Patents Assigned to DNP Fine Chemicals Co., Ltd.
  • Patent number: 10875340
    Abstract: This receiving solution for inkjet recording inks contains a resin emulsion as the resin; the polyvalent metal salt contains ions of a polyvalent metal and anions of an organic material; the (organic value)/(inorganic value) ratio, namely the OV/IV value of the anions of the organic material is 0.25 or more but less than 1.30; the HLB value of the surfactant is from 9 to 19 (inclusive); and the surfactant is represented by general formula (1). (In the formula, R1 represents an optionally branched alkylene group having 1 to 5 carbon atoms (inclusive); R2 represents a hydrogