Patents Assigned to Dainichiseika Color & Chemicals Mfg. Co., Ltd.
  • Patent number: 10655017
    Abstract: The present invention provides a pyrimidoquinazoline pigment having a novel pyrimidine skeleton, the pyrimidoquinazoline pigment having excellent pigment properties, such as coloring power and durability, and excellent infrared reflectivity and a method for producing the pyrimidoquinazoline pigment, and a pigment colorant using the pyrimidoquinazoline pigment. The present invention relates to a pyrimidoquinazoline pigment represented by the following formula (1), wherein R1 and R2 each independently represent a benzene ring or a naphthalene ring optionally having a substituent, and a method for producing the pyrimidoquinazoline pigment. In addition, the present invention relates to a pigment colorant containing the pyrimidoquinazoline pigment.
    Type: Grant
    Filed: May 12, 2017
    Date of Patent: May 19, 2020
    Assignee: DAINICHISEIKA COLOR & CHEMICALS MFG. CO., LTD.
    Inventors: Kazuki Iguchi, Naomi Oguma, Atsushi Nogami, Shuwa Ozako
  • Patent number: 10619070
    Abstract: There is provided a coating liquid capable of forming a coating film that is excellent in adhesiveness to the surface of a base material such as a metal, glass, or a resin even though the coating film contains PVDF which exhibits a remarkable non-tackiness and that can exhibit various desired functionalities such as non-tackiness, an antifouling property, chemical resistance, a sliding property, water repellency, electrical conductivity, an antifungal/antimicrobial property, and a deodorizing property. The coating liquid contains a polar solvent such as N,N-dimethylformamide or N-methyl-2-pyrrolidone, a hydrophilic polymer such as a chitosan derivative or a cellulose derivative, and polyvinylidene fluoride.
    Type: Grant
    Filed: August 11, 2015
    Date of Patent: April 14, 2020
    Assignee: DAINICHISEIKA COLOR & CHEMICALS MFG. CO., LTD.
    Inventors: Nobuyuki Kobayashi, Takanori Sannan
  • Publication number: 20200062965
    Abstract: There is provided a technique for producing a quinacridone solid solution pigment, the technique making it possible to obtain a quinacridone solid solution pigment which produces a colored product having high chroma and a bluish hue, more preferably which has controlled particle diameters.
    Type: Application
    Filed: October 10, 2017
    Publication date: February 27, 2020
    Applicant: Dainichiseika Color & Chemicals MFG. Co., Ltd.
    Inventors: Naoto KAMATA, Toshiyuki HITOTSUYANAGI, Sachio YOSHIKAWA, Satoshi MINAMI
  • Patent number: 10549235
    Abstract: The present invention provides a method for performing a decomposition treatment on a VOC and/or a gas-phase inorganic reducing compound in a gas through ozone oxidation, by which further enhancement of efficiency in oxidative decomposition reaction by ozone is achieved, a decomposition treatment can be performed efficiently on a high-flow rate exhaust gas containing substances such as a VOC and a malodorous substance in low concentrations, and the amount of ozone to be used can be reduced in a method for performing oxidative decomposition treatment with ozone on a VOC and the like using a high silica adsorbent.
    Type: Grant
    Filed: February 4, 2016
    Date of Patent: February 4, 2020
    Assignees: FUTAMURA KAGAKU KABUSHIKI KAISHA, DAINICHISEIKA COLOR & CHEMICAL MFG. CO., LTD.
    Inventors: Jun Izumi, Kaori Fukahori, Toru Kawakami, Akira Nishio
  • Patent number: 10493423
    Abstract: The present invention provides a method for performing a purification treatment on a harmful substance-containing liquid, the method enabling an efficient purification treatment of a harmful substance-containing liquid by using dissolved ozone being an oxidizing agent with high level of safety, and a harmful substance-containing liquid purification treatment apparatus for carrying out the method.
    Type: Grant
    Filed: February 4, 2016
    Date of Patent: December 3, 2019
    Assignees: FUTAMURA KAGAKU KABUSHIKI KAISHA, DAINICHISEIKA COLOR & CHEMICALS MFG. CO., LTD.
    Inventors: Jun Izumi, Yusuke Ideta, Ryuta Nishide, Toru Kawakami, Akira Nishio, Seigo Miyashita, Satoru Nakayasu
  • Patent number: 10400115
    Abstract: An aqueous liquid composition contains a water-based medium containing water, a polymer having at least one type of groups selected from hydroxyl groups and amino groups, and phosphonobutanetricarboxylic acid. The aqueous liquid composition contains low-cost materials having low environmental load, can retain adequate viscosity even when stored over a long term, and can form a functional coating film having excellent adhesiveness to a base material and superb durability, solvent resistance and waterproofness and capable of exhibiting various functions led by electrical conductivity and hydrophilicity.
