Patents Assigned to Mitsubishi Chemical Corporation
  • Zeolite catalyst and method for producing lower olefin
    Patent number: 11766667
    Abstract: A CON zeolite satisfying the following (1) to (2): (1) The framework is CON as per the code specified by the International Zeolite Association (IZA); and (2) It contains silicon and aluminum, and the molar ratio of aluminum to silicon is 0.04 or more.
    Type: Grant
    Filed: March 8, 2021
    Date of Patent: September 26, 2023
    Assignees: Mitsubishi Chemical Corporation, JAPAN TECHNOLOGICAL RESEARCH ASSOCIATION OF ARTIFICIAL PHOTOSYNTHETIC CHEMICAL PROCESS
    Inventors: Hiroaki Onozuka, Masahiro Hara, Masato Yoshioka, Toshiyuki Yokoi
  • (Meth)acrylic copolymer, coating material composition, coated article and method for forming multilayer coating film
    Patent number: 11767446
    Abstract: Provided is a coating material composition that enables an efficient repair operation of a coating film after coating, a (meth)acrylic copolymer that is suitable for obtaining the coating material composition, and a coated article and a method for forming a multilayer coating film using the coating material composition. The (meth)acrylic copolymer includes: a constituent unit derived from a macromonomer (a); and a constituent unit derived from a vinyl monomer (b), a hydroxyl value of the (meth)acrylic copolymer is equal to or greater than 120 mgKOH/g and equal to or less than 260 mgKOH/g, and the content of a constituent unit that has a primary hydroxyl group of the (meth)acrylic copolymer is equal to or less than 30 parts by mass with respect to 100 parts by mass of the constituent unit derived from the macromonomer (a) and the constituent unit derived from the vinyl monomer (b).
    Type: Grant
    Filed: May 2, 2019
    Date of Patent: September 26, 2023
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Takuhiro Ishii, Junichi Nakamura, Shinsuke Haraguchi
  • White laminated film and recording material
    Patent number: 11766853
    Abstract: In order to provide an extremely cost-advantageous laminated white film for use as a recording material that is an information printing medium in place of paper such as copy paper, proposed is a laminated white film having a functional layer comprising an antistatic agent on at least one surface of a polyester film having an apparent density of 0.7 to 1.3 g/cm3 and a thickness of 10 to 1000 ?m, wherein the polyester film comprises a polyester-incompatible polymer.
    Type: Grant
    Filed: August 28, 2019
    Date of Patent: September 26, 2023
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Hidetaka Kimura, Keita Kawanami, Taishi Kawasaki
  • PREPREG, MOLDED ARTICLE AND EPOXY RESIN COMPOSITION
    Publication number: 20230295389
    Abstract: Provided are a prepreg and an epoxy resin composition that can shorten the combustion time of a molded article. The present invention comprises a prepreg which is formed by impregnating a carbon fiber base material with an epoxy resin composition, wherein the epoxy resin composition comprises component (A): an organic phosphinate metal salt, component (B): an epoxy resin having an oxazolidone structure, and component (C): an imidazole compound or an imidazole compound derivative, and may comprise component (D) a urea compound.
    Type: Application
    Filed: May 3, 2023
    Publication date: September 21, 2023
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Nao KAWAMURA, Yasuhiro Fukuhara, Yuji Misumi
  • ELECTROPHOTOGRAPHIC PHOTORECEPTOR, ELECTROPHOTOGRAPHIC PHOTORECEPTOR CARTRIDGE, AND IMAGE FORMING DEVICE
    Publication number: 20230296995
    Abstract: There is provided an electrophotographic photoreceptor including: a conductive support; and a photosensitive layer and a protective layer containing a cured product obtained by curing a curable compound, which are sequentially disposed on the conductive support. The photoreceptor has a Martens hardness of 255 N/mm2 or more. The photosensitive layer contains at least a hole transport material (HTM), and an energy difference between a HOMO level and a LUMO level of the hole transport material (HTM) is greater than 3.6 eV and 4.0 eV or less.
