Patents Assigned to Mitsubishi Chemical
  • Patent number: 11939452
    Abstract: A polyvinyl alcohol film is provided, which is highly transparent, and excellent in antistatic property and cold-water solubility. The polyvinyl alcohol film contains: (A) a polyvinyl alcohol resin; and (B) an ester of a C2 to C4 fatty acid (b1) and a polyhydric alcohol (b2); wherein the ester (B) is present in an amount of 1 to 4,000 ppm.
    Type: Grant
    Filed: January 13, 2021
    Date of Patent: March 26, 2024
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventor: Shouichi Kani
  • Patent number: 11943997
    Abstract: Provided are: a highly durable polymer having a high hole-injection/transport capacity; and a composition for an organic electroluminescent element, which contains the polymer.
    Type: Grant
    Filed: September 16, 2020
    Date of Patent: March 26, 2024
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Yanjun Li, Tomokazu Umemoto, Hideki Gorohmaru, Koichiro Iida, Kouji Adachi
  • Publication number: 20240092956
    Abstract: Provided is a polymer including a constituent unit (1) based on a monomer represented by Formula (1), in which a content of a constituent unit based on a monomer having a polycyclic structure is 35 mol % or less. In Formula (1), R1 represents a hydrogen atom or a methyl group, A1 represents a linking group including an ester bond, or a single bond, where A1 has no tertiary carbon atom, and Z1 represents an atomic group forming a sulfur-containing cyclic hydrocarbon group having 3 to 6 carbon atoms, which includes a carbon atom bonded to A1, and —SO2—.
    Type: Application
    Filed: November 6, 2023
    Publication date: March 21, 2024
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Kazuaki Mukai, Takeru Jo, Yoshihiro Kamon, Satoshi Sakuma, Ryuichi Ansai
  • Publication number: 20240093251
    Abstract: The present invention relates to a method for producing an amide compound from a nitrile compound in the presence of a biocatalyst having nitrile hydratase activity, wherein the amide compound is efficiently produced by suppressing a deactivation of the biocatalyst, and improving the rate of conversion reaction from the nitrile compound to the amide compound.
    Type: Application
    Filed: August 10, 2023
    Publication date: March 21, 2024
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Takafumi Yamaguchi, Norifumi Hagiya, Makoto Kano, Kazuya Takanashi
  • Patent number: 11931990
    Abstract: Provided is a composition for a sound insulating sheet member, a sound insulating sheet member, and a sound insulating structure body with excellent sound insulating performance. A sound insulating structure body including: a plurality of convex-shaped rubber-elastic resonant portions; and a sheet-like support that supports the resonant portions, wherein the resonant portions have a storage modulus G? obtained from a composite curve of dynamic viscoelasticity according to ISO 6721-4 of 100 MPa or less at 25° C. and 10 kHz, and the areal density of the support is 1.0 kg/m2 or less.
    Type: Grant
    Filed: October 23, 2020
    Date of Patent: March 19, 2024
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Haruki Koshitouge, Daichi Okuno
  • Patent number: 11931927
    Abstract: A main object of the present invention is to provide beneficial improvements relating to a method for producing a fiber reinforced plastic product, the method including curing while pressurizing a prepreg preform by using a core having a fusible part as means for pressurizing.
    Type: Grant
    Filed: September 3, 2021
    Date of Patent: March 19, 2024
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Satoshi Kaji, Tsuneo Takano, Takashi Honma
  • Patent number: 11936044
    Abstract: A carbon material for a non-aqueous secondary battery containing a graphite capable of occluding and releasing lithium ions, and having a cumulative pore volume at pore diameters in a range of 0.01 ?m to 1 ?m of 0.08 mL/g or more, a roundness, as determined by flow-type particle image analysis, of 0.88 or greater, and a pore diameter to particle diameter ratio (PD/d50 (%)) of 1.8 or less, the ratio being given by equation (1A): PD/d50 (%)=mode pore diameter (PD) in a pore diameter range of 0.01 ?m to 1 ?m in a pore distribution determined by mercury intrusion/volume-based average particle diameter (d50)×100 is provided.
    Type: Grant
    Filed: January 5, 2017
    Date of Patent: March 19, 2024
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Shunsuke Yamada, Nobuyuki Ishiwatari, Satoshi Akasaka, Daigo Nagayama, Shingo Morokuma, Koichi Nishio, Iwao Soga, Hideaki Tanaka, Takashi Kameda, Tooru Fuse, Hiromitsu Ikeda
  • Publication number: 20240084055
    Abstract: Provided is a monomer composition containing methyl methacrylate, and at least one compound of methyl pyruvate and methyl 2-methylbutyrate.
