Patents Assigned to Zeon Corporation
  • Binder composition for all-solid-state secondary battery, slurry composition for all-solid-state secondary battery, functional layer for all-solid-state secondary battery, and all-solid-state secondary battery
    Patent number: 11557766
    Abstract: Provided are a binder composition for an all-solid-state secondary battery with which it is possible to obtain an all-solid-state secondary battery that has good battery characteristics and for which processability during all-solid-state secondary battery production is excellent, a slurry composition for an all-solid-state secondary battery that contains this binder composition for an all-solid-state secondary battery, a functional layer for an all-solid-state secondary battery that is formed from this slurry composition for an all-solid-state secondary battery, and an all-solid-state secondary battery that includes this functional layer for an all-solid-state secondary battery. The binder composition for an all-solid-state secondary battery contains a polymer, an unsaturated acid metal salt monomer, and a solvent. The unsaturated acid metal salt monomer includes a divalent metal.
    Type: Grant
    Filed: December 4, 2018
    Date of Patent: January 17, 2023
    Assignee: ZEON CORPORATION
    Inventor: Kouichirou Maeda
  • Binder composition for lithium ion secondary battery electrode-use, slurry composition for lithium ion secondary battery electrode-use, electrode for lithium ion secondary battery-use, and lithium ion secondary battery
    Patent number: 11552297
    Abstract: Provided is a binder composition for lithium ion secondary battery electrode-use that reduces internal resistance of a lithium ion secondary battery while also providing the lithium ion secondary battery with excellent life characteristics. The binder composition contains a copolymer X and a solvent. The copolymer X is obtained from a monomer composition X that contains at least 20.0 mass % and no greater than 75.0 mass % of an ethylenically unsaturated carboxylic acid compound (A) composed of either or both of an ethylenically unsaturated carboxylic acid and an ethylenically unsaturated carboxylic acid salt, and at least 20.0 mass % and no greater than 75.0 mass % of a copolymerizable compound (B) that has an ethylenically unsaturated bond and a solubility of at least 7 g in 100 g of water at 20° C. The copolymer X has a degree of swelling in electrolysis solution of less than 120 mass %.
    Type: Grant
    Filed: June 4, 2015
    Date of Patent: January 10, 2023
    Assignee: ZEON CORPORATION
    Inventors: Kenya Sonobe, Yusuke Adachi, Takuya Kaneda, Yasuhiro Isshiki
  • CYCLOOLEFIN POLYMER, METHOD FOR PRODUCING SAME, AND OPTICAL ELEMENT
    Publication number: 20230002544
    Abstract: Provided are a cycloolefin polymer simultaneously having a high refractive index, a low Abbe number, and low birefringence and also a method of producing this cycloolefin polymer and an optical element in which this cycloolefin polymer is used. The cycloolefin polymer is a polymer, or hydrogenated product thereof, said polymer comprising a structural unit derived from a naphthyl group-containing alicyclic compound (A) represented by following formula (1), in a specific proportion. In formula (1), one of R2a to R5a is a naphthyl group and remaining groups among R2a to R5a and R1a are as defined in the specification.
    Type: Application
    Filed: November 26, 2020
    Publication date: January 5, 2023
    Applicant: ZEON CORPORATION
    Inventor: Hironari SUDEJI
  • SECONDARY BATTERY AND METHOD OF PRODUCING SAME
    Publication number: 20230006262
    Abstract: A secondary battery includes a laminate in which a positive electrode, a separator, and a negative electrode are stacked in stated order. Resistance A per unit area of a central region P that has a similar shape to a shape of a surface Z that is either or both of an affixing surface X of the positive electrode and the separator and an affixing surface Y of the negative electrode and the separator, that has a center at the same position as a center of the surface Z, and that has an area equivalent to 10% of area of the surface Z is larger than resistance B per unit area of a region Q other than the central region P at the surface Z.
    Type: Application
    Filed: December 15, 2020
    Publication date: January 5, 2023
    Applicant: ZEON CORPORATION
    Inventors: Yutaka MARUHASHI, Masuhiro ONISHI
  • BINDER COMPOSITION FOR NON-AQUEOUS SECONDARY BATTERY ELECTRODE, SLURRY COMPOSITION FOR NON-AQUEOUS SECONDARY BATTERY ELECTRODE, ELECTRODE FOR NON-AQUEOUS SECONDARY BATTERY, AND NON-AQUEOUS SECONDARY BATTERY
    Publication number: 20230006210
    Abstract: A binder composition for a non-aqueous secondary battery electrode contains a specific binder component, a plasticizer, and an organic solvent. The binder component includes an insoluble polymer that includes a (meth)acrylic acid ester monomer unit and an ethylenically unsaturated acid monomer unit and a highly soluble polymer that includes, in specific content ratios, a nitrile group-containing monomer unit and either or both of an amide group-containing monomer unit and a (meth)acrylic acid ester monomer unit having an alkyl chain carbon number of not less than 1 and not more than 6.
