Patents Assigned to Mitsubishi Chemical
  • Publication number: 20240158552
    Abstract: Provided is a monomer composition containing methyl methacrylate and methyl isobutyrate, in which the methyl isobutyrate content is more than 300 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: May 16, 2024
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Hiroaki ITO, Yusuke HIRANO, Issei TANIGUCHI, Manabu ISOMURA, Kouichi KANEMORI
  • Patent number: 11981951
    Abstract: The present invention relates to a process for the production of methyl methacrylate. The process of the present invention comprises the steps of: a) providing a microorganism in a fermentation medium, under conditions which said microorganism will produce a C3-C12 methacrylate ester; b) providing an organic phase in contact with the fermentation medium, said organic phase including C3-C12 methacrylate ester in a higher concentration than that in the fermentation medium; c) removing organic phase containing the said C3-C12 methacrylate ester from contact with the fermentation medium; and d) transesterifying the removed C3-C12 methacrylate ester with methanol, optionally after separation from the organic phase, to produce methyl methacrylate.
    Type: Grant
    Filed: November 22, 2017
    Date of Patent: May 14, 2024
    Assignee: Mitsubishi Chemical UK Limited
    Inventors: Graham Ronald Eastham, Zoe Bethany Clare Disley, David William Johnson, Gill Stephens, Mark Waugh
  • Publication number: 20240154170
    Abstract: A nonaqueous electrolyte secondary battery including: a positive electrode; a negative electrode; and a nonaqueous electrolyte solution is provided. The negative electrode contains a graphite and a metal compound-based material containing Si or a Si metal oxide, and the nonaqueous electrolyte solution includes at least one compound of Formula (A) and Formula (B): wherein R1 to R3 each independently represent an alkyl group having 1 to 10 carbon atoms which optionally has a substituent, or an aryl group having 6 to 18 carbon atoms which optionally has a substituent, and X represents hydrogen, an alkenyl group having 2 to 10 carbon atoms or an alkynyl group having 2 to 10 carbon atoms; and R4 to R6 each independently represent a hydrocarbon group having 1 to 20 carbon atoms which optionally has a substituent, Y represents S, NH or NR7, and R7 represents a hydrocarbon group having 1 to 20 carbon atoms.
    Type: Application
    Filed: January 16, 2024
    Publication date: May 9, 2024
    Applicants: Mitsubishi Chemical Corporation, MU IONIC SOLUTIONS CORPORATION
    Inventors: Atsushi WATARAI, Eiji NAKAZAWA, Shuhei SAWA
  • Publication number: 20240154318
    Abstract: A structure contains a first member formed from a thermoplastic resin composition A and a second member formed from a thermoplastic resin composition B, the first member and the second member being joined at least partially, wherein the thermoplastic resin composition A molded into a molding with a thickness of 2 mm has a transmittance of 70.0% or more at a frequency of 76.5 GHz; the thermoplastic resin composition B molded into a molding with a thickness of 2 mm has a transmittance of less than 50.0% at a frequency of 76.5 GHz; and the thermoplastic resin composition B molded into a molding with a thickness of 2 mm has an absorbance of 40.0% or more at a frequency of 76.
    Type: Application
    Filed: December 14, 2023
    Publication date: May 9, 2024
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Shuta ISEKI, Hidekazu SHOJI
  • Publication number: 20240149569
    Abstract: To provide a resin composition, and the molded product formed from the resin composition. The resin composition contains a crystalline thermoplastic resin (A) and an acid-modified polymer (B), wherein a content of the crystalline thermoplastic resin (A) in the resin composition is higher than a content of the acid-modified polymer (B) in the resin composition, and a content of acid in the resin composition is 0.5% by mass or more.
    Type: Application
    Filed: January 12, 2024
    Publication date: May 9, 2024
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventor: Rina KOBAYASHI
  • Patent number: 11975318
    Abstract: A method may load granules into reaction tubes of a vertical multitube reactor installed vertically by dropping the granules from above each of the reaction tubes whereby a linear member is inserted and suspended in the reaction tube. The reaction tube has an effective length of ?1000 mm. The linear member includes a small-diameter portion positioned on an upper side and large-diameter portion continuously extending from the small-diameter portion. The small-diameter portion has an outer diameter (Ra) of ?5.0 mm, and the large-diameter portion has an outer diameter (Rb) of 5.0 to 15.0 mm larger than Ra. A length of the small-diameter portion from reaction tube's upper end is 10.0 mm or more. A distance between an upper surface of a granule loaded layer formed inside the reaction tube and a lower end of the linear member inserted in the reaction tube is ?100 mm.
