Filed: September 16, 2020
    Publication date: June 17, 2021
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, TOHO TITANIUM CO., LTD.
    Inventors: Hiroyuki Kawai, Yosuke INOUE
  • Patent number: 11008408
    Abstract: There is provided a novel alkoxymagnesium which, when used as a constituent of a solid catalyst component for olefin polymerization to polymerize an olefin, may reduce the formation rate of a fine powder and may form a polymer having an excellent particle size distribution under high polymerization activity. The alkoxymagnesium is characterized by comprising secondary particles each of which is an aggregate of primary particles having an average particle diameter of less than 1 ?m and by having a ratio represented by the average particle diameter of the primary particles/the average particle diameter of the secondary particles of 0.1 or less, a total pore volume of 0.5 to 1 cm3/g, a specific surface area of less than 50 m2/g, and a particle size distribution index (SPAN) 1 or less.
    Type: Grant
    Filed: March 23, 2017
    Date of Patent: May 18, 2021
    Assignee: TOHO TITANIUM CO., LTD.
    Inventors: Hiroyuki Kono, Shingo Yamada, Toshiya Uozumi
  • Publication number: 20210114099
    Abstract: A porous titanium-based sintered body, having a porosity of 50% to 75%, an average pore diameter of 23 ?m to 45 ?m, and a specific surface area of 0.020 m2/g to 0.065 m2/g, and having a bending strength of 22 MPa or more. According to the present invention, a porous titanium-based sintered body having a high porosity, a large specific surface area and a large average pore diameter and thereby having good gas permeability or liquid permeability, and further having a high strength can be provided.
    Type: Application
    Filed: March 13, 2019
    Publication date: April 22, 2021
    Applicant: TOHO TITANIUM CO., LTD.
    Inventors: Yasuhiko Goto, Shogo Tsumagari, Takahiro Fuji
  • Publication number: 20210108287
    Abstract: Provided is sponge titanium produced by the Kroll method, in which the total of a chlorine content and a magnesium content is 350 ppm by mass or lower, and a filling density is 1.65 g/cm3 to 1.95 g/cm3. The present invention can provide sponge titanium for large ingot production that is difficult to cause problems due to chloride inclusion at the time of melting production of the large ingot by a melting method not associated with compression molding and has easy component control and also provide a method for industrially efficiently producing the sponge titanium.
    Type: Application
    Filed: February 19, 2018
    Publication date: April 15, 2021
    Applicant: TOHO TITANIUM CO., LTD.
    Inventors: Yosuke Inoue, Masanori Yamaguchi
  • Publication number: 20210066723
    Abstract: To provide a titanium-based porous body that has high void fraction to ensure gas permeability and water permeability for practical use as an electrode and a filter, has a large specific surface area to ensure conductivity and sufficient reaction sites with a reaction solution or a reaction gas, thus showing excellent reaction efficiency, and contains less contaminants because of no organic substance used. A titanium-based porous body having a specific void fraction and a high specific surface area is obtained by filling an irregular-shaped titanium powder having an average particle size of 10 to 50 ?m in a dry system without using any binder or the like into a thickness of 4.0×10?1 to 1.6 mm, and sintering the irregular-shaped titanium powder at 800 to 1100° C.
    Type: Application
    Filed: March 19, 2018
    Publication date: March 4, 2021
    Applicant: TOHO TITANIUM CO., LTD.
    Inventors: Masashi HAYAKAWA, Syogo TSUMAGARI
  • Publication number: 20210053838
    Abstract: An alkali metal titanate includes an alkali metal titanate phase and a composite oxide containing Al, Si and Na, wherein a percentage of a ratio of the number of moles of Na to a total number of moles of Na and alkali metal X other than Na, ((Na/(Na+X))×100), is 50 to 100 mol %, and a percentage of a ratio of a total content of Si and Al to a content of Ti, (((Si+Al)/Ti)×100), is 0.3 to 10 mass %. According to the disclosure, an alkali metal titanate having a small content of a compound having a shorter diameter d of 3 ?m or less, a longer diameter L of 5 ?m or more and an aspect ratio (L/d) of 3 or more can be provided.
    Type: Application
    Filed: November 13, 2018
    Publication date: February 25, 2021
    Applicant: ToHo Titanium Co, Ltd.
    Inventors: Daisuke TAKI, Hideki SAKAI
  • Publication number: 20210040247
    Abstract: Provided is a solid catalyst component for olefin polymerization comprising an electron-donating compound other than a phthalate, the solid catalyst component being equal in the olefin-polymerizing activity and in the primary physical properties of the resulting polymer such as stereoregularity and molecular weight distribution to those with use of a phthalate as an electron-donating compound. A solid catalyst component for olefin polymerization comprises a magnesium atom, a titanium atom, a halogen atom, an ester compound (A) represented by a general formula (1) and a diester compound (B) represented by a general formula (2), wherein a ratio represented by the following expression: (content (mass %) of ester compound (A)/content (mass %) of diester compound (B)) is 0.05 to 50.
    Type: Application
    Filed: December 26, 2016
    Publication date: February 11, 2021
    Applicant: TOHO TITANIUM CO., LTD.
    Inventors: Toshiya Uozumi, Hiroyuki Kono, Shinta Marui, Chika Uzawa
  • Publication number: 20210040245
    Abstract: Provided is a novel olefin polymer which is excellent in lightness and moldability, has high rigidity and yields molded products excellent in flexural elasticity. The olefin polymer includes a propylene initial polymerization product formed in the presence of an olefin polymerization catalyst which is a contact reaction product of an olefin polymerization solid catalyst component containing a titanium atom, a magnesium atom, a halogen atom and an internal electron donating compound, at least one organoaluminum compound selected from the compounds of the general formula (I), and a first external electron donating compound; and a polypropylene part formed of a propylene polymerization product formed in the presence of the olefin polymerization catalyst and a second external electron donating compound higher in adsorption to the surface of the olefin polymerization solid catalyst component than the first external electron donating compound.
    Type: Application
    Filed: January 25, 2019
    Publication date: February 11, 2021
    Applicant: TOHO TITANIUM CO., LTD.
    Inventors: Toshiya Uozumi, Tetsuya Morioka, Keiichi Kurosaki, Teppei Ishikawa
  • Publication number: 20210016352
    Abstract: A porous titanium-based sintered body, having a porosity of 45% to 65%, an average pore diameter of 5 ?m to 15 ?m, and a bending strength of 100 MPa or more. According to the present invention, a porous titanium-based sintered body having good pore diameter and porosity that are compatible with each other and having a high strength can be provided.
    Type: Application
    Filed: March 18, 2019
    Publication date: January 21, 2021
    Applicant: TOHO TITANIUM CO., LTD.
    Inventors: Yasuhiko Goto, Shogo Tsumagari, Takahiro Fuji
  • Patent number: 10837084
    Abstract: A molten salt electrolyzer having a metal collection chamber, an electrolysis chamber, and two or more electrolytic cell units positioned in the electrolysis chamber. Each electrolytic cell unit has a cathode having an inner space in a prism form; at least one bipolar electrode in a rectangular cylinder form and disposed in the cathode inner space; and an anode in a prism form and disposed in an inner space of the bipolar electrode. At least part of individual planes forming an outer side of the bipolar electrode closest to the cathode faces a plane forming the prism-form inner space of the cathode. At least part of individual planes forming the inner side of the bipolar electrode closest to the anode faces a plane forming the prism of the anode. At least one plane of the cathode constitutes one plane of a cathode of another electrolytic cell unit.
    Type: Grant
    Filed: July 27, 2016
    Date of Patent: November 17, 2020
    Assignee: TOHO TITANIUM CO., LTD.
    Inventors: Matsuhide Horikawa, Daisuke Suzuki
  • Publication number: 20200299422
    Abstract: There is provided a novel alkoxymagnesium which, when used as a constituent of a solid catalyst component for olefin polymerization to polymerize an olefin, may reduce the formation rate of a fine powder and may form a polymer having an excellent particle size distribution under high polymerization activity. The alkoxymagnesium is characterized by comprising secondary particles each of which is an aggregate of primary particles having an average particle diameter of less than 1 ?m and by having a ratio represented by the average particle diameter of the primary particles/the average particle diameter of the secondary particles of 0.1 or less, a total pore volume of 0.5 to 1 cm3/g, a specific surface area of less than 50 m2/g, and a particle size distribution index (SPAN) 1 or less.
    Type: Application
    Filed: March 23, 2017
    Publication date: September 24, 2020
    Applicant: TOHO TITANIUM CO., LTD.
