Patents Assigned to Zeon Corporation
  • Publication number: 20210111408
    Abstract: A binder composition for a non-aqueous secondary battery electrode contains a particulate polymer A and a particulate polymer B. The particulate polymer A is a block copolymer including an aromatic vinyl monomer unit and an aliphatic conjugated diene monomer unit having a carbon number of 4 or more. The particulate polymer B is a random copolymer including a (meth)acrylic acid ester monomer unit in a proportion of not less than 20.0 mass % and not more than 80.0 mass %.
    Type: Application
    Filed: October 19, 2017
    Publication date: April 15, 2021
    Applicant: ZEON CORPORATION
    Inventors: Yusaku MATSUO, Norikazu YAMAMOTO
  • Publication number: 20210109268
    Abstract: A polarizing film comprises a polarizer layer, a resin layer, an adhesive layer, and a hard coat layer in this order, wherein the resin layer is formed of a resin having a storage elastic modulus, measured as a film having a thickness of 1 mm, of 10 MPa or more and 1000 MPa or less, and the adhesive layer is in direct contact with the hard coat layer.
    Type: Application
    Filed: October 18, 2018
    Publication date: April 15, 2021
    Applicant: ZEON CORPORATION
    Inventor: Takamichi INOMATA
  • Patent number: 10978991
    Abstract: A panel connected body comprises: a plurality of thin panels arranged in a matrix of m rows and n columns; and a connection portion connecting the plurality of thin panels in a row direction and a column direction, wherein the panel connected body is foldable between adjacent thin panels of the plurality of thin panels. The connection portion has, alternately in the column direction, a first type row satisfying relationships D1?2L and Dy?Dy?1+2L and a second type row satisfying relationships Dn?2L and Dy?Dy+1+2L, where Dy is a length of the connection portion between thin panels P adjacent in the column direction at a yth column, and L is a thickness of each of the plurality of thin panels in a vertical direction.
    Type: Grant
    Filed: May 12, 2017
    Date of Patent: April 13, 2021
    Assignee: ZEON CORPORATION
    Inventors: Yuki Hayashi, Kiyoshige Kojima, Masayoshi Yoshida
  • Patent number: 10968150
    Abstract: Provided is a method for producing 1,3-butadiene that enables 1,3-butadiene to be obtained in a high yield while preventing abnormal reaction of a fraction containing vinylacetylene in high concentration. The method for producing 1,3-butadiene is a method for producing 1,3-butadiene from a fraction produced in separation and recovery of 1,3-butadiene from a C4 hydrocarbon mixture that includes: adding a diluent to a high VA fraction containing vinylacetylene to produce a diluted fraction; and subjecting the diluted fraction to hydrogenation treatment to produce 1,3-butadiene. Substantially only a low VA fraction is used as the diluent. The low VA fraction is a fraction that is produced in separation and recovery of 1,3-butadiene from the C4 hydrocarbon mixture and has a lower vinylacetylene concentration than the high VA fraction.
    Type: Grant
    Filed: March 27, 2017
    Date of Patent: April 6, 2021
    Assignee: ZEON CORPORATION
    Inventor: Yoshihide Yachi
  • Patent number: 10968287
    Abstract: A method for producing a hydrogenated conjugated diene polymer latex includes: a hydrogenation step of dissolving or dispersing a hydrogenation catalyst containing a platinum group element in a latex of a conjugated diene polymer to hydrogenate a carbon-carbon unsaturated bond in the polymer; an insoluble complex formation step of complexing the platinum group element with a complexing agent to form an insoluble complex; and an insoluble complex removing step of continuously feeding the latex which has undergone the insoluble complex formation step to a centrifuge machine and continuously performing a centrifugation operation to continuously remove the insoluble complex from the latex and continuously discharge the insoluble complex out of the centrifuge machine. In the insoluble complex removal step the feed rate of the latex to the centrifuge machine is adjusted to 0.5 to 15 m3/hour, and the centrifugal force in the centrifugation operation is adjusted to 200 to 10,000 G.
