Patents Assigned to Kuraray Co., Ltd.
  • METAL PARTICLE COMPOSITION, METHOD FOR PRODUCING METAL PARTICLE COMPOSITION, AND PASTE
    Publication number: 20230060171
    Abstract: To provide a metal particle composition having excellent oxidation resistance, which does not require a transition metal catalyst and can be applied to existing metal particles, a method for producing the metal particle composition, and a paste. The metal particle composition contains, with respect to 100 parts by mass of metal particles, 0.1 to 5 parts by mass of a compound (A) having a structure represented by the following general formula (I): in which R1 and R2 each independently represent a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, an alkenyl group having 2 to 6 carbon atoms, an aryl group, or an aralkyl group, R3 and R4 each independently represent a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, an alkoxy group, an alkenyl group having 2 to 6 carbon atoms, an alkenyloxy group, an aryl group, or an aralkyl group.
    Type: Application
    Filed: June 30, 2021
    Publication date: March 2, 2023
    Applicant: KURARAY CO., LTD.
    Inventors: Yuki NISHIJIMA, Daiki NOGUCHI, Takashi FUKUMOTO
  • Heavy-duty tire rubber compositions and tires
    Patent number: 11590799
    Abstract: The invention provides a heavy-duty tire rubber composition excellent in wet grip performance and steering stability, and a tire tread, a bead filler, a tire belt and a heavy-duty tire which each partially include the composition. The heavy-duty tire rubber composition includes 100 parts by mass of a solid rubber (A), 0.1 to 50 parts by mass of a modified liquid diene rubber (B) having a functional group derived from a silane compound with a specific structure, and 20 to 200 parts by mass of a filler (C), the modified liquid diene rubber (B) satisfying the following (i) and (ii): (i) the weight average molecular weight (Mw) is not less than 1,000 and not more than 120,000, and (ii) the vinyl content is not less than 30 mol % and less than 70 mol %.
    Type: Grant
    Filed: August 29, 2018
    Date of Patent: February 28, 2023
    Assignee: KURARAY CO., LTD.
    Inventors: Daisuke Koda, Hiroshi Kanbara
  • LIQUID CRYSTAL POLYESTER FIBERS AND METHOD FOR PRODUCING SAME
    Publication number: 20230055144
    Abstract: Provided is a liquid crystal polyester fiber in which gas generation from the liquid crystal polyester fiber can be suppressed when being heated. The liquid crystal polyester fiber has a total amount of carboxy end groups (total CEG amount) of 5.0 mEq/kg or less and a tenacity of 18 cN/dtex or higher. For example, the liquid crystal polyester fiber may have an initial elastic modulus variation of 3.0% or less. The liquid crystal polyester fiber may contain carboxy end groups as carboxyphenyl terminus at a CEG amount of 4.0 mEq/kg or less.
    Type: Application
    Filed: September 28, 2022
    Publication date: February 23, 2023
    Applicant: KURARAY CO., LTD.
    Inventors: Keiichi IKEHATA, Yukihiro TERAMOTO, Junya IDE
  • LIGHT-EMITTING DISPLAY DEVICE, AND A LIGHT-BLOCKING LAYER-EQUIPPED FIBER SHEET FOR USE IN LIGHT-EMITTING DISPLAY DEVICE
    Publication number: 20230053585
    Abstract: A light-emitting display device includes: a light-emitting member; and a light-blocking layer-equipped fiber sheet that covers a light-emitting surface of the light-emitting member. The light-blocking layer-equipped fiber sheet includes a fiber sheet, and a light-blocking layer that is partially printed on at least one surface of the fiber sheet. The surface of the fiber sheet on which the light-blocking layer is formed has an arithmetic mean height Sa of 3 to 20 ?m, as measured based on ISO 25178, and the fiber sheet has an apparent density of 0.5 g/cm3 or more.
    Type: Application
    Filed: December 16, 2020
    Publication date: February 23, 2023
    Applicant: KURARAY CO., LTD.
    Inventors: Tatsuya Daimon, Toshiyuki Ito, Daisuke Eguchi
  • Binder composition for non-aqueous electrolyte batteries, and binder aqueous solution for non-aqueous electrolyte batteries, slurry composition for non-aqueous electrolyte batteries, electrode for non-aqueous electrolyte batteries and non aqueous electrolyte battery each utilizing same
    Patent number: 11581543
    Abstract: The present invention relates to a binder composition for a non-aqueous electrolyte battery, which is characterized by containing (A) polyvinyl alcohol, (B) at least one selected from a copolymer of vinyl alcohol and ethylenically unsaturated carboxylic acid and a neutralized salt of the copolymer and (C) at least one selected from an amino acid, a carboxylic acid-containing polymer and a polyamine; and a binder aqueous solution for a non-aqueous electrolyte battery, a slurry composition for a non-aqueous electrolyte battery, an electrode for a non-aqueous electrolyte battery, and a non-aqueous electrolyte battery, each containing the binder composition; and others.
    Type: Grant
    Filed: May 25, 2018
    Date of Patent: February 14, 2023
    Assignee: Kuraray Co., Ltd.
    Inventors: Yuki Ohta, Hideharu Iwasaki
  • CARBONACEOUS MATERIAL, METHOD FOR PRODUCING SAME, ELECTRODE ACTIVE MATERIAL FOR ELECTRIC DOUBLE LAYER CAPACITORS, ELECTRODE FOR ELECTRIC DOUBLE LAYER CAPACITORS, AND ELECTRIC DOUBLE LAYER CAPACITOR
    Publication number: 20230043072
    Abstract: The present invention relates to a carbonaceous material having a silicon element content of less than 200 ppm, a powder conductivity of 10.0 to 22.0 S/cm, a total amount of surface functional groups of 0.22 to 0.36 meq/g, and a pore volume of 0.10 to 0.20 cm3/g in terms of pores having a pore size of not less than 4 nm as measured by a BJH method.
    Type: Application
    Filed: December 15, 2020
    Publication date: February 9, 2023
    Applicant: KURARAY CO., LTD.
    Inventors: Minoru MATSUSHITA, Mitsunori HITOMI, Shushi NISHIMURA, Hiroyuki NISHINAMI, Takayuki YAMADA
  • SEPARATOR FOR ELECTROCHEMICAL ELEMENTS
    Publication number: 20230044329
    Abstract: The present invention relates to a separator for electrochemical elements, the separator comprising synthetic fibers and beaten cellulose fibers, wherein the beaten cellulose fibers have a Canadian standard freeness measured in accordance with JIS P 8121 of 50 ml or more and 500 ml or less, and in a fiber diameter distribution histogram of the beaten cellulose fibers, (1) the fibers have a maximum frequency peak in a range of 50 ?m or less, and (2) a ratio of the fibers having a fiber diameter of 20 ?m or less is 55% or more.
    Type: Application
    Filed: November 16, 2020
    Publication date: February 9, 2023
    Applicant: KURARAY CO., LTD.
    Inventors: Toshimichi KUSUNOKI, Tomohiro HAYAKAWA, Hiroyuki KAWAI, Jun ARAMAKI
  • PLASTIC SCINTILLATING FIBER AND ITS MANUFACTURING METHOD
    Publication number: 20230040697
    Abstract: A plastic scintillating fiber according to an aspect of the present invention includes: an outermost peripheral layer containing a fluorescent substance that emits scintillation light when it is irradiated with at least one of neutron radiation and heavy-particle radiation; a core disposed inside the outermost peripheral layer and containing at least one type of fluorescent substance that absorbs the scintillation light and wavelength-converts the absorbed light into light having a wavelength longer than that of the absorbed light; and a cladding layer covering an outer peripheral surface of the core and having a refractive index lower than that of the core. A wavelength shifting fiber including the core and the cladding layer, and the outermost peripheral layer covering an outer peripheral surface of the wavelength shifting fiber are integrally formed.
    Type: Application
    Filed: October 27, 2020
    Publication date: February 9, 2023
    Applicant: KURARAY CO., LTD.
    Inventors: Osamu SHINJI, Katsuhiro FUJITA, Minoru SONOBE
  • LEATHER-LIKE SHEET
    Publication number: 20230033018
    Abstract: A leather-like sheet includes: a fiber base material; an intermediate resin layer stacked on one surface of the fiber base material; and a surface resin layer stacked on the intermediate resin layer. The surface resin layer contains a polyether-based polyurethane and spherical fine particles having a heat resistance at 200° C., and has a content ratio of the spherical fine particles of 5 to 40 mass %. The spherical fine particles have a specific heat of 0.95 kJ/(kg·K) or more, a particle size D50 (median diameter) at a cumulative distribution of 50 vol %, of 2.5 to 10 ?m, and a particle size D10 at a cumulative distribution of 10 vol % of the spherical fine particles which satisfies a condition that a particle size dispersity D50/D10?3.
    Type: Application
    Filed: December 3, 2020
    Publication date: February 2, 2023
    Applicant: KURARAY CO., LTD.
