Patents Assigned to Nippon Kayaku Kabushiki-Kaisha
-
Publication number: 20240150605Abstract: 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: ApplicationFiled: March 4, 2022Publication date: May 9, 2024Applicant: NIPPON KAYAKU KABUSHIKI KAISHAInventors: Ryutaro ITO, Hiroko HIGUCHI, Makoto TERANISHI, Hayato KUROIWA
-
Publication number: 20240150604Abstract: 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: ApplicationFiled: March 4, 2022Publication date: May 9, 2024Applicant: NIPPON KAYAKU KABUSHIKI KAISHAInventors: Makoto TERANISHI, Hiroko HIGUCHI, Ryutaro ITO, Hayato KUROIWA
-
Publication number: 20240149824Abstract: 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: ApplicationFiled: February 16, 2022Publication date: May 9, 2024Applicant: NIPPON KAYAKU KABUSHIKI KAISHAInventors: Tomoya SHIMIZU, Shinya UEDA, Haruki TAKIZAWA, Yuji INOUE
-
Patent number: 11958940Abstract: 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: GrantFiled: September 6, 2019Date of Patent: April 16, 2024Assignee: NIPPON KAYAKU KABUSHIKI KAISHAInventors: Kenichi Kuboki, Masataka Nakanishi, Kazuki Matsuura
-
Patent number: 11955394Abstract: 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: GrantFiled: December 13, 2019Date of Patent: April 9, 2024Assignee: Nippon Kayaku Kabushiki KaishaInventors: Tadashi Naito, Nao Honda, Yoshihiro Hakone, Hiroki Oshida, Mamoru Sunada
-
Patent number: 11938734Abstract: 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: GrantFiled: February 4, 2020Date of Patent: March 26, 2024Assignee: NIPPON KAYAKU KABUSHIKI KAISHAInventors: Hirotoshi Takahashi, Ha Sai, Toru Ishii
-
Patent number: 11905417Abstract: 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: GrantFiled: June 1, 2021Date of Patent: February 20, 2024Assignee: Nippon Kayaku Kabushiki KaishaInventors: Kohei Ohtani, Hitomi Muto, Saori Suzuki, Takashi Yoshimoto
-
Patent number: 11905356Abstract: 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: GrantFiled: March 3, 2022Date of Patent: February 20, 2024Assignee: Nippon Kayaku Kabushiki KaishaInventors: Naoki Kawamoto, Firyon Ko, Taihei Koumoto
-
Patent number: 11905361Abstract: 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: GrantFiled: June 28, 2022Date of Patent: February 20, 2024Assignee: Nippon Kayaku Kabushiki KaishaInventors: Kiwamu Terada, Hirokazu Kuwabara
-
Publication number: 20240043637Abstract: 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: ApplicationFiled: November 4, 2021Publication date: February 8, 2024Applicant: NIPPON KAYAKU KABUSHIKI KAISHAInventors: Kazuyoshi YAMAMOTO, Takahumi MIZUGUCHI, Eri YOSHIZAWA, Mao TAKEDA
-
Publication number: 20240024339Abstract: 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: ApplicationFiled: November 18, 2021Publication date: January 25, 2024Applicant: NIPPON KAYAKU KABUSHIKI KAISHAInventors: Takeshi ONDA, Masayuki KITAGAWA, Naoko IGO, Kazuhisa HARA
-
Patent number: 11852783Abstract: 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: GrantFiled: February 18, 2022Date of Patent: December 26, 2023Assignee: NIPPON KAYAKU KABUSHIKI KAISHAInventors: Yoshihiko Taira, Chihiro Takahashi
-
Publication number: 20230374186Abstract: 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: ApplicationFiled: November 4, 2021Publication date: November 23, 2023Applicant: NIPPON KAYAKU KABUSHIKI KAISHAInventors: Kengo NISHIMURA, Takahumi MIZUGUCHI, Kazuyoshi YAMAMOTO, Mai TSUBAMOTO
-
Patent number: 11820904Abstract: 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: GrantFiled: July 11, 2019Date of Patent: November 21, 2023Assignee: Nippon Kayaku Kabushiki KaishaInventors: Makoto Teranishi, Keijyou Sasaki, Rima Akanuma, Hiroko Higuchi, Katsunori Fujii
-
Patent number: 11809078Abstract: 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: GrantFiled: November 29, 2018Date of Patent: November 7, 2023Assignee: Nippon Kayaku Kabushiki KaishaInventor: Naoko Imaizumi
-
Patent number: 11802208Abstract: 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: GrantFiled: January 23, 2020Date of Patent: October 31, 2023Assignees: NIPPON KAYAKU KABUSHIKI KAISHA, POLATECHNO CO., LTD.Inventors: Ryoutarou Morita, Noriaki Mochizuki
-
Publication number: 20230202422Abstract: 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: ApplicationFiled: April 13, 2021Publication date: June 29, 2023Applicant: NIPPON KAYAKU KABUSHIKI KAISHAInventor: Yuji INOUE
-
Patent number: 11667261Abstract: 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: GrantFiled: April 7, 2021Date of Patent: June 6, 2023Assignee: NIPPON KAYAKU KABUSHIKI KAISHAInventors: Shinya Ueda, Satoshi Ohsugi, Hiroaki Koyama, Haruki Takizawa
-
Publication number: 20230161090Abstract: 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: ApplicationFiled: April 2, 2021Publication date: May 25, 2023Applicants: 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: D1008927Type: GrantFiled: January 19, 2022Date of Patent: December 26, 2023Assignee: NIPPON KAYAKU KABUSHIKI KAISHAInventor: Hideki Otsubo