Patents Assigned to Mitsubishi Chemicals Corporation
  • Patent number: 11884813
    Abstract: There is provided an epoxy resin composition comprising a (meth)acrylic copolymer (A), an epoxy resin (B), and a curing agent (C), wherein the (meth)acrylic copolymer (A) has a constituent unit derived from a macromonomer (a) and a constituent unit derived from a vinyl monomer (b), and wherein a glass transition temperature (TgB) of a polymer obtained by polymerizing only the vinyl monomer (b) is 25° C. or less.
    Type: Grant
    Filed: March 2, 2020
    Date of Patent: January 30, 2024
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Eri Masuda, Junichi Nakamura, Kazuyoshi Odaka, Sora Tomita, Go Otani
  • Patent number: 11884856
    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 when, in a powder X-ray diffraction spectrum of the phosphor, the intensity of a peak that appears in a region where 2?=38-39° is designated as Ix and the intensity of a peak that appears in a region where 2?=37-38° is designated as Iy, the relative intensity Ix/Iy of Ix to Iy is 0.140 or less, and a light-emitting device comprising the phosphor.
    Type: Grant
    Filed: March 30, 2023
    Date of Patent: January 30, 2024
    Assignees: Mitsubishi Chemical Corporation, NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Tomoyuki Kurushima, Yuhei Inata, Naoto Hirosaki
  • Patent number: 11884806
    Abstract: A resin composition contains an ethylene-vinyl alcohol copolymer, wherein the ratio (Y/Z) of a lactone ring content (Y) to the sum (Z) of a carboxylic acid content (X) and the lactone ring content (Y) in terminal structures of the ethylene-vinyl alcohol copolymer is not less than 55 mol %, and at least one of a cinnamic acid component, a lubricant, a boron compound, and a conjugated polyene compound is present as a thermally stabilizing substance in a predetermined proportion based on the weight of the resin composition. Therefore, the resin composition is excellent in high-temperature thermal decomposition suppressing effect and thermal stability, and is free from odor emanation and coloration even if being processed at a higher temperature.
    Type: Grant
    Filed: June 5, 2019
    Date of Patent: January 30, 2024
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Kota Inoue, Honoka Hashimoto, Nobuaki Sato
  • Patent number: 11884857
    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 when, in a powder X-ray diffraction spectrum of the phosphor, the intensity of a peak that appears in a region where 2?=38-39° is designated as Ix and the intensity of a peak that appears in a region where 2?=37-38° is designated as Iy, the relative intensity Ix/Iy of Ix to Iy is 0.140 or less, and a light-emitting device comprising the phosphor.
    Type: Grant
    Filed: March 30, 2023
    Date of Patent: January 30, 2024
    Assignees: Mitsubishi Chemical Corporation, National Institute for Materials Science
    Inventors: Tomoyuki Kurushima, Yuhei Inata, Naoto Hirosaki
  • Publication number: 20240027928
    Abstract: An electrophotographic photoreceptor includes: a conductive support; a photosensitive layer on the conductive support; and a protective layer, for example, an outermost layer on a side opposite to the conductive support, wherein the protective layer contains a polymer having a structure represented by the following formula (a): A1-L1-X-L2-A2??(a).
    Type: Application
    Filed: September 27, 2023
    Publication date: January 25, 2024
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Akira Ando, Chiyoko Sato
  • Publication number: 20240029699
    Abstract: To provide a sound-insulating sheet member capable of being installed in a location with a limited installation space and allowing for insulation of low-frequency sound, and a sound-insulating structure body including the sound-insulating sheet member. A sound-insulating sheet member including a sheet portion having rubber elasticity, and a plurality of protrusion portions that is provided on at least one face of the sheet portion and that has rubber elasticity, in which at least one of the protrusion portions and a region of the sheet portion, where the protrusion portions are provided, contains a space portion.
    Type: Application
    Filed: September 27, 2023
    Publication date: January 25, 2024
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Kazuma Inoue, Takahiro Komamura, Yuya Saito, Takeshi Matsuoka
  • Publication number: 20240026073
    Abstract: To provide a resin composition and a molded article. The resin composition contains a thermoplastic resin and an electrically conductive substance, wherein the resin composition formed into a molded article with a size of 100 mm×100 mm×t mm thick, provided that t is a value in a case where Concentration C (mass %) of an electrically conductive substance in the resin composition×Thickness t (mm) gives a value of 1.2 or more, has a ? absorptance of 20.0% or less, which is a difference between a maximum value and a minimum value of the absorptance in the frequency range of 28.0 GHz to 40.0 GHz; and has the absorptance of 35.0% or more at a frequency of 28.
    Type: Application
    Filed: September 28, 2023
    Publication date: January 25, 2024
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Shuta ISEKI, Hidekazu SHOJI
  • Publication number: 20240026123
    Abstract: The present invention provides a resin additive capable of imparting low temperature impact properties to a resin material, a resin composition comprising the resin additive, and a molded article formed from the resin composition. The resin additive of the present invention is a polymer having a structural unit (a1) derived from the following monomer (1); the resin composition of the present invention comprises the resin additive and a resin material; and the molded article of the present invention is formed from the resin composition.