    Type: Grant
    Filed: August 2, 2021
    Date of Patent: May 7, 2024
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Takuya Nakamura, Daisaku Kaneko
  • Patent number: 11976189
    Abstract: A thermoplastic resin composition comprising a graft copolymer (A), a vinyl copolymer (B), and a metal component (C), wherein: an amount of the metal component (C) is 60 ppm or more relative to a total mass of the thermoplastic resin composition, the graft copolymer (A) is a graft polymer obtained by polymerizing 80% by mass to 20% by mass of a vinyl monomer mixture (m1) including at least one type of vinyl monomer in the presence of 20% by mass to 80% by mass of a rubbery polymer (a) including a polyorganosiloxane and an alkyl (meth)acrylate polymer, the vinyl copolymer (B) is a vinyl copolymer obtained by polymerizing a vinyl monomer mixture (m2) including an alkyl (meth)acrylate monomer, and the metal component (C) is an alkali metal.
    Type: Grant
    Filed: March 25, 2022
    Date of Patent: May 7, 2024
    Assignees: TECHNO-UMG CO., LTD., MITSUBISHI CHEMICAL CORPORATION
    Inventors: Kentaro Hiraishi, Naotoshi Oohashi, Ichiro Kamata
  • Publication number: 20240147833
    Abstract: An iridium complex compound denoted by a formula (1) below. An iridium complex compound which have high solvent solubility and can further improve the luminous efficiency and driving life of the device is provided. [In the formula (1), Ir represents an iridium atom. n is 1 or 2. Ar is a structure represented by a formula (2) below. In the formula (2), a dashed line represents a bond of Ar in the formula (1). m is an integer from m=n+1 to n+5. The substituents R and R1 in the formulas (1) and (2) are preferable a hydrogen atom or D.
    Type: Application
    Filed: November 20, 2023
    Publication date: May 2, 2024
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Kazuhiro Nagayama, Kazuki Okabe, Itsumi Nishio, Mayuko Nara
  • Publication number: 20240141569
    Abstract: A method of manufacturing a sheet molding compound (SMC) according to an aspect of the present invention comprises: (i) drawing out a carrier film from a roll to travel on a conveyance path such that the surface of the carrier film is horizontal; (ii) cutting a continuous carbon fiber bundle into short carbon fiber bundles with a chopper disposed above the conveyance path; (iii) allowing the short carbon fiber bundles to fall onto the carrier film traveling on the conveyance path while dispersing them using a dispersing roll disposed below the chopper to deposit a carbon fiber mat on the carrier film; (iv) impregnating the carbon fiber mat with a thermosetting resin composition to obtain a resin-impregnated carbon fiber mat; and v) concurrently with the deposition of the carbon fiber mat, removing fiber dust generated from the short carbon fiber bundles due to contact with the dispersing roll using a dust collector.
    Type: Application
    Filed: January 4, 2024
    Publication date: May 2, 2024
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Kentaro Oda, Yasushi Watanabe, Tadao Samejima, Yukihiro Mizutori
  • Patent number: 11970791
    Abstract: Provided are carbon fiber bundles which have high knot strength even if the single fiber fineness is large, and which have excellent handling properties and processability. The carbon fiber bundles have a single fiber fineness of 0.8-2.5 dtex, knot strength of 298 N/mm2 or greater. This method of producing carbon fibers having knot strength of 298 N/mm2 or greater involves a heat treatment step for heat treating, for 50-150 minutes, specific polyacrylonitrile-based precursor fiber bundles described in the description in an oxidizing atmosphere rising in temperature in the temperature range of 220-300° C.