    Type: Application
    Filed: April 18, 2023
    Publication date: September 21, 2023
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Takahiro Choda, Akira Ando
  • ADHESIVE COMPOSITION, ADHESIVE, ADHESIVE SHEET, AND ADHESIVE SHEET FOR IMAGE DISPLAY DEVICE
    Publication number: 20230295476
    Abstract: The present disclosure provides an adhesive composition comprising an acrylic resin (A) and a hydrophilicity imparting agent (B), wherein the acrylic resin (A) is a copolymer of a copolymerization component (a) containing a methacrylic acid alkyl ester monomer having an alkyl chain with 10 to 36 carbon atoms (a1), and a polar group-containing ethylenic unsaturated monomer (a2), the content of the polar group-containing ethylenic unsaturated monomer (a2) is less than 3 wt. % with respect to the copolymerization component (a), and the hydrophilicity imparting agent (B) contains a compound (B1) that has a structure represented by —(CnH2nO)m— (n is 2 to 6 and m is 2 to 25) and contains at least one ethylenic unsaturated group.
    Type: Application
    Filed: May 19, 2023
    Publication date: September 21, 2023
    Applicant: Mitsubishi Chemical Corporation
    Inventor: Tetsuya Asano
  • ADHESIVE, ADHESIVE FOR BONDING DISSIMILAR MATERIALS, ADHESIVE SHEET, AND ADHESIVE SHEET FOR BONDING DISSIMILAR MATERIALS
    Publication number: 20230295467
    Abstract: An epoxy adhesive that includes an epoxy resin (A) and a curing agent (B), with the epoxy resin (A) including a bisphenol-A epoxy resin (A1), a bisphenol-F epoxy resin (A2) and a rubber-modified epoxy resin (A3). The content ratio [(A1)/(A2)] of the bisphenol-A epoxy resin (A1) to the bisphenol-F epoxy resin (A2) is less than 2.7.
    Type: Application
    Filed: May 25, 2023
    Publication date: September 21, 2023
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Seiji TAKAGI, Masashi IKEDA
  • ADHESIVE COMPOSITION FOR COATING-TYPE POLARIZATION ELEMENTS, ADHESIVE SHEET FOR COATING-TYPE POLARIZATION ELEMENTS, ADHESIVE SHEET FOR IMAGE DISPLAY DEVICE CONSTITUTING MEMBERS, ADHESIVE SHEET WITH MOLD RELEASE FILMS, ADHESIVE SHEET WITH IMAGE DISPLAY DEVICE CONSTITUTING MEMBER, LAMINATE SHEET, COATING-TYPE POLARIZATION ELEMENT WITH ADHESIVE LAYER, ADHESIVE SHEET WITH POLARIZATION ELEMENT, AND IMAGE DISPLAY DEVICE
    Publication number: 20230295477
    Abstract: Provided is an adhesive composition for coating-type polarization elements containing a (meta)acrylic polymer (A), an ultraviolet absorber (B), and a radical polymerization initiator (C), wherein an adhesive layer formed from the adhesive composition has a transmittance at a wavelength of 400 nm of 50% or less, and the adhesive composition can be used in combination with a coating-type polarization element to prevent the coating-type polarization element from deteriorating polarization performance over time due to exposure.
    Type: Application
    Filed: May 25, 2023
    Publication date: September 21, 2023
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Kohei Hirose, Terutsune Osawa
  • PHOSPHOR, LIGHT-EMITTING DEVICE, ILLUMINATION DEVICE, IMAGE DISPLAY DEVICE, AND INDICATOR LAMP FOR VEHICLE
    Publication number: 20230287267
    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: March 29, 2023
    Publication date: September 14, 2023
    Applicants: Mitsubishi Chemical Corporation, NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Tomoyuki KURUSHIMA, Yuhei Inata, Naoto Hirosaki
  • Laminated substrate using fiber-reinforced thermoplastic plastic, and molded product manufacturing method using same
    Patent number: 11752728
    Abstract: Provided is a laminated substrate wherein a sheet-shaped material with a porosity of 50-99% is laminated onto at least one surface of a prepreg substrate which includes a reinforcing fiber and a thermoplastic resin.