    Type: Application
    Filed: December 16, 2020
    Publication date: January 5, 2023
    Applicant: ZEON CORPORATION
    Inventors: Yukie ITO, Tsutomu FUJII
  • SECONDARY BATTERY AND METHOD OF PRODUCING SAME
    Publication number: 20230006263
    Abstract: A secondary battery includes a laminate in which a positive electrode, a separator, and a negative electrode are stacked in stated order. When either or both of an affixing surface X of the positive electrode and the separator and an affixing surface Y of the negative electrode and the separator are defined as a surface Z and the length of a connecting side of a positive electrode tab connected to the positive electrode or a negative electrode tab connected to the negative electrode is defined as L, resistance A per unit area of a region P, at the surface Z, that has a rectangular shape having the connecting side and a line segment a distance 0.3L from the connecting side as one pair of opposite sides is larger than resistance B per unit area of a region Q other than the region P at the surface Z.
    Type: Application
    Filed: December 15, 2020
    Publication date: January 5, 2023
    Applicant: ZEON CORPORATION
    Inventors: Yutaka MARUHASHI, Masanobu SATO
  • ELECTROSTATIC IMAGE DEVELOPMENT TONER
    Publication number: 20220413410
    Abstract: Provided is an electrostatic image development toner comprising colored resin particles and an external additive, the colored resin particles containing a binder resin, a colorant, an aromatic vinyl thermoplastic elastomer having a polymerizable unsaturated bond, and a release agent, wherein the release agent is an ester compound having a glycerol skeleton.
    Type: Application
    Filed: September 24, 2020
    Publication date: December 29, 2022
    Applicant: ZEON CORPORATION
    Inventor: Masashi Watanabe
  • HOLLOW PARTICLES, RESIN COMPOSITION AND MOLDED BODY
    Publication number: 20220410111
    Abstract: Provided are hollow particles which have a high void ratio, hardly collapse, and have a reduced amount of volatile compounds. The hollow particles comprising a shell and a hollow portion surrounded by the shell, and having a void ratio of 50% or more and 90% or less, wherein the shell has a thickness of 0.2 ?m or more and 0.9 ?m or less, and the shell contains a polymer derived from a polymerizable monomer for shell, which is composed of 70% by mass or more and 100% by mass or less of a crosslinkable monomer and 0% by mass or more and 30% by mass or less of a non-crosslinkable monomer, and a polar resin selected from the group consisting of polymers containing a repeating unit which contains a hetero atom.
    Type: Application
    Filed: December 2, 2020
    Publication date: December 29, 2022
    Applicant: ZEON CORPORATION
    Inventor: Masashi Watanabe
  • FUNCTIONAL LAYER FOR ELECTROCHEMICAL DEVICE AND METHOD FOR MANUFACTURING THE SAME, SEPARATOR WITH FUNCTIONAL LAYER FOR ELECTROCHEMICAL DEVICE AND METHOD FOR MANUFACTURING THE SAME, AND ELECTROCHEMICAL DEVICE AND METHOD FOR MANUFACTURING THE SAME
    Publication number: 20220416362
    Abstract: Disclosed is a functional layer for an electrochemical device that comprises inorganic particles and a particulate polymer, wherein the functional layer comprises a particle-detached portion, in a plan view of a surface of the functional layer, a ratio of an area of the particle-detached portion in a total area of the particulate polymer and the particle-detached portion is 0.1% or more and 40.0% or less, and a volume-average particle diameter of the particulate polymer is larger than a thickness of an inorganic particle layer comprising the inorganic particles.
    Type: Application
    Filed: October 14, 2020
    Publication date: December 29, 2022
    Applicant: ZEON CORPORATION
    Inventor: Hiroyuki TAGUCHI
  • NITRILE-GROUP-CONTAINING COPOLYMER RUBBER
    Publication number: 20220411555
    Abstract: A nitrile-group-containing copolymer rubber, including 15% by weight or more and less than 28% by weight of ?,?-ethylenically unsaturated nitrile monomer units (a), 10 to 50% by weight of ?,?-ethylenically unsaturated monocarboxylic acid ester monomer units (b), 22 to 74% by weight of conjugated diene monomer units (c), and 1 to 10% by weight of carboxyl group-containing monomer units (d) and having an iodine value of 120 or less, wherein the conjugated diene monomer units (c) are at least partially hydrogenated, and the proportion of isoprene units in the conjugated diene monomer units (c) is 5% by weight or more and less than 33% by weight.