    Type: Application
    Filed: November 17, 2023
    Publication date: March 14, 2024
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Hiroaki ITO, Yusuke HIRANO, Issei TANIGUCHI, Manabu ISOMURA, Kouichi KANEMORI
  • Publication number: 20240083835
    Abstract: Provided is a monomer composition containing methyl methacrylate and methyl propionate, in which the methyl propionate content is more than 200 ppm by mass and 50,000 ppm by mass or less relative to the total mass of the monomer composition.
    Type: Application
    Filed: November 17, 2023
    Publication date: March 14, 2024
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Hiroaki ITO, Yusuke HIRANO, Issei TANIGUCHI, Manabu ISOMURA, Kouichi KANEMORI
  • Patent number: 11929478
    Abstract: A filling member is interposed between pouch cells of a battery pack, the filling member has a first surface orthogonal to a thickness direction thereof and a second surface opposite to the first surface, ?d1 and ?d2 defined below satisfy formulas (1) and (2) below, respectively, ?p satisfies formula (3) below, and ?d1>?d2 holds: (1) ?d1?3.0×10?3 (m2·K)/W, (2) ?d2?8.0×10?3 (m2·K)/W, (3) 0.5 K/W??p1?1000 K/W, and (4) 0.5 K/W??p2?1000 K/W. ?d1 is heat transfer resistance when the average temperature of one of the first and second surfaces exceeds 180° C., ?d2 is heat transfer resistance when the average temperatures of the first and second surfaces both do not exceed 80° C., ?p1 is heat transfer resistance when the average temperature exceeds 180° C., ?p2 is heat transfer resistance when the average temperatures do not exceed 80° C.
    Type: Grant
    Filed: February 2, 2021
    Date of Patent: March 12, 2024
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Tomohiro Kawai, Hiroki Hayami
  • Publication number: 20240076455
    Abstract: A method for manufacturing a fiber-reinforced polybutylene terephthalate resin composition contain 40-90 mass % of a polybutylene terephthalate resin, 10-60 mass % of a reinforcing fiber, and 0-35 mass % of other polymer or additive by using a twin-screw extruder, the method includes using polybutylene terephthalate resin pellets (avg. weight of 16-29 mg) as a raw material for the resin by: (1) kneading the resin and the fiber with a first kneading part; (2) adding the fiber at a part downstream of the first kneading part and performing kneading with a second kneading part; and (3) reducing pressure of a vent at a part downstream of the second kneading part and performing devolatilization, where the first kneading part has a length of 5.0-9.0 D and a specific screw configuration, the second kneading part contains a specific screw configuration, and the production is carried out with a screw shaft torque density of 11.5-19 Nm/cm3.
    Type: Application
    Filed: January 13, 2022
    Publication date: March 7, 2024
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Toshiyuki TAJIRI, Masaru TAKEHANA
  • Publication number: 20240076489
    Abstract: Disclosed is a biaxially stretched film containing two or more kinds of polyesters, in which at least one of the polyesters is a polybutylene naphthalate resin (A), and a dielectric tangent at 28 GHz is 0.0040 or less. There can be provided a biaxially stretched film having excellent low-dielectric properties.
    Type: Application
    Filed: November 6, 2023
    Publication date: March 7, 2024
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Taiki Tsuruoka, Shunsuke Koido, Tomohiro Suzuki
  • Patent number: 11919255
    Abstract: Provided are a method and an apparatus for manufacturing a fiber-reinforced resin molding material by which, when the fiber-reinforced resin molding material is manufactured, separated fiber bundles can be supplied to a cutting machine in stable condition while avoiding the influence of meandering of the fiber bundles or slanting or meandering of filaments occurring in the fiber bundles. A method for manufacturing a sheet-shaped fiber-reinforced resin molding material in which spaces between filaments of cut-out fiber bundles (CF) are impregnated with resin includes, so that a condition of the following expression (1) is satisfied, intermittently separating fibers of the continuous fiber bundles (CF) in a longitudinal direction by a rotational blade (18) serving as a fiber separating part and cutting out the fiber bundles with an interval therebetween in a longitudinal direction of a cutting machine (13A) to obtain the cut-out fiber bundles (CF).
    Type: Grant
    Filed: October 31, 2022
    Date of Patent: March 5, 2024
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Tadao Samejima, Yukihiro Mizutori, Yasushi Watanabe, Junji Kanehagi
  • Publication number: 20240072127
    Abstract: An excellent method of manufacturing a patterned substrate which is capable of easily patterning an insulation layer to provide a patterned substrate even when a difficult-to-etch material is used for the insulation layer, a patterned substrate obtained thereby, and a patterned substrate intermediate thereof are provided. The method of manufacturing a patterned substrate with the insulation layer and an electrode layer stacked in this order on a substrate comprising: forming an organic resist material layer; irradiating the organic resist material layer with radiation or an electromagnetic wave of a wavelength of 10 to 780 nm and developing the organic resist material layer to form a first patterning layer; and removing the first patterning layer.
