Patents Assigned to Asahi Kasei Kabushiki Kaisha
  • Patent number: 11192979
    Abstract: The present invention provides a polyamide composition containing 50 to 99 parts by mass of an aliphatic polyamide (1A) formed from a diamine and a dicarboxylic acid, and 1 to 50 parts by mass of a semi-aromatic polyamide (1B) containing a dicarboxylic acid unit that includes at least 75 mol % of isophthalic acid and a diamine unit that includes at least 50 mol % of a diamine of 4 to 10 carbon atoms, wherein the tan ? peak temperature of the polyamide composition is at least 90° C., and the weight average molecular weight Mw of the polyamide composition satisfies 15,000?Mw?35,000. The invention also provides a molded article or the like formed using the polyamide composition.
    Type: Grant
    Filed: March 30, 2018
    Date of Patent: December 7, 2021
    Assignee: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Shinji Ieda, Koichi Nagase, Hisho Yamada, Jun Mikami, Takayuki Wakita, Yoshifumi Araki, Kimiaki Kawatani, Tomoyo Okumura, Yoshikimi Kondo, Kazunori Terada
  • Publication number: 20210375614
    Abstract: Provided is a nitride semiconductor element capable of stably withstand being driven at high current density without becoming insulated. The nitride semiconductor element includes an active layer and an AlGaN layer formed above the active layer and formed of AlGaN, the AlGaN containing Mg and having an Al composition ratio decreasing in a direction away from the active layer, and the Al composition ratio being larger than 0.2, in which the AlGaN layer includes a first AlGaN region in which a compositional gradient a1 of the Al composition ratio is larger than 0 Al %/nm and smaller than 0.22 Al %/nm, and a concentration b1 of the Mg in the AlGaN layer is larger than 0 cm?3 and smaller than 7.0×1019×a1-2.0×1018 cm?3.
    Type: Application
    Filed: March 18, 2021
    Publication date: December 2, 2021
    Applicant: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Kosuke SATO, Motoaki IWAYA
  • Publication number: 20210371710
    Abstract: A block copolymer comprising a polymer block (A) mainly comprising a vinyl aromatic monomer unit, and a polymer block (B) mainly comprising a conjugated diene monomer unit, the block copolymer being represented by the following general formula (1) or (2): wherein each curved portion represents a saturated or unsaturated hydrocarbon group having 1 to 20 carbon atoms which is unsubstituted or optionally has a substituent, X represents a group 1 element, and “polymer” represents a polymer moiety.
    Type: Application
    Filed: January 28, 2019
    Publication date: December 2, 2021
    Applicant: Asahi Kasei Kabushiki Kaisha
    Inventors: Naoki Taniguchi, Ippei Kameda, Masato Yamada, Hitoshi Yamamoto
  • Publication number: 20210371995
    Abstract: A laminate having: an electrode for electrolysis, and a membrane laminated on the electrode for electrolysis, wherein when the laminate is wetted with a 3 mol/L NaCl aqueous solution, and under a storage condition at ordinary temperature, an amount of a transition metal component (with the proviso that zirconium is excluded), detected from the membrane after storage for 96 hours, is 100 cps or less; and A protective laminate having: a first electrode for electrolysis, a second electrode for electrolysis, a membrane disposed between the first electrode for electrolysis and the second electrode for electrolysis, and an insulation sheet that protects at least one of the surface of the first electrode for electrolysis and the surface of the second electrode for electrolysis.
    Type: Application
    Filed: September 12, 2019
    Publication date: December 2, 2021
    Applicant: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Akiyasu FUNAKAWA, Yoshifumi KADO, Takuya MORIKAWA
  • Patent number: 11186715
    Abstract: Provided are a polyphenylene ether resin composition having excellent fluidity and heat resistance, and a vehicle lighting fixture bezel formed of this resin composition and having light weight, excellent external appearance, and low water absorbency. The resin composition contains: (A) 42-57 mass % of a polyphenylene ether resin having a reduced viscosity of 0.39-0.43 dL/g (in chloroform solvent at 30° C.); (B) 11-26 mass % of a polyphenylene ether resin having a reduced viscosity of 0.31-0.34 dL/g (in chloroform solvent at 30° C.); (C) 9-15 mass % of a block copolymer including a vinyl aromatic hydrocarbon polymer block (c1) and a hydrogenated conjugated diene polymer block (c2); and (D) 15-23 mass % of a homopolymer of a vinyl aromatic hydrocarbon. The (C) block copolymer includes 62-70 mass % of vinyl aromatic hydrocarbon-derived monomer units, has a weight-average molecular weight Mw of 50,000-70,000, and has a molecular weight distribution Mw/Mn (Mn is number-average molecular weight) of 1.00-1.30.
