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    CARBON FIBER BUNDLE AND PRODUCTION METHOD FOR SAME
    42.
    发明公开
    CARBON FIBER BUNDLE AND PRODUCTION METHOD FOR SAME 审中-公开

    公开(公告)号：US20240229304A9

    公开(公告)日：2024-07-11

    申请号：US18573812

    申请日：2022-07-20

    Applicant: TORAY INDUSTRIES, INC.

    Inventor： Kiminori ONO ,  Yuki SADO ,  Fumihiko TANAKA ,  Masahiro MATSUMOTO

    IPC: D01F9/22

    CPC classification number: D01F9/22 ,  D10B2101/12

    Abstract: To provide a carbon fiber bundle capable of suppressing winding due to ring-shaped fuzzes, which occurs when the carbon fiber bundle is rolled out for advanced processing, and a production method for producing the same. Disclosed is a carbon fiber bundle wherein an average single-fiber diameter B is 6.9 to 11.0 μm, a tensile modulus E of resin-impregnated strands is 230 to 310 GPa, the number of fuzzes inherent in the carbon fiber bundle is 40 fuzzes/m or less, and a proportion of fuzzes with a structure having a difference between skin and core is 1 to 25% of fuzzes inherent in the carbon fiber bundle. Such a carbon fiber bundle is preferably obtained by a method including, in a process of heat-treating a polyacrylonitrile-based precursor fiber bundle with a single-fiber fineness of 0.9 to 2.2 dtex in an oxidizing atmosphere at 200 to 300° C., heat-treating the polyacrylonitrile-based precursor fiber bundle so that a heat generation rate Q, which is the left side of the formula (3), is 150 to 500 J/m2/s until the density is 1.22 to 1.24 g/cm3, when q (J/g/s) is the heat generation rate of the single fiber, N is the number of filaments, d (dtex) is a single-fiber fineness of the stabilized fiber bundle and W (mm) is a yarn width, heat-treating the fiber bundle while applying a tension of 1.6 to 4.0 mN/dtex until the density is 1.38 to 1.50 g/cm3 to obtain a stabilized fiber bundle, and heat-treating the stabilized fiber bundle in an inert atmosphere at 1,200 to 1,600° C.


    Q=q×N×d/W/10  (3)

    METHOD FOR DETECTING MICRORNA IN BIOLOGICAL SAMPLE, COMPOSITION OF HYDROCHLORIDE OF NEUTRAL AMINO ACID, AND CONTAINER
    43.
    发明公开
    METHOD FOR DETECTING MICRORNA IN BIOLOGICAL SAMPLE, COMPOSITION OF HYDROCHLORIDE OF NEUTRAL AMINO ACID, AND CONTAINER 审中-公开

    公开(公告)号：US20240229116A9

    公开(公告)日：2024-07-11

    申请号：US18279614

    申请日：2022-03-17

    Applicant: Toray Industries, Inc.

    Inventor： Yoichiro KOSHI ,  Osamu WAKAO

    IPC: C12Q1/6837 ,  C12Q1/6806 ,  C12Q1/6886

    CPC classification number: C12Q1/6837 ,  C12Q1/6806 ,  C12Q1/6886

    Abstract: The microRNA detection level decreases when a microRNA-containing biological sample is preserved after being collected. Further, a relatively long period of time is required for dissolving a hydrochloride of a neutral amino acid, which is in the form of crystals, in water. Since a hydrochloride of a neutral amino acid is an acidic substance, and causes skin irritation and mucosal irritation, the handling of the hydrochloride requires safety precautions. The present invention provides a method of detecting a microRNA in a biological sample, the method including the steps of: mixing an acid with the biological sample, preserving the resulting mixture for a predetermined period of time, collecting the microRNA in the biological sample, and detecting the microRNA. Further, the present invention provides a homogeneous semi-solid composition composed of a hydrochloride of a neutral amino acid, water and an alcohol.

    SECONDARY BATTERY
    45.
    发明公开
    SECONDARY BATTERY 审中-公开

    公开(公告)号：US20240213618A1

    公开(公告)日：2024-06-27

    申请号：US18551828

    申请日：2022-03-28

    Applicant: Toray Industries, Inc.