    Type: Application
    Filed: August 8, 2023
    Publication date: January 25, 2024
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Yutaka AOKI, Hiroshi NIINO, Eiko OKAMOTO, Hiroyuki NISHII, Masahiro UEDA, Masashi IIMORI, Atsushi KUWAHARA
  • Publication number: 20240025803
    Abstract: Provided is a fluorine-containing synthetic silica glass powder which contains a sufficient amount of fluorine, and in which a reduction in the fluorine concentration caused by dissociation of fluorine from silica can be inhibited. Problems are solved by a fluorine-containing silica glass powder which contains particles having a particle size of more than 150 ?m but 300 ?m or less in an amount of 25% by weight or more as a whole. Also provided as a method of producing the glass powder is, for example, a method of producing a fluorine-containing silica glass powder, which method includes: prefiring a silicon oxide at a temperature of lower than 1,000° C. in the presence of SiF4 to prepare a fluorine-containing silica; and subsequently firing the fluorine-containing silica at a temperature of 1,000° C. or higher but lower than 1,400° C. to produce a silica glass powder.
    Type: Application
    Filed: September 29, 2023
    Publication date: January 25, 2024
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Isao SHIMO, Hiromu WATANABE
  • Publication number: 20240026605
    Abstract: A pretreatment agent for inkjet textile printing and an inkjet textile printing method that can realize improvement in productivity, cost reduction, energy saving, and space saving while ensuring ink permeation and resistance to color bleeding are provided. The pretreatment agent for inkjet textile printing of the present invention contains an N-vinylformamide-based cationic polymer and an antifoaming agent.
    Type: Application
    Filed: September 27, 2023
    Publication date: January 25, 2024
    Applicant: Mitsubishi Chemical Corporation
    Inventor: Hideaki OONISHI
  • Publication number: 20240030440
    Abstract: The object of the present invention is to provide a needle coke for a graphite electrode, which suppresses puffing of the needle coke and improves the production yield and performances of graphite electrodes without incurring a large cost in the production of a needle coke, and also provide a production method and an inhibitor therefor. An inhibitor for graphite electrode production, including at least one of a metal consisting of an element (M?) and an oxide comprising the element (M?), wherein the element (M?) is at least one element selected from the group consisting of group 4 elements, group 8 elements, group 9 elements, group 10 elements, group 13 elements, group 14 elements and group 15 elements of the long-form periodic table, or including at least one of the metal consisting of an element (M?) and a compound including the element (M?), wherein the inhibitor volatilizes at a temperature of 2100 to 6000° C.
    Type: Application
    Filed: October 5, 2023
    Publication date: January 25, 2024
    Applicant: Mitsubishi Chemical Corporation
    Inventor: Satoshi Shimooka
  • Publication number: 20240018336
    Abstract: The resin composition for laser marking and for laser welding contains 100 parts by mass of a thermoplastic resin, 0.002 to 10.000 parts by mass of a bismuth compound, 0.1 to 5.0 parts by mass of organic dyes, and 0.1 to 18 parts by mass of an aromatic ring-containing compound comprising a benzene ring and/or a benzo condensed ring.
    Type: Application
    Filed: September 22, 2023
    Publication date: January 18, 2024
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventor: Takayuki SUZUKI
  • Publication number: 20240018695
    Abstract: A carbon fiber bundle may have a total fineness of 2 g/m or more and a variation rate of a thickness of the fiber bundle of 30% or less in a width direction of the fiber bundle. A manufacturing method of a carbon fiber bundle may include applying a sizing agent to the carbonized fiber bundle, drying the carbonized fiber bundle, then passing the carbonized fiber bundle such that one surface of the carbonized fiber bundle in the width direction and one opposite surface thereof are alternately brought into contact with two or more parallel rods, and winding the carbonized fiber bundle on a bobbin.
    Type: Application
    Filed: September 21, 2023
    Publication date: January 18, 2024
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Yutaro NAKAMURA, Kyu OTA
  • Publication number: 20240018137
    Abstract: Provided is a compound represented by formula (1): In the formula, A represents a polymerizable group; L represents an optionally branched (n+1)-valent linking group; R1 represents an aromatic ring group optionally having a substituent; R2 represents a monovalent organic group optionally having a substituent; X1 and X2 each independently represent an oxygen atom, a sulfur atom, or a nitrogen atom optionally having a substituent; m represents an integer of 0 or 1; n represents an integer of 1 to 3; and p represents an integer of 0 or 1. The two R1s may be bonded together at any position to form a ring structure and R1=R2, X1=X2, and p=1 do not hold simultaneously. The compound simultaneously has a high refractive index and high transparency.
