Patents Assigned to Mitsubishi Gas Chemical Company, Inc.
  • Patent number: 11898033
    Abstract: An oxymethylene copolymer resin composition, which includes (i) an oxymethylene copolymer, (ii) a derivative of an aryl boron fluoride compound, and (iii) a layered double hydroxide; and a method for producing the same.
    Type: Grant
    Filed: May 31, 2021
    Date of Patent: February 13, 2024
    Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Takuya Okada, Daisuke Sunaga
  • Patent number: 11897980
    Abstract: Provided are: a laminated resin sheet for molding, which is less likely to cause an abnormal appearance during molding, and has an anti-glare layer but has excellent transparency; and a molded article using the same. This laminated resin sheet for molding comprises: a high-hardness resin layer containing a high-hardness resin; a base material layer which contains a polycarbonate resin (a1) and is disposed on one surface side of the high-hardness resin layer; and a hard coat anti-glare layer disposed on the other surface side of the high-hardness resin layer, wherein the glass transition point (Tg1) of the high-hardness resin and the glass transition point (Tg2) of the polycarbonate resin (a1) satisfy the following relationship, and the maximum valley depth (Rv) of the recesses and protrusions of the hard coat anti-glare layer is at most 0.9 ?m ?10° C.?(Tg1?Tg2)?40° C.
    Type: Grant
    Filed: February 3, 2021
    Date of Patent: February 13, 2024
    Assignees: MITSUBISHI GAS CHEMICAL COMPANY, INC., MGC FILSHEET CO., LTD.
    Inventors: Masato Takasaki, Atsuhiro Tokita
  • Publication number: 20240043687
    Abstract: An object is to provide a resin composition having a high permittivity and a low dissipation factor, and also a low coefficient of thermal expansion and a good appearance, and suitably used for producing an insulation layer of a printed wiring board, and a prepreg, a resin sheet, a laminate, a metal foil-clad laminate, and a printed wiring board obtainable by using the resin composition. The resin composition contains: (A) BaTi4O9; (B) a filler different from the BaTi4O9 (A); and (C) a thermosetting resin; wherein a median particle size of the BaTi4O9 (A) is 0.10 to 1.00 ?m, and a volume ratio of the BaTi4O9 (A) to the filler (B), the BaTi4O9(A):the filler (B), ranges from 15:85 to 80:20.
    Type: Application
    Filed: January 26, 2022
    Publication date: February 8, 2024
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Takaaki OGASHIWA, Tetsuro MIYAHIRA, Tatsuro TAKAMURA, Sayaka ITO
  • Publication number: 20240044014
    Abstract: The problem of the present invention is to provide a roughening treatment method in which the surface of stainless steel is sufficiently roughened in an efficient manner with few steps, while maintaining good surface quality of the stainless steel after treatment. The above problem is solved by a roughening treatment method for stainless steel, which comprises a roughening treatment step that uses a first aqueous composition, and a post-treatment step that uses a second aqueous composition. Namely, the roughening treatment step is to roughen the surface of stainless steel containing copper or a metal having an ionization tendency larger than copper by bringing the first aqueous composition into contact with the surface, wherein the first aqueous composition comprises 0.1% to 20% by mass of hydrogen peroxide based on the total amount of the first aqueous composition, 0.
    Type: Application
    Filed: December 13, 2021
    Publication date: February 8, 2024
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Kazuhiko IKEDA, Tomoko FUJII, Hiroshi MATSUNAGA
  • Publication number: 20240047224
    Abstract: A recess etching solution for recess etching a metal wiring in a semiconductor substrate manufacturing process; and a recess etching method employing the same. The recess etching solution is for applying recess etching to a surface of a cobalt-containing metal layer embedded in a via or a trench formed in a semiconductor substrate, and contains (A) an organic acid, one of or both of (B) a nitrogen-containing heterocyclic compound and (C) an organic solvent, and (D) water. The recess etching method includes applying recess etching to a surface of a cobalt-containing metal layer by bringing the recess etching solution into contact with the surface of the cobalt-containing metal layer embedded in a via or a trench formed in a semiconductor substrate.
    Type: Application
    Filed: December 6, 2021
    Publication date: February 8, 2024
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Satoshi OKABE, Toshiyuki OIE, Tomoyuki ADANIYA, Yoshihiro HOMMO, Chung-Yi CHEN, Po-Hung WANG
  • Publication number: 20240044015
    Abstract: The problem of the present invention is to provide an aqueous composition with which the surface of stainless steel is sufficiently roughened in an efficient manner with few steps, while maintaining good quality (e.g., thickness) of the stainless steel after treatment. The above problem is solved by the following aqueous composition for roughening the surface of stainless steel. Namely, the aqueous composition comprises 0.1% to 10% by mass of hydrogen peroxide based on the total amount of the aqueous composition, 1% to 30% by mass of halide ions based on the total amount of the aqueous composition, and 0% to 3% by mass of copper ions based on the total amount of the aqueous composition.
    Type: Application
    Filed: December 13, 2021
    Publication date: February 8, 2024
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Kazuhiko IKEDA, Tomoko FUJII, Hiroshi MATSUNAGA
  • Patent number: 11884054
    Abstract: An objective of the present invention is to provide an anti-reflection film laminate which is for manufacturing an anti-reflection film having low surface reflectance and good anti-reflection properties, as well as excellent thermoformability and scratch resistance. The aforementioned problem is resolved by the following anti-reflection film laminate. This anti-reflection film laminate comprises: a first laminate having a base film that has a release surface, and an optical interference layer laminated on the release surface; and a second laminate having a substrate layer that contains a thermoplastic resin, and an uncured hardcoat layer that is laminated on one surface of the substrate layer and comprises a curable hardcoat composition. The first and second laminate bodies are pressure bonded such that the optical interference layer of the first laminate and the uncured hardcoat layer of the second laminate are in contact with each other.
    Type: Grant
    Filed: March 18, 2020
    Date of Patent: January 30, 2024
    Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Fumiaki Kakeya, Yasutaka Fukunaga
  • Patent number: 11883809
    Abstract: It is desired to develop a method of producing hydrogen peroxide, which is capable of producing hydrogen peroxide with high production efficiency. According to the present invention, provided is a palladium-containing composition comprising palladium particles and a coating agent that coats the surface of the palladium particles, wherein a compound having an O?X structure (wherein X represents any of a phosphorus atom, a sulfur atom, and a carbon atom) is comprised as the coating agent.
    Type: Grant
    Filed: September 12, 2019
    Date of Patent: January 30, 2024
    Assignees: MITSUBISHI GAS CHEMICAL COMPANY, INC., KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION
    Inventors: Tatsumi Ishihara, Norikazu Okuda, Ken-ichi Kimizuka, Ken Tasaki
  • Publication number: 20240027907
    Abstract: A method for producing a patterned substrate, including: step (a) of forming a film composed of a photosensitive polyimide resin composition on a substrate; step (b) of exposing the film; and step (c) of developing the exposed film using a developer to form a pattern formed of the film on the substrate, wherein a relative energy difference (RED) between the developer and the film before exposure is 0.50 or greater and 1.4 or less.
    Type: Application
    Filed: November 10, 2021
    Publication date: January 25, 2024
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Daichi MIYAHARA, Yumi SATO, Miho UMEKI
  • Publication number: 20240018317
    Abstract: An oxygen absorbing resin composition containing a polyolefin, an iron powder, titanium oxide, and calcium oxide, a content of the iron powder being from 10 to 50 mass % in the oxygen absorbing resin composition, a mass ratio of the titanium oxide to the iron powder [titanium oxide/iron powder] being from 0.1 to 0.5, and a mass ratio of the calcium oxide to the iron powder [calcium oxide/iron powder] being from 0.1 to 0.5.
    Type: Application
    Filed: November 15, 2021
    Publication date: January 18, 2024
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Keisuke WATANABE, Yoshiki ITOU
  • Patent number: 11877396
    Abstract: Provided is a laminate containing a first resin composition layer, a heat-resistant film layer, and a second resin composition layer laminated in the presented order, wherein the first resin composition layer is in a semi-cured state (B stage), and a difference between a maximum thickness and a minimum thickness of the first resin composition layer is 0.5 to 5 ?m; and the second resin composition layer is in a semi-cured state (B stage), and a difference between a maximum thickness and a minimum thickness of the second resin composition layer is 0.5 to 5 ?m.
    Type: Grant
    Filed: August 16, 2019
    Date of Patent: January 16, 2024
    Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Syunsuke Hirano, Yoshihiro Kato, Takaaki Ogashiwa
  • Patent number: 11872788
    Abstract: Provided are a multilayered article and a multilayered container excelling in oxygen barrier properties, delamination resistance, and transparency. The multilayered article has a polyester resin layer and a barrier layer. The polyamide resin contained in the barrier layer includes (A) a polyamide resin derived from xylylenediamine and adipic acid, (B) a polyamide resin derived from xylylenediamine, a linear aliphatic dicarboxylic acid, and isophthalic acid, and as necessary, (C) a polyamide resin derived from hexamethylenediamine, isophthalic acid, and terephthalic acid, and (D) an aliphatic polyamide resin. In the barrier layer, a ratio of the mass of the polyamide resin (A) to the total mass of the polyamide resin (B) and the polyamide resin (C) is from 98:2 to 15:85, the total content of the polyamide resin (A) and the polyamide resin (B) is 60 mass % or more, the content of the polyamide resin (B) is from 1 to 65 mass %, and the content of the aliphatic polyamide resin (D) is from 3 to 40 mass %.
