Patents Assigned to Mitsubishi Chemical Corporation
  • 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
  • Publication number: 20240059818
    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, an ?,?-unsaturated carbonyl compound represented by the following Formula (1), and a polymerization inhibitor, in which the concentration of methyl methacrylate is from 99 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: 20240059642
    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 comprising methyl methacrylate, and an aryl alkyl ether 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 24, 2023
    Publication date: February 22, 2024
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Yu Kurihara, Yuki Kato, Tatsuya Suzuki, Wataru Ninomiya
  • Publication number: 20240063486
    Abstract: A partition member which has a thickness direction and a planar direction orthogonal to the thickness direction and which constitutes a partition between single batteries in the thickness direction or between a single battery and a member other than the single battery, wherein the partition member includes a thermal insulation material, and an auxiliary member which is disposed so as to be adjacent to the thermal insulation material in the planar direction and regulates a degree of contraction of the thermal insulation material in the thickness direction. A ratio of a density of the auxiliary member relative to a density of the thermal insulation material is 0.50 to 6.0.
    Type: Application
    Filed: November 3, 2023
    Publication date: February 22, 2024
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Tatsuhiko HONDA, Naoto MARU
  • Publication number: 20240052165
    Abstract: Provided is a resin composition which makes it possible to obtain a molded product exhibiting excellent flame retardance without significantly degrading the impact resistance characteristics. The resin composition according to the present invention comprises a thermoplastic resin and a polyorganosiloxane-containing polymer, where the resin composition satisfies Expression (1). Y?X?20° C.??(1) (In Expression (1), X means a temperature at which a residual amount of the polyorganosiloxane-containing polymer reaches 1 part by mass in a case where 100 parts by mass of the polyorganosiloxane-containing polymer is heated to 550° C. at 10° C./min under a nitrogen flow rate of 200 mL/min, and Y means a temperature at which a residual amount of the thermoplastic resin reaches 90 parts by mass in a case where 100 parts by mass of the thermoplastic resin is heated to 550° C. at 10° C./min under a nitrogen flow rate of 200 mL/min.
    Type: Application
    Filed: September 11, 2023
    Publication date: February 15, 2024
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Hiroya ARAI, Yuta MAENAKA, Masashi IIMORI
  • Publication number: 20240055607
    Abstract: The present invention provides a carbon material composition containing a carbon material (A) and a carbon material (B), in which the carbon material (A) contains graphite containing an amorphous carbonaceous material or a graphite material, has two or more peaks in a pore size distribution measured by a mercury porosimetry, and satisfies y??0.0084x+0.13 wherein a cumulative pore volume in a range where a pore diameter is equal to or smaller than a pore diameter at a local minimum value between a peak of a smallest pore diameter and a peak of a second smallest pore diameter in the pore size distribution is defined as y (mL/g) and a coating rate of the amorphous carbonaceous material or the graphite material in the graphite is defined as x (%), and the carbon material (B) has a pellet density of 1.80/cm3 or more.
    Type: Application
    Filed: October 20, 2023
    Publication date: February 15, 2024
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Nobuyuki ISHIWATARI, Hisako KONDO, Masakazu YOKOMIZO
  • Publication number: 20240052076
    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 comprising methyl methacrylate, a nitrile compound represented by the following Formula (1), and a polymerization inhibitor, in which the concentration of methyl methacrylate is from 99 to 99.99% by mass.
    Type: Application
    Filed: October 24, 2023
    Publication date: February 15, 2024
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Yu Kurihara, Yuki Kato, Tatsuya Suzuki, Wataru Ninomiya
  • Publication number: 20240052184
    Abstract: Provided is a UV-curable water-based ink including at least a UV-curable oligomer, a colorant, and a water-soluble polyfunctional (meth)acrylamide compound, in which the UV-curable oligomer has a structural unit derived from a water-soluble compound and a structural unit derived from a compound containing two or more polymerizable unsaturated bonds.
    Type: Application
    Filed: October 23, 2023
    Publication date: February 15, 2024
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Tamae Karasawa, Keisuke Inaba, Tomoko Nakagawa, Shuhei Sakatani, Kengo Kasai
  • Patent number: 11901535
    Abstract: A partition member which partitions between a pair of unit batteries or a partition member which partitions between a unit battery and a member other than the unit battery, the thermal resistances ?d1, ?d2, ?p1, and ?p2 of the partition member satisfy (?p1/?p2)/(?d1/?d2)?1.0×10?4.
    Type: Grant
    Filed: May 29, 2020
    Date of Patent: February 13, 2024
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Yoko Watanabe, Tomohiro Kawai
  • Patent number: 11898003
    Abstract: A polyester resin has excellent adhesiveness and excellent grindability. The polyester resin includes a constitutional unit A derived from a carboxylic acid having a cyclic structure and containing 5 or more carboxyl groups, a constitutional unit derived from a dicarboxylic acid, and a constitutional unit derived from a polyhydric alcohol. The constitutional unit A has a content of 0.01 parts by mole or more and 45 parts by mole or less with respect to 100 parts by mole of the constitutional unit derived from a dicarboxylic acid. The hydroxyl value of the polyester resin is 6 mgKOH/g or more and 27 mgKOH/g or less.
    Type: Grant
    Filed: May 13, 2021
    Date of Patent: February 13, 2024
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Yuka Tachibana, Tadahiro Ozawa, Asako Kaneko
  • Patent number: 11898090
    Abstract: A diverting agent which has performance to release filling due to biodegradability, can be quickly removed after a certain period of time, and has an excellent filling property with respect to a fracture in a well is provided. The diverting agent contains particles having a particle diameter of 1,700 ?m or more in an amount of 10 to 70 mass %, particles having a particle diameter of 500 ?m or more and less than 1,700 ?m in an amount of 20 to 80 mass %, and particles having a particle diameter of less than 250 ?m in an amount of 5 to 40 mass %, and the diverting agent contains a biodegradable resin in an amount of 10 mass % or more.
    Type: Grant
    Filed: December 28, 2021
    Date of Patent: February 13, 2024
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Chizuko Furo, Yuya Kanamori, Yasuhiro Hirano