    Type: Grant
    Filed: November 16, 2020
    Date of Patent: April 30, 2024
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Takayuki Kiriyama, Naoki Sugiura, Masahiro Hata
  • Publication number: 20240134296
    Abstract: The present disclosure relates to an electrophotographic photoreceptor including at least a photosensitive layer and a protective layer in sequence on a conductive support, and the protective layer contains a cured product of a curable compound, conductive particles having a band gap of 2.0 eV or more and 3.6 eV or less, and particles having a band gap of 8.0 eV or more.
    Type: Application
    Filed: December 8, 2023
    Publication date: April 25, 2024
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Takahiro Choda, Daisuke Yamazaki, Akira Ando
  • Patent number: 11964446
    Abstract: A continuous production system continuously produces a product from a raw material powder. The system includes a first processor that performs a first process on the raw material powder, a second processor that performs a second process on the powder on which the first process has been performed by the first processor, and a test chamber through which the powder being sent from the first processor to the second processor passes. A cleaner blows gas from an inlet side opening formed in the inner face of a channel connected to the test chamber from the first processor on the downstream side of an inlet side gate valve for opening and closing the channel toward a direction to form a swirling flow along the inner face of the channel.
    Type: Grant
    Filed: December 19, 2019
    Date of Patent: April 23, 2024
    Assignee: MITSUBISHI CHEMICAL ENGINEERING CORPORATION
    Inventors: Akihiro Matsuki, Nobuhiro Tanaka, Katsuhiro Murata, Hironobu Takeda
  • Publication number: 20240124685
    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, a pyrazine compound represented by Formula (1) (component A1), and a polymerization inhibitor (Component B1), in which the concentration of methyl methacrylate is from 99 to 99.99% by mass.
    Type: Application
    Filed: December 4, 2023
    Publication date: April 18, 2024
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Yu Kurihara, Tatsuya Suzuki, Yuki Kato, Wataru Ninomiya, Maiko Kakimoto
  • Publication number: 20240124752
    Abstract: Provided is the following as an adhesive sheet having excellent flexibility at low temperature and excellent recovering ability. An adhesive sheet formed from an adhesive composition [I]containing an acrylic polymer (A), wherein the acrylic polymer (A) has a structural portion derived from a compound (a1) represented by (Formula 1) and a structural portion derived from a hydroxy group-containing (meth)acrylate (a2), and the adhesive sheet has a storage shearing elastic modulus (G?) at ?40° C. of not greater than 1,200 kPa, CH2?CH(R1)—COO(R2)??(Formula 1) wherein R1 represents a hydrogen atom or a methyl group, and R2 represents a linear or branched alkyl group having 5 to 20 carbon atoms.
    Type: Application
    Filed: December 8, 2023
    Publication date: April 18, 2024
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Kazunobu Tada, Masaya Minemoto
  • Publication number: 20240128511
    Abstract: A nonaqueous electrolyte solution including at least an electrolyte, and a nonaqueous solvent, wherein the nonaqueous electrolyte solution contains a compound represented by the following general formula (A): wherein R1 to R3 represent optionally substituted organic groups having 1 to 20 carbon atoms, and a cyclic carbonate compound having a fluorine atom in an amount of 0.01% by mass to 50.
    Type: Application
    Filed: December 27, 2023
    Publication date: April 18, 2024
    Applicants: Mitsubishi Chemical Corporation, MU IONIC SOLUTIONS CORPORATION
    Inventors: Eiji NAKAZAWA, Yoichi OOHASHI, Minoru KOTATO, Takamichi MITSUI, Takayuki AOSHIMA, Takeshi NAKAMURA
  • Patent number: 11961996
    Abstract: Provided are: a negative electrode material for nonaqueous secondary batteries, which can yield a high-capacity nonaqueous secondary battery having excellent discharge rate characteristics; and a negative electrode for nonaqueous secondary batteries and a nonaqueous secondary battery. Also provided is a nonaqueous secondary battery having excellent charge-discharge efficiency. The negative electrode material for nonaqueous secondary batteries includes carbonaceous particles (A) and silicon oxide particles (B), and satisfies the followings: a) the average particle size (50% cumulative particle size from the smaller particle side; d50) is 3 ?m to 30 ?m, and the 10% cumulative particle size from the smaller particle side (d10) is 0.1 ?m to 10 ?m; b) the ratio (R1=d90/d10) between the 90% cumulative particle size from the smaller particle side (d90) and the d10 is 3 to 20; and c) the ratio (R2=d50/d10) between the d50 and the d10 is 1.7 to 5.
