Patents Assigned to Mitsubishi Chemical Corporation
  • Patent number: 11834603
    Abstract: A heat dissipation sheet 10 includes cohesive inorganic filler particles 1 having a breaking strength of 20 MPa or lower and a modulus of elasticity of 48 MPa or higher and a matrix resin 2.
    Type: Grant
    Filed: September 16, 2020
    Date of Patent: December 5, 2023
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Toshiyuki Sawamura, Toshiyuki Tanaka, Akira Watanabe, Katsuhiko Hidaka
  • Patent number: 11833468
    Abstract: Provided is a method for separating ammonia gas using zeolite membrane having excellent separation stability at a high temperature capable of separating ammonia gas from a mixed gas composed of multiple components including ammonia gas, hydrogen gas, and nitrogen gas to the permeation side with high selectivity and high permeability. Also provided is a method for separating ammonia by selectively permeating ammonia gas from a mixed gas containing at least ammonia gas, hydrogen gas, and nitrogen gas using a zeolite membrane, wherein the ammonia gas concentration in the mixed gas is 1.0% by volume or more.
    Type: Grant
    Filed: June 2, 2022
    Date of Patent: December 5, 2023
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Manabu Tanaka, Takeshi Matsuo, Takayuki Aoshima
  • Patent number: 11837705
    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. × 10 - 3 ? ( m 2 · K / W ) , and ( Expression ? 1 ) ? 2 ? 4. × 10 - 3 ? ( m 2 · K / W ) ( Expression ? 2 ) .
    Type: Grant
    Filed: March 25, 2022
    Date of Patent: December 5, 2023
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Yoko Watanabe, Tomohiro Kawai, Iwao Soga
  • Patent number: 11837742
    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: Grant
    Filed: September 24, 2020
    Date of Patent: December 5, 2023
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Tatsuhiko Honda, Naoto Maru
  • Publication number: 20230383077
    Abstract: There is provided a prepreg containing carbon fibers and a matrix resin, where the matrix resin contains an epoxy resin, a curing agent, a monofunctional (meth)acrylate monomer having a molecular weight of 200 or more, and a polyfunctional (meth)acrylate monomer.
    Type: Application
    Filed: August 3, 2023
    Publication date: November 30, 2023
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Takuya AKITA, Yasuhiro FUKUHARA
  • Patent number: 11826940
    Abstract: A production method for a fiber-reinforced thermoplastic resin composite material, the method using a crosshead die (1) that has a maximum aperture height of 1 mm or more, wherein reinforcing fibers are supplied in a reinforcing fiber bundle to the crosshead die (1), the reinforcing fibers are conjugated with a melted thermoplastic resin, and the conjugate is brought into contact with a pressurization surface that is at or below the solidification temperature of the thermoplastic resin, is pressurized, and is shaped to have a thickness that is 50% or less of the aperture height.
    Type: Grant
    Filed: September 17, 2015
    Date of Patent: November 28, 2023
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventor: Osamu Okunaka
  • Publication number: 20230378435
    Abstract: A lithium secondary battery comprising: a positive electrode and a negative electrode which each has a specific composition and specific properties; and a nonaqueous electrolyte which contains a cyclic siloxane compound represented by general formula (1), fluorosilane compound represented by general formula (2), compound represented by general formula (3), compound having an S—F bond in the molecule, nitric acid salt, nitrous acid salt, monofluorophosphoric acid salt, difluorophosphoric acid salt, acetic acid salt, or propionic acid salt in an amount of 10 ppm or more of the whole nonaqueous electrolyte. This lithium secondary battery has a high capacity, long life, and high output. [In general formula (1), R1 and R2 are an organic group having 1-12 carbon atoms and n is an integer of 3-10. In general formula (2), R3 to R5 are an organic group having 1-12 carbon atoms; x is an integer of 1-3; and p, q, and r each are an integer of 0-3, provided that 1?p+q+r?3.
    Type: Application
    Filed: August 1, 2023
    Publication date: November 23, 2023
    Applicants: MITSUBISHI CHEMICAL CORPORATION, MU IONIC SOLUTIONS CORPORATION
    Inventors: Hidekazu Miyagi, Ryoichi Kato
  • Publication number: 20230374236
    Abstract: A prepreg containing a matrix resin containing: a polyetherimide resin (A) having a repeating unit represented by General Formula (A); and carbon fibers, in which the matrix resin satisfies Condition (1). Condition (1): A tensile elongation at break (T1) of a film, obtained by extrusion-molding the matrix resin into a film shape, in a TD direction, and a tensile elongation at break (T2) of the film in the TD direction after immersing of the film for 1,000 hours in a specific oil at 23° C. are measured, and a tensile elongation retention rate obtained by Expression (1) is 15% or greater and 90% or less. Tensile Elongation Retention Rate=(Tensile Elongation at Break (T2)/Tensile Elongation at Break (T1))×100 . . . (1) (in Formula (a), m is a number of 5 to 1,500.