    Type: Grant
    Filed: January 18, 2018
    Date of Patent: April 6, 2021
    Assignee: ZEON CORPORATION
    Inventors: Kentaro Ono, Chikara Katano, Yasuaki Watanabe
  • Patent number: 10968335
    Abstract: A cross-linked rubber obtained by crosslinking a rubber composition containing a conjugated diene rubber and an inorganic filler, wherein when a loss tangent value of a non-interface component forming, of the cross-linked rubber ingredient, a portion other than an interface with the inorganic filler is represented as L(m) and a loss tangent value of an interface component forming, of the cross-linked rubber ingredient, an interface portion with the inorganic filler is represented as L(i), each loss tangent value being measured using an atomic force microscope in a state in which sinusoidal vibrations of 5 kHz are applied to the cross-linked rubber, the cross-linked rubber has a ratio L(i)/L(m) of 0.85 or less.
    Type: Grant
    Filed: August 21, 2017
    Date of Patent: April 6, 2021
    Assignee: ZEON CORPORATION
    Inventors: Eijun Ueda, Misako Asada, Hidenori Yamagishi
  • Publication number: 20210098789
    Abstract: Provided is a binder composition capable of forming a functional layer that can both inhibit post-cycling swelling of a secondary battery and increase charge carrier acceptance of the secondary battery at low temperatures. The binder composition contains a first polymer, a second polymer, and a solvent. The first polymer is a block copolymer including a block region formed of an aromatic vinyl monomer unit and a block region formed of an aliphatic conjugated diene monomer unit and/or a hydrogenated aliphatic conjugated diene monomer unit. The second polymer is a random copolymer including a 1,3-pentadiene unit and/or a hydrogenated 1,3-pentadiene unit.
    Type: Application
    Filed: April 2, 2019
    Publication date: April 1, 2021
    Applicant: ZEON CORPORATION
    Inventors: Hidetake ISHII, Norikazu YAMAMOTO
  • Publication number: 20210099107
    Abstract: The present disclosure aims to provide a power wiring network apparatus capable of constructing a highly portable power wiring network, without the need to maintain infrastructure. A power wiring network apparatus includes a wiring member, including first connectors and a conductive portion electrically connecting the first connectors to enable power supply, and circuit elements each including a second connector mechanically and electrically attachable to any first connector. The circuit elements include energy harvesting elements capable of outputting, from the second connector, power generated by energy harvesting and load elements capable of consuming power inputted from the second connector. At least some energy harvesting elements and load elements are capable of power line data communication via a power line including the first connectors and conductive portion.
    Type: Application
    Filed: March 15, 2019
    Publication date: April 1, 2021
    Applicant: ZEON CORPORATION
    Inventors: Masayoshi YOSHIDA, Naomi SHIGA
  • Patent number: 10964947
    Abstract: Provided is a binder composition for a secondary battery electrode that, when used in production of a slurry composition for a secondary battery electrode, enables favorable dispersion of an electrode active material and a conductive material in high concentration while ensuring coatability. The binder composition for a secondary battery electrode contains a binder. The binder includes a copolymer that includes an alkylene structural unit and a nitrile group-containing monomer unit, and that has a Mooney viscosity (ML1+4, 100° C.) of at least 50 and not more than 200.
    Type: Grant
    Filed: June 28, 2016
    Date of Patent: March 30, 2021
    Assignee: ZEON CORPORATION
    Inventor: Naoki Takahashi
  • Patent number: 10962690
    Abstract: An optical film, wherein a photoelastic coefficient thereof is 1.5×10?13 (dyn/cm2)?1 or less, an in-plane retardation Re(560) thereof at a wavelength of 560 nm is 1.0 nm or less, an absolute value of a thickness-direction retardation Rth(560) thereof at a wavelength of 560 nm |Rth(560)| is 1.0 nm or less, a change of a ratio Re(560)/d that is a ratio of the in-plane retardation Re(560) at a wavelength of 560 nm relative to a thickness d, the change being a result of storage at a temperature of 60° C. and a humidity of 90% for 4 hours, is 0.5×10?5 or less, and a change of a ratio Rth(560)/d that is a ratio of the thickness-direction retardation Rth(560) at a wavelength of 560 nm relative to the thickness d, the change being a result of storage at a temperature of 60° C. and a humidity of 90% for 4 hours, is 0.5×10?5 or less.
