Patents Assigned to Mitsubishi Chemical Corporation
  • Publication number: 20230322653
    Abstract: A method for producing a bisphenol or the like by using a chemical recycling method that is moderate, has a small environmental load, and can efficiently degrade a polycarbonate resin is provided. In addition, a method for producing a recycled polycarbonate resin or the like by using a useful substance such as the bisphenol or the like is provided. A method for producing a bisphenol, including degrading a polycarbonate resin in the presence of an aromatic monoalcohol, water, and a catalyst. A method for producing carbon dioxide, including recovering carbon dioxide generated by the method for producing a bisphenol. A method for producing a carbonic acid diester by using the carbon dioxide. A method for producing a recycled polycarbonate resin by using the bisphenol and/or the carbonic acid diester.
    Type: Application
    Filed: April 28, 2023
    Publication date: October 12, 2023
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Kei Uchiyama, Makoto Nakamura
  • Patent number: 11784342
    Abstract: Provided is a nonaqueous electrolyte secondary battery, including a positive electrode with a positive electrode active material capable of absorbing and releasing a metal ion; a negative electrode with a negative electrode active material capable of absorbing and releasing a metal ion; and a nonaqueous electrolyte solution; wherein the positive electrode active material includes a lithium transition metal compound, and the positive electrode active material includes at least Ni, Mn and Co, wherein the molar ratio of Mn/(Ni+Mn+Co) is larger than 0 and not larger than 0.32, the molar ratio of Ni/(Ni+Mn+Co) is 0.55 or more, the plate density of the positive electrode is 3.0 g/cm3 or more; and the nonaqueous electrolyte solution includes a monofluorophosphate and/or a difluorophosphate. A total content of the monofluorophosphate and/or difluorophosphate is 0.01% by mass or more in terms of the concentration in the nonaqueous electrolyte solution.
    Type: Grant
    Filed: August 4, 2022
    Date of Patent: October 10, 2023
    Assignees: Mitsubishi Chemical Corporation, MU IONIC SOLUTIONS CORPORATION
    Inventors: Koichi Nishio, Jungmin Kim
  • Patent number: 11780976
    Abstract: To obtain a water-soluble film that is excellent in cold water solubility and is useful as a chemical agent package, provided is a water-soluble film, which is a polyvinyl alcohol water-soluble film including a carboxylic acid-modified polyvinyl alcohol resin (A) as a main component, wherein a lactonization rate of a carboxylic acid modifying group in the carboxylic acid-modified polyvinyl alcohol resin (A) is from 20% to 70%.
    Type: Grant
    Filed: March 3, 2020
    Date of Patent: October 10, 2023
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventor: Takahiro Hiura
  • Publication number: 20230312910
    Abstract: The present invention provides an electrodeposition-coated article production method which is suitable for producing an electrodeposition-coated article comprising a carbon fiber-reinforced plastic. An electrodeposition-coated article production method according to the present invention includes: a molding step of obtaining a carbon fiber-reinforced plastic molded article by curing a prepreg comprising a carbon fiber reinforcement and a thickened product of an epoxy resin composition in which a bisphenol A epoxy resin, [4-(glycidyloxy)phenyl]diglycidylamine and a curing agent component are mixed; and an electrodeposition coating step of coating the carbon fiber-reinforced plastic molded article by electrodeposition. The epoxy resin composition, when cured at 140° C., gives a cured resin which has a glass transition temperature G?-Tg of more than 100° C. and less than 200° C. and in which a dynamic storage elastic modulus G? value at 200° C. is more than or equal to 8% of the value at 100° C.
    Type: Application
    Filed: April 17, 2023
    Publication date: October 5, 2023
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Yuki MIYAHARA, Akira OTA
  • Publication number: 20230314664
    Abstract: A laminated film for a liquid crystal polarizing film may include a base film and a cured resin layer formed from a curable resin composition, having an average value of light transmittances at 300 to 430 nm of 35% or less.
    Type: Application
    Filed: May 24, 2023
    Publication date: October 5, 2023
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Hiroyuki TANIYAMA, Kohei HIROSE, Terutsune OSAWA, Kiyonori KURODA, Koichi NISHIHARA
  • Patent number: 11773249
    Abstract: Provided is a thermoplastic resin composition and a molded article excellent in balance of color developability and low-temperature impact resistance, where a polyorganosiloxane-containing graft copolymer in which a rubber (A) containing a polyorganosiloxane (A1) and a vinyl polymer (A2) is grafted with a vinyl monomer (b), wherein the vinyl polymer (A2) includes 90 to 100% by mass of a monofunctional vinyl monomer (a1) and 10 to 0% by mass of a polyfunctional vinyl monomer (a2) with respect to 100% by mass of the vinyl polymer (A2), wherein the glass transition temperature of the homopolymer of the monofunctional vinyl monomer (a1) is 0° C. or higher, and the peak of tan ? of the polyorganosiloxane-containing graft copolymer is in the range of ?125° C. to ?90° C.