    Type: Application
    Filed: October 28, 2020
    Publication date: December 29, 2022
    Applicant: ZEON CORPORATION
    Inventors: Yasuaki WATANABE, Kunihiro GOTO
  • Crosslinkable composition and crosslinked product
    Patent number: 11535696
    Abstract: A crosslinkable composition containing: a liquid monocyclic olefin ring-opened polymer (A) having a reactive group at a polymer chain end thereof and a weight-average molecular weight (Mw) of 1,000 to 50,000; and a crosslinkable compound (B) having, in the molecule, two or more functional groups reactive with the reactive group at the polymer chain end of the monocyclic olefin ring-opened polymer (A).
    Type: Grant
    Filed: October 25, 2017
    Date of Patent: December 27, 2022
    Assignee: ZEON CORPORATION
    Inventors: Yasuo Tsunogae, Shingo Okuno, Hiroyuki Nitadori
  • PASTE FOR SECONDARY BATTERY, SLURRY FOR SECONDARY BATTERY POSITIVE ELECTRODE, POSITIVE ELECTRODE FOR SECONDARY BATTERY, SECONDARY BATTERY, AND METHOD OF PRODUCING PASTE FOR SECONDARY BATTERY
    Publication number: 20220407076
    Abstract: Provided are a paste for a secondary battery, and method of producing the same, with which it is possible to produce an electrode that can reduce internal resistance of a secondary battery and that can cause the secondary battery to display excellent cycle characteristics. The paste for a secondary battery contains a conductive additive, a polymer, and a dispersion medium. The conductive additive includes one or more carbon nanotubes having a surface base content of not less than 0.01 mmol/g and not more than 0.10 mmol/g and a ratio of surface acid content relative to the surface base content of not less than 0.1 and not more than 1.0.
    Type: Application
    Filed: October 23, 2020
    Publication date: December 22, 2022
    Applicant: ZEON CORPORATION
    Inventors: Junpei MOTOKI, Mayumi FUKUMINE
  • Conjugated-diene-based rubber
    Patent number: 11530287
    Abstract: A conjugated diene-based rubber including a polymer block (A) containing isoprene monomer unit as the main component and a polymer block (B) containing 1,3-butadiene monomer unit as the main component, wherein at least one of the polymer block (A) and the polymer block (B) contains a unit of a vinyl compound having a functional group interactive with silica, the polymer block (A) has a weight average molecular weight (Mw) in the range of 1,000 to 30,000, and the entire conjugated diene-based rubber has a weight average molecular weight (Mw) in the range of 50,000 to 5,000,000.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: December 20, 2022
    Assignees: ZEON CORPORATION, SUMITOMO CHEMICAL COMPANY, LIMITED, ZS ELASTOMERS CO., LTD.
    Inventors: Takuro Sakurai, Takashi Iizuka, Mana Fujii, Hisakatsu Hama
  • Binder composition for nonaqueous secondary batteries and slurry composition for nonaqueous secondary batteries
    Patent number: 11532817
    Abstract: A binder composition for a non-aqueous secondary battery including: a water-insoluble polymer and a water-soluble polymer, wherein the water-insoluble polymer contains 70% by weight or more and 100% by weight or less of an aliphatic conjugated diene monomer unit, and the water-soluble polymer has a carboxy group and a hydroxy group. The water-soluble polymer preferably contains a carboxy group-containing monomer unit and a hydroxy group-containing monomer unit. Also provided are a slurry composition for a non-aqueous secondary battery, including the binder composition, an electrode, a separator, a secondary battery and methods for producing the same.
    Type: Grant
    Filed: March 5, 2018
    Date of Patent: December 20, 2022
    Assignee: ZEON CORPORATION
    Inventors: Norikazu Yamamoto, Hidetake Ishii, Yusaku Matsuo
  • Foam
    Patent number: 11525046
    Abstract: A foam containing a nitrile group-containing conjugated diene copolymer and a urethane polymer, wherein relative to 100 wt % of the sum of the nitrile group-containing conjugated diene copolymer and the urethane polymer, the nitrile group-containing conjugated diene copolymer is present in an amount of less than 90 wt % and the urethane polymer is present in an amount of more than 10 wt %, the nitrile group-containing conjugated diene copolymer contains ethylenically unsaturated nitrile monomer units in an amount of more than 31 wt %, the foam has a density of 0.08 to 0.30 g/cm3, and in observation of an arbitrary cross section of the foam, air bubble cross sections present in the cross section have an average diameter of 350 ?m or less, and the number of air bubble cross sections with a diameter of 0.6 mm or more present in the cross section is 0.062 per mm2 or less.
