Patents by Inventor Yukie Ito

Yukie Ito has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20240088391
    Abstract: A dispersant composition for an electrochemical device contains a polymer including a nitrile group-containing monomer unit and an alkylene structural unit. Upon measurement of the polymer contained in the composition by dynamic light scattering, a value (A) detected for volume-average particle diameter D50 is not less than 50 nm and not more than 800 nm, and one or more peaks are detected in a particle diameter range of not less than 5 ?m and not more than 30 ?m.
    Type: Application
    Filed: August 26, 2021
    Publication date: March 14, 2024
    Applicant: ZEON CORPORATION
    Inventors: Yukie ITO, Akito NAKAI
  • Patent number: 11929507
    Abstract: A binder composition contains an organic solvent and a binder that includes a particulate polymer A and a highly soluble polymer B. The particulate polymer A includes an ethylenically unsaturated acid monomer unit in a proportion of not less than 1.0 mass % and not more than 10.0 mass % and a (meth)acrylic acid ester monomer unit in a proportion of not less than 30.0 mass % and not more than 98.0 mass %. The particulate polymer A includes two particulate polymers A1 and A2 having different volume-average particle diameters. The volume-average particle diameters D50A1 and D50A2 of these particulate polymers A1 and A2 satisfy a formula: D50A2>D50A1?50 nm.
    Type: Grant
    Filed: June 27, 2019
    Date of Patent: March 12, 2024
    Assignee: ZEON CORPORATION
    Inventors: Yukie Ito, Kenya Sonobe, Maki Mesuda
  • Publication number: 20230420650
    Abstract: An electrode for an electrochemical device having excellent flexibility includes an electrode mixed material layer that contains an electrode active material, a conductive material, and a binder. The conductive material includes a fibrous conductive material. The proportional content of the fibrous conductive material in the electrode mixed material layer is not less than 0.3 mass % and not more than 1.5 mass %. The binder includes a polymer A that includes a nitrile group-containing monomer unit and an alkylene structural unit and that has a Mooney viscosity (ML1+4, 100° C.) of not less than 70 and not more than 150. The polymer A is contained in the electrode mixed material layer in a proportion of not less than 50 parts by mass and not more than 200 parts by mass per 100 parts by mass of the fibrous conductive material.
    Type: Application
    Filed: November 5, 2021
    Publication date: December 28, 2023
    Applicant: ZEON CORPORATION
    Inventors: Naoki TAKAHASHI, Yukie ITO
  • Publication number: 20230420681
    Abstract: A paste for an electrochemical device contains a conductive material, a polymer A, and a dispersion medium. The conductive material includes a fibrous conductive material and is contained in the paste in a proportion of more than 2 mass %. The polymer A includes a nitrile group-containing monomer unit and an alkylene structural unit and has a Mooney viscosity (ML1+4, 100° C.) of not less than 70 and not more than 150. The paste contains the polymer A in a proportion of more than 50 parts by mass and not more than 200 parts by mass per 100 parts by mass of the conductive material.
    Type: Application
    Filed: November 17, 2021
    Publication date: December 28, 2023
    Applicant: ZEON CORPORATION
    Inventors: Yukie ITO, Naoki TAKAHASHI
  • Publication number: 20230299298
    Abstract: A conductive material dispersion liquid for an electrochemical device contains a conductive material, a dispersant, and a solvent. The conductive material dispersion liquid for an electrochemical device has a zeta potential absolute value within a range of 30 mV or less, the dispersant is a polymer including a nitrile group-containing monomer unit and an alkylene structural unit, and the solvent is an organic solvent.
    Type: Application
    Filed: August 26, 2021
    Publication date: September 21, 2023
    Applicant: ZEON CORPORATION
    Inventors: Yukie ITO, Junpei MOTOKI
  • 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
  • Publication number: 20220190340
    Abstract: A binder composition for a non-aqueous secondary battery electrode contains a polymer A. The polymer A includes a nitrile group-containing monomer unit in a proportion of not less than 80.0 mass % and not more than 99.9 mass %, has a weight-average molecular weight (Mw) of not less than 700,000 and not more than 2,000,000, and includes components having a molecular weight of less than 500,000 in a proportion of less than 30%.