    Type: Grant
    Filed: August 1, 2013
    Date of Patent: September 3, 2019
    Assignee: Dainichiseika Color & Chemicals Mfg. Co., Ltd.
    Inventors: Yoshihiko Iijima, Kozaburo Hayashi, Yosuke Ichinomiya
  • Patent number: 10344166
    Abstract: There are provided: a near-infrared non-absorbing black azo pigment having a sufficient blackness, having an excellent durability such as solvent resistance, and having a novel skeleton; and a colorant that uses the black azo pigment and is useful for forming a black matrix or a light-shielding film. The black azo pigment is represented by the following formula (1), wherein R1 represents an aryl group optionally having a substituent. In addition, the colorant contains the black azo pigment and is suitable as a material or the like for forming a black matrix for a color filter or for forming a light-shielding film.
    Type: Grant
    Filed: April 14, 2017
    Date of Patent: July 9, 2019
    Assignee: DAINICHISEIKA COLOR & CHEMICALS MFG. CO., LTD.
    Inventors: Kazuki Iguchi, Naomi Oguma, Shuwa Ozako
  • Publication number: 20190071534
    Abstract: A fiber formed from a resin including a silicone-modified polyurethane resin comprising the reaction products of a polyol (A), a chain extender (B), an active-hydrogen-group-containing organopolysiloxane (C), and a polyisocyanate (D), wherein the active-hydrogen-group-containing organopolysiloxane (C) contains an active-hydrogen-group-containing organopolysiloxane (C-1) having a carbinol group at only one terminal.
    Type: Application
    Filed: March 31, 2017
    Publication date: March 7, 2019
    Applicants: SHIN-ETSU CHEMICAL CO., LTD., DAINICHISEIKA COLOR & CHEMICALS MFG. CO., LTD., SHINSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION
    Inventors: Hatsuhiko HATTORI, Masaki TANAKA, Hiromasa SATO, Shota IINO, Motoaki UMEZU, Toshihisa TANAKA, Mikihisa KONDO
  • Publication number: 20190048195
    Abstract: There are provided: a near-infrared non-absorbing black azo pigment having a sufficient blackness, having an excellent durability such as solvent resistance, and having a novel skeleton; and a colorant that uses the black azo pigment and is useful for forming a black matrix or a light-shielding film. The black azo pigment is represented by the following formula (1), wherein R1 represents an aryl group optionally having a substituent. In addition, the colorant contains the black azo pigment and is suitable as a material or the like for forming a black matrix for a color filter or for forming a light-shielding film.
    Type: Application
    Filed: April 14, 2017
    Publication date: February 14, 2019
    Applicant: Dainichiseika Color & Chemicals MFG. Co., Ltd.
    Inventors: Kazuki IGUCHI, Naomi OGUMA, Hidekazu OSAKO
  • Patent number: 10081001
    Abstract: An object of the present invention is to provide a high-performance polymer dispersant that can be applied to cellulose being a hydrophilic substance, and another object of the present invention is to provide a technology for practical application of obtaining a cellulose-dispersed resin composition that realizes stable dispersion of cellulose in a simpler manner and in an environmentally conscious manner that never uses a large amount of organic solvents when the polymer dispersant for cellulose is applied to cellulose and disperses the cellulose in a thermoplastic resin.
    Type: Grant
    Filed: March 30, 2015
    Date of Patent: September 25, 2018
    Assignees: DAINICHISEIKA COLOR & CHEMICALS MFG. CO., LTD., KYOTO UNIVERSITY
    Inventors: Takahiro Imai, Taiyo Aoyagi, Hiroyuki Shimanaka, Yoshinobu Tsujii, Keita Sakakibara, Atsushi Goto
  • Patent number: 10077357
    Abstract: An object of the present invention is to provide a technology of dispersing cellulose readily in a hydrophobic substance such as a resin by treating cellulose being a hydrophilic substance in a system that contains water as a main medium with a polymer dispersant, which has been developed for dispersing a fine and hydrophobic substance such as a pigment, in a simple and efficient manner without conducting surface modification of nanocellulose or other treatments.
