Patents Assigned to Nippon Kayaku Kabushiki-Kaisha
  • Publication number: 20240150605
    Abstract: To provide a pretreatment liquid for inkjet textile printing, having excellent color development in the inkjet textile printing process, excellent color fastness to washing on printed fabrics, and little pretreatment trace residue. The solution therefor is a pretreatment liquid for inkjet textile printing containing 100 parts by mass of a cationic polymer (A), 5 parts by mass or more and less than 100 parts by mass of a (meth)acrylate-based vinyl copolymer (B), and 2 parts by mass or more and less than 30 parts by mass of a crosslinking agent (C), each being in solid content, and water, the liquid having a solid content by weight of 2 mass % or more and 30 mass % or less.
    Type: Application
    Filed: March 4, 2022
    Publication date: May 9, 2024
    Applicant: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Ryutaro ITO, Hiroko HIGUCHI, Makoto TERANISHI, Hayato KUROIWA
  • Publication number: 20240150604
    Abstract: A pretreatment composition is used to form a wet precoat layer for forming an image on a fabric by an inkjet method, wherein [1] the water-based ink composition contains water, a pigment, a resin emulsion, a water-soluble organic solvent, and a surfactant, [2] the pretreatment composition is used to form the wet precoat layer in which an amount of the pretreatment composition applied per unit area is more than 0.035 g/cm2 and less than 0.070 g/cm2, [3] the pretreatment composition contains water, more than 1.4 mass % and less than 10.5 mass % of a cationic polymer, and 0.1 mass % or more and less than 2.7 mass % of a crosslinking agent with respect to the total mass of the pretreatment composition, and [4] the cationic polymer contains at least one selected from an allylamine structural unit, a diallylamine structural unit, a diallylammonium structural unit, and an epihalohydrin structural unit.
    Type: Application
    Filed: March 4, 2022
    Publication date: May 9, 2024
    Applicant: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Makoto TERANISHI, Hiroko HIGUCHI, Ryutaro ITO, Hayato KUROIWA
  • Publication number: 20240149824
    Abstract: A gas generator includes a housing main body made of metal, a holder assembly, and an igniter. The holder assembly includes a holder portion made of metal and a connector portion made of resin. The holder portion includes a first barrel portion and an annular projection. The connector portion includes a second barrel portion and a cylindrical portion. The cylindrical portion is inserted in the housing main body and externally attached to the first barrel portion. As a portion of the housing main body corresponding to the cylindrical portion is decreased in diameter, the cylindrical portion is compressed by being sandwiched between the portion of the housing main body decreased in diameter and the first barrel portion so as to seal a gap between the housing main body and the first barrel portion.
    Type: Application
    Filed: February 16, 2022
    Publication date: May 9, 2024
    Applicant: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Tomoya SHIMIZU, Shinya UEDA, Haruki TAKIZAWA, Yuji INOUE
  • Patent number: 11958940
    Abstract: Provided is a maleimide resin with superior solution stability. Also provided is a cured product with a superior dielectric characteristic that is obtained by curing a curable resin composition in which said maleimide resin is used. The maleimide resin expressed in formula (1), wherein the N,N?-(phenylene-di-(2,2,-propylidene)-di-p-phenylene) bismaleimide content is 90 area % or less. (In formula (1), n is the number of repetitions, and 1<n<5.
    Type: Grant
    Filed: September 6, 2019
    Date of Patent: April 16, 2024
    Assignee: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Kenichi Kuboki, Masataka Nakanishi, Kazuki Matsuura
  • Patent number: 11955394
    Abstract: A hollow package (103) includes a substrate (109), an element (111), a partition wall (113), and a top plate (115) and has one or more closed hollow parts (117) that are covered by the substrate (109), the partition wall (113), and the top plate (115), and the substrate (109), the partition wall (113), and the top plate (115) are sealed with a cured product of a sealing resin composition. The top plate (115) and the partition wall (113) are composed of an organic material, and the thickness of the top plate (115), the thickness of the partition wall (113), the width of the partition wall, and the maximum width of the hollow part (117) are each within respective predetermined ranges. The sealing resin composition comprises (A) an epoxy resin that includes one or more selected from the group consisting of an epoxy resin containing two epoxy groups in the molecule and an epoxy resin containing three or more epoxy resins in the molecule and (B) an inorganic filler.
    Type: Grant
    Filed: December 13, 2019
    Date of Patent: April 9, 2024
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Tadashi Naito, Nao Honda, Yoshihiro Hakone, Hiroki Oshida, Mamoru Sunada
  • Patent number: 11938734
    Abstract: A cleaning solution containing a compound represented by formula (1), a compound represented by formula (2), and water; and an inkjet printer cleaning method using the same. R1—O(EO)m(PO)nH??(1) R2—O(EO)LH??(2) In formula (1), R1 represents a linear or branched C1-C30 alkyl group. EO represents an ethyleneoxy group, and PO represents a propyleneoxy group. m and n each independently represent an integer of 1-5. m:n, which is the ratio between m and n, is at least 1:2 and smaller than 3:2. In formula (2), R2 represents a linear or branched C1-C30 alkyl group, or an aryl group. EO represents an ethyleneoxy group. L represents an integer of at least 10. Formula (1): R1—O(EO)m(PO)nH. Formula (2): R2—O(EO)LH.
    Type: Grant
    Filed: February 4, 2020
    Date of Patent: March 26, 2024
    Assignee: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Hirotoshi Takahashi, Ha Sai, Toru Ishii
  • 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
  • Patent number: D1008927
    Type: Grant
    Filed: January 19, 2022
    Date of Patent: December 26, 2023
    Assignee: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventor: Hideki Otsubo