    Type: Grant
    Filed: September 3, 2020
    Date of Patent: November 30, 2021
    Assignees: ASAHI KASEI KABUSHIKI KAISHA, KOITO MANUFACTURING CO., LTD.
    Inventors: Yasuaki Konomi, Masahiko Niino, Hidetaka Anma, Kazuhito Osada, Takashi Furui
  • Publication number: 20210366703
    Abstract: Provided is a nitride semiconductor element that does not cause element breakdown even when driven at high current density. A nitride semiconductor element includes an active layer, an electron block layer formed above the active layer, an AlGaN layer formed on the electron block layer, and a cover layer covering an upper surface of the AlGaN layer and formed of AlGaN or GaN having a lower Al composition ratio than in the AlGaN layer, in which the AlGaN layer includes protrusions provided on a surface opposite to the active layer, and the cover layer covers the protrusions. The AlGaN layer is preferably formed of AlGaN having an Al composition ratio decreasing in a direction away from the active layer, and the protrusions preferably have a frustum shape.
    Type: Application
    Filed: March 18, 2021
    Publication date: November 25, 2021
    Applicant: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Kosuke SATO, Motoaki IWAYA
  • Patent number: 11180593
    Abstract: The present invention provides a methacrylic resin composition for non-contact hot plate welding comprising a methacrylic resin comprising 80 to 99.9% by mass of a methacrylic acid ester monomer unit and 0.1 to 20% by mass of a unit of at least one additional vinyl monomer copolymerizable with the methacrylic acid ester monomer, wherein the methacrylic resin composition has a melt flow rate (MFR) of 2.5 g/10 min or lower at 230° C. at a load of 3.8 kg.
    Type: Grant
    Filed: April 17, 2019
    Date of Patent: November 23, 2021
    Assignee: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Masahiro Watanabe, Katsura Tsujimoto, Kazunori Kozawa
  • Publication number: 20210355266
    Abstract: The present invention provides a coating film having a structure represented by the following general formula (1) (in the formula, R11 is a residue formed by removing one isocyanate group from a polyisocyanate, and R12 is an alkyl group or an alkoxy group having 2 to 12 carbon atoms, R13 is a residue formed by removing one hydroxyl group from a polyol), wherein a König hardness of the coating film is 20 or more, in an SS curve measurement of a tensile test, the coating film has an elastic deformation region and a plastic deformation region, and in the SS curve measurement, a stress at an inflection point stress between the elastic deformation region and the plastic deformation region is 5 MPa or more.
    Type: Application
    Filed: October 31, 2019
    Publication date: November 18, 2021
    Applicant: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Eiko TANAKA, Koichiro AZUMA
  • Patent number: 11175158
    Abstract: To reduce false counts of a device that counts a user's step count. A pedometer device, a step counting method, and a recording medium are provided. The pedometer devices includes: an acquiring unit that acquires a sensor signal output by a sensor carried by a user; an extracting unit that extracts a feature quantity from the sensor signal; a storage unit that stores a walking model which represents walking motions, the walking model being formed based on a feature quantity extracted from a sensor signal corresponding to a predetermined number of steps of walking; a comparing unit that compares the feature quantity extracted at the extracting unit with the walking model; and a deciding unit that decides whether the user has walked a predetermined number of steps, based on a result of the comparison performed by the comparing unit.
    Type: Grant
    Filed: March 7, 2019
    Date of Patent: November 16, 2021
    Assignee: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Keisuke Shigeta, Shiro Kobayashi
  • Patent number: 11174337
    Abstract: The present invention provides an isocyanate composition including an isocyanate compound having an ethylenically unsaturated bond, a compound represented by formula (1) (in the formula, R1 represents an a-valent organic group, R2 represents a monovalent organic group, a represents an integer of 1 or 2), and/or a compound having a UV absorption in a spectral region of a decamer or higher isocyanate measured by gel permeation chromatography; and an isocyanate composition including an isocyanate compound having an ethylenically unsaturated bond, or a compound having at least one unsaturated bond other than an unsaturated bond constituting an aromatic ring or an inert compound such as a hydrocarbon compound or the like and having a carbon-carbon unsaturated bond other than an unsaturated bond constituting an aromatic ring; or the like R1—(COO—R2)a??(1).
    Type: Grant
    Filed: October 13, 2017
    Date of Patent: November 16, 2021
    Assignee: Asahi Kasei Kabushiki Kaisha
    Inventors: Nobuhisa Miyake, Masaaki Shinohata, Atsushi Ohkubo, Koichi Nakaoka, Yuji Kosugi
  • Publication number: 20210351437
    Abstract: Provided is a nonaqueous secondary battery including: a positive electrode that contains at least one positive electrode active material capable of occluding and releasing lithium ions; a negative electrode that contains a negative electrode active material which is at least one selected from the group consisting of lithium metals and materials capable of occluding and releasing lithium ions; and a nonaqueous electrolytic solution, wherein the negative electrode contains at least one compound selected from the group consisting of compounds represented by general formulas (1)-(3).
    Type: Application
    Filed: September 13, 2019
    Publication date: November 11, 2021
    Applicant: Asahi Kasei Kabushiki Kaisha
    Inventors: Hirokazu Kamine, Naoki Matsuoka
  • Patent number: 11171386
    Abstract: The purpose of the present invention is to provide a nonaqueous electrolyte battery having excellent lifespan characteristics and/or excellent safety, which are essential in practice. The basic inorganic particles for a nonaqueous electrolyte battery according to the present invention include basic inorganic particles, wherein a hydrophilicity parameter A for the basic inorganic particles satisfies the expression: 0.45?A(BET1/BET2)?2.0. In the expression, BET1 represents the specific surface area of the basic inorganic particles calculated from an adsorption isotherm which is measured through adsorption of water vapor to the basic inorganic particles by a BET method. BET2 represents the specific surface area of the basic inorganic particles calculated from an adsorption isotherm which is measured through adsorption of nitrogen to the basic inorganic particles by a BET method.
    Type: Grant
    Filed: December 1, 2017
    Date of Patent: November 9, 2021
    Assignee: Asahi Kasei Kabushiki Kaisha
    Inventors: Hiroyuki Saeki, Nobuhiro Ito, Kunio Matsui
  • Patent number: 11171339
    Abstract: Provided is a carbon foam and a membrane electrode assembly having linear portions and node portions joining the linear portions; and a carbon foam and a membrane electrode assembly having linear portions and node portions joining the linear portions, where the carbon content is 51 mass % or more, and the mean deviation of coefficient of friction by the Kawabata evaluation system method is 0.006 or less.
    Type: Grant
    Filed: November 1, 2017
    Date of Patent: November 9, 2021
    Assignee: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Junya Yamashita, Satomi Fukunaga, Atsushi Suzuki, Shozo Takada
  • Publication number: 20210344045
    Abstract: A nonaqueous electrolyte solution is provided comprising a nonaqueous solvent containing acetonitrile at 5 vol % to 95 vol %; a lithium salt; and one or more compounds having a structure satisfying the following conditions 1 to 5: 1. being a condensation polycyclic heterocyclic ring compound, 2. containing a pyrimidine backbone in the condensation polycyclic heterocyclic ring, 3. containing 3 or more nitrogen atoms in the condensation polycyclic heterocyclic ring, 4. containing 5 or more sp2 carbons in the condensation polycyclic heterocyclic ring, and 5. having no hydrogen atoms bonded to the nitrogen atoms in the condensation polycyclic heterocyclic ring.
    Type: Application
    Filed: June 26, 2020
    Publication date: November 4, 2021
    Applicant: Asahi Kasei Kabushiki Kaisha
    Inventors: Kosuke Shoji, Naoki Matsuoka
  • Publication number: 20210339194
    Abstract: A feedstock solution flow concentration system, which has a first step for counterflowing or parallel flowing a feedstock solution flow a containing a solute and a solvent b, and a draw solution flow d via a forward osmosis membrane o and transferring the solvent b in the feedstock solution flow a to the draw solution flow d to obtain a concentrated feedstock solution flow c, which is the feedstock solution flow which has been concentrated, and a diluted draw solution flow e, which is the draw solution flow which has been diluted.
    Type: Application
    Filed: September 3, 2019
    Publication date: November 4, 2021
    Applicant: Asahi Kasei Kabushiki Kaisha
    Inventors: Daisuke Hotta, Mitsuru Fujita, Masato Mikawa
  • Publication number: 20210344046
    Abstract: Provided is a nonaqueous electrolytic solution containing a nonaqueous solvent, a lithium salt, and at least one compound selected from the group consisting of compounds represented by general formula (1): R1—(S)n—R2, general formula (2): X—Si(OR3)(3-m)R4m, general formula (3), general formula (4), and general formula (18): X—Si(OR3?OR3)(3-m)R4m.
    Type: Application
    Filed: September 13, 2019
    Publication date: November 4, 2021
    Applicant: Asahi Kasei Kabushiki Kaisha
    Inventors: Naoki Matsuoka, Hirokazu Kamine
  • Publication number: 20210339239
    Abstract: The present invention relates to a method for producing an oxide catalyst containing Mo, V, Sb, and Nb, the method including a raw material preparation step of obtaining an aqueous mixed liquid containing Mo, V, Sb, and Nb, an aging step of subjecting the aqueous mixed liquid to aging at more than 30° C., a drying step of drying the aqueous mixed liquid, thereby obtaining a dried powder, and a calcination step of calcining the dried powder, thereby obtaining the oxide catalyst, and a method for producing an unsaturated nitrile or an unsaturated acid by using the catalyst.
    Type: Application
    Filed: July 12, 2021
    Publication date: November 4, 2021
    Applicant: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Eri TATENO, Minoru KADOWAKI
  • Patent number: 11161806
    Abstract: A process for producing a compound by use of a fluidized bed reactor comprising an internal space having a catalyst housed in a fluidizable manner therein, a first feed port into which a starting material gas comprising a hydrocarbon is fed to the fluidized bed reactor, a second feed port into which an oxygen-containing gas comprising oxygen is fed to the fluidized bed reactor, and a discharge port into which a reaction product gas is discharged from the fluidized bed reactor, including a reaction step of subjecting the hydrocarbon to a vapor phase catalytic oxidation reaction or a vapor phase catalytic ammoxidation reaction in the presence of the catalyst in the internal space to produce the corresponding unsaturated acid or unsaturated nitrile, respectively, wherein in the reaction step, a linear velocity (m/sec) of the starting material gas at the first feed port is adjusted against a degree of abrasion resistance (%) of the catalyst so as to satisfy a prescribed relation between them.
    Type: Grant
    Filed: June 19, 2018
    Date of Patent: November 2, 2021
    Assignee: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Dai Nagata, Sho Tamura
  • Patent number: 11163234
    Abstract: A negative-type photosensitive resin composition that has a satisfactory imidization rate and can yield a resin layer with high chemical resistance, even under low-temperature curing conditions of 200° C. or below, the negative-type photosensitive resin composition containing a photopolymerization initiator (B) in a proportion of 0.1 part by mass to 20 parts by mass with respect to 100 parts by mass of a polyimide precursor (A), the polyimide precursor (A) being a polyamic acid ester or polyamic acid salt with a specific structure, and the weight-average molecular weight (Mw) of the polyimide precursor (A) being 3,000 or greater and less than 16,000, in terms of polystyrene, according to gel permeation chromatography (GPC).
    Type: Grant
    Filed: August 17, 2017
    Date of Patent: November 2, 2021
    Assignee: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Tomohiro Yorisue, Mitsutaka Nakamura, Taihei Inoue, Tatsuya Hirata, Takahiro Sasaki
  • Patent number: D937081
    Type: Grant
    Filed: April 25, 2019
    Date of Patent: November 30, 2021
    Assignee: ASAHI KASEI KABUSHIKI KAISHA
    Inventor: Michiyo Yamane