    Type: Application
    Filed: August 3, 2023
    Publication date: November 23, 2023
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Yuma FURUHASHI, Kazuya OKADA
  • Publication number: 20230374383
    Abstract: An etching composition that includes a quaternary ammonium salt having 8 or more carbon atoms and selectively dissolves silicon over silicon germanium, and may further include a chelating agent, an etching method comprising etching a structure that contains silicon and silicon germanium by using the etching composition, a method for manufacturing a semiconductor device, and a method for manufacturing a gate-all-around-type transistor using the etching composition.
    Type: Application
    Filed: July 7, 2023
    Publication date: November 23, 2023
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Ken Harada, Tatsunobu Suzuki, Mari Abe
  • Patent number: 11821201
    Abstract: An object of the present invention is to provide a sound insulating sheet member that has high sound-insulating performance which exceeds mass law while being relatively light weight, that is highly flexible in design, excellent in versatility, and easy to manufacture so that productivity and economic efficiency can be improved, and a sound insulating structural body or the like using the same. The object thereof is achieved by using a sound insulating sheet member comprising at least a sheet having rubber elasticity and a plurality of resonant portions, wherein the resonant portions are provided in contact with a sheet surface of the sheet, each of the resonant portions including a base part and a weight part, and the weight part being supported by the base part and having a larger mass than the base part.
    Type: Grant
    Filed: September 30, 2021
    Date of Patent: November 21, 2023
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Shogo Koga, Shuichi Akasaka
  • Publication number: 20230357554
    Abstract: An ethylene-vinyl alcohol copolymer composition that contains an ethylene-vinyl alcohol copolymer (A), an unmodified polyolefin (B), and an acid-modified polyolefin (C). The mass ratio [(B)/(C)] between the unmodified polyolefin (B) and the acid-modified polyolefin (C) is 75/25 to 1/99. The melt viscosity ratio [(?1)/(?2)] between the melt viscosity (?1) of the composition at 210° C. and a shear rate of 18 (sec-1) and the melt viscosity (?2) of the composition at 210° C. and a shear rate of 365 (sec-1) is 5.6 or more. The mass ratio [(A)/((B)+(C))] between the ethylene-vinyl alcohol copolymer (A) and the total content of the unmodified polyolefin (B) and the acid-modified polyolefin (C) is 60/40 or more and less than 75/25.
    Type: Application
    Filed: July 18, 2023
    Publication date: November 9, 2023
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Kota INOUE, Daichi MORITA
  • Publication number: 20230357022
    Abstract: A film-like graphite that satisfies the following condition (1) or condition (2) described below. Condition (1): a graphite crystal orientation degree P is 96% or more with respect to a film plane. Condition (2): a graphite crystal orientation degree P is 94% or more with respect to a film plane and a thickness is 42 ?m or more.
    Type: Application
    Filed: July 19, 2023
    Publication date: November 9, 2023
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Kenji HIRANO, Keisuke WADA, Tomoyoshi YAMASHITA, Norimichi KAWABE, Takuya SUZUKI, Miwa YANAGIDATE, Kouhei TAKATANI
  • Patent number: 11810782
    Abstract: A conductive C-plane GaN substrate has a resistivity of 2×10?2 ?·cm or less or an n-type carrier concentration of 1×1018 cm?3 or more at room temperature. At least one virtual line segment with a length of 40 mm can be drawn at least on one main surface of the substrate. The line segment satisfies at least one of the following conditions (A1) and (B1): (A1) when an XRC of (004) reflection is measured at 1 mm intervals on the line segment, a maximum value of XRC-FWHMs across all measurement points is less than 30 arcsec; and (B1) when an XRC of the (004) reflection is measured at 1 mm intervals on the line segment, a difference between maximum and minimum values of XRC peak angles across all the measurement points is less than 0.2°.
    Type: Grant
    Filed: December 9, 2020
    Date of Patent: November 7, 2023
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Yutaka Mikawa, Hideo Fujisawa, Tae Mochizuki, Hideo Namita, Shinichiro Kawabata
  • Publication number: 20230348663
    Abstract: A polyester resin containing a constitutional unit derived from at least one of a polyhydric alcohol derived from biomass and a polyvalent carboxylic acid derived from biomass, and a constitutional unit derived from polyethylene terephthalate, in which a ratio of carbon atoms derived from the polyethylene terephthalate is 5% to 40% with respect to 100% of all carbon atoms, and a methyl ethyl ketone insoluble matter is 5% by mass or less.
    Type: Application
    Filed: July 3, 2023
    Publication date: November 2, 2023
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Yoko TAMURA, Yuka KAWAI
  • Publication number: 20230352686
    Abstract: A method for producing a carbon material may include: granulating a raw carbon material by applying mechanical energy comprising impact, compression, friction, and/or shear force. The granulating may be carried out in the presence of a granulating agent. The granulating agent may be liquid during the granulating of the raw carbon material. Alternatively or in addition, the granulating agent may include no organic solvent, an organic solvent having no flash point, or no organic solvent having a flash point of 5° C. or higher.
