Patents Assigned to Mitsubishi Gas Chemical Company, Inc.
  • Patent number: 11951720
    Abstract: Provided is a thermoplastic resin laminate suitable for optical applications of transparent substrate materials and protective materials. The thermoplastic resin laminate includes a first layer including an amorphous polyester resin (A) as the main component, and a second layer including a (meth)acrylic resin (B) as the main component on the first layer.
    Type: Grant
    Filed: October 21, 2019
    Date of Patent: April 9, 2024
    Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Ken Taguwa, Nobuyuki Koike
  • Patent number: 11945906
    Abstract: Provided are an epoxy resin curing agent containing an amine composition or a modified product thereof, wherein the amine composition contains bis(aminomethyl)cyclohexane (A), a compound (B) represented by the specific formula (1), and a compound (C) represented by the specific formula (2), and wherein a mass ratio of the component (B) to the component (C) [(B)/(C)] is from 0.01 to 5.0, an epoxy resin composition, and use of an amine composition for an epoxy resin curing agent.
    Type: Grant
    Filed: August 19, 2021
    Date of Patent: April 2, 2024
    Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Kousuke Ikeuchi, Kazuki Kouno, Yuma Ohno, Emi Ota, Aoi Yokoo
  • Patent number: 11945791
    Abstract: The present invention makes it possible to provide a compound represented by formula (1) and a composition for an optical material containing this compound. (Where m+n=4, m represents an integer of from 0 to 3, and n represents an integer of from 1 to 4.) In addition, the present invention makes it possible to provide a method for producing an optical material, the method including a step for adding 0.0001-10 parts by mass of a polymerization catalyst per 100 parts by mass of the composition for an optical material, polymerizing, and curing.
    Type: Grant
    Filed: August 1, 2019
    Date of Patent: April 2, 2024
    Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Kouhei Takemura, Hiroshi Horikoshi
  • Publication number: 20240100473
    Abstract: A carbon dioxide absorbent containing an amine compound (A) having a heterocyclic structure (X) selected from the group consisting of an oxygen-containing heterocyclic structure and a sulfur-containing heterocyclic structure, a content of the amine compound (A) being 65% by mass or more.
    Type: Application
    Filed: December 20, 2021
    Publication date: March 28, 2024
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Kazuki KOUNO, Yuki KAWASHIMA, Ryo ASAI, Tomoaki KIRINO
  • Patent number: 11939447
    Abstract: A thermosetting composition including a thermosetting compound and hexagonal boron nitride D, wherein the thermosetting compound contains a cyanate compound A and/or a maleimide compound B, and a modified polyphenylene ether C having a substituent with a carbon-carbon unsaturated double bond at at least one terminal, and a content of the hexagonal boron nitride D is 0.1 parts by mass or more and 25 parts by mass or less based on 100 parts by mass of the thermosetting compound.
    Type: Grant
    Filed: April 2, 2019
    Date of Patent: March 26, 2024
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Yoshihiro Nakazumi, Kentaro Takano
  • Patent number: 11938676
    Abstract: Provided is a molding technique with which a molding operation is performed smoothly, preventing the production of defective products. Also provided is a molding apparatus including a nozzle, a guide member guiding a molding material to the nozzle, and a heating device, the molding apparatus being further provided with a prevention structure configured to prevent the molding material from melting during transportation through the guide member.
    Type: Grant
    Filed: August 15, 2019
    Date of Patent: March 26, 2024
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Nobuki Hirooka, Masao Yamawaki
  • Patent number: 11939420
    Abstract: Provided are an epoxy resin curing agent containing an amine composition or a modified product thereof, wherein the amine composition contains bis(aminomethyl)cyclohexane (A) and a compound (B) represented by the following formula (1), and wherein the content of the component (B) based on 100 parts by mass of the component (A) is from 1.5 to 20.0 parts by mass, an epoxy resin composition, and an epoxy resin curing agent for an amine composition. In the formula (1), R1 is an alkyl group having 1 to 6 carbon atoms optionally having a hydroxy group, R2NHCH2—, where R2 represents an alkyl group having 1 to 6 carbon atoms, or a group represented by the following formula (1A), and p is a number of 0 to 2. In the formula (1A), R3 represents a hydrogen atom or NH2—.