    Type: Application
    Filed: September 21, 2023
    Publication date: January 18, 2024
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Shuji YAMASHITA, Akiko Yabe, Tatsuya Ishikawa, Ken Sato, Asato Tanaka
  • Publication number: 20240019592
    Abstract: A scintillator, having a composition represented by the following general formula (1), including a substitution element A, the substitution element A comprising at least La, and a total molar content of the substitution element A being 0.00001 mol or more and 0.05 mol or less in 1 mol of the scintillator, and further including an activator element B, the activator element B being constituted from Ce, having a perovskite-type crystal structure, and exhibiting a linear transmittance of light at a wavelength of 800 nm, at a thickness of 1.9 mm, of 30% or more. QMxO3y . . . (1): wherein Q represents one or more elements selected from the group consisting of Ca, Sr and Ba; M represents Hf; Q and M are each optionally substituted with other element at a proportion of 20% by mol or less; and x and y respectively satisfy 0.5?x?1.5 and 0.7?y?1.5.
    Type: Application
    Filed: September 26, 2023
    Publication date: January 18, 2024
    Applicants: Mitsubishi Chemical Corporation, TOHOKU UNIVERSITY
    Inventors: Koji Hazu, Keiji Yamahara, Shunsuke Kurosawa, Akira Yoshikawa
  • Publication number: 20240017247
    Abstract: An object of the present invention is to provide a catalyst with high yields of target products such as an ?,?-unsaturated aldehyde and an ?,?-unsaturated carboxylic acid. Problems are solved by a catalyst containing at least molybdenum and having a COD (chemical oxygen demand) of the catalyst of greater than 300 ppm and less than 11,000 ppm.
    Type: Application
    Filed: September 21, 2023
    Publication date: January 18, 2024
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Yu Kurihara, Kensuke Nishiki
  • Publication number: 20240021802
    Abstract: The present invention has been made in view of such background arts, and an object thereof is to provide a coated carbon material that can provide a secondary battery not only maintaining capacity, but also having excellent initial efficiency, as compared with a conventional art, and as a result, to provide a high-performance secondary battery. A coated carbon material where a carbon material is coated with a coating film, in which the coating film includes at least one selected from the following compound (X) and a crosslinked product of the following compounds (Y): (X): an acetoacetyl group-containing resin, and (Y): a polyvinyl alcohol-based resin and a silicon element-containing compound.
    Type: Application
    Filed: September 28, 2023
    Publication date: January 18, 2024
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Tatsuya HASEGAWA, Keiji SHITO, Hanako KATO, Kazunori MUKUNOKI, Hiroki HATAKEYAMA, Keiichi SEKI
  • Patent number: 11873370
    Abstract: A polycarbonate resin composition may include a first polycarbonate resin and a second polycarbonate resin, which a molded article may include, and a multilayer body may have a resin layer A including the polycarbonate resin composition and a resin layer B including a resin different from the resin layer A. The first polycarbonate resin may include 40% by weight or more of a structural unit of formula (1) The second polycarbonate resin may include less than 40% by weight of the structural unit of formula (1). The weight ratio of the first polycarbonate resin to the second polycarbonate resin, the first polycarbonate resin/the second polycarbonate resin, may be in a range of from 55/45 to 99/1. The polycarbonate resin composition may have two or more glass transition temperatures.
    Type: Grant
    Filed: June 10, 2019
    Date of Patent: January 16, 2024
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Shingo Namiki, Yuuichi Hirami, Tomoaki Kanemasa, Taiki Shimada, Masato Ando, Akira Kosuge, Shigeki Ohta, Yuuichirou Kutsunugi, Asami Kakiuchi
  • Publication number: 20240010776
    Abstract: A resin composition may lead to a reduction in fish eyes that cause poor external appearances of films; have a good matte external appearance, and increased thermal stability in forming. The composition may be stably produced, may be excellent in transparency; and may be applied to various uses. A film may be made of the resin composition. The resin composition may include: an acrylic rubber-containing polymer (A) at least having a Tg of lower than 0° C.; an acrylic polymer (B) having a reactive group, the acrylic polymer (B) having a Tg of 30° C. or higher; and a compound (D) having a ring structure and a group having a reactive group in a molecule thereof, wherein a total Van der Waals volume VRing (?3) corresponding to the ring structure, and a molecular weight X of the compound (D) satisfy formula (3): 0.34?VRing/X??(3).
    Type: Application
    Filed: September 21, 2023
    Publication date: January 11, 2024
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Mizuki ANABUKI, Takumi Egashira, Kazuya Shiratori
  • Publication number: 20240010819
    Abstract: The resin composition for laser marking and for laser welding contains, 100 parts by mass of a thermoplastic resin, 0.002 to 10.000 parts by mass of a bismuth compound, and 0.1 to 5.0 parts by mass in total of two or more types of non-black organic pigments.
    Type: Application
    Filed: September 22, 2023
    Publication date: January 11, 2024
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventor: Takayuki SUZUKI