    Type: Application
    Filed: April 17, 2020
    Publication date: June 16, 2022
    Applicant: ZEON CORPORATION
    Inventors: Junichi ASANO, Yukie ITO
  • Publication number: 20210273227
    Abstract: Provided is a binder composition for an electrochemical device electrode with which it is possible to form an electrode mixed material layer that has excellent peel strength and dusting resistance and that can cause an electrochemical device to display excellent rate characteristics. The binder composition for an electrochemical device electrode contains a binder and an organic solvent. The binder includes a particulate polymer A and a polymer B. The particulate polymer A has a core-shell structure including a core portion and a shell portion at least partially covering an outer surface of the core portion, and a polymer forming the shell portion has a glass-transition temperature of ?50° C. to 20° C. A mixture obtained by mixing the polymer B in a concentration of 8 mass % with the organic solvent has a viscosity at a shear rate of 1 s?1 of 100 mPa·s to 10,000 mPa·s.
    Type: Application
    Filed: June 24, 2019
    Publication date: September 2, 2021
    Applicant: ZEON CORPORATION
    Inventors: Maki MESUDA, Yukie ITO
  • Publication number: 20210218030
    Abstract: A binder composition for a non-aqueous secondary battery electrode contains: a polymer A including a (meth)acrylic acid ester monomer unit; a polymer B having an iodine value of not less than 5 g/100 g and not more than 100 g/100 g; a polymer C including a nitrile group-containing monomer unit in a proportion of not less than 70 mass % and not more than 98 mass %; and an organic solvent.
    Type: Application
    Filed: June 18, 2019
    Publication date: July 15, 2021
    Applicant: ZEON CORPORATION
    Inventors: Yukie ITO, Tomoya MURASE, Takafumi SEKIMOTO
  • Publication number: 20210119215
    Abstract: A binder composition contains an organic solvent and a binder that includes a particulate polymer A and a highly soluble polymer B. The particulate polymer A includes an ethylenically unsaturated acid monomer unit in a proportion of not less than 1.0 mass % and not more than 10.0 mass % and a (meth)acrylic acid ester monomer unit in a proportion of not less than 30.0 mass % and not more than 98.0 mass %. The particulate polymer A includes two particulate polymers A1 and A2 having different volume-average particle diameters. The volume-average particle diameters D50A1 and D50A2 of these particulate polymers A1 and A2 satisfy a formula: D50A2>D50A1?50 nm.
    Type: Application
    Filed: June 27, 2019
    Publication date: April 22, 2021
    Applicant: ZEON CORPORATION
    Inventors: Yukie ITO, Kenya SONOBE, Maki MESUDA
  • 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
  • Publication number: 20100163446
    Abstract: To provide a liquid container, which exhibits excellent storage stability and impact resistance and which can be used for producing a soft bag pharmaceutical product of an injection liquid containing nitroglycerin, a protein, hyaluronic acid, a vitamin, a trace element, a radical scavenger, and the like. The liquid container of the invention formed of a multilayer film and/or multilayer sheet, characterized in that the multilayer film and/or multilayer sheet has a barrier layer containing, as a predominant component, a polycycloolefin-based resin having a glass transition temperature higher by 5° C. or more than the temperature at which the container is subjected to thermal treatment or high-pressure steam sterilization, and a seal layer containing, as a predominant component, a polyethylene-based resin or a polypropylene-based resin, and the barrier layer being provided adjacent to the seal layer.
    Type: Application
    Filed: June 26, 2007
    Publication date: July 1, 2010
    Applicant: FUJIMORI KOGYO CO., LTD.
    Inventors: Toyoaki Suzuki, Koichi Miura, Akemi Kishimoto, Kunihiko Kimura, Yoshikazu Kato, Yukie Ito