    Type: Grant
    Filed: August 19, 2021
    Date of Patent: March 26, 2024
    Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Yuma Ohno, Kazuki Kouno, Kousuke Ikeuchi, Emi Ota, Aoi Yokoo
  • Publication number: 20240092975
    Abstract: A bisimide phenyl ester acid dianhydride represented by the following formula (2): where R3 and R4 each independently represents a hydrogen atom or an organic group having 1 to 10 carbon atoms; each m is independently an integer of 1 to 4; and each A independently represents an aromatic ring or an alicyclic ring.
    Type: Application
    Filed: November 8, 2023
    Publication date: March 21, 2024
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Tatsuya HIKICHI, Daiki WAKAHARA, Nobuyoshi OHNISHI
  • Patent number: 11932741
    Abstract: To provide a method for manufacturing a novel molded article using a commingled yarn and a composite material using a commingled yarn. The method for manufacturing a molded article, includes disposing a commingled yarn containing a continuous reinforcing fiber and a continuous thermoplastic resin fiber on a part of a surface of a prepreg, the prepreg containing continuous reinforcing fibers paralleling at least unidirectionally, and a thermosetting resin impregnated between the continuous reinforcing fibers, and heat-processing the prepreg with the commingled yarn.
    Type: Grant
    Filed: June 12, 2020
    Date of Patent: March 19, 2024
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Nobuhiko Matsumoto, Kousuke Ikeuchi
  • Patent number: 11935803
    Abstract: A resin composition that has excellent flux activity, flexibility and storage stability and that is suitable for a pre-applied underfill material is provided. The resin composition contains a compound (A) having a phenolic hydroxy group, a metal ion trapping agent (B) and a radical polymerizable compound (C).
    Type: Grant
    Filed: April 24, 2019
    Date of Patent: March 19, 2024
    Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Masashi Okaniwa, Takenori Takiguchi, Kohei Higashiguchi, Tsuyoshi Kida
  • Publication number: 20240085789
    Abstract: A photosensitive polyimide resin composition containing: a ring-closed polyimide resin (A) having a structure represented by Formula (1) and a weight average molecular weight of 70000 or less; and a polyfunctional radically polymerizable compound (B) having 4 or more and 100 or less radically polymerizable functional groups.
    Type: Application
    Filed: November 10, 2021
    Publication date: March 14, 2024
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Yumi SATO, Daichi MIYAHARA, Miho UMEKI
  • Patent number: 11926126
    Abstract: The present application realizes an anti-reflection film or the like that is a layered product having low surface reflectivity, excellent thermoformability, and satisfactory abrasion resistance. This anti-reflection film includes: a base material layer including a thermoplastic resin; and a low-refractive-index layer which is stacked on at least one surface of the base material layer and which has a refractive index that is lower than the refractive index of the base material layer, wherein the low-refractive-index layer includes a polymer of a first resin material including a fluorine-containing urethane acrylate and a (meth)acrylate.
    Type: Grant
    Filed: February 20, 2019
    Date of Patent: March 12, 2024
    Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Fumiaki Kakeya, Yasutaka Fukunaga, Ryota Kato
  • Patent number: 11926904
    Abstract: Provided are an aqueous composition with which the surface of stainless steel is adequately roughened in an efficient manner with few steps, a method for roughening stainless steel, etc. The problem mentioned above is solved by an aqueous composition for roughening the surface of stainless steel, the aqueous composition including 0.1-20 mass % of hydrogen peroxide with reference to the total amount of the aqueous composition, 0.25-40 mass % of copper ions with reference to the total amount of the aqueous composition, and 1-30 mass % of halide ions with reference to the total amount of the aqueous composition.
    Type: Grant
    Filed: June 3, 2020
    Date of Patent: March 12, 2024
    Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Kazuhiko Ikeda, Tomoko Fujii, Hiroshi Matsunaga, Satoshi Tamai
  • Publication number: 20240076446
    Abstract: A polyester resin containing: a diol constituent unit containing a unit a1 derived from spiroglycol represented by formula (1) and a unit a2 derived from ethylene glycol; and a dicarboxylic acid constituent unit containing a unit b derived from terephthalic acid and/or an ester thereof. A content of the unit a1 is from 5 to 60 mol % and a content of the unit a2 is from 30 to 95 mol %, based on a total amount of the unit a1 and the unit a2. A content of the unit b is from 80 to 100 mol % based on a total amount of the dicarboxylic acid constituent unit.
    Type: Application
    Filed: November 2, 2023
    Publication date: March 7, 2024
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Katsumi SHINOHARA, Kazua SATO, Hiroki IKARASHI
  • Patent number: 11919877
    Abstract: The present invention enables provision of a production method for 1,2,3,5,6-pentathiepane, the method comprising, in the following order, step A for reacting a trithiocarbonate, sulfur, and a methane dihalide together using a phase-transfer catalyst in a multilayer system having a water layer and an organic layer, step B for separating the water layer from the organic layer, and step C for stopping the reaction using an acid.
    Type: Grant
    Filed: March 5, 2019
    Date of Patent: March 5, 2024
    Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Hiroyuki Tanagi, Kouhei Takemura, Hiroshi Horikoshi
  • Patent number: 11924979
    Abstract: A resin composition that has both excellent flux activity and high insulation reliability, that possesses good storage stability, and that further has flexibility with good operability upon being used as a laminate is provided. The resin composition contains a chelating flux agent (A), a thermal radical polymerization initiator (B) and a radical polymerizable compound (C).
    Type: Grant
    Filed: April 24, 2019
    Date of Patent: March 5, 2024
    Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Masashi Okaniwa, Takenori Takiguchi, Kohei Higashiguchi, Tsuyoshi Kida
  • Patent number: 11919833
    Abstract: Provided is a method for producing a methyl-adduct compound, the method including methylating, in the presence of potassium carbonate and dimethyl carbonate, a dinitrile compound represented by Formula (1) below to obtain a methyl-adduct compound represented by Formula (2) below: where in Formula (2), R1˜R4 each independently represent hydrogen or methyl, and from one to three of R1˜R4 are each methyl.
    Type: Grant
    Filed: April 12, 2022
    Date of Patent: March 5, 2024
    Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Aoi Yokoo Yamazoe, Yutaka Kanbara
  • Patent number: 11911341
    Abstract: Provided is a multilayer vessel excellent in gas barrier performance and transparency and its application. The multilayer vessel contains a layer (X) that contains at least one type of polyolefin resin as the major ingredient; and a layer (Y) that contains a polyamide resin (A) as the major ingredient, the polyamide resin (A) being composed of a structural unit derived from diamine, and a structural unit derived from dicarboxylic acid, 70 mol % or more of the structural unit derived from diamine being derived from metaxylylenediamine, meanwhile 30 to 60 mol % of the structural unit derived from dicarboxylic acid being derived from straight chain aliphatic ?,?-dicarboxylic acid having 4 to 20 carbon atoms, and 70 to 40 mol % being derived from isophthalic acid.
    Type: Grant
    Filed: February 15, 2017
    Date of Patent: February 27, 2024
    Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Shota Arakawa, Toshiya Naito, Satoshi Okada, Kenichiro Usuda, Takumi Toida, Haruka Okazaki, Fumihiro Ito
  • Patent number: 11905391
    Abstract: The present invention provides a rubber composition comprising: a guanidine fatty acid salt (A), which is a salt of guanidine and a fatty acid; natural rubber and/or synthetic rubber (B); and an inorganic filler (C).
    Type: Grant
    Filed: July 11, 2019
    Date of Patent: February 20, 2024
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Takuya Kageyama, Maya Okaniwa, Susumu Innan
  • Publication number: 20240052105
    Abstract: A composition that includes Compound (a) and Compound (b). Compound (a) is represented by formula (1): where: Ar represents an aromatic ring; m represents an integer of 2 to 8; n represents an integer of 0 to 6, provided that m+n is the number of carbon atoms constituting the aromatic ring, or less; and R1 each independently represents an alkylthio group, a halogen group, a hydroxy group, a dialkylthiocarbamoyl group, or a dialkylcarbamoylthio group. Compound (b) is represented by formula (2): where p represents an integer of 0 to 4, and q represents an integer of 0 to 2.
    Type: Application
    Filed: October 4, 2021
    Publication date: February 15, 2024
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Yousuke IMAGAWA, Kouhei TAKEMURA, Ryosuke SUGIHARA, Mariko SADO