    Inventor: Masato WARITA
  • Co-injection molded multilayer structure and method for producing same
    Patent number: 11565511
    Abstract: There is provided a co-injection molded multilayer structure comprising a barrier layer and outer layers laminated to contact with the barrier layer on its both sides, wherein the barrier layer is made of a resin composition (X) comprising an ethylene-vinyl alcohol copolymer (A) and an alkali metal salt (B) of a higher fatty acid, having a melting point of 250° C. or lower; the ethylene-vinyl alcohol copolymer (A) has an ethylene unit content of 20 to 60 mol % and a saponification degree of 90% or more, and a content of the alkali metal salt (B) in the barrier layer is 50 to 1500 ppm in terms of metal atoms; and the outer layers are made of a resin composition (Y) comprising an unmodified high-density polyethylene (F) and a maleic anhydride-modified polyethylene (G), and a maleic anhydride modification rate relative to the whole resin composition (Y) is 0.005 to 0.1 wt %.
    Type: Grant
    Filed: June 4, 2018
    Date of Patent: January 31, 2023
    Assignee: KURARAY CO., LTD.
    Inventors: Makoto Suzuki, Didier Houssier
  • Thermoplastic elastomer composition
    Patent number: 11566129
    Abstract: A thermoplastic elastomer composition possessing a good combination of elastic recovery, tear strength at 25° C., stress relaxation and reduced (improved) anisotropy, which is based on a hydrogenated block copolymer (A), a thermoplastic resin (B), a rubber softener (C) and a polyolefin elastomer (D), of specified types and proportions, and which is suitable for use in a variety of film and sheet applications.
    Type: Grant
    Filed: October 30, 2020
    Date of Patent: January 31, 2023
    Assignee: KURARAY CO., LTD.
    Inventors: Shinya Oshita, Heith Foster
  • POLYAMIDE RESIN COMPOSITION AND MOLDED OBJECT THEREOF
    Publication number: 20230027023
    Abstract: Provided are a polyamide resin composition containing 100 parts by mass of a specific polyamide (A), 45 to 120 parts by mass of an inorganic fibrous reinforcing material (B), 25 to 40 parts by mass of at least one phosphinate salt (C) represented by a specific formula, and 2 to 15 parts by mass of a phosphite salt (D), the phosphinate salt (C) and the phosphite salt (D) being contained at a specific ratio, and a molded object of the polyamide resin composition.
    Type: Application
    Filed: November 25, 2020
    Publication date: January 26, 2023
    Applicant: KURARAY CO., LTD.
    Inventors: Naoto SUGAI, Takaharu SHIGEMATSU
  • RESIN COMPOSITION AND MOLDED BODY
    Publication number: 20230025461
    Abstract: A resin composition containing an ethylene-vinyl acetate copolymer (I) and a hydrogenated block copolymer (II), wherein the hydrogenated block copolymer (II) is a hydrogenated product of a block copolymer (P) containing a polymer block (A) containing a structural unit derived from an aromatic vinyl compound and a polymer block (B) containing 1 to 100% by mass of a structural unit (b1) derived from farnesene and 99 to 0% by mass of a structural unit (b2) derived from a conjugated diene other than farnesene, wherein the hydrogenation rate of carbon-carbon double bonds in the structural unit derived from a conjugated diene in the block copolymer (P) is 70 mol % or more, and in the resin composition, the content of the ethylene-vinyl acetate copolymer (I) is 40 to 95% by mass and the content of the hydrogenated block copolymer (II) is 5 to 60% by mass.
    Type: Application
    Filed: February 25, 2021
    Publication date: January 26, 2023
    Applicant: KURARAY CO., LTD.
    Inventors: Daisuke KONISHI, Hiromitsu SASAKI, Takumi HASEGAWA, Kazumasa KUSUDO
  • Multilayer Structure and Method for Producing Same, Packaging Material and Vacuum Insulator Including Same, and Protective Sheet for Electronic Device
    Publication number: 20230025201
    Abstract: The present disclosure provides packaging materials and products including such as a multilayer structure comprising a base (X), a layer (Y), and a layer (Z), in which the layer (Y) and the layer (Z) are adjacently stacked in at least one pair of the layer (Y) and the layer (Z).
    Type: Application
    Filed: December 9, 2020
    Publication date: January 26, 2023
    Applicant: KURARAY CO., LTD.
    Inventors: Shuhei Kuzume, Tatsuya Oshita
  • Ballast Water Treatment Agent, and Ballast Water Treatment System and Ballast Water Treatment Method Each Using Same
    Publication number: 20230026382
    Abstract: The present invention relates to a ballast water treatment pack comprising: a chlorine-based sterilizing agent; and a wrapper formed of a water-soluble film or a water-soluble fiber entangled body for wrapping the chlorine-based sterilizing agent.