    Type: Grant
    Filed: March 30, 2015
    Date of Patent: September 18, 2018
    Assignees: DAINICHISEIKA COLOR & CHEMICALS MFG. CO., LTD., KYOTO UNIVERSITY
    Inventors: Takahiro Imai, Taiyo Aoyagi, Hiroyuki Shimanaka, Yoshinobu Tsujii, Keita Sakakibara, Atsushi Goto
  • Patent number: 10072195
    Abstract: The thermally conductive composite oxide of the present invention has excellent physical properties, such as high thermal conductivity, water resistance, acid resistance, electric resistance, and electric insulation, required for coating films, films, and articles thereof. Paints or resins including the composite oxide can provide coating films, films, and articles having such properties without treating of a surface, etc. The composite oxide has a spinel structure and contains aluminum as a main metal component and at least one metal other than aluminum, which is magnesium, zinc, calcium, and/or strontium, and has a ratio (b mol)/(a mol) in a range of 0.1 or more and 1.0 or less, where the ratio (b mol)/(a mol) is a number of moles (b) of the metal other than aluminum to that of moles (a) of an aluminum element derived from an alumina-based compound. The thermally conductive composite oxide has Mohs hardness of less than 9.
    Type: Grant
    Filed: March 12, 2015
    Date of Patent: September 11, 2018
    Assignee: DAINICHISEIKA COLOR & CHEMICALS MFG. CO., LTD.
    Inventors: Akira Nishio, Toru Kawakami, Kenichi Yamane, Naotsugu Yamamura, Shingo Tominaga
  • Patent number: 10066048
    Abstract: Provided are a self-crosslinking polyhydroxy polyurethane resin derived from a reaction of a 5-membered cyclic carbonate compound and an amine compound and having masked isocyanate groups in its structure; a process for producing the resin; an imitation leather composed of a base fabric and a resin composition composed of the resin as its principal component and impregnated in or laminated on the base fabric; as kin material made of a thermoplastic polyolefin resin, said skin material including a thermoplastic polyolefin resin sheet and a top coat layer formed directly or via a primer layer on the sheet, wherein the top coat layer has been formed with a resin composition composed of the resin as its principal component; and a weather strip material composed, as its principal components, of the resin and a specific diorganopolysiloxane and/or a silicone oil.
    Type: Grant
    Filed: June 21, 2011
    Date of Patent: September 4, 2018
    Assignees: DAINICHISEIKA COLOR & CHEMICALS MFG. CO., LTD., UKIMA CHEMICALS & COLOR MFG. CO., LTD.
    Inventors: Kazuyuki Hanada, Kazuya Kimura, Kenichi Takahashi, Osamu Kawakami, Manabu Uruno
  • Patent number: 10008300
    Abstract: The present invention is a method for eliminating radioactive iodine using a hydrophilic resin that adsorbs radioactive iodine, wherein the hydrophilic resin is at least one selected from the group consisting of a hydrophilic polyurethane resin, a hydrophilic polyurea resin, and a hydrophilic polyurethane-polyurea resin and has a hydrophilic segment and, in the principal chain and/or a side chain in the structure thereof, has a tertiary amino group or has a tertiary amino group and polysiloxane segment. By means of the present invention, a novel method for eliminating radioactive iodine is provided that is simple and low-cost, furthermore does not require an energy source such as electricity, moreover can take in and stably immobilize the eliminated radioactive iodine within a solid, and is capable of reducing the volume of radioactive waste as necessary.
    Type: Grant
    Filed: March 12, 2014
    Date of Patent: June 26, 2018
    Assignees: Dainichiseika Color & Chemicals Mfg. Co. Ltd., Ukima Chemicals & Color Mfg. Co., Ltd.
    Inventors: Kazuyuki Hanada, Manabu Uruno, Kazuya Kimura, Kenichi Takahashi
  • Patent number: 10000609
    Abstract: Provided are a self-crosslinking polysiloxane-modified polyhydroxy polyurethane resin derived from a reaction of a 5-membered cyclic carbonate polysiloxane compound represented by the following formula (1) and an amine compound and having polysiloxane segments and masked isocyanate groups in its structure: wherein A means and its production process. The present invention can provide a polyhydroxy polyurethane resin, the development of applications of which has not moved ahead in the prior art, as a novel self-crosslinking polyhydroxy polyurethane resin that enables to provide products excellent in lubricity, abrasion resistance, chemical resistance, non-tackiness, heat resistance and the like, is useful from the viewpoint of the reduction of warming gas, and is responsive to the environment.
    Type: Grant
    Filed: August 11, 2011
    Date of Patent: June 19, 2018
    Assignees: DAINICHISEIKA COLOR & CHEMICALS MFG. CO., LTD., UKIMA CHEMICALS & COLOR MFG. CO., LTD.