    Type: Grant
    Filed: November 24, 2020
    Date of Patent: October 3, 2023
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Kenta Takemasu, Ayaka Wakita, Shinji Matsuoka, Mitsufumi Nodono, Naotaka Suenaga
  • Patent number: 11772301
    Abstract: A method of manufacturing a hexagonal Group-III nitride semiconductor plate crystal using a crystal cutting wire. where the hexagonal semiconductor crystal has one principal face on one side and another principal face on an opposite side, and the hexagonal semiconductor crystal is cut by causing the crystal cutting wire to move so as to (i) divide the one principal face and the another principal face and (ii) satisfy conditions of Expressions (A) and (B): 25°<??90°??Expression (A); and ?=90°±5°??Expression (B) where ? represents an angle formed by a c axis of the hexagonal Group-III nitride semiconductor crystal and a normal line of a crystal face cut out by the wire, and ? represents an angle formed by a reference axis, which is obtained by perpendicularly projecting the c axis of the hexagonal Group-III nitride semiconductor crystal to the crystal face cut out by the wire, and a cutting direction.
    Type: Grant
    Filed: January 27, 2021
    Date of Patent: October 3, 2023
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Hirofumi Uchida, Yukio Okano
  • Patent number: 11777109
    Abstract: A hydrophilic porous carbon electrode which has excellent hydrophilicity, which has high reaction activity when used for a battery, and with which excellent battery characteristics is able to be obtained is provided. A hydrophilic porous carbon electrode is a sheet-form hydrophilic porous carbon electrode in which a carbon fiber is bonded using a resin carbide and has a contact angles ?A of water on both surfaces in a thickness direction being 0 to 15° and a contact angle ?B of water in a middle portion in the thickness direction being 0 to 15°. The hydrophilic porous carbon electrode is obtained by forming the carbon fiber and a binder fiber into a sheet, impregnating the sheet into a thermosetting resin, subjecting it to heat press processing, and then subjecting it to carbonization at 400 to 3000° C. in an inert atmosphere. The hydrophilic porous carbon electrode is transported and is subjected to a heat treatment while an oxidizing gas flows at 400 to 800° C.
    Type: Grant
    Filed: July 18, 2022
    Date of Patent: October 3, 2023
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Kyu Ota, Hiroto Tatsuno, Kazuhiro Sumioka
  • Publication number: 20230303826
    Abstract: Provided is a resin composition contains, with respect to 100 parts by mass of a thermoplastic resin, 10 to 70 parts by mass of a recycled carbon fiber; and 0.1 to 15 parts by mass of a functional group-containing compound; wherein the recycled carbon fiber is a baked product of a composite of an epoxy resin and a carbon fiber, and comprises 5% by mass or more of a residue derived from the epoxy resin; and an ISO multi-purpose test specimen with a thickness of 4 mm obtained by molding the resin composition has a maximum flexural strength of 130 MPa or more in accordance with ISO 178.
    Type: Application
    Filed: June 1, 2023
    Publication date: September 28, 2023
    Applicants: MITSUBISHI CHEMICAL CORPORATION, SHINRYO CORPORATION
    Inventors: Shoichi TAKASHIMA, Fumihiro MUTO, Takayuki SUZUKI, Hiroyuki ARITA
  • Patent number: 11767284
    Abstract: An object of the present invention is to provide a method for producing an unsaturated carboxylic ester, wherein the risk of polymerization blockage is reduced and the required equipment cost and workload involved are kept low while maintaining a high conversion rate in an esterification reaction of unsaturated carboxylic acid. This object can be achieved by a method for producing an unsaturated carboxylic ester, which includes performing an esterification reaction using a reactor packed with a solid catalyst, wherein unsaturated carboxylic acid and alcohol are continuously fed to the reactor from an inlet thereof to form a fluid of the reaction solution in the reactor, and the vaporized organic solvent is continuously fed to the reactor from the inlet or a part near the inlet of the reactor.
    Type: Grant
    Filed: September 28, 2020
    Date of Patent: September 26, 2023
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Yasushi Ogawa, Risa Katayama
  • Patent number: 11769871
    Abstract: A lithium secondary battery comprising: a positive electrode and a negative electrode which each has a specific composition and specific properties; and a nonaqueous electrolyte which contains a cyclic siloxane compound represented by general formula (1), fluorosilane compound represented by general formula (2), compound represented by general formula (3), compound having an S—F bond in the molecule, nitric acid salt, nitrous acid salt, monofluorophosphoric acid salt, difluorophosphoric acid salt, acetic acid salt, or propionic acid salt in an amount of 10 ppm or more of the whole nonaqueous electrolyte. This lithium secondary battery has a high capacity, long life, and high output. [In general formula (1), R1 and R2 are an organic group having 1-12 carbon atoms and n is an integer of 3-10. In general formula (2), R3 to R5 are an organic group having 1-12 carbon atoms; x is an integer of 1-3; and p, q, and r each are an integer of 0-3, provided that 1?p+q+r?3.
    Type: Grant
    Filed: September 11, 2020
    Date of Patent: September 26, 2023
    Assignees: Mitsubishi Chemical Corporation, MU IONIC SOLUTIONS CORPORATION
    Inventors: Ryoichi Kato, Minoru Kotato
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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