Patents Assigned to Asahi Kasei Kabushiki Kaisha
  • Publication number: 20240145869
    Abstract: The present disclosure 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. The conductive layer has cracks; and the conductive layer contains a fibrous conductive material which has an average fiber diameter that is from 1% to 30% of the average crack width of the cracks.
    Type: Application
    Filed: March 7, 2022
    Publication date: May 2, 2024
    Applicant: Asahi Kasei Kabushiki Kaisha
    Inventors: Juri Iwama, Yasuhito Iizuka
  • Publication number: 20240141106
    Abstract: To provide polyphenylene ether with excellent solubility in general-purpose ketone solvents and its production method, and to provide a thermosetting composition, prepreg, and laminate using the polyphenylene ether. The polyphenylene ether includes a total of 100 mol % of a repeating unit derived from a phenol of Formula (1) and a repeating unit derived from a phenol of Formula (2), wherein from 5 mol % to 85 mol % is the repeating unit derived from the phenol of Formula (1) and from 15 mol % to 95 mol % is the repeating unit derived from the phenol of Formula (2), and a reduced viscosity (?sp/c) measured in chloroform solution at a concentration of 0.5 g/dL at 30° C. is from 0.03 dL/g to 0.30 dL/g.
    Type: Application
    Filed: December 15, 2021
    Publication date: May 2, 2024
    Applicant: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Yudai TANAKA, Shinichi FUKUEN, Jaehoon KIM
  • Patent number: 11971658
    Abstract: An ablation layer for a photosensitive resin for a relief printing plate, the ablation layer containing at least an acid-modified polymer and an infrared-absorbing agent and having a layer acid value as defined below of 2 mg KOH/g or more and 400 mg KOH/g or less, and a neutralized salt ratio as defined below of 0.9 or less, wherein the Layer acid value=(Acid value of the acid-modified polymer)×(Mass ratio of the acid-modified polymer to an entire ablation layer); and wherein the Neutralized salt ratio=(Number of moles of polymer wherein acid in the acid-modified polymer exists in neutralized salt state)/(Total number of moles of the acid-modified polymer).
    Type: Grant
    Filed: October 18, 2022
    Date of Patent: April 30, 2024
    Assignee: ASAHI KASEI KABUSHIKI KAISHA
    Inventor: Norikiyo Nakagawa
  • Patent number: 11970556
    Abstract: The present disclosure is directed to provide a methacrylic resin and a methacrylic resin composition which enable production of a shaped article excellent in color tone in a long path length. A methacrylic resin of the present disclosure has a structural unit (X) including a cyclic structure in a main chain thereof. The methacrylic resin having a glass transition temperature (Tg) of higher than 120° C. and 160° C. or lower. An emission intensity at 514 nm in terms of a concentration of a solution of fluorescein in ethanol is 30×10?10 mol/L or less when a solution containing 2.0 mass % of the methacrylic resin in chloroform is spectroscopically analyzed using an excitation wavelength of 436 nm and a slit width of 2 nm.
    Type: Grant
    Filed: October 10, 2019
    Date of Patent: April 30, 2024
    Assignee: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Yuichiro Inagawa, Junichi Yoshida
  • Publication number: 20240132684
    Abstract: Provided is a glass fabric formed by weaving warp and weft glass yarns comprising a plurality of glass filaments, wherein the surface of the glass fabric is subjected to surface treatment with a surface treatment agent, and the total carbon extraction amount when the glass fabric is subjected to extraction with methanol is greater than 0 and not more than 0.25%.
    Type: Application
    Filed: October 10, 2021
    Publication date: April 25, 2024
    Applicant: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Amane HIROSE, Hiroyuki HONMA
  • Patent number: 11967695
    Abstract: An electrode structure including: an electrode; a current collector facing the electrode; an elastic body located between the electrode and the current collector, the elastic body having conductivity; and an electrode fixing member located between the elastic body and the current collector, wherein at least a part of a peripheral edge of the electrode being fixed between the electrode fixing member and the current collector.
    Type: Grant
    Filed: July 5, 2019
    Date of Patent: April 23, 2024
    Assignee: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Naoyuki Kai, Sohei Iiyama, Akiyasu Funakawa, Yoshifumi Kado
  • Publication number: 20240124690
    Abstract: The present invention provides a rubber composition in which cellulose nanofibers are satisfactorily dispersed in a rubber and which can form molded objects excellent in terms of elastic modulus, wear resistance, etc. This rubber composition comprises cellulose nanofibers, a first rubber component, which is a liquid rubber, and a surfactant. In one embodiment, the cellulose nanofibers contain no ionic groups. In one embodiment, the liquid rubber has a number-average molecular weight of 1,000-80,000.