    Type: Grant
    Filed: January 26, 2021
    Date of Patent: September 12, 2023
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Takeshi Ishikawa, Hayato Ogasawara, Masao Tomioka
  • ACTIVE ENERGY RAY-CURABLE COMPOSITION, AQUEOUS EMULSION COMPOSITION, LAMINATE, AND COATING AGENT COMPOSITION
    Publication number: 20230279211
    Abstract: An active energy ray-curable composition that is of a forced emulsification type, has a high non-volatile content, has excellent storage stability at room temperature and high temperature, and has excellent freeze-thaw stability, in which a coating film to be coated on a substrate has excellent adhesiveness and water resistance; an aqueous emulsion composition; a laminate; and a coating agent composition are provided. In an active energy ray-curable composition containing two or more kinds of surfactants, at least one kind of the surfactants is a surfactant (B1) having two or more reactive groups. Further, the active energy ray-curable composition is used in an aqueous emulsion composition or a coating agent composition.
    Type: Application
    Filed: April 24, 2023
    Publication date: September 7, 2023
    Applicant: Mitsubishi Chemical Corporation
    Inventor: Shuhei SAKATANI
  • Epoxy resin composition for carbon-fiber-reinforced composite materials, prepreg, and carbon-fiber-reinforced composite material
    Patent number: 11745485
    Abstract: An epoxy resin composition for carbon-fiber-reinforced composite material includes (A) a bisphenol F-type epoxy resin that is liquid at 25° C., (B) a polyfunctional amine-type epoxy resin, and (C) 3,3?-Diaminodiphenyl sulfone. With respect to 100 parts by mass of the entire epoxy resin in the epoxy resin composition, the content of component (A) is 40 to 60 parts by mass, the content of component (B) is 30 to 45 parts by mass, and the total content of components (A) and (B) is 85 to 100 parts by mass. The content of component (C) satisfies 1.04?x/y?1.35, where x is a molar number of active hydrogen atoms in the amine of component (C) and y is a molar number of all epoxy groups in the epoxy resin composition.
    Type: Grant
    Filed: October 16, 2020
    Date of Patent: September 5, 2023
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Yukihiro Harada, Atsushi Nohara
  • Stand-up pouch for retort
    Patent number: 11745483
    Abstract: An object of the present invention is to provide a stand-up pouch for retort which has a high rate of gas barrier property recovery after retort processing and can stably retain high gas barrier properties. The stand-up pouch for retort of the invention comprises a laminate which comprises a base film and, disposed over one surface of the base film, a polyamide resin layer, a saponified ethylene-vinyl ester copolymer layer, and a heat-sealing resin layer, wherein the polyamide resin layer adjoins the saponified ethylene-vinyl ester copolymer layer.
    Type: Grant
    Filed: April 20, 2016
    Date of Patent: September 5, 2023
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventor: Shintaro Usui
  • ELECTROPHOTOGRAPHIC PHOTORECEPTOR, ELECTROPHOTOGRAPHIC PHOTORECEPTOR CARTRIDGE, AND IMAGE FORMING DEVICE
    Publication number: 20230273535
    Abstract: As an electrophotographic photoreceptor including a protective layer (an outermost layer), a photosensitive layer and a conductive support, wherein the protective layer (the outermost layer) comprises a polymer obtained by polymerizing a compound having a chain polymerizable functional group, and the photosensitive layer comprises a hole transport material satisfying the following formula (1) and an electron transport material satisfying the following formula (2): 600?a??(1) 400?b??(2) in the formula (1), a represents a molecular weight of the hole transport material, and in the formula (2), b represents a molecular weight of the electron transport material.
    Type: Application
    Filed: April 18, 2023
    Publication date: August 31, 2023
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Akira Ando, Takahiro Choda
  • Multilayer structure, and standup pouch including the multilayer structure
    Patent number: 11738543
    Abstract: A multilayer structure includes a protective layer, an ethylene-vinyl alcohol copolymer layer, a heat seal resin layer, and an intermediate layer provided between the ethylene-vinyl alcohol copolymer layer and the heat seal resin layer and containing a polypropylene resin, wherein the intermediate layer further contains a hydrocarbon resin having a number average molecular weight of 100 to 3,000, and a softening point of not less than 60° C. and less than 170° C. The multilayer structure satisfies requirements for a lower water vapor permeability and a sufficient heat seal strength, and provides a standup pouch having a smaller gas barrier property change rate after retort treatment.
    Type: Grant
    Filed: September 8, 2021
    Date of Patent: August 29, 2023
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Kohei Oura, Shinji Nakanishi, Mei Takatsuka, Yoshitaka Matsumura
  • GAS SEPARATION METHOD AND GAS SEPARATION APPARATUS
    Publication number: 20230264142
    Abstract: A gas separation method including performing a gas separation operation that separates a source gas into a primary-side gas and a secondary-side gas with a membrane of a membrane module. The source gas contains a combustible component. The gas separation operation includes pressurizing the source gas and supplying the source gas to a primary side of the membrane module and depressurizing a secondary side of the membrane module to a pressure lower than an atmospheric pressure. The primary-side gas has a higher concentration of the combustible component than the secondary-side gas, and the gas separation method further includes detecting a composition of the secondary-side gas and stopping the gas separation operation in an instance in which the composition enters a specified range.
    Type: Application
    Filed: April 27, 2023
    Publication date: August 24, 2023
    Applicant: Mitsubishi Chemical Corporation
    Inventor: Naoki NOGUCHI
  • ZEOLITE, METHOD FOR PRODUCING ZEOLITE, COMPOSITION, LIQUID COMPOSITION, LIQUID SEALING AGENT, RESIN COMPOSITE MATERIAL, SEALING MATERIAL, METHOD FOR MANUFACTURING SEALING MATERIAL, AND DEVICE
    Publication number: 20230265297
    Abstract: A liquid composition including a resin and an inorganic filler, wherein the inorganic filler comprises a zeolite having a particle size of 1.0 ?m or more and 10 ?m or less and a small particle size inorganic filler having a particle size of 0.1 ?m or more and less than 1.0 ?m.
    Type: Application
    Filed: May 2, 2023
    Publication date: August 24, 2023
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Ryohji OHNISHI, Chie MATSUNAGA, Noriko KATAGIRI, Masashi IKEDA, Jun MATSUI, Takahiko TAKEWAKI
  • VINYL-BASED POLYMER, CURABLE COMPOSITION, AND CURED PRODUCT
    Publication number: 20230265227
    Abstract: Provided is a low-odor polymer which is soluble in a solvent and with which a work environment load can be reduced. In addition, provided are a curable composition using the polymer and a cured product of the curable composition. The vinyl-based polymer of the present invention comprises a terminal structure derived from one or more of 3- to 20-mer of a (meth)acrylic monomer, wherein an acid value is 35 to 300 mgKOH/g.
    Type: Application
    Filed: March 24, 2023
    Publication date: August 24, 2023
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Mayu YAMAGUCHI, Takafumi ASAI, Akira SATO
  • Polymer-containing composition and antifouling coating composition
    Patent number: 11732144
    Abstract: Provided is an antifouling coating composition, which can form a coating film having good hardness and good physical properties and having a wear degree appropriate for expressing a long-term antifouling effect, has a viscosity not being excessively high, and makes it possible to reduce a content of volatile organic compounds, and a polymer-containing composition which is suitable for obtaining the antifouling coating composition. The polymer-containing composition contains a (meth)acryl-based copolymer (A-1), in which the (meth)acryl-based copolymer (A-1) contains a constitutional unit (U11) or a constitutional unit (U12) having carboxylate forming an ionic bond with a divalent metal atom, and has a weight-average molecular weight of 1,000 to 5,000, and the polymer-containing composition has a coating film hardness (Martens hardness) equal to or higher than 2.5 N/mm2.
    Type: Grant
    Filed: February 4, 2021
    Date of Patent: August 22, 2023
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Kana Taniguchi, Sho Katsumata, Junichi Nakamura, Nobuaki Kanazawa
  • Biomass-resource-derived polyester and production process thereof
    Patent number: 11732087
    Abstract: The present invention provides a resin capable of contributing greatly to solve environmental problems and problems related to exhaustion of fossil fuel resources and having physical properties suited for practical use. The polyester according to the present invention has a diol and a dicarboxylic acid as constituent components and has an amount of terminal acid of 50 equivalents/metric ton or less.
    Type: Grant
    Filed: June 16, 2022
    Date of Patent: August 22, 2023
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Takayuki Aoshima, Yasuaki Miki, Katsuhisa Kumazawa, Satoshi Katou, Tadashi Uyeda, Toyomasa Hoshino, Noboru Shintani, Kenji Yamagishi, Atsushi Isotani