    Type: Grant
    Filed: April 22, 2019
    Date of Patent: January 16, 2024
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventor: Takanori Miyabe
  • Patent number: 11873401
    Abstract: An easily tearable film with excellent linear cuttability, as well as a multilayer film, a packaging material, and a container are provided.
    Type: Grant
    Filed: June 29, 2018
    Date of Patent: January 16, 2024
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Kosuke Otsuka, Kaname Sato, Takafumi Oda
  • Patent number: 11866403
    Abstract: The present invention provides a carboxylic acid ester compound represented by formula (1) that is useful as a fragrance component or as a formulated fragrance material, wherein R1 is —COOR, wherein R is an alkyl group having 1 to 4 carbon atoms.
    Type: Grant
    Filed: May 28, 2019
    Date of Patent: January 9, 2024
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Yutaka Matsuura, Tomohiko Hakamata
  • Patent number: 11858240
    Abstract: Provided is a multilayer container including a polyester layer containing a polyester resin (X), and a polyamide layer containing a polyamide resin (Y), a yellowing inhibitor (A), and an oxidation accelerator (B). The content of the polyamide resin (Y) is from 0.05 to 7.0 mass % relative to the total amount of all polyamide layers and all polyester layers. The yellowing inhibitor (A) is a dye, and the content of the yellowing inhibitor (A) is from 1 to 30 ppm relative to the total amount of all polyamide layers and all polyester layers.
    Type: Grant
    Filed: February 25, 2021
    Date of Patent: January 2, 2024
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Kosuke Otsuka, Masayuki Daito, Takumi Yamada
  • Patent number: 11858920
    Abstract: Provided is a composition for optical materials that gives optical materials which can have at least one improved property selected from among satisfactory mold releasability after polymerization and curing, unsusceptibility to separation from the mold during polymerization and curing, transparency, and low-level striae. The present invention further provides a compound represented by formula (1). The composition for optical materials comprises the compound represented by formula (1) and a compound represented by formula (2). (In formula (1), X1 and X2 represent O or S, provided that both X1 and X2 are O or that X1 is O and X2 is S.
    Type: Grant
    Filed: June 27, 2019
    Date of Patent: January 2, 2024
    Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Kouhei Takemura, Yousuke Imagawa, Hiroshi Horikoshi
  • Publication number: 20230416456
    Abstract: According to the present invention, there can be provided a resin composition, comprising: a polycarbonate resin comprising a constituent unit represented by the following general formula (1): wherein R1 to R4 and R11 to R14 each independently hydrogen, fluorine, chlorine, bromine or iodine, etc., a represents an integer of 1 to 1,000, and X represents —S—, etc.; and a carbonate-based organic solvent, wherein the content of the polycarbonate resin in the resin composition is 0.05% to 50% by mass; the content of the carbonate-based organic solvent in the resin composition is 50% to 99.
    Type: Application
    Filed: February 18, 2022
    Publication date: December 28, 2023
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Noriyoshi OGAWA, Toshihito GOTO
  • Publication number: 20230416450
    Abstract: Provided are an epoxy resin curing agent containing an amine composition or a modified product thereof, wherein the amine composition contains metaxylylenediamine and paraxylylenediamine at a mass ratio of 99/1 to 51/49, an epoxy resin composition, and a paint and an adhesive containing these.
    Type: Application
    Filed: September 10, 2021
    Publication date: December 28, 2023
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Takuma HANAOKA, Kazuki KOUNO, Yuma OHNO
  • Publication number: 20230416187
    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: Application
    Filed: April 12, 2022
    Publication date: December 28, 2023
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Aoi YOKOO YAMAZOE, Yutaka KANBARA
  • Publication number: 20230416520
    Abstract: An epoxy resin composition containing an epoxy resin, an epoxy resin curing agent containing an amine-based curing agent, and a polyalkylene glycol, as well as a gas barrier laminate and a packaging material in which the epoxy resin composition is used.
    Type: Application
    Filed: October 6, 2021
    Publication date: December 28, 2023
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Naoko KOBAYASHI, Kazuki KOUNO, Ryoma HASHIMOTO