    Type: Application
    Filed: February 21, 2022
    Publication date: April 18, 2024
    Applicant: Asahi Kasei Kabushiki Kaisha
    Inventors: Ryosuke Ozawa, Kazufumi Kawahara, Atsushi Bamba
  • Patent number: 11959206
    Abstract: Provided is a weft-knitted fabric having excellent stretchability, and providing excellent comfort in a hot environment. The weft-knitted fabric contains non-elastic fibres and elastic fibres, and is characterised: by being formed of a mesh part where a stitch of a welt structure and a stitch of a knit structure are alternately repeated to complete one course, and the course having the same structural arrangement is employed once or continuously repeated twice, and a plain-knit part where a course of an all-knit structure is employed once or continuously repeated up to three times; and in that said mesh part and said plain-knit part are each alternately arranged in the longitudinal direction.
    Type: Grant
    Filed: August 24, 2022
    Date of Patent: April 16, 2024
    Assignee: Asahi Kasei Kabushiki Kaisha
    Inventors: Norito Kashima, Yusuke Kikuyama
  • Patent number: 11960079
    Abstract: To provide an image display device for enabling a polarization axis direction of a reflection type polarizing plate to be identified with simplicity and accuracy, and enabling an adjustment in the polarization reflection axis direction to be made with high accuracy, a wire grid polarizing plate for enabling the polarization axis direction to be examined simply, and the like, a head-up display device (1) in the present invention is an image display device provided with an image display (14) that outputs image light which is polarized light, a reflection type polarizing plate (15) having an reflecting surface (28) that reflects the image light, and a projection plate (11) onto which the image light reflected by the reflection type polarizing plate is projected, and is characterized in that the reflection type polarizing plate allows a bright line (B) as an indicator indicative of the polarization axis direction of the reflecting surface to be observed.
    Type: Grant
    Filed: October 24, 2018
    Date of Patent: April 16, 2024
    Assignee: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Masaru Sugiyama, Naoki Inoue, Nao Kitamichi
  • Publication number: 20240115432
    Abstract: The present invention provides: a nonwoven fabric which gives a sufficiently soft touch when touched by a human hand, while being suppressed in slipperiness between nonwoven fabrics during the production process of a product such as a sanitary material; and a method for producing a nonwoven fabric. One embodiment of the present invention provides a nonwoven fabric which is formed of fibers containing a thermoplastic resin, wherein: the average single fiber fineness of the fibers is 0.7 dtex to 4.0 dtex; the fibers contain 0.01% by mass to 1.5% by mass of a fatty acid amide relative to the total mass of the fibers; and the coverage of the surfaces of the fibers by the fatty acid amide is from 20% to 90%.
    Type: Application
    Filed: June 30, 2022
    Publication date: April 11, 2024
    Applicant: Asahi Kasei Kabushiki Kaisha
    Inventors: Daiki Hirata, Hidesato Shibata, Nobuhiro Inokuma, Eiji Shiota
  • Publication number: 20240117163
    Abstract: According to the present disclosure, a resin raw material composition comprising resin pellets, a powder and a liquid component is provided. The resin raw material composition is a resin raw material composition for molding use or a resin raw material composition for microporous membranes. The resin raw material composition comprises granular bodies in each of which the liquid component is coated on at least a portion of the surface of each of the resin pellets and the powder is adhered to the liquid component.
    Type: Application
    Filed: December 24, 2021
    Publication date: April 11, 2024
    Applicant: Asahi Kasei Kabushiki Kaisha
    Inventors: Yuzuru Sakakibara, Yuka Sato, Kosuke Mizobuchi, Hayato Matsuyama
  • Publication number: 20240121894
    Abstract: Provided is a glass fabric formed by weaving warp and weft glass yarns comprising a plurality of glass filaments, wherein the surface of the glass fabric is subjected to surface treatment with a surface treatment agent, and the difference between the dielectric loss tangent and the bulk dielectric loss tangent of the glass fabric as measured by using a split cylinder resonator is greater than 0 and not more than 1.0×10?3 at 10 GHz.
    Type: Application
    Filed: October 11, 2021
    Publication date: April 11, 2024
    Applicant: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Amane HIROSE, Hiroyuki HONMA
  • Publication number: 20240117127
    Abstract: Provided is a method for producing a resin composition from which can be formed a molded body having excellent tensile elongation and/or rigidity, and more preferably a molded body which stably achieves both high tensile elongation and high rigidity. An aspect of the present invention provides a method for producing a resin composition which contains a first component and a second component, said method comprising a kneading step for kneading the first component and the second component via an extruder provided with a kneading zone that includes a plurality of narrow gap zones in which the gap between a cylinder inner wall and a screw is not more than 2 mm.
    Type: Application
    Filed: February 3, 2022
    Publication date: April 11, 2024
    Applicant: Asahi Kasei Kabushiki Kaisha
    Inventor: Koichi Ueno
  • Patent number: 11955662
    Abstract: The present invention provides (I) a dry-stretched microporous membrane and a separator for an electric storage device excellent in balance among the required performances such as product safety, charge/discharge characteristics, dimension stability, energy cost, consideration to the environment, etc., (II) a separator for an electric storage device superior in product safety obtained by controlling a puncture depth of a microporous membrane comprised in the separator for an electric storage device, or/and (III) a dry-stretched microporous membrane and a separator for an electric power storage device excellent in product safety realized by controlling a porosity and a puncture strength of a thin microporous membrane.