    Type: Application
    Filed: December 16, 2020
    Publication date: January 26, 2023
    Applicant: KURARAY CO., LTD.
    Inventor: Yasuhiro Tajima
  • MERCURY ADSORBENT AND METHOD FOR PRODUCING SAME
    Publication number: 20230026065
    Abstract: Provided is a mercury adsorbent that can efficiently adsorb and remove mercury and/or a mercury compound contained in a liquid hydrocarbon and can suppress corrosive action even when used for a long time. The mercury adsorbent comprises an activated carbon including a mineral acid supported thereon, the activated carbon having a specific surface area of 1000 m2/g or larger and a volume of micropores of 80 cm3/g or larger, each of the micropores having a pore radius of 8 ? or smaller, and the mercury adsorbent has a moisture content of from 0.1 to 3 wt %.
    Type: Application
    Filed: September 15, 2022
    Publication date: January 26, 2023
    Applicant: KURARAY CO., LTD.
    Inventors: Kiyoto OTSUKA, Shuichi ISHIDA, Hideharu IWASAKI
  • IONOMER RESIN, RESIN SHEET, AND LAMINATED GLASS
    Publication number: 20230025550
    Abstract: The present invention relates to an ionomer resin, comprising: a (meth)acrylic acid unit (A); a neutralized (meth)acrylic acid unit (B); and an ethylene unit (C), wherein the total amount of the unit (A) and the unit (B) is from 6 to 10 mol % based on the entire monomeric units constituting the ionomer resin, and wherein the amount of a salt composed of a strong acid and a strong base in the ionomer resin is from 1 to 400 mg/kg.
    Type: Application
    Filed: December 7, 2020
    Publication date: January 26, 2023
    Applicant: KURARAY CO., LTD.
    Inventors: Tomoka SHIROUCHI, Kenta TAKEMOTO, Takuro NIIMURA, Atsuhiro NAKAHARA, Yoshiaki ASANUMA
  • Molded body formed from curable composition
    Patent number: 11560335
    Abstract: To provide a molded body which has high strength, high ductility, and excellent dimensional stability while maintaining incombustibility and fire resistance. A molded body formed from a curable composition containing (A) at least one aluminosilicate source, (B) an alkali metal hydroxide, (C) a calcium ion source, and (D) an alkali resistant fiber, wherein the aluminosilicate source (A) has an SiO2 content of 50% by mass or more based on a total mass of the aluminosilicate source (A), an amorphous ratio of 50% by mass or higher, and an average particle diameter of 50 ?m or smaller, and comprises an aluminosilicate source having an average particle diameter of 10 ?m or smaller in an amount of 30% by mass or more based on the total mass of the aluminosilicate source (A).
    Type: Grant
    Filed: December 18, 2018
    Date of Patent: January 24, 2023
    Assignee: KURARAY CO., LTD.
    Inventors: Shinya Inada, Soichiro Ikehata, Saburo Hada
  • Resin composition, production method for resin composition, and molded body using resin composition
    Patent number: 11560464
    Abstract: There is provided a resin composition, comprising an ethylene-vinyl alcohol copolymer and a nonionic surfactant, wherein the ethylene-vinyl alcohol copolymer has an ethylene unit content of 15 to 60 mol %, and a saponification degree of 90 mol % or more; the ethylene-vinyl alcohol copolymer is contained as a major component; and the nonionic surfactant is contained at 3 to 400 ppm. The resin composition is produced by melt-kneading a mixture comprising the nonionic surfactant, water and the ethylene-vinyl alcohol copolymer. By using the resin composition thus produced, a discharge amount during melt molding can be increased and a molded article with an excellent appearance can be provided.
    Type: Grant
    Filed: March 14, 2018
    Date of Patent: January 24, 2023
    Assignee: KURARAY CO., LTD.
    Inventors: Eriko Katahira, Hiroyuki Shimo, Kenji Nakano
  • Multilayer structure and use of same
    Patent number: 11559972
    Abstract: A multilayer structure includes a layer of a resin composition containing an ethylene-vinyl alcohol copolymer and a thermoplastic elastomer, wherein a mass ratio of the ethylene-vinyl alcohol copolymer to the thermoplastic elastomer is from 65/35 to 95/5 and the layer of the resin composition has one surface directly adjacent to a layer of polyolefin with no polar functional group. A multilayer structure is thus provided that is excellent in gas barrier properties, transparency, and flexibility and also has good delamination properties between the layer of the resin composition and the layer of the polyolefin with no polar functional group.
    Type: Grant
    Filed: November 1, 2017
    Date of Patent: January 24, 2023
    Assignee: KURARAY, CO., LTD.
    Inventors: Makoto Suzuki, Naoki Kawakami