Patents Assigned to Mitsubishi Chemical Corporation
  • CATALYST, METHOD FOR PRODUCING ISOBUTYL ALDEHYDE AND METHACROLEIN, METHOD FOR PRODUCING METHACRYLIC ACID, AND METHOD FOR PRODUCING METHACRYLIC ACID ESTER
    Publication number: 20230018899
    Abstract: There is provided a catalyst having an average electronegativity of 2.1 or more and 2.8 or less.
    Type: Application
    Filed: September 9, 2022
    Publication date: January 19, 2023
    Applicants: Mitsubishi Chemical Corporation, NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITY
    Inventors: Tatsuya SUZUKI, Yuuki KATOU, Wataru NINOMIYA, Takao MASUDA, Yuta NAKASAKA, Takuya YOSHIKAWA, Shohei YAMASHITA
  • Polyorganosiloxane-containing graft copolymer powder, and resin composition using the same, and molded article formed of the same
    Patent number: 11548968
    Abstract: An object of the present invention is to provide a polyorganosiloxane-containing graft copolymer powder capable of providing a resin composition and a molded article which are excellent in balance between colorability and mechanical properties such as impact resistance. The polyorganosiloxane-containing graft copolymer powder according to the present invention is a graft copolymer powder obtained by graft-polymerizing a mixture (B) of a vinyl monomer (b1) having an epoxy group and another vinyl monomer (b2) to a rubber (A) containing a polyorganosiloxane, wherein the content of the polyorganosiloxane (A1) contained in the rubber (A) is 12 to 50% by mass, the mass average particle diameter of the polyorganosiloxane-containing graft copolymer powder is 300 to 2000 nm, and the epoxy equivalent of the polyorganosiloxane-containing graft copolymer powder is 2500 to 7800 g/eq.
    Type: Grant
    Filed: August 24, 2020
    Date of Patent: January 10, 2023
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Kenta Takemasu, Masahiro Ueda, Shinji Matsuoka, Hiroya Arai, Misaki Hagi, Masashi Iimori
  • RESIN COMPOSITION, METHOD FOR MANUFACTURING RESIN COMPOSITION, MOLDED OBJECT, MULTILAYER STRUCTURE, AND PACKAGING BODY
    Publication number: 20230002603
    Abstract: A resin composition containing: a thermoplastic resin (A) that does not contain a polar group; a thermoplastic resin (B) that contains a polar group; an ethylene-vinyl alcohol copolymer (C) having an ethylene content of 20 to 60 mol %; an aliphatic carboxylic acid (D) having 3 or more carbon atoms; and an aliphatic carboxylic acid metal salt (E) that is a metal salt of the aliphatic carboxylic acid (D), wherein a metal species of (E) is at least one selected from the group consisting of elements belonging to the fourth period d-block in the long periodic table, the content of (A) is 66 to 99 wt. % with respect to the total sum of contents of the resin composition, and the content of (C) is 0.1 to 25 wt. % with respect to the total sum of the contents of the resin composition.
    Type: Application
    Filed: September 13, 2022
    Publication date: January 5, 2023
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventor: Ryohei KOMURO
  • METHOD FOR PRODUCING POLYVINYL ALCOHOL RESIN
    Publication number: 20230002519
    Abstract: A method for producing a polyvinyl alcohol resin having an absorbance of not less than 0.2 at 280 nm, which includes: melt-kneading a polyvinyl alcohol resin material; extruding the resulting melt-kneaded polyvinyl alcohol resin into a sheet; cooling the resulting polyvinyl alcohol resin sheet; and pulverizing the cooled polyvinyl alcohol resin sheet. The method ensures a higher productivity and an excellent long-run property.
    Type: Application
    Filed: September 7, 2022
    Publication date: January 5, 2023
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Yoshihito YAMAUCHI, Norihito SAKAI
  • Copolymer, Resin Composition, Molded Product, Filmy Molded Product, and Method for Producing Copolymer
    Publication number: 20230002528
    Abstract: Provided is a copolymer which has a mass average molecular weight (Mw) of 240,000 or greater and 3,500,000 or less, a structural unit derived from an acrylate (B1) and a structural unit derived from aromatic vinyl (B2), and a branched structure.
    Type: Application
    Filed: August 26, 2022
    Publication date: January 5, 2023
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Go Otani, Yu Tokura, Akira Yamauchi
  • EPOXY RESIN COMPOSITION, CURED PRODUCT, AND ELECTRICAL/ELECTRONIC COMPONENT
    Publication number: 20230002543
    Abstract: An epoxy resin composition (A), having an epoxy resin represented by formula (1): and an epoxy resin represented by formula (2): where R1 is a linear aliphatic hydrocarbon group having 1 to 6 carbon atoms, and n is an integer of 0 or 1. An epoxy resin composition (B), having 100 parts by weight of the epoxy resin composition (A) and 0.01 to 1,000 parts by weight of a curing agent.
    Type: Application
    Filed: August 25, 2022
    Publication date: January 5, 2023
    Applicant: Mitsubishi Chemical Corporation
    Inventor: Kazumasa OTA
  • ADHESIVE COMPOSITION, ADHESIVE AGENT, ADHESIVE TAPE, AND AIRTIGHT WATERPROOF ADHESIVE TAPE
    Publication number: 20230002649
    Abstract: An adhesive composition that is excellent in both adhesiveness and a holding force while having high flame retardancy. The adhesive composition contains an acrylic resin (A) containing a (meth)acrylic acid monomer (a1) unit and a hydroxyl group-containing monomer (a2) unit, an epoxy crosslinking agent (b1), an isocyanate crosslinking agent (b2), and a flame retardant (C).
    Type: Application
    Filed: August 31, 2022
    Publication date: January 5, 2023
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventor: Masashi ISEKI
  • Iridium Complex Compound, Iridium-Complex-Compound-Containing Composition, Organic Electroluminescent Element and Method for Producing Same, Organic EL Display Device, and Organic EL Illuminator
    Publication number: 20230002428
    Abstract: The present invention relates to an iridium complex compound represented by the following formula (1): in the formula (1), Ir represents an iridium atom, R5 to R14, R21, and R22 each independently represent a hydrogen atom, D, F, Cl, Br, I, or a substituent group, the groups adjacent to each other may be further bonded to each other to form a ring, and any one of R12 and R13 is a substituent group represented by the formula (2).
    Type: Application
    Filed: August 10, 2022
    Publication date: January 5, 2023
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Kazuhiro Nagayama, Akane Kato, Mami Yamashita, Tomohiro Abe, Daisuke Hiro
  • COMPOSITION CONTAINING SEMICONDUCTOR NANOPARTICLES, COLOR FILTER, AND IMAGE DISPLAY DEVICE
    Publication number: 20220411692
    Abstract: Provided is a semiconductor nanoparticle-containing composition capable of forming a wavelength conversion layer that efficiently converts the wavelength of excitation light and exhibits sufficient luminescence intensity. An aspect of the semiconductor nanoparticle-containing composition of the present invention contains semiconductor nanoparticles (A) and a coloring matter (B) and further contains a polymerizable compound (C), in which the semiconductor nanoparticles (A) have a maximum emission wavelength in the range of 500 to 670 nm over a wavelength range of 300 to 780 nm, and the coloring matter (B) contains at least one selected from coloring matters (B1) to (B5) having specific structures.
    Type: Application
    Filed: August 5, 2022
    Publication date: December 29, 2022
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Koki ISHII, Masaaki NISHIMURA, Takashi FUJIWARA, Tomotaka TANIGUCHI, Shigeki HATTORI, Shiharu HIRAOKA, Yasushi SHIGA, Hiroko INAGAKI
  • CATALYST, METHOD FOR PRODUCING ISOBUTYLENE, METHOD FOR PRODUCING METHACRYLIC ACID, AND METHOD FOR PRODUCING METHYL METHACRYLATE
    Publication number: 20220411349
    Abstract: There is provided a catalyst that enables the production of isobutylene with a high selectivity in the production of isobutylene by dehydration of isobutanol. The catalyst according to the present invention contains at least one metal selected from Group 6 to Group 14 metal elements in Period 4 to Period 6 of the periodic table, in alumina which includes alumina consisting of one or more crystal phases of a monoclinic crystal phase, a tetragonal crystal phase, and a cubic crystal phase.
    Type: Application
    Filed: August 30, 2022
    Publication date: December 29, 2022
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Tatsuya SUZUKI, Akio TAKEDA, Yuuki KATOU, Wataru NINOMIYA
  • POLYESTER PRESSURE-SENSITIVE ADHESIVE COMPOSITION, POLYESTER PRESSURE-SENSITIVE ADHESIVE, PRESSURE-SENSITIVE ADHESIVE SHEET AND OPTICAL MEMBER WITH PRESSURE-SENSITIVE ADHESIVE LAYER
    Publication number: 20220411671
    Abstract: A polyester pressure-sensitive adhesive composition is provided including a polyester resin having a predetermined amount of a structural unit derived from a hydrogenated polybutadiene structure-containing compound, or a polyester resin having a structural unit derived from a hydrogenated polybutadiene structure-containing compound and a predetermined amount of a structural unit derived from an aromatic ring structure-containing compound. The polyester pressure-sensitive adhesive composition has superior adhesion to a polyolefin base material and is highly transparency.
    Type: Application
    Filed: August 29, 2022
    Publication date: December 29, 2022
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventor: Kento SAKAMOTO
  • POLYMER FINE PARTICLES HAVING STRUCTURAL COLOR DEVELOPMENT PROPERTY
    Publication number: 20220411620
    Abstract: Polymer fine particles having a number average particle diameter of 50 to 450 nm and a CV value of particle diameter on a number basis of 5% or less, or polymer fine particles having a structural color development property when arranged. An acid value of the polymer fine particles is 5 to 38 mg KOH/g. An emulsion in which the polymer fine particles are dispersed in a medium mainly containing water. In addition, a structure in which the polymer fine particles are arranged and develop color.
    Type: Application
    Filed: September 6, 2022
    Publication date: December 29, 2022
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Shota NAKAHARA, Masaya OTA, Kousuke MINETAKI, Kenta YAMAMOTO
  • Double-sided pressure-sensitive adhesive sheet, laminate comprising component member for image display device, kit for laminate formation, and use of double-sided pressure-sensitive adhesive sheet
    Patent number: 11535777
    Abstract: To provide a double-sided pressure-sensitive adhesive sheet having high flexing resistance that does not suffer flexure and exfoliation in a flexing test that is closer to the actual use environment. A double-sided pressure-sensitive adhesive sheet having no substrate, containing a pressure-sensitive adhesive composition containing a (meth)acrylate ester (co)polymer (A), and having a glass transition temperature (Tg) defined by a Tan ? peak temperature of dynamic viscoelasticity in a range of ?50° C. to ?20° C., a storage elastic modulus G? at a frequency of 1 Hz and a temperature 100° C. in a range of 2.0×103 to 3.0×104 Pa, and a thickness of 10 ?m or more and 150 ?m or less.
    Type: Grant
    Filed: September 20, 2019
    Date of Patent: December 27, 2022
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Takahisa Uchida, Naoya Miara, Hidejirou Yoshikawa, Ryouta Yamamoto, Shinya Fukuda
  • Ethylene-vinyl alcohol copolymer composition, pellets, multilayer structure, and multilayer pipe
    Patent number: 11535723
    Abstract: An ethylene-vinyl alcohol copolymer composition contains: (A) an ethylene-vinyl alcohol copolymer; (B) an antioxidant; and (C) an iron compound; wherein the iron compound (C) is present in an amount of 0.01 to 20 ppm on a metal basis based on the weight of the ethylene-vinyl alcohol copolymer composition. The ethylene-vinyl alcohol copolymer composition is excellent in degradation resistance.
    Type: Grant
    Filed: December 6, 2019
    Date of Patent: December 27, 2022
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Shintaro Usui, Daichi Nishimura, Minako Ikeshita
  • Ethylene-vinyl alcohol copolymer resin composition, multilayer structure and package
    Patent number: 11535724
    Abstract: An ethylene-vinyl alcohol copolymer resin composition, including: an ethylene-vinyl alcohol copolymer (A); acetic acid and/or a salt thereof (B); an aliphatic carboxylic acid (C) other than acetic acid; and an aliphatic carboxylic acid metal salt (D), wherein a metal species of the salt (D) is at least one selected from long Periodic Table 4th-period d-block elements, and wherein respective contents of the acetic acid and/or the salt thereof (B), the acid (C), and the salt (D) satisfy the following formulae (1) and (2) on a weight basis is provided. The resin composition is excellent in impact resistance and adhesive strength even without being blended with any other resin: 0.001?(content of (D) in terms of metal ion/content of (B) in terms of acetic acid ion)?1.30??(1) 0.11?(content of (D) in terms of metal ion/content of (C) in terms of carboxylic acid ion)?100??(2).
