Patents Assigned to Asahi Kasei Kabushiki Kaisha
  • Patent number: 11905233
    Abstract: A process for producing unsaturated nitrile comprising a reaction step of subjecting hydrocarbon to a vapor phase catalytic ammoxidation reaction in a fluidized bed reactor to produce the corresponding unsaturated nitrile, wherein, in the reaction step, a powder is fed to a dense zone in the fluidized bed reactor using a carrier gas, and a ratio of a linear velocity LV1 of the carrier gas at a feed opening to feed the powder to the fluidized bed reactor to a linear velocity LV2 of a gas in the dense zone (LV1/LV2) is not less than 0.01 and not more than 1200.
    Type: Grant
    Filed: May 15, 2018
    Date of Patent: February 20, 2024
    Assignee: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Eri Tateno, Sho Tamura
  • Patent number: 11905395
    Abstract: An object of the present invention is to obtain a molded bale of a rubber composition that is difficult to cold flow and difficult to be thermally deteriorated. The present invention provides a molded bale of a rubber composition containing: a rubber-like polymer (A) having an iodine value of 10 to 250, 3% by mass or more of an ethylene structure, and less than 10% by mass of a vinyl aromatic monomer block; and aluminum (B), in which a content of the aluminum (B) is 2 ppm or more and 200 ppm or less.
    Type: Grant
    Filed: June 24, 2021
    Date of Patent: February 20, 2024
    Assignee: Asahi Kasei Kabushiki Kaisha
    Inventors: Yoshifumi Araki, Atsushi Yasumoto, Akitomo Kikuchi, Tomohiro Kondo
  • Publication number: 20240055722
    Abstract: A polyolefin porous film is provided which has a film thickness of 1-30 ?m and an air permeability of at most 500 sec/100 cm3, and which has a 30% or higher porosity after compression, measured in a compression test under the conditions in which the temperature is 70° C., the pressure is 8 MPa and the compression time is 3 minutes.
    Type: Application
    Filed: October 29, 2021
    Publication date: February 15, 2024
    Applicant: Asahi Kasei Kabushiki Kaisha
    Inventors: Wataru Mizutani, Tomosato Okubo, Masaaki Okada, Takeshi Matsubayashi
  • Publication number: 20240055723
    Abstract: The present invention provides: a separator for lead acid storage batteries, the separator exhibiting excellent charge acceptance performance and excellent liquid loss characteristics when in use under PSoC, while being not susceptible to the occurrence of ply separation within a lead acid storage battery and having good ER; and a lead acid storage battery which uses this separator for lead acid storage batteries. The present invention provides a separator for lead acid storage batteries, the separator comprising a base material and a conductive layer that is superposed on at least one surface of the base material.
    Type: Application
    Filed: March 7, 2022
    Publication date: February 15, 2024
    Applicant: Asahi Kasei Kabushiki Kaisha
    Inventors: Juri Iwama, Yasuhito Iizuka, Tomonori Kiyama
  • Publication number: 20240051911
    Abstract: The method for industrially producing a dialkyl carbonate and a diol, in which the dialkyl carbonate and the diol are continuously produced through a reactive distillation system of taking a cyclic carbonate and an aliphatic monohydric alcohol as starting materials, comprising the steps of: continuously feeding the starting materials into a continuous multi-stage distillation column in which a homogeneous catalyst is present; carrying out reaction and distillation simultaneously in the column; continuously withdrawing a low boiling point reaction mixture containing the produced dialkyl carbonate in a gaseous form from an upper portion of the column; and continuously withdrawing a high boiling point reaction mixture containing the diol in a liquid form from a lower portion of the column, where the method satisfies specific requirements.
    Type: Application
    Filed: November 18, 2021
    Publication date: February 15, 2024
    Applicant: ASAHI KASEI KABUSHIKI KAISHA
    Inventor: Hironobu YAMAUCHI
  • Publication number: 20240050897
    Abstract: Provided are a concentration method and system for concentrating a raw material solution, and in which a raw material solution containing a solute and a solvent is concentrated to obtain a concentrate of the raw material solution, wherein the solvent contains water and an organic solvent. In the method and system for concentrating a raw material solution, the system includes a combination of: a first concentrating means for removing water in the raw material solution by means of a forward osmosis method; and a second concentrating means for evaporating and removing water and an organic solvent in the raw material solution.
    Type: Application
    Filed: September 17, 2020
    Publication date: February 15, 2024
    Applicant: Asahi Kasei Kabushiki Kaisha
    Inventors: Tomotaka Hashimoto, Yuki Suga, Masato Mikawa, Ryoichi Takada
  • Publication number: 20240043619
    Abstract: Problem: The invention provides a polyimide precursor as well as a resin composition thereof that is excellent in coating properties of slit coating as well as productivity and also excellent in optical properties that are required for applications of flexible substrates. Solution: The polyimide precursor comprises a structure unit derived from a fluorene backbone and a silicon-containing structure unit, and a weight-average molecular weight of the polyimide precursor is 90,000 to 250,000.
    Type: Application
    Filed: October 5, 2023
    Publication date: February 8, 2024
    Applicant: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Takayuki KANADA, Masaki MAITANI, Toshiaki OKUDA
  • Publication number: 20240042748
    Abstract: A jig for laminate production for producing a laminate of an electrode for electrolysis and a membrane. The jig includes a roll for an electrode around which an elongate electrode for electrolysis is wound, and a roll for a membrane around which an elongate membrane is wound.
    Type: Application
    Filed: October 5, 2023
    Publication date: February 8, 2024
    Applicant: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Yoshifumi WADA, Hiroshi TACHIHARA, Mamoru MATSUOKA, Akiyasu FUNAKAWA, Yoshifumi KADO
  • Publication number: 20240035211
    Abstract: Provided is a surface covering material such as a sheet for a seat in a vehicle or as furniture, or upholstery for a vehicle, said surface covering material having good cooling and anti-stuffiness properties, while being able to inhibit the creation of fluff even if the surface is rubbed by hard protrusions such as the hook part of a hook-and-loop fastener. The surface covering material of the present invention is configured from a three-dimensional knit that includes a front knit fabric, a back knit fabric, and a connecting layer composed of connecting yarn that connects the front knit fabric and the back knit fabric, said surface covering material being characterized in that the outside surface of the front knit fabric is set to be a surface that comes into contact with a human body, and the stitch density of the front knit fabric is 11,500-20,000, inclusive.
    Type: Application
    Filed: March 22, 2022
    Publication date: February 1, 2024
    Applicant: Asahi Kasei Kabushiki Kaisha
    Inventor: Hideo Ikenaga
  • Publication number: 20240034040
    Abstract: A laminate includes an electrode for electrolysis and a membrane laminated on the electrode for electrolysis. The membrane has an asperity geometry on the surface thereof and a ratio a of a gap volume between the electrode for electrolysis and the membrane with respect to a unit area of the membrane is more than 0.8 ?m and 200 ?m or less.
    Type: Application
    Filed: October 6, 2023
    Publication date: February 1, 2024
    Applicant: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Akiyasu FUNAKAWA, Takuya MORIKAWA, Yoshifumi KADO, Aguru YAMAMOTO
  • Patent number: 11884760
    Abstract: A production method for a branched conjugated diene-based polymer, comprising: a polymerizing step of obtaining a conjugated diene-based polymer having an active end by polymerizing or copolymerizing a conjugated diene compound, or a conjugated diene compound and an aromatic vinyl compound with an alkali metal compound or an alkaline earth metal compound used as a polymerization initiator; and a branching step of introducing a branch structure by reacting a styrene derivative as a branching agent with the active end of the conjugated diene-based polymer.
    Type: Grant
    Filed: December 9, 2020
    Date of Patent: January 30, 2024
    Assignee: Asahi Kasei Kabushiki Kaisha
    Inventors: Shinichi Sekikawa, Kenta Hisamura, Syogo Sumitani, Yoshifumi Araki
  • Patent number: 11884818
    Abstract: Polyamide pre-expanded particles of this disclosure have a peak temperature of a maximum endothermic peak of 150-275° C. on a DSC curve obtained while being heated from 30° C. to 280° C. at a heating rate of 10° C./min using a DSC. The width of the peak is 30-80° C. when a straight line approximating the DSC curve on a high-temperature side relative to the peak after an end of melting is used as a baseline. The width corresponds to a difference between an extrapolated melting start temperature which is a temperature at an intersection point between a tangent line at an inflection point of the peak on a low-temperature side and the baseline, and an extrapolated melting end temperature which is a temperature at an intersection point between a tangent line at an inflection point of the peak on a high-temperature side and the baseline.
    Type: Grant
    Filed: July 31, 2019
    Date of Patent: January 30, 2024
    Assignee: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Yoshinori Fujino, Ryota Nakayama, Yasuyuki Kawazu
  • Publication number: 20240026089
    Abstract: A polyethylene powder having a viscosity average molecular weight of 100,000 or more and 2,500,000 or less, wherein, in a torque curve obtained when kneading the polyethylene powder under the following <Kneading Conditions> using a Labo Plastomill, a slope of a straight line connecting two local maximum points is 2 N·m/min or more and 15 N·m/min or less: <Kneading Conditions> After 24 g of liquid paraffin is kneaded for 10 minutes using a Labo Plastomill Mixer, produced by Toyo Seiki Seisaku-sho, Ltd. (unit model: 30C150, mixer model: R-60) at a set temperature of 114° C. and a rotation speed of 5 rpm, 16 g of the polyethylene powder and 0.4 g of an antioxidant are added thereto, followed by kneading at a rotation speed of 30 rpm for 3 minutes, and then the set temperature is raised from 114° C. to 163° C. over 1 minute; and after the temperature rise, the mixture is kneaded at a set temperature of 163° C. and a rotation speed of 30 rpm for 5 minutes.
    Type: Application
    Filed: November 12, 2021
    Publication date: January 25, 2024
    Applicant: Asahi Kasei Kabushiki Kaisha
    Inventor: Naoya Okitsu
  • Publication number: 20240026057
    Abstract: Provided is a crosslinking rubber composition containing: a rubber-like polymer (A) having an iodine value of 10 to 250 (g/100 g), comprising 3% by mass or more of an ethylene structure and less than 10% by mass of a vinyl aromatic monomer block, containing a nitrogen atom, and having a modification ratio measured by column adsorption GPC of 40% by mass or more; and a crosslinking agent (B).
    Type: Application
    Filed: December 22, 2021
    Publication date: January 25, 2024
    Applicant: Asahi Kasei Kabushiki Kaisha
    Inventors: Daisuke Hayata, Yoshifumi Araki, Shinichi Motofusa
  • Publication number: 20240030553
    Abstract: The present invention provides a method for producing a separator for lead acid storage batteries, said method comprising a surface layer formation step which includes: a coating liquid preparation step wherein a coating liquid that contains a solvent, a conductive material and a high-molecular-weight compound is prepared; a coating step wherein the coating liquid obtained in the coating liquid preparation step is applied to at least one surface of a separator base material; and a solvent removal step wherein the solvent is removed from the coating liquid that has been applied to the separator base material in the coating step. With respect to this method for producing a separator for lead acid storage batteries, the high-molecular-weight compound is contained in an amount of from 0.1% by mass to 25% by mass relative to the solid content of the coating liquid.
    Type: Application
    Filed: September 24, 2021
    Publication date: January 25, 2024
    Applicant: Asahi Kasei Kabushiki Kaisha
    Inventors: Masuro Funaki, Yasuhito Iizuka, Makoto Uozumi
  • Publication number: 20240029079
    Abstract: An information processing method performed by an information processing apparatus, the method including: an item information acquisition step of acquiring item identification information that enables identification of a check target item, from a serial code attached to the check target item or image information on the check target item; an optical image acquisition step of acquiring optical image information about an optical image that is obtained from a fine line pattern attached to the check target item; and a checking step of checking ground truth information about a ground truth label of the optical image corresponding to the item identification information against the optical image information that is acquired, and generating a check result.