    Type: Grant
    Filed: November 19, 2018
    Date of Patent: April 9, 2024
    Assignees: Asahi Kasei Kabushiki Kaisha, Celgard, LLC
    Inventors: Shinya Hamasaki, Masaki Takahashi, Shohei Mori, Yoshiyuki Ishii, Kenji Ebara, Changqing Adams
  • Publication number: 20240109986
    Abstract: The present invention provides a hydrogenated diene polymer, having a branch number (Bn) measured by viscosity detector-equipped GPC-light scattering measurement of 1.
    Type: Application
    Filed: October 26, 2021
    Publication date: April 4, 2024
    Applicant: Asahi Kasei Kabushiki Kaisha
    Inventors: Shogo Sumitani, Daigo Matsuoka, Atsushi Yasumoto
  • Publication number: 20240111213
    Abstract: A flexographic printing raw plate including at least a support, a photosensitive resin composition layer, an ink absorbing layer, and an infrared ablation layer sequentially stacked, wherein the ink absorbing layer has a film thickness of 5 ?m or more and 50 ?m or less, the ink absorbing layer comprises polymer particles containing a butadiene skeleton and having a carboxyl group and/or a hydroxy group, and/or polymer particles obtained by polymerizing a monobasic or polybasic acid monomer, and a content of the polymer particles is 20% by mass or more and 95% by mass or less based on 100% by mass of the ink absorbing layer.
    Type: Application
    Filed: February 10, 2022
    Publication date: April 4, 2024
    Applicant: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Yuzo FUJIKI, Sota TOYOOKA, Shinji MIYAMOTO, Masashi FURUKAWA
  • Publication number: 20240105396
    Abstract: An object of the present disclosure is to provide a doping method in which the status of the progress of a main reaction can be estimated in the lithium carbonate decomposition-type doping step of a nonaqueous lithium power storage element. The separation method, the doping method, and the doping apparatus according to the present disclosure include calculating a capacitor current density iC and an electrode reaction current density iR based on voltage and current of a cell that are measured during doping of the cell.
    Type: Application
    Filed: May 30, 2022
    Publication date: March 28, 2024
    Applicant: Asahi Kasei Kabushiki Kaisha
    Inventors: Koichi Hiraoka, Yuima Kimura, Ryusuke Okoshi, Yuji Asano, Sumire Jinno, Ryosuke Baba
  • Publication number: 20240102217
    Abstract: The present invention provides: a biodegradable non-woven fabric that is biodegradable, is excellent in terms of uniform moldability and shapability (obtaining, in a shorter time, a neat molded body with no tearing, nap, or stretching irregularities), and which has favorable dimensional stability after molding; and a method for producing a molded body. A biodegradable non-woven fabric according to the present invention comprises fibers containing a biodegradable thermoplastic resin, and is characterized in that: the basis weight is 10-450 g/m2; the difference between the melting point and the crystallization onset temperature of the non-woven fabric is not less than 91° C.; and the cold crystal enthalpy heat quantity ?H of the non-woven fabric is not less than 1.0 J/g.
    Type: Application
    Filed: February 9, 2022
    Publication date: March 28, 2024
    Applicant: Asahi Kasei Kabushiki Kaisha
    Inventors: Yuya Fujimoto, Takashi Komatsu, Eiji Shiota
  • Publication number: 20240101761
    Abstract: The purpose of the present disclosure is to provide a method for manufacturing a polyimide (PI) precursor resin composition that has excellent resolution performance, a broad range of available exposure and good handling properties. Provided is a method for manufacturing a PI precursor resin composition that comprises a PI precursor resin, an exposure light absorber, a photopolymerization initiator and a solvent. The PI precursor resin is selected from among materials having an absorbance parameter Xp for a light species within a range of 0.001-0.20, the exposure light absorber is selected from among materials having an absorbance parameter Xt for the light species within a range of 0.01-0.05, and the photopolymerization initiator is selected from among materials having an absorbance parameter Xr for the light species within a range of 0-0.04.
    Type: Application
    Filed: January 12, 2022
    Publication date: March 28, 2024
    Applicant: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Kohei MURAKAMI, Tomohito OGURA
  • Patent number: 11942621
    Abstract: Provided is a positive electrode precursor having a positive electrode active material layer, wherein the mass proportion A1 of a carbon material in the positive electrode active material layer accounts for 15-65 mass %, the mass proportion A2 of a lithium transition metal oxide in the positive electrode active material layer accounts for 5-35 mass %, the mass proportion A3 of an alkali metal compound in the positive electrode active material layer accounts for 10-50 mass %, A2/A1 is 0.10-2.00, A1/A3 is 0.50-3.00, and the positive electrode active material layer has a peel strength of 0.02-3.00 N/cm.
    Type: Grant
    Filed: November 13, 2018
    Date of Patent: March 26, 2024
    Assignee: Asahi Kasei Kabushiki Kaisha
    Inventors: Kazuteru Umetsu, Keita Kusuzaka, Yuichiro Hirakawa, Nobuhiro Okada