Patents Assigned to Otsuka Chemical Co., Ltd.
  • Publication number: 20240043645
    Abstract: Provided are a rubber composition for producing a foam having a high expansion ratio, a high-expansion-ratio foam, a tire, an acoustic member, a sealing material, a hose, a belt, a wire covering, a thermal insulation material, an expansion ratio improver for rubber, a method for improving the expansion ratio of a foam, and a method for producing a high-expansion-ratio foam.
    Type: Application
    Filed: December 23, 2021
    Publication date: February 8, 2024
    Applicant: OTSUKA CHEMICAL CO., LTD.
    Inventor: Seiichi AOYAGI
  • Publication number: 20240039039
    Abstract: Provided is a titanic acid-based solid electrolyte material free from risk of production of hydrogen sulfide, free of rare earth, and having good lithium-ion conductivity. The titanic acid-based solid electrolyte material is made of a lepidocrocite titanate having a structure in which a plurality of host layers are laid one on top of another, the host layer being formed so that octahedra each formed of a titanium atom coordinated with six oxygen atoms are two-dimensionally chained while sharing ridges, and lithium ions are intercalated in interlayers between the host layers, and titanium sites in the host layers are partially substituted by cations with valences of +1 to +3.
    Type: Application
    Filed: November 15, 2021
    Publication date: February 1, 2024
    Applicant: OTSUKA CHEMICAL CO., LTD.
    Inventors: Mizuki Ito, Hiroyoshi Mori
  • Publication number: 20230383188
    Abstract: Provided is a liquid crystal polymer composition having excellent light-blocking properties and capable of increasing mechanical strength, such as shock resistance. The liquid crystal polymer composition contains a liquid crystal polymer (A), a particulate carbon material (B), and a reinforcing material (C), wherein the particulate carbon material (B) has a primary particle diameter of not less than 10 nm and not more than 50 nm, and a surface of the reinforcing material (c) is at least partly covered with a treated layer made of a hydrophobic surface treatment agent.
    Type: Application
    Filed: October 25, 2021
    Publication date: November 30, 2023
    Applicant: OTSUKA CHEMICAL CO., LTD.
    Inventor: Hiroshi Yagi
  • Publication number: 20230312974
    Abstract: The present invention provides a water-repellent coating composition which enables easy removal of dirt while having good appearance due to high compatibility of a water-repellent component with other materials. The present invention provides a coating composition, comprising a siloxane group-containing polymer (A) and a crosslinking agent (B), wherein the siloxane group-containing polymer (A) is a block copolymer comprising an A block and a B block, and containing, in the A block, at least a structural unit derived from a siloxane group-containing vinyl monomer (a) and containing, in the B block, a structural unit derived from a hydroxyl group-containing vinyl monomer (b) and, as necessary, a structural unit derived from another vinyl monomer (c) copolymerizable with the vinyl monomers (a) and (b), and is a copolymer having a molecular weight distribution (Mw/Mn) of 2.0 or less and polymerized by living radical polymerization.
    Type: Application
    Filed: September 2, 2021
    Publication date: October 5, 2023
    Applicants: NIPPON PAINT AUTOMOTIVE COATINGS CO., LTD., OTSUKA CHEMICAL CO., LTD.
    Inventors: Shinsuke AKIZUKI, Yasunori MIWA, Sachiko MORIMOTO, Yuki INOUE, Satoru MASUMOTO
  • Patent number: 11772982
    Abstract: Provided is a potassium titanate powder that can avoid safety and health concerns and concurrently, during use in a friction material, can give excellent frictional properties. A potassium titanate powder is a powder formed of bar-like potassium titanate particles having an average length of 30 ?m or more, an average breadth of 10 ?m or more, and an average aspect ratio of 1.5 or more, wherein the bar-like potassium titanate particles are represented by a composition formula K2TinO2n+1 (where n=5.5 to 6.5).
    Type: Grant
    Filed: June 9, 2021
    Date of Patent: October 3, 2023
    Assignee: OTSUKA CHEMICAL CO., LTD.
    Inventors: Toshifumi Hioki, Hiroyoshi Mori, Yasuhito Ito
  • Publication number: 20230272833
    Abstract: Provided is a friction modifier giving excellent formability in producing a friction material and capable of reducing rust formation on a rotor even when the moisture-absorbed friction material is left pressed against the rotor for a long. The friction modifier is made of a titanate compound having a layered crystal structure, wherein the titanate compound has a rate of chlorine ion dissolution of 0.5 ppm to 400 ppm.
    Type: Application
    Filed: July 7, 2021
    Publication date: August 31, 2023
    Applicant: OTSUKA CHEMICAL CO., LTD.
    Inventor: Emiko Daimon
  • Patent number: 11718732
    Abstract: Provided is a resin composition, a filament and resin powder for a three-dimensional printer, a shaped object, and a production method for the shaped object, all of which make it easy to produce a shaped object and can improve, in shaping using a three-dimensional printer, the resistance to delamination of the shaped object and the resistance to warpage and shrinkage of the shaped object. A resin composition contains: inorganic fibers having an average fiber length of 1 ?m to 300 ?m and an average aspect ratio of 3 to 200; and a thermoplastic resin and serves as a shaping material for a three-dimensional printer.
    Type: Grant
    Filed: December 18, 2020
    Date of Patent: August 8, 2023
    Assignee: OTSUKA CHEMICAL CO., LTD
    Inventors: Kousuke Inada, Masagoro Okada, Akira Takarada
  • Patent number: 11713294
    Abstract: Provided is a method for producing an organic tellurium compound that enables the production of an organic tellurium compound in high yield using metallic tellurium as a source material and produces less amount of side products. A method for producing an organic tellurium compound includes the steps of: (A) reacting metallic tellurium with a compound represented by a general formula (1) below; and (B) reacting a compound obtained by the step (A) with an organic halogen compound, the metallic tellurium having a copper content of less than 100 ppm, M(R1)m ??Formula (1) where R1 represents an alkyl group having 1 to 8 carbon atoms, an aryl group or an aromatic heterocyclic group, M represents an alkali metal or an alkaline earth metal, m represents 1 when M is an alkali metal, and m represents 2 when M is an alkaline earth metal.
    Type: Grant
    Filed: November 19, 2019
    Date of Patent: August 1, 2023
    Assignee: OTSUKA CHEMICAL CO., LTD
    Inventor: Minoru Yamamoto
  • Patent number: 11708480
    Abstract: Provided is a rubber composition comprising: a rubber component containing diene-based rubber; a filler, and a compound represented by formula (I) below: (wherein: A is an aryl group and has at least two polar groups, which may be the same or different from each other; R1 and R2 are each independently at least one substituent selected from a group consisting of a hydrogen atom, an acyl group, an amide group, an alkyl group, a cycloalkyl group, and an aryl group; and further, the substituent may include one or more of O, S, and N atoms), so as to provide a rubber composition excellent in low heat generating property and wear resistance.
    Type: Grant
    Filed: August 3, 2017
    Date of Patent: July 25, 2023
    Assignee: OTSUKA CHEMICAL CO., LTD.
    Inventors: Satoshi Hamatani, Aya Saiki, Shinya Shinozaki, Mifuyu Ueno, Masaki Abe
  • Publication number: 20230204083
    Abstract: Provided is a friction modifier giving excellent formability in producing a friction material and capable of reducing rust formation on a rotor even when the moisture-absorbed friction material is left pressed against the rotor for a long. The friction modifier is made of a titanate compound having a tunnel crystal structure, wherein the titanate compound has a rate of chlorine ion dissolution of 0.5 ppm to 400 ppm.
    Type: Application
    Filed: July 7, 2021
    Publication date: June 29, 2023
    Applicant: OTSUKA CHEMICAL CO., LTD.
    Inventor: Emiko Daimon
  • Publication number: 20230173745
    Abstract: Provided is a method for producing a modeled object easily producible and capable of effectively increasing mechanical properties in modeling using a three-dimensional printer. The method for producing a modeled object includes the steps of: preparing a resin composition containing inorganic fibers with an average fiber length of 1 ?m to 300 ?m and an average aspect ratio of 3 to 200 and a thermoplastic resin; and modeling an object using the resin composition on a fused deposition modeling-based three-dimensional printer to produce a modeled object, wherein in modeling the object on the fused deposition modeling-based three-dimensional printer, a deposition pitch is less than 0.20 mm and a road width is less than 0.20 mm.
    Type: Application
    Filed: June 17, 2021
    Publication date: June 8, 2023
    Applicant: OTSUKA CHEMICAL CO., LTD.
    Inventors: Takashi Kitajima, Kousuke Inada, Yukio Yonezu
  • Publication number: 20230105406
    Abstract: A rubber composition comprising at least one member selected from the group consisting of compounds represented by the following formulas (1) to (7) and 3-methyl-5-pyrazolone, and a rubber component: wherein the R group is a hydrazide group, an N?-alkylidene hydrazide group, an N-allyl carbamoyl group, a 3-carboxyl acryloyl group, a hydrazine carboxyamino group, a thiocarboxyl group, a thiol group, or a hydrogen atom; R4 is a sulfur atom or an oxygen atom; R5 is a thiol group or a hydroxy group; R6 is a C1-4 alkylene group; R7 is an alkyl group, an aralkyl group, an aryl group, or a heterocyclic group; R8 is a hydrogen atom or an amino group; R9 is a heteroatom; and R10 is a heterocyclic group.
    Type: Application
    Filed: February 26, 2021
    Publication date: April 6, 2023
    Applicant: OTSUKA CHEMICAL CO., LTD.
    Inventors: Shinya SHINOZAKI, Mifuyu UENO
  • Publication number: 20230037643
    Abstract: A peptide is efficiently produced by reacting a carboxyl group of an amino acid or intermediate peptide in which an amino group is protected, with an alkali metal salt or alkaline earth metal salt of an amino acid in which an amino group is not protected, or of an intermediate peptide in which an N-terminal is not protected, is a two-layer solvent composed of water and a hydrophobic organic solvent.
    Type: Application
    Filed: December 23, 2020
    Publication date: February 9, 2023
    Applicant: OTSUKA CHEMICAL CO., LTD.