    Inventor： Kei Ikoma ,  Aya Seita ,  Akimitsu Tsukuda

    IPC: H01M50/423 ,  H01M12/08 ,  H01M50/497

    CPC classification number: H01M50/423 ,  H01M12/08 ,  H01M50/497 ,  H01M2300/0011 ,  H01M2300/0014 ,  H01M2300/0028

    Abstract: A secondary battery includes a positive electrode, a negative electrode, a nonaqueous electrolyte, an aqueous electrolyte, and a separator, in which the positive electrode is an air electrode, the negative electrode includes a negative electrode current collector and a negative electrode mixture layer formed on the negative electrode current collector, the negative electrode mixture layer contains at least one component selected from the group consisting of lithium metal, magnesium, zinc, and aluminum, and the separator is a polymer film having an air permeability of more than 10,000 seconds, an ionic conductance of 1×10−5 S/cm or more, and a water contact angle of 90° or more.

    Polypropylene film, metal layer laminated film using same, and film capacitor
    46.
    发明授权
    Polypropylene film, metal layer laminated film using same, and film capacitor 有权

    公开(公告)号：US12020871B2

    公开(公告)日：2024-06-25

    申请号：US17799322

    申请日：2021-02-18

    Applicant: Toray Industries, Inc.

    Inventor： Yasuyuki Imanishi ,  Masatoshi Ohkura ,  Yuta Nakanishi

    IPC: H01G4/33 ,  H01G4/18 ,  H01G4/32 ,  C08J5/18

    CPC classification number: H01G4/33 ,  H01G4/18 ,  H01G4/32 ,  C08J5/18

    Abstract: A polypropylene film in which: during a heating process in thermomechanical analysis (TMA), the relationship (Ts−Tf)≤40° C. is satisfied by the temperature (Ts) (° C.) at which the film contracts by 0.1% in the longitudinal direction and the temperature (Tf) (° C.) at which the longitudinal shrink stress reaches 0.01 MPa; and the skewness (Ssk), which is the degree of bias of the protrusion shape, of at least one surface of the film is greater than −30 and less than 5. Thus provided is a polypropylene film that has excellent reliability and withstand voltage characteristics in high temperature environments when used in high voltage capacitors, that has a structure with excellent stability against heat and is suitable for applications in capacitors or the like to be used at high temperatures and high voltages, and that has excellent processability and does not wrinkle during a conveyance process including a vapor deposition process.

    Method for producing flame-proof fiber bundle, and method for producing carbon fiber bundle
    48.
    发明授权
    Method for producing flame-proof fiber bundle, and method for producing carbon fiber bundle 有权

    公开(公告)号：US12012671B2

    公开(公告)日：2024-06-18

    申请号：US17290348

    申请日：2019-11-06

    Applicant: Toray Industries, Inc.

    Inventor： Naoto Hosotani ,  Taku Yamamoto ,  Kazuyuki Gondo ,  Kohei Takamatsu ,  Yusuke Kuji

    IPC: D01F9/10 ,  D01F9/22 ,  D01F9/32

    CPC classification number: D01F9/225 ,  D01F9/328

    Abstract: A method of manufacturing a stabilized fiber bundle is described, which includes subjecting an acrylic fiber bundle aligned, to a heat treatment in an oxidizing atmosphere, with the acrylic fiber bundle being turned around by a guide roller placed on each of both ends outside a hot air heating-type oxidation oven, wherein an air velocity Vm of first hot air sent through a supply nozzle(s) disposed above and/or under a fiber bundle travelled in the oxidation oven, in a substantially horizontal direction to a travelling direction of the fiber bundle, and an air velocity Vf of second hot air flowing in a fiber bundle passing a flow channel in which the fiber bundle is travelled that satisfies expression 1)

    0.2≤Vf/Vm≤2.0  1)

    to produce a high-quality stabilized fiber bundle and a high-quality carbon fiber bundle at high efficiencies without any process troubles.

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