    Type: Application
    Filed: September 9, 2021
    Publication date: January 25, 2024
    Applicant: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Tsuneharu TANAKA, Masayuki ABE, Ryohei KINOSHITA
  • Patent number: 11878273
    Abstract: A method for washing a filter is used in a seawater desalination process including a first filtration step for subjecting seawater to microfiltration or ultrafiltration, and a second filtration step for subjecting seawater after the first filtration step to a reverse osmosis treatment. The filter is a microfiltration membrane or ultrafiltration membrane used in the first filtration step. An iron compound is added to seawater in any stage in the washing method. The washing method includes a washing chemical liquid preparation step for preparing washing chemical liquid, and a sticking matter removal step for removing matter sticking to the filter by bringing the filter into contact with washing chemical liquid. In the washing chemical liquid preparation step, seawater after the first filtration step is mixed with at least hydrogen peroxide to prepare washing chemical liquid having an iron compound concentration of 1.50 mmol/L or more in terms of iron atoms.
    Type: Grant
    Filed: May 7, 2019
    Date of Patent: January 23, 2024
    Assignee: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Yutaka Gojo, Takahide Yoshida
  • Publication number: 20240017889
    Abstract: The purpose of the invention is to provide a heat insulating container capable of suppressing the deterioration of heat insulation performance even if the volume of an object stored is reduced. A heat insulating container 1 includes a storage space 13 formed by a bottom wall 11 and side walls 12, a container body 10 having an opening 14 continuous to the storage space 13, and a deformable plate-shaped lid 20. The lid 20 is configured such that at least a part thereof is deformed in a state of being inserted into the storage space 13 through the opening 14 of the container body 10 thereby to bring peripheral edges 21 thereof into close contact with the inner surfaces of the side walls 12 of the container body 10.
    Type: Application
    Filed: November 9, 2021
    Publication date: January 18, 2024
    Applicant: Asahi Kasei Kabushiki Kaisha
    Inventor: Kenji Kamiyama
  • Patent number: 11877391
    Abstract: An object of the present invention is to provide a conductive film that is excellent in flexibility while maintaining its sufficient transparency and conductivity, and a conductive film roll, an electronic paper, a touch panel, and a flat-panel display having the same. A conductive film having a transparent substrate and a conductive part having a fine metal wire pattern disposed on one side or both sides of the transparent substrate, wherein the fine metal wire pattern is constituted by a fine metal wire, and the conductive film satisfies the following condition (i) or (ii): (i) the fine metal wire has voids, and when the cross-sectional area of the fine metal wire is defined as SM and the total cross-sectional area of the voids included in the cross-section of the fine metal wire is defined as SVtotal on the cross-section of the fine metal wire perpendicular to the direction of drawing of the fine metal wire, SVtotal/SM is 0.10 or more and 0.
    Type: Grant
    Filed: July 30, 2019
    Date of Patent: January 16, 2024
    Assignee: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Takeshi Kamijo, Sora Hida, Tetsuro Sugimoto, Yu Tomono
  • Patent number: 11876267
    Abstract: The present invention provides an electrolyte membrane for a redox flow battery, comprising a perfluorocarbon polymer having an ion-exchange group, wherein the perfluorocarbon polymer has equivalent weight EW of the ion-exchange group of 600 g/eq or more and 2000 g/eq or less, a craze area ratio of the electrolyte membrane is 1.5% or less, and a relative dimension of the electrolyte membrane in at least one of a X direction and a Y direction is 80% or more and less than 100% in the following relative dimension by dipping in 2 M aqueous sulfuric acid solution.
    Type: Grant
    Filed: March 6, 2020
    Date of Patent: January 16, 2024
    Assignee: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Yuka Kanada, Junya Yamashita, Hiroko Kamochi, Kazuya Kai