    Inventors: Hiroyuki KONO, Shingo YAMADA, Toshiya UOZUMI
  • Publication number: 20200217383
    Abstract: Provided is an alkali metal titanate which, when used as a constituent material of a friction material, is excellent in heat resistance and friction force and capable of effectively suppressing wear of a mating material disposed to face the friction material. The alkali metal titanate includes a sodium atom and a silicon atom. The content of the sodium atom is 2.0 to 8.5 mass %. The content of the silicon atom is 0.2 to 2.5 mass %. The ratio of the content of an alkali metal atom other than the sodium atom to the content of the sodium atom is 0 to 6.
    Type: Application
    Filed: July 27, 2018
    Publication date: July 9, 2020
    Applicant: TOHO TITANIUM CO., LTD.
    Inventors: Daisuke Taki, Hideki Sakai
  • Publication number: 20200199274
    Abstract: Provided is a catalyst for polymerization of an olefin which is excellent in sustained polymerization activity in the polymerization of an ?-olefin and is capable of preferably producing an ?-olefin (co)polymer having high stereoregularity and MFR and favorable moldability.
    Type: Application
    Filed: August 10, 2018
    Publication date: June 25, 2020
    Applicant: TOHO TITANIUM CO., LTD.
    Inventors: Motoki Hosaka, Toshihiko Sugano
  • Publication number: 20200140577
    Abstract: A catalyst for polymerization of an olefin is disclosed, including a compound represented by the general formula R1R2Si(NHR3)2 wherein R1 is a cycloalkyl group having 3 to 12 carbon atoms or an aromatic hydrocarbon group having 6 to 12 carbon atoms; R2 is a linear alkyl group having 1 to 10 carbon atoms or a branched alkyl group having 3 to 10 carbon atoms; the number of carbon atoms of R1 is larger by 2 or more than that of R2; and R3 is a linear alkyl group having 2 to 6 carbon atoms, a branched alkyl group having 3 to 6 carbon atoms or a cycloalkyl group having 3 to 6 carbon atoms, as an external electron-donating compound. The catalyst can prepare a polymer having excellent hydrogen activity and high stereoregularity and melt flow rate even in homopolymerization at a high temperature, with high productivity.
    Type: Application
    Filed: April 26, 2018
    Publication date: May 7, 2020
    Applicant: TOHO TITANIUM CO., LTD.
    Inventors: Motoki Hosaka, Toshihiko Sugano
  • Patent number: 10590211
    Abstract: A method for producing a solid catalyst component includes bringing a magnesium compound, a titanium halide compound, and one or more internal electron donor compounds into contact with each other to effect a reaction; washing the resulting product with a first inert organic wash solvent that does not have reactivity with the titanium halide compound, and has a solubility parameter (SP) of 8.0 to 9.0; washing the resulting intermediate product in the absence of the titanium halide compound with a second inert organic wash solvent that includes a hydrocarbon compound and does not have reactivity with the titanium halide compound, but has a solubility parameter (SP) of more than 9.0; and washing the resulting product in the absence of the titanium halide compound with a third inert organic wash solvent that does not have reactivity with the titanium halide compound, and has a solubility parameter (SP) of less than 8.0.
    Type: Grant
    Filed: December 19, 2017
    Date of Patent: March 17, 2020
    Assignee: TOHO TITANIUM CO., LTD.
    Inventors: Motoki Hosaka, Toshihiko Sugano, Tsutomu Uzawa
  • Patent number: 10487169
    Abstract: A method for producing a propylene-based block copolymer produces a propylene-based copolymer that exhibits excellent stereoregularity, rigidity, and impact resistance in a convenient and efficient manner while achieving high polymerization activity. The method for producing a propylene-based block copolymer includes bringing a catalyst into contact with propylene, or propylene and an ?-olefin, and bringing an electron donor compound into contact with the resulting product to produce a propylene-based block copolymer, the catalyst including a solid catalyst component that includes titanium, magnesium, a halogen, and an internal electron donor compound, a specific organoaluminum compound, and a specific external electron donor compound.
    Type: Grant
    Filed: August 14, 2015
    Date of Patent: November 26, 2019
    Assignee: TOHO TITANIUM CO., LTD.
    Inventors: Masafumi Imai, Toshihiko Sugano, Toshiya Uozumi, Yuta Haga