    Type: Grant
    Filed: December 10, 2018
    Date of Patent: December 13, 2022
    Assignee: ZEON CORPORATION
    Inventors: Tomoya Taniyama, Takashi Iga
  • BINDER COMPOSITION FOR ALL-SOLID-STATE SECONDARY BATTERY, SLURRY COMPOSITION FOR ALL-SOLID-STATE SECONDARY BATTERY, SOLID ELECTROLYTE-CONTAINING LAYER, AND ALL-SOLID-STATE SECONDARY BATTERY
    Publication number: 20220393175
    Abstract: Provided is a binder composition for an all-solid-state secondary battery that can produce a slurry composition for an all-solid-state secondary battery having excellent dispersibility and preservation stability and that can cause a solid electrolyte-containing layer to display excellent ion conductivity. The binder composition contains a polymer, ions of a metal belonging to group 1 or group 2 of the periodic table, and a solvent. The solvent includes an organic solvent having a carbon number of 8 or more, and the content of the ions of the metal is not less than 5 mass ppm and not more than 5,000 mass ppm relative to the polymer.
    Type: Application
    Filed: October 14, 2020
    Publication date: December 8, 2022
    Applicant: ZEON CORPORATION
    Inventor: Yusaku MATSUO
  • CARBON NANOTUBE WATER DISPERSION, CONDUCTIVE FILM, ELECTRODE, AND SOLAR CELL
    Publication number: 20220389239
    Abstract: Provided is a carbon nanotube water dispersion with which it is possible to form a conductive film that has excellent film strength and can cause a solar cell to display excellent conversion efficiency and reliability. The carbon nanotube water dispersion is for an electrode of a solar cell that includes an electrolyte solution containing a polar aprotic substance as a solvent and contains carbon nanotubes, a dispersant, a thickener, and water. The dispersant is soluble in the solvent and the thickener is insoluble in the solvent.
    Type: Application
    Filed: November 16, 2020
    Publication date: December 8, 2022
    Applicant: ZEON CORPORATION
    Inventor: Ryuji OOTA
  • ACRYLIC RUBBER EXCELLENT IN WATER RESISTANCE
    Publication number: 20220389141
    Abstract: An acrylic rubber including: a polymer composition of: 70 to 99.9% by weight of a bonding unit derived from at least one (meth) acrylic acid ester selected from (meth) acrylic acid alkyl ester and (meth) acrylic acid alkoxyalkyl ester; 0.1 to 10% by weight of a bonding unit derived from a monomer containing a reactive group; and 0 to 20% by weight of a bonding unit derived from other monomer, wherein ash content is 0.15% by weight or less, total amount of sodium and sulfur in the ash is 60% by weight or more, a ratio of sodium to sulfur by weight ratio is in the range of 0.5 to 2.5, ratio of Z-average molecular weight to weight average molecular weight is 1.3 or more, and weight average molecular weight is in the range of 1,000,000 to 5,000,000.
    Type: Application
    Filed: June 5, 2020
    Publication date: December 8, 2022
    Applicant: ZEON CORPORATION
    Inventors: Hirofumi MASUDA, Nobuhiro TSUNEKUNI
  • BINDER COMPOSITION FOR SECONDARY BATTERY, SLURRY COMPOSITION FOR SECONDARY BATTERY, FUNCTIONAL LAYER FOR SECONDARY BATTERY, AND SECONDARY BATTERY
    Publication number: 20220384815
    Abstract: Provided is a binder composition that can produce a slurry composition having excellent preservation stability and that can cause a functional layer to display excellent adhesiveness. The binder composition contains a polymer and a solvent. The polymer includes a (meth)acrylic acid ester monomer unit including an aromatic hydrocarbon ring in a proportion of not less than 5 mass % and not more than 45 mass % and includes a structural unit indicated by formula (I), shown below, in a proportion of not less than 50 mass % and not more than 90 mass %. In formula (I), R1 represents a hydrocarbon group having a carbon number of 4 or more that does not include an aromatic hydrocarbon ring and R2 represents a hydrogen atom, a methyl group, or —CH2—C(?O)—O—R1. In a case in which more than one 10 is present in formula (I), each R1 may be the same or different.
    Type: Application
    Filed: October 5, 2020
    Publication date: December 1, 2022
    Applicant: ZEON CORPORATION
    Inventor: Yusaku MATSUO
  • ACRYLIC RUBBER, ACRYLIC RUBBER COMPOSITION, AND CROSSLINKED RUBBER
    Publication number: 20220380501
    Abstract: An acrylic rubber includes 20 to 35% by weight of ethyl methacrylate units (a), 0 to 20% by weight of ethyl acrylate units (b), 50 to 75% by weight of n-butyl acrylate units (c), and 0.5 to 4% by weight of carboxyl group-containing monomer units (d).
    Type: Application
    Filed: June 24, 2020
    Publication date: December 1, 2022
    Applicant: ZEON CORPORATION
    Inventor: Fumiaki BANDO