    Type: Grant
    Filed: May 22, 2019
    Date of Patent: April 16, 2024
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Shunsuke Yamada, Nobuyuki Ishiwatari, Naoto Maru, Atsushi Watarai
  • Patent number: 11959197
    Abstract: A first aspect of the present invention is carbon fiber wherein the surface of a monofilament has a center line average roughness Ra of 6.0 nm or more and 13 nm or less, and the monofilament has a long diameter/short diameter ratio of 1.11 or more and 1.245 or less. A second aspect of the present invention is carbon fiber precursor acrylic fiber wherein the surface of a monofilament has a center line average roughness Ra of 18 nm or more and 27 nm or less, and the monofilament has a long diameter/short diameter ratio of 1.11 or more and 1.245 or less. The carbon fiber according to the first aspect is obtained by stabilizing and carbonizing under specific conditions the carbon fiber precursor acrylic fiber according to the second aspect.
    Type: Grant
    Filed: August 15, 2019
    Date of Patent: April 16, 2024
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Naomasa Matsuyama, Yuutarou Nakamura, Norifumi Hirota, Hiroko Matsumura, Katsuhiko Ikeda, Kouki Wakabayashi, Tadashi Ootani, Akihiro Itou, Kenji Hirano, Akito Hatayama, Kenji Kaneta, Atsushi Nakajima
  • Publication number: 20240116031
    Abstract: An object of the present invention is to provide a catalyst that enables production of an unsaturated carboxylic acid and/or unsaturated carboxylic acid ester represented by methyl methacrylate with high selectivity. The object is achieved by a catalyst including: one or more elements selected from boron, magnesium, zirconium, hafnium, and titanium; one or more elements selected from alkali metal elements; and silica; the catalyst having a peak height ratio I2/I1 of 0 to 1.2, wherein I1 represents the peak height at 417±10 cm?1, and I2 represents the peak height at 1050±10 cm?1, as obtained by Raman spectroscopy.
    Type: Application
    Filed: November 30, 2023
    Publication date: April 11, 2024
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Akio Hayashi, Yuuki Tsujimoto, Toshio Hasegawa, Kazufumi Nishida, Masaya Fujisue, Wataru Ninomiya
  • Publication number: 20240120605
    Abstract: A partition member, which separates objects to be separated from each other, includes a porous sheet, and a water absorbing material provided at least either on a surface of the porous sheet or inside the porous sheet. The partition member that has dimensions of 100 mm×60 mm and has been stored for 24 hours at a temperature of 25° C., a humidity of 40%, and an atmospheric pressure of 1 atm is used as a sample, and a ratio of a water absorption volume when a portion of 10 mm from an lower end of a 60 mm side of the sample is immersed in water for 2 minutes, to a volume of the sample {the water absorption volume (cm3) divided by a volume (cm3) of the partition member} is in a range of 0.1 to 0.9.
    Type: Application
    Filed: December 21, 2023
    Publication date: April 11, 2024
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Tomohiro KAWAI, Kei HASHIMOTO
  • Publication number: 20240117248
    Abstract: A phosphor having a favorable emission peak wavelength, narrow full width at half maximum, and/or high emission intensity is provided. Additionally, a light-emitting device, an illumination device, an image display device, and/or an indicator lamp for a vehicle having favorable color rendering, color reproducibility and/or favorable conversion efficiency are provided. The present invention relates to a phosphor including a crystal phase having a composition represented by a specific formula, and having a minimum reflectance of 20% or more in a specific wavelength region, in which the specific wavelength region is from the emission peak wavelength of the phosphor to 800 nm, and a light-emitting device comprising the phosphor.
    Type: Application
    Filed: December 4, 2023
    Publication date: April 11, 2024
    Applicants: Mitsubishi Chemical Corporation, NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Tomoyuki KURUSHIMA, Yuhei Inata, Naoto Hirosaki