    Type: Grant
    Filed: September 5, 2017
    Date of Patent: March 30, 2021
    Assignee: ZEON CORPORATION
    Inventor: Yasuhide Fujino
  • Patent number: 10961548
    Abstract: Mutations involving amino acid substitution were introduced into various sites of diphosphomevalonate decarboxylase (MVD), thus preparing a large number of MVD variants. Then, the variants were each evaluated in terms of a catalytic activity for production of olefin compounds such as isoprene. As a result, it was found that substitution of glycine at position with a different amino acid resulted in improvement in the catalytic activity. In addition, it was found that the MVD in which arginine at position and threonine at position in addition to the position were further substituted with different amino acids, respectively, also had the high catalytic activity.
    Type: Grant
    Filed: September 26, 2017
    Date of Patent: March 30, 2021
    Assignees: RIKEN, ZEON CORPORATION, THE YOKOHAMA RUBBER CO., LTD.
    Inventors: Ryoko Orishimo, Tomokazu Shirai, Kazuhiro Takahashi, Misao Hiza, Yusuke Tanabe
  • Publication number: 20210087349
    Abstract: Provided is a method for producing a latex comprising hollow resin particles each with a high void ratio and a method for producing hollow resin particles each with a higher void ratio. In the method for producing the latex: a suspension treatment of the mixture liquid which comprises a monomer, a crosslinkable monomer, an oil-soluble polymerization initiator, a fat/fatty oil, a hydrocarbon solvent, a suspension stabilizer and an aqueous medium is carried out to prepare a suspension comprising monomer drops; a polymerization reaction of the suspension is carried out to prepare a precursor composition which comprises precursor particles each having a hollow portion including the hydrocarbon solvent.
    Type: Application
    Filed: July 31, 2018
    Publication date: March 25, 2021
    Applicant: ZEON CORPORATION
    Inventors: Takashi Iga, Takeshi Hirata, Nozomi Yabuki
  • Publication number: 20210091414
    Abstract: Disclosed is laminate for a non-aqueous secondary battery which may be prevented from undergoing blocking. The laminate comprises a non-porous substrate layer, and an adhesive layer formed on a surface on one side of the substrate layer, wherein a surface roughness of the surface on the one side of the substrate layer is greater than a surface roughness of a surface on the other side of the substrate layer. Preferably, the surface roughness of the surface on the one side of the substrate layer is 0.20 ?m or more and 2.00 ?m or less. Preferably, the surface roughness of the surface on the other side of the substrate layer is 0.01 ?m or more and 0.15 ?m or less.
    Type: Application
    Filed: December 21, 2018
    Publication date: March 25, 2021
    Applicant: ZEON CORPORATION
    Inventor: Hiroshi KOGA
  • Patent number: 10954443
    Abstract: Provided is a compound represented by the following formula: Y1 to Y8 each represent a chemical single bond, —O—, —S—, —O—C(?O)—, —C(?O)—O—, —O—C(?O)—O—, —NR1—C(?O)—, —C(?O)—NR1—, —O—C(?O)—NR1—, —NR1—C(?O)—O—, —NR1—C(?O)—NR1—, —O—NR1—, or —NR1—O—, R1 being a hydrogen atom or an alkyl group having 1 to 6 carbon atoms. G1 and G2 each represent a divalent linear aliphatic group having 1 to 20 carbon atoms. that optionally includes —O—, —S—, —O—C(?O)—, —C(?O)—O—, —O—C(?O)—O—, —NR3—C(?O)—, —C(?O—NR3—, —NR3—, or —C(?O)—. Z1 and Z2 each represent an alkenyl group having 2 to 10 carbon atoms. A1 represents a trivalent aromatic group. A2 and A3 each represent a divalent alicyclic hydrocarbon group having 3 to 30 carbon atoms. A4 and A5 each represents a divalent aromatic group having 6 to 30 carbon atoms. Q1 represents a alkyl group having 1 to 6 carbon atoms, an organic group having 2 to 30 carbon atoms that includes at least one of an aromatic hydrocarbon ring and a heteroaromatic ring, or a hydrogen atom.