    Type: Application
    Filed: June 9, 2023
    Publication date: November 2, 2023
    Applicant: 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: 20230340259
    Abstract: The present invention relates to a resin composition containing a polycarbonate resin (A) and a polymer (B), in which the polymer (B) is a copolymer containing a polymer chain (B1) and a polymer chain (B2); the polymer chain (B1) has a glass transition temperature (Tg) of higher than 80° C.; the polymer chain (B2) has a glass transition temperature (Tg) of lower than 0° C.; and a refractive index difference between the polycarbonate resin (A) and the polymer chain (B2) is less than 0.026.
    Type: Application
    Filed: May 25, 2023
    Publication date: October 26, 2023
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Go OTANI, Akikazu MATSUMOTO
  • Publication number: 20230343990
    Abstract: Provided is a nonaqueous electrolyte secondary battery, including a positive electrode with a positive electrode active material capable of absorbing and releasing a metal ion; a negative electrode with a negative electrode active material capable of absorbing and releasing a metal ion; and a nonaqueous electrolyte solution; wherein the positive electrode active material includes a lithium transition metal compound, and the positive electrode active material includes at least Ni, Mn and Co, wherein the molar ratio of Mn/(Ni+Mn+Co) is larger than 0 and not larger than 0.28, the molar ratio of Ni/(Ni+Mn+Co) is 0.45 or more, the plate density of the positive electrode is 3.3 g/cm3 or more; and the nonaqueous electrolyte solution includes a monofluorophosphate and/or a difluorophosphate. A total content of the monofluorophosphate and/or difluorophosphate is 0.01% by mass or more in terms of the concentration in the nonaqueous electrolyte solution.
    Type: Application
    Filed: June 26, 2023
    Publication date: October 26, 2023
    Applicants: Mitsubishi Chemical Corporation, MU IONIC SOLUTIONS CORPORATION
    Inventors: Koichi NISHIO, Jungmin KIM
  • Publication number: 20230340196
    Abstract: A method for producing bisphenol A (BPA) is provided. The method includes step A of degrading a polycarbonate resin in a solvent and distilling off the solvent to obtain a crude solution A; step B of subjecting acetone and phenol to dehydration condensation; step C of distilling off unreacted acetone and water to obtain a concentrated liquid C; step D of crystallizing the concentrated liquid C to obtain a slurry liquid, from which a mother liquor D is obtained; step H of obtaining a solution H1 or a solution H2 from the crude solution A and part of the mother liquor D; and step I of supplying the solution H1 or H2 to the step B or C. The solution H1 contains BPA obtained by degrading BPA contained in the crude solution A and the mother liquor D into phenol and isopropenylphenol and then rebonding phenol and isopropenylphenol, and the solution H2 contains phenol obtained by degrading BPA contained in the crude solution A and the mother liquor D into phenol and acetone.
    Type: Application
    Filed: June 27, 2023
    Publication date: October 26, 2023
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Kei Uchiyama, Kazuhisa Hatakeyama
  • Publication number: 20230339219
    Abstract: The present invention relates to a laminate including a protection layer, a barrier layer, and a heat sealing layer, in which a product of a tensile elastic modulus A in a reference direction, a tensile elastic modulus B in a direction forming an angle of 45° with respect to the reference direction, and a tensile elastic modulus C in a direction forming an angle of 90° with respect to the reference direction is 0.22 (GPa)3 or less, and a value of the tensile elastic modulus B to the tensile elastic modulus A, a value of the tensile elastic modulus C to the tensile elastic modulus A, and a value of the tensile elastic modulus C to the tensile elastic modulus B are each 0.1 to 10.
    Type: Application
    Filed: June 28, 2023
    Publication date: October 26, 2023
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Shinji NAKANISHI, Kohei OURA, Yoshitaka MATSUMURA
  • Publication number: 20230340216
    Abstract: A water-soluble polyvinyl alcohol film mainly containing a polyvinyl alcohol resin (A), wherein the polyvinyl alcohol resin (A) includes: a polyvinyl alcohol resin (a1) having a 4 mass % aqueous solution viscosity of not lower than 21 mPa·s at 20° C. as a main component of the polyvinyl alcohol resin (A); and a polyvinyl alcohol (a2) resin satisfying the following requirements (?) and (?) with respect to the polyvinyl alcohol resin (a1): (?) the polyvinyl alcohol resin (a2) has a 4 mass % aqueous solution viscosity that is higher than the 4 mass % aqueous solution viscosity of the polyvinyl alcohol resin (a1) as measured at 20° C., and (?) a difference in average saponification degree between the polyvinyl alcohol resin (a1) and the polyvinyl alcohol resin (a2) is not greater than 5 mol % in absolute value.
    Type: Application
    Filed: June 29, 2023
    Publication date: October 26, 2023
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventor: Taisuke TAKAKURA