    Inventor: Pengyu XU
  • Publication number: 20230035012
    Abstract: An object of the present invention is to provide novel crystals. Provided are crystals of 3-hydroxy-N?-(1,3-dimethylbutylidene)-2-naphthoic acid hydrazide having an X-ray powder diffraction pattern comprising a peak of maximum intensity at an angle of diffraction (2?) of 6.9°.
    Type: Application
    Filed: December 18, 2020
    Publication date: February 2, 2023
    Applicant: OTSUKA CHEMICAL CO., LTD.
    Inventors: Eriko SATO, Noriaki SHIINA, Kazuki TSUBOKURA, Mifuyu UENO
  • Publication number: 20230022116
    Abstract: An object of the present invention is to provide novel crystals. Provided are crystals of 3-hydroxy-N?-(1,3-dimethylbutylidene)-2-naphthoic acid hydrazide having an X-ray powder diffraction pattern comprising a peak of maximum intensity at an angle of diffraction (2?) of 6.1±0.2°.
    Type: Application
    Filed: December 18, 2020
    Publication date: January 26, 2023
    Applicant: OTSUKA CHEMICAL CO., LTD.
    Inventors: Eriko SATO, Noriaki SHIINA, Mifuyu UENO
  • Publication number: 20220396594
    Abstract: Provided is a degradation inhibitor that delays the progress of the degradation reaction of 2ccPA and has an excellent stabilization effect by using a carbacyclic phosphatidic acid compound represented by formula (1): wherein R1 represents hydrogen, alkali metal, alkyl, arylalkyl, or aryl; bonds indicated by solid and dotted lines represent single or double bonds; wavy lines represent single bonds; and when the single bond is adjacent to a double bond, the steric configuration is E-configuration, Z-configuration, or any mixture thereof.
    Type: Application
    Filed: December 23, 2020
    Publication date: December 15, 2022
    Applicant: OTSUKA CHEMICAL CO., LTD.
    Inventors: Shin YONEYAMA, Hiroki OKAZAKI
  • Publication number: 20220380675
    Abstract: Provided is a liquid crystal polymer composition having a low coefficient of static friction and a low coefficient of kinetic friction both during sliding between a liquid crystal polymer molded body and a metallic material and during sliding between liquid crystal polymer molded bodies. The liquid crystal polymer composition contains a liquid crystal polymer (A), a polytetrafluoroethylene resin (B), and barium sulfate (C).
    Type: Application
    Filed: December 3, 2020
    Publication date: December 1, 2022
    Applicant: OTSUKA CHEMICAL CO., LTD.
    Inventors: Toshihiro Maruo, Yuuki Takaishi
  • Patent number: 11491759
    Abstract: Provided is a composite laminate having excellent releasability from a mold during a production process and having excellent surface appearance (surface smoothness). A composite laminate 1 including an A layer 2 and a B layer 3, the A layer 2 being provided on one or both sides of the B layer 3, the A layer 2 containing inorganic fibers (a1) with an average fiber length of 1 ?m to 300 ?m and a thermoplastic resin (a2), the B layer 3 containing reinforcing fibers (b1) with an average fiber length of 1 mm or more and a thermoplastic resin (b2).
    Type: Grant
    Filed: November 26, 2018
    Date of Patent: November 8, 2022
    Assignee: OTSUKA CHEMICAL CO., LTD.
    Inventors: Hiroshi Yagi, Kousuke Inada
  • Patent number: 11434351
    Abstract: Provided is a rubber composition containing non-fibrous titanate compound particles and having excellent dispersibility of the titanate compound particles and excellent wet grip performance and wear resistance. A rubber composition containing a rubber component mixed with: non-fibrous titanate compound particles having an average particle diameter of less than 30 ?m and a BET specific surface area of 2 m2/g or more; and silica particles having a BET specific surface area of 50 to 250 m2/g.
    Type: Grant
    Filed: July 9, 2018
    Date of Patent: September 6, 2022
    Assignee: OTSUKA CHEMICAL CO., LTD.
    Inventor: Masato Tani
  • Patent number: 11427538
    Abstract: An organic tellurium compound is disclosed having a versatility that, when used as a living radical polymerization initiator, it is applicable to polymerization of a vinyl monomer in an aqueous vehicle without using any surfactant or dispersant. The organic tellurium compound is represented by a general formula (1), where R1 and R2 each independently represent a hydrogen atom or an alkyl group having 1 to 8 carbon atoms, A represents an alkali metal atom or an alkaline earth metal atom, x=1 when A is monovalent, x=½ when A is divalent, and R3 is represented by a general formula (2), where in the general formula (2) R4 represents a hydrogen atom or an alkyl group having 1 to 8 carbon atoms, R5 and R6 each independently represent an alkylene group having 2 to 8 carbon atoms, and a represents an integer from 0 to 10.
    Type: Grant
    Filed: April 23, 2018
    Date of Patent: August 30, 2022
    Assignees: KYOTO UNIVERSITY, OTSUKA CHEMICAL CO., LTD.
    Inventors: Shigeru Yamago, Osamu Ito