Patents Assigned to Nippon Kayaku Kabushiki-Kaisha
  • Patent number: 11905417
    Abstract: The present invention relates to an anthraquinone compound represented by formula (1) (in formula (1), R1 represents a C1-9 alkyl group and R2 represents a C1-8 alkyl group): a yellow dichroic pigment that includes this compound; a liquid crystal composition for light control that contains this yellow dichroic pigment and a liquid crystal material; and a light control element that uses this composition.
    Type: Grant
    Filed: June 1, 2021
    Date of Patent: February 20, 2024
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Kohei Ohtani, Hitomi Muto, Saori Suzuki, Takashi Yoshimoto
  • Patent number: 11905356
    Abstract: An object of the present invention is to provide a novel photosensitive resin precursor that can be developed with an alkali and ring-closed even at low temperatures, and preferably has excellent thermal properties and excellent electric properties after curing, and also to provide a use application thereof. As means for achieving the object, disclosed are a bismaleimide compound comprising, in one molecule, two partial structures in each of which a carbon atom having a substituent represented by the following formula (A) (wherein Y represents a direct bond or a divalent linking group), and a carbon atom having a hydroxy group are directly bonded to each other, a polymer which is a self-polymer of the bismaleimide compound, and a benzoxazole which is an intramolecular dehydrated ring-closed product of the polymer.
    Type: Grant
    Filed: March 3, 2022
    Date of Patent: February 20, 2024
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Naoki Kawamoto, Firyon Ko, Taihei Koumoto
  • Patent number: 11905361
    Abstract: This base proliferating agent is represented by formula (1) or (2), where, in formula (1) and (2), R1, R2, and R3 independently represent a hydrogen atom or a substituent and n independently represents an integer from 1 to 4. A base-reactive resin composition can include this base proliferating agent and a base-reactive compound.
    Type: Grant
    Filed: June 28, 2022
    Date of Patent: February 20, 2024
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Kiwamu Terada, Hirokazu Kuwabara
  • Publication number: 20240043637
    Abstract: Provided is a thermally curable resin composition which can give cured objects having low-dielectric characteristics, high heat resistance, a low modulus, and a low water absorption and which has satisfactory adhesiveness to substrates. The thermally curable resin composition comprises: a bismaleimide compound (A) including a constituent unit represented by formula (1) and containing maleimide groups at both ends of the molecular chain; a thermally curable resin or compound (B); and a polymerization initiator (C) and/or a curing accelerator (D).
    Type: Application
    Filed: November 4, 2021
    Publication date: February 8, 2024
    Applicant: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Kazuyoshi YAMAMOTO, Takahumi MIZUGUCHI, Eri YOSHIZAWA, Mao TAKEDA
  • Publication number: 20240024339
    Abstract: Alleviation of vascular disorder such as vasculitis or angialgia is required in the use of a water-soluble drug causing vascular disorder. According to the present invention, a composition containing a water-soluble drug causing vascular disorder; a solution for use in preparation of an administration solution containing a water-soluble drug causing vascular disorder; and a kit including a water-soluble drug preparation causing vascular disorder and the aforementioned solution, each of which contains a nonionic surfactant in an amount necessary for alleviation of vascular disorder, are provided.
    Type: Application
    Filed: November 18, 2021
    Publication date: January 25, 2024
    Applicant: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Takeshi ONDA, Masayuki KITAGAWA, Naoko IGO, Kazuhisa HARA
  • Patent number: 11852783
    Abstract: The present disclosure relates to an optical film includes (A) an optical functional layer and (B) a block layer, and (B) the block layer has a cured product of a resin composition containing (B-1) a thermoplastic resin and (B-2) an ultraviolet curable resin.
    Type: Grant
    Filed: February 18, 2022
    Date of Patent: December 26, 2023
    Assignee: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Yoshihiko Taira, Chihiro Takahashi
  • Publication number: 20230374186
    Abstract: A resin composition contains a maleimide compound (I) that is the product of a reaction between a diamine (a-1) derived from a dimer acid and maleic anhydride, and a reactive polycarboxylic acid resin (II) that is the product of a reaction between a reactive epoxycarboxylate resin, the reactive epoxycarboxylate resin being the product of a reaction between an epoxy resin (b-1) and a compound (b-2) having a polymerizable ethylenically unsaturated group and a carboxy group together in one molecule, and a polybasic acid anhydride (b-3).
    Type: Application
    Filed: November 4, 2021
    Publication date: November 23, 2023
    Applicant: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Kengo NISHIMURA, Takahumi MIZUGUCHI, Kazuyoshi YAMAMOTO, Mai TSUBAMOTO
  • Patent number: 11820904
    Abstract: A black ink composition for inkjet printing that contains a water-soluble organic solvent, a resin emulsion, a dispersing agent, and at least four types of sublimation dyes. At least three of the sublimation dye types are C.I. disperse yellow, C.I. disperse red, and C.I. disperse blue, and at least one of the sublimation dye types has a maximum absorption wavelength in the wavelength band of 640 nm to less than 680 nm as measured from a visible spectral absorption of a solution obtained by dissolving the dye in acetone. An ink set for inkjet printing that includes the black ink composition for inkjet printing, and a method for printing on hydrophobic fibers that uses the composition and the ink set.