    Type: Grant
    Filed: June 23, 2021
    Date of Patent: December 27, 2022
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventor: Ryohei Komuro
  • CARBON MATERIAL FOR NEGATIVE ELECTRODE OF NON-AQUEOUS SECONDARY BATTERY, NEGATIVE ELECTRODE FOR NON-AQUEOUS SECONDARY BATTERY, AND NON-AQUEOUS SECONDARY BATTERY
    Publication number: 20220407070
    Abstract: An object of the present invention is to provide a carbon material for negative electrodes of non-aqueous secondary batteries having a high capacity, a high output, excellent cycle characteristics and a low irreversible capacity. The present invention relates to a carbon material for negative electrodes of non-aqueous secondary batteries, the carbon material comprising: (1) a composite carbon particles (A) containing elemental silicon, and (2) amorphous composite graphite particles (B) in which graphite particles (C) and amorphous carbon are composited.
    Type: Application
    Filed: August 19, 2022
    Publication date: December 22, 2022
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Daigo NAGAYAMA, Tooru Fuse
  • Method for Separating Water-Containing Crystals, Method for Producing Methacrylic Acid, and Method for Producing Methacrylic Acid Ester
    Publication number: 20220396543
    Abstract: Provided is a method for separating water-containing crystals, the method including: a step of generating water-containing crystals from a mixed liquid including water, acetic acid, and methacrylic acid; and a step of separating the crystals, in which the proportion by mass of methacrylic acid with respect to the total mass of water, acetic acid, and methacrylic acid in the mixed liquid is 0.09% by mass or more and less than 0.60% by mass.
    Type: Application
    Filed: August 19, 2022
    Publication date: December 15, 2022
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Ryutaro Ishibashi, Koji Kanaya, Yugo Mizokoshi
  • FIBER MOLDED BODY FOR SOUND ABSORBING/SOUND INSULATION MATERIALS
    Publication number: 20220389631
    Abstract: There is provided a fiber molded body for sound absorbing/sound insulation materials, which is lightweight and has excellent sound absorption performance. The fiber molded body for sound absorbing/sound insulation materials of the present invention is a fiber molded body for sound absorbing/sound insulation materials comprising uncolored ultrafine chemical fibers and colored fibers or reclaimed fibers, wherein the single fiber fineness of the ultrafine chemical fibers is 0.01 to 0.5 dtex, the content of the ultrafine chemical fibers is 5 to 70 mass % and the content of the colored fibers or the reclaimed fibers is 20 to 60 mass %, in the fiber molded body for sound absorbing/sound insulation materials.
    Type: Application
    Filed: August 18, 2022
    Publication date: December 8, 2022
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Masaki FUJIE, Tatsuhiko INAGAKI
  • Catalyst
    Publication number: 20220387976
    Abstract: An object of the present invention is to provide a catalyst capable of improving the selectivity of unsaturated aldehydes and unsaturated carboxylic acids, and a catalyst containing molybdenum, antimony, bismuth, and iron, wherein an atom ratio of the antimony to the molybdenum on a surface of the catalyst is greater than an atom ratio of the antimony to the molybdenum in the entire catalyst is provided.
    Type: Application
    Filed: August 10, 2022
    Publication date: December 8, 2022
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Kensuke Nishiki, Takuro Watanabe, Tetsufumi Yamaguchi
  • LAMINATE AND METHOD FOR MANUFACTURING LAMINATE
    Publication number: 20220389240
    Abstract: A laminate including a base material and a resin layer provided on at least one surface of the base material. The resin layer is formed of a heat- or active energy ray-curable resin composition, and an outermost surface of the laminate on the one surface side of the base material has an unevenness containing a wrinkle structure.
    Type: Application
    Filed: August 15, 2022
    Publication date: December 8, 2022
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Takuya UEMATSU, Hideto YANAGIHARA, Kaori TANIYAMA, Shinichiro KANAI