    Inventors: Kazuyuki Hanada, Kazuya Kimura, Kenichi Takahashi, Osamu Kawakami, Manabu Uruno
  • Patent number: 9988480
    Abstract: The present invention provides a pigment dispersant that exhibits high fine dispersibility, stability, and fluidity in a small amount, a pigment dispersion liquid including the pigment dispersant, and a process of producing the pigment dispersant and pigment dispersion liquid. The pigment dispersant contains as a main component, a graft copolymer formed through living radical polymerization using two or more monomers including a methacrylate A having an acidic group or a basic group and a methacrylate-based macromonomer B having a methacrylate residue at one terminal of a particular polymer chain that has a molecular weight of from 500 to 5000. A ratio of a total molar number of the methacrylate-based monomers relative to 1 mol of a polymerization-initiating compound in the raw material monomers is from 20 to 50 mol. A ratio of the B component-derived polymer chain to the graft copolymer is from 50 to 90 mass %.
    Type: Grant
    Filed: July 10, 2017
    Date of Patent: June 5, 2018
    Assignee: DAINICHISEIKA COLOR & CHEMICALS MFG. CO., LTD.
    Inventors: Hiroyuki Shimanaka, Yoshikazu Murakami, Yoichi Tagi
  • Publication number: 20180151264
    Abstract: The present invention is a method for eliminating radioactive iodine using a hydrophilic resin that adsorbs radioactive iodine, wherein the hydrophilic resin is at least one selected from the group consisting of a hydrophilic polyurethane resin, a hydrophilic polyurea resin, and a hydrophilic polyurethane-polyurea resin and has a hydrophilic segment and, in the principal chain and/or a side chain in the structure thereof, has a tertiary amino group or has a tertiary amino group and polysiloxane segment. By means of the present invention, a novel method for eliminating radioactive iodine is provided that is simple and low-cost, furthermore does not require an energy source such as electricity, moreover can take in and stably immobilize the eliminated radioactive iodine within a solid, and is capable of reducing the volume of radioactive waste as necessary.
    Type: Application
    Filed: March 12, 2014
    Publication date: May 31, 2018
    Applicants: Ukima Chemicals & Color Mfg. Co., Ltd., Dainichiseika Color & Chemicals Mfg.Co., Ltd.
    Inventors: Kazuyuki HANADA, Manabu URUNO, Kazuya KIMURA, Kenichi TAKAHASHI
  • Patent number: 9978475
    Abstract: Provided by the present invention is a conductive resin composition which has, by adding small amount of a carbon nanotube thereto, high conductivity and superior processability including moldability while keeping original physical properties owned by the thermoplastic resin itself. Provided is a method for producing a conductive resin composition, that is, a method for producing a conductive resin composition which contains a carbon nanotube and a thermoplastic resin, wherein the method contains following steps of (A) and (B); namely, (A) a step of mixing and dispersing the carbon nanotube, a solvent, and the thermoplastic resin, thereby obtaining a carbon nanotube resin mixture, and (B) a step of removing the solvent while kneading the carbon nanotube resin mixture. Provided further is a conductive resin composition obtained by the said production method.
    Type: Grant
    Filed: January 22, 2013
    Date of Patent: May 22, 2018
    Assignee: DAINICHISEIKA COLOR & CHEMICALS MFG. CO., LTD.
    Inventors: Hisaki Asakawa, Masayuki Shibata, Noritaka Sakuta, Takuma Itoh
  • Patent number: 9966596
    Abstract: This invention relates to a coating formulation, a coating formulation for manufacturing an electrode plate and an undercoating formulation, and their use. These coating formulations are all characterized by containing, in a polar solvent, a hydroxyl-containing resin and an organic acid and/or a derivative thereof. The hydroxyl-containing resin is at least one of (1) a polyvinyl acetal resin, (2) an ethylene-vinyl alcohol copolymer, (3) a modified and/or unmodified polyvinyl alcohol, and (4) a cyanoethyl-containing polymer. According to the present invention, there is provided a coating formulation capable of forming a coating of excellent adhesion and solvent resistance on a surface of a metal material such as an aluminum material.
    Type: Grant
    Filed: January 27, 2015
    Date of Patent: May 8, 2018
    Assignee: DAINICHISEIKA COLOR & CHEMICALS MFG. CO., LTD.
    Inventors: Takanori Sannan, Shinya Tsuchida, Nobuyuki Kobayashi
  • Patent number: 9959985
    Abstract: Provided is an aqueous liquid composition including a water-based medium containing water, a polymer having at least one type of groups selected from hydroxyl groups and amino groups, and phosphonobutanetricarboxylic acid. The polymer is at least one polymer selected from the group consisting of a polysaccharide, polyamino acid, polyvinyl alcohol, polyallylamine, polyvinylamine, a polyamidine, a polyethylenimine, and their derivatives.
    Type: Grant
    Filed: August 21, 2012
    Date of Patent: May 1, 2018
    Assignee: DAINICHISEIKA COLOR & CHEMICALS MFG. CO., LTD.
    Inventors: Yosuke Ichinomiya, Kozaburo Hayashi, Yoshihiko Iijima, Nobuyuki Kobayashi