    Type: Grant
    Filed: July 16, 2019
    Date of Patent: March 23, 2021
    Assignee: ZEON CORPORATION
    Inventors: Kei Sakamoto, Kumi Okuyama
  • Patent number: 10954128
    Abstract: A method of producing fibrous carbon nanostructures uses a fluidized bed process, and comprises supplying a source gas to a reaction site in which a supported catalyst having a particulate carrier and a catalyst supported on a surface of the carrier is fluidizing, to form fibrous carbon nanostructures on the catalyst of the supported catalyst, wherein the source gas contains a double bond-containing hydrocarbon and carbon dioxide, and a content of the carbon dioxide is 0.3 vol % or more with respect to a total volume of the source gas.
    Type: Grant
    Filed: January 20, 2017
    Date of Patent: March 23, 2021
    Assignees: WASEDA UNIVERSITY, ZEON CORPORATION
    Inventors: Suguru Noda, Soichiro Hachiya, Zhongming Chen, Takayoshi Hongo
  • Patent number: 10955764
    Abstract: A toner which is less likely to cause toner leakage and which is less likely to cause aggregation after being left to stand under a high temperature condition. A toner for developing electrostatic images, comprising colored resin particles comprising a binder resin and a colorant, and an external additive, wherein a conditioned bulk density obtained by a powder flowability analyzing device is from 0.525 g/mL to 0.565 g/mL.
    Type: Grant
    Filed: September 20, 2017
    Date of Patent: March 23, 2021
    Assignee: ZEON CORPORATION
    Inventors: Kojiro Akazaki, Junichi Takashima
  • Publication number: 20210079183
    Abstract: Provided is a film for a capacitor that can improve dielectric strength retention at high temperatures and can also improve metal vapor deposition properties and formability. The film for a capacitor contains a hydrogenated dicyclopentadiene ring-opened polymer that is crystalline and has a heat shrinkage ratio of not less than 0.01% and not more than 1.0% when heated at 200° C. for 10 minutes, a plane orientation factor of 0.01 or more, a density of 1.03×106 g/m3 or more, and a thickness of 15.0 ?m or less.
    Type: Application
    Filed: February 15, 2019
    Publication date: March 18, 2021
    Applicant: ZEON CORPORATION
    Inventors: Ayako KATO, Shinsuke MIYAZAWA
  • Publication number: 20210070907
    Abstract: A latex composition having a nitrile rubber containing an ?,?-ethylenically unsaturated nitrile monomer unit and a conjugated diene monomer unit, wherein the nitrile rubber has a weight average molecular weight of 50,000 to 100,000, and the weight of methanol extractables in all solids present in the latex composition is 2 to 20 wt % based on the weight of all the solids.
    Type: Application
    Filed: January 10, 2019
    Publication date: March 11, 2021
    Applicant: ZEON CORPORATION
    Inventor: Kentaro HAYASAKA
  • Publication number: 20210075018
    Abstract: A binder composition for a secondary battery positive electrode comprises a polymer containing a nitrile group-containing monomer unit, an aromatic vinyl monomer unit, a hydrophilic group-containing monomer unit, and a linear alkylene structural unit having a carbon number of 4 or more, wherein the polymer contains the aromatic vinyl monomer unit in a proportion of more than 50.0 mass % and 65.0 mass % or less.
    Type: Application
    Filed: December 14, 2018
    Publication date: March 11, 2021
    Applicant: ZEON CORPORATION
    Inventor: Yukie ITO
  • Patent number: D913211
    Type: Grant
    Filed: August 14, 2019
    Date of Patent: March 16, 2021
    Assignee: ZEON CORPORATION
    Inventor: Kiyoshige Kojima