    Type: Application
    Filed: August 22, 2023
    Publication date: February 29, 2024
    Applicant: Mitsubishi Chemical Corporation
    Inventor: Hiroshi FUKUI
  • Publication number: 20240072325
    Abstract: A partition member has two surfaces in a thickness direction, and separates single cells that make up an assembled battery. When the average temperature of one of the two surfaces exceeds 180° C., a thermal resistance per unit area (?1) in the thickness direction satisfies Expression 1 below, and when the average temperatures of both of the two surfaces do not exceed 80° C., a thermal resistance per unit area (?2) in the thickness direction satisfies Expression 2 below. ?1?5.0×10?3(m2·K/W)??(Expression 1), and ?2?4.0×10?3(m2·K/W)??(Expression 2).
    Type: Application
    Filed: November 2, 2023
    Publication date: February 29, 2024
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Yoko WATANABE, Tomohiro KAWAI, Iwao SOGA
  • Patent number: 11912826
    Abstract: Provided is a fiber-reinforced thermoplastic resin prepreg which exhibits high interfacial adhesion between reinforcement fibers and a matrix resin, while having excellent interlaminar fracture resistance. The fiber-reinforced thermoplastic resin prepreg of the present invention comprises: a matrix resin comprising a polyarylketone resin and a polyetherimide resin; and a carbon fiber, wherein the polyetherimide resin in the matrix resin comprises a polyetherimide resin having a structural unit represented by Formula (1), an amount of the polyetherimide resin in the matrix resin (100% by mass) is 3% by mass to 25% by mass, and an amount of the polyarylketone resin in the matrix resin (100% by mass) is 75% by mass or more.
    Type: Grant
    Filed: August 17, 2020
    Date of Patent: February 27, 2024
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Takahiro Hayashi, Takeshi Ishikawa, Kouichiro Taniguchi, Kazuya Tanaka, Masayasu Hasuike
  • Patent number: 11916180
    Abstract: Narrow bandgap n-type small molecules are attracting attention in the near-infrared organic optoelectronics field, due to their easy tunable energy band with a molecular design flexibility. However, only a few reports demonstrate narrow bandgap non-fullerene acceptors (NFAs) that perform well in organic solar cells (OSCs), and the corresponding benefits of NFA photodiodes have not been well investigated in organic photodetectors (OPDs). Here, the ultra-narrow bandgap NFAs CO1-4F, CO1-4Cl and o-IO1 were designed and synthesized for the achieved efficient near-infrared organic photodiodes such as solar cells and photodetectors. Designing an asymmetrical CO1-4F by introducing two different ?-bridges including alkylthienyl and alkoxythienyl units ultimately provides an asymmetric A-D?-D-D?-A molecular configuration. This enables a delicate modulation in energy band structure as well as maintains an intense intramolecular charge transfer characteristic of the excited state.
    Type: Grant
    Filed: February 14, 2020
    Date of Patent: February 27, 2024
    Assignees: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA, THE MITSUBISHI CHEMICAL CORPORATION
    Inventors: Jaewon Lee, Soe-Jin Ko, Jianfei Huang, Martin Seifrid, Hengbin Wang, Thuc-Quyen Nguyen, Guillermo C. Bazan
  • Patent number: 11911933
    Abstract: A molding provided with a sheet-shaped composite material section formed from a fiber-reinforced composite material containing reinforcing fibers and a matrix resin, and protruding ribs formed directly on a first surface of the composite material section and containing a thermoplastic resin, wherein the ribs intersect with each other on the first surface, and the mean width t, mean height H and the proportion occupied on the first surface are within specified ranges. A manufacturing method for the molding including a composite material section-forming step for forming the composite material section, and a rib-forming step for forming the ribs so as to satisfy the above conditions.
    Type: Grant
    Filed: March 30, 2016
    Date of Patent: February 27, 2024
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Akihiro Maeda, Masao Tomioka
  • Publication number: 20240059817
    Abstract: An object of the present invention is to provide a methyl methacrylate-containing composition having high storage and heat stability. This can be solved with a methyl methacrylate-containing composition containing methyl methacrylate, an ester compound having an alpha-hydrogen represented by Formula (1) (component A), and a polymerization inhibitor (component B), in which the concentration of methyl methacrylate is from 99% by mass to 99.99% by mass.
    Type: Application
    Filed: October 24, 2023
    Publication date: February 22, 2024
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Yu Kurihara, Yuki Kato, Tatsuya Suzuki, Wataru Ninomiya
  • Publication number: 20240059643
    Abstract: The purpose of the present invention is to provide a methyl methacrylate-containing composition with high quality stability during storage. This can be solved with a methyl methacrylate-containing composition containing methyl methacrylate, and an alkyl-substituted aryl compound represented by the following Formula (1), in which the concentration of methyl methacrylate is from 99 to 99.99% by mass.
    Type: Application
    Filed: October 25, 2023
    Publication date: February 22, 2024
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Yu Kurihara, Yuki Kato, Tatsuya Suzuki, Wataru Ninomiya