    Type: Grant
    Filed: July 11, 2019
    Date of Patent: November 21, 2023
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Makoto Teranishi, Keijyou Sasaki, Rima Akanuma, Hiroko Higuchi, Katsunori Fujii
  • Patent number: 11809078
    Abstract: A purpose of the present invention is to provide a photosensitive resin composition which retains satisfactory image resolution and gives cured objects reduced in wet-heat dissolution or contamination and having satisfactory wet-heat adhesiveness. The photosensitive resin composition of the present invention comprises: (A) a cationic photopolymerization initiator which comprises a salt of a cation with an anion represented by formula (1) (wherein R1 to R4 each independently represent a C1?18 alkyl or C6-14 aryl group, provided that at least one of R1 to R4 represents a C6-14 aryl group); and (B) an epoxy compound. R1 to R4 may be each independently either a phenyl group having one or more perfluoroalkyl groups as substituents or a phenyl group having one or more fluorine atoms as substituents. R1 to R4 may be each independently a pentafluorophenyl or bis(trifluoromethyl)phenyl group.
    Type: Grant
    Filed: November 29, 2018
    Date of Patent: November 7, 2023
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventor: Naoko Imaizumi
  • Patent number: 11802208
    Abstract: The present disclosure is a stilbene-based compound or a salt thereof represented by a following formula (1), wherein a group X represents a nitro group or an amino group optionally having a substituent; a group Y represents an amide group optionally having a substituent or a naphthotriazole group optionally having a substituent; and p and q each independently represent an integer of 0 to 2.
    Type: Grant
    Filed: January 23, 2020
    Date of Patent: October 31, 2023
    Assignees: NIPPON KAYAKU KABUSHIKI KAISHA, POLATECHNO CO., LTD.
    Inventors: Ryoutarou Morita, Noriaki Mochizuki
  • Publication number: 20230202422
    Abstract: A gas generator includes an igniter assembled to one end portion of a housing, a gastight container arranged in the inside of the housing, and a coil spring interposed between the one end portion of the housing and the gastight container. The gastight container melts or bursts as a result of activation of the igniter. A gas generating agent is accommodated in the gastight container. The coil spring serves to fix the gastight container in the inside of the housing. The coil spring is arranged substantially coaxially with an ignition portion to surround the ignition portion without interposition of another member between the coil spring and the ignition portion, so as to restrict a degree of opening of a cup body included in the ignition portion of the igniter at the time of cleavage of the cup body.
    Type: Application
    Filed: April 13, 2021
    Publication date: June 29, 2023
    Applicant: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventor: Yuji INOUE
  • Patent number: 11667261
    Abstract: A gas generator includes a housing constructed by combining and joining a plurality of shell members. One of the plurality of shell members includes a cylindrical portion and a flange portion. The cylindrical portion is provided with a plurality of gas discharge openings including gas discharge openings different in opening area from one another. The flange portion is shaped such that a distance from an axial line of the cylindrical portion to an outer edge of the flange portion is non-uniform. When a perpendicular line is drawn to the axial line from a maximum outer geometry position in the outer edge of the flange portion most distant from the axial line, a gas discharge opening arranged closest to the perpendicular line is a gas discharge opening other than a gas discharge opening largest in opening area among the plurality of gas discharge openings.
    Type: Grant
    Filed: April 7, 2021
    Date of Patent: June 6, 2023
    Assignee: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Shinya Ueda, Satoshi Ohsugi, Hiroaki Koyama, Haruki Takizawa
  • Publication number: 20230161090
    Abstract: An object of the present invention is to provide an eyewear such as polarized sunglasses using an optical film including a light reflective layer and a polarizing element layer, the eyewear having a metallic color tone conforming to signal visibility standards of various countries, and an optical film and an optical laminate for the eyewear. The present invention provides an optical film obtained by laminating a light reflective layer and a polarizing element layer, in which the optical film satisfies one or more of conditions (a) to (d).
    Type: Application
    Filed: April 2, 2021
    Publication date: May 25, 2023
    Applicants: NIPPON KAYAKU KABUSHIKI KAISHA, MITSUBISHI GAS CHEMICAL COMPANY, INC., MGC FILSHEET CO., LTD.
    Inventors: Yoshiyuki YAHAGI, Saki HOSHINO, Yuki AIKAWA, Katsuyuki MURAI, Kyousuke NAKAMURA, Aya SAKAJIRI, Masashi KANEDA
  • Publication number: 20230143920
    Abstract: The present disclosure relates to a dissimilar metal-doped cerium oxide including cerium oxide and a dissimilar metal other than the cerium oxide, in which a relationship of the following formula (1) is satisfied: 0.8?|(D90)?(D10)|/D50?2.0??(1) (in the formula (1), D10, D50, and D90 respectively represent the following: D10: particle diameter at which cumulative volume fraction is 10% D50: particle diameter at which cumulative volume fraction is 50% D90: particle diameter at which cumulative volume fraction is 90%).
    Type: Application
    Filed: March 24, 2021
    Publication date: May 11, 2023
    Applicant: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Tomoyuki KAWAMURA, Takanori NAKANO, Masahiro ABE
  • Publication number: 20230093952
    Abstract: An aerial vehicle safety apparatus includes a safety mechanism, a drive mechanism, an ejection mechanism, and a control mechanism. The safety mechanism is used for securing safety of at least one of an aerial vehicle and an object outside the aerial vehicle. The drive mechanism includes at least one drive unit serving as a drive source of the safety mechanism. The ejection mechanism ejects the drive mechanism together with the safety mechanism. The control mechanism controls operations of the drive mechanism for the drive mechanism to drive the safety mechanism after the ejection mechanism starts ejection of the safety mechanism.
    Type: Application
    Filed: November 15, 2022
    Publication date: March 30, 2023
    Applicant: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Yasuhiko YAGIHASHI, Hiroshi NAKAMURA, Koichi SASAMOTO, Dairi KUBO, Takahiro OOI
  • Patent number: 11608316
    Abstract: This compound which has excellent solvent solubility and compatibility with a resin, and which can generate bases and radicals with high efficiency by being irradiated with active energy rays, is represented by formula (1), where, in formula (1), R1, R2, R3, R5 and R6 represent a hydroxy group or an alkoxy group; the R4's independently represent an organic group containing a thioether bond; R7 and R9 independently represent a hydrogen atom or an alkyl group with 1 to 4 carbons; R8 represents an alkylene group or an arylene group; and X represents an oxygen atom or a sulfur atom. A photopolymerization initiator can include said novel compound; and a photosensitive resin composition can include said photopolymerization initiator, from which a cured product can be obtained that has high sensitivity and no metal corrosion.
    Type: Grant
    Filed: February 28, 2019
    Date of Patent: March 21, 2023
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Kiwamu Terada, Hirokazu Kuwabara
  • Patent number: 11591110
    Abstract: An aerial vehicle safety apparatus includes an expandable object and an ejection apparatus. The ejection apparatus includes a container that accommodates the expandable object and has an opening provided on one end side, a moving member provided in the container, the moving member including an emission base carrying the expandable object on a side of the opening, the moving member being movable along an inner wall of the container, and a driver that ejects the expandable object by moving the moving member toward the opening. A space located opposite to the opening when viewed from the emission base and surrounded by the container and the moving member communicates with a space located outside the space through a communication portion.
    Type: Grant
    Filed: June 19, 2018
    Date of Patent: February 28, 2023
    Assignee: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Hiroshi Nakamura, Yasuhiko Yagihashi, Koichi Sasamoto, Takahiro Ooi
  • Publication number: 20230020130
    Abstract: A catalyst containing, as an essential component, molybdenum; bismuth; and cobalt, in which, with respect to a peak intensity at 2?=25.3°±0.2° in an X-ray diffraction pattern obtained by using CuK? rays as an X-ray source, a changing rate (Q1) per 1000 hours of reaction time represented by the following formulae (1) to (4) is 16 or less. Q1={(U1/F1?1)×100}/T×1000??(1) F1=(peak intensity of catalyst before oxidation reaction at 2?=25.3°±)0.2°/(peak intensity of catalyst before oxidation reaction at 2?=26.5°±0.2°)×100??(2) U1=(peak intensity of catalyst after oxidation reaction at 2?=25.3°±0.2°)/(peak intensity of catalyst after oxidation reaction at 2?=26.5°±0.
    Type: Application
    Filed: January 8, 2021
    Publication date: January 19, 2023
    Applicant: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Shogo YASUDA, Shigeki OKUMURA, Ryota HIRAOKA, Seiichiro FUKUNAGA
  • Publication number: 20230015502
    Abstract: A catalyst containing, as an essential component, molybdenum; bismuth; and cobalt, in which a sum (S) of ratios of peak intensities expressed by the following formula in an X-ray diffraction pattern obtained by using CuK? rays as an X-ray source is 42 or more and 113 or less. S={(peak intensity at 2?=14.1°±0.1°+(peak intensity at 2?=25.4°±0.1°)+(peak intensity at 2?=28.5°±0.1°)}/(peak intensity at 2?=26.5°±0.
    Type: Application
    Filed: January 8, 2021
    Publication date: January 19, 2023
    Applicant: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Shigeki OKUMURA, Shogo YASUDA, Tomohiro OBATA, Seiichiro FUKUNAGA, Tomoyuki KAWAMURA
  • Patent number: D1008927
    Type: Grant
    Filed: January 19, 2022
    Date of Patent: December 26, 2023
    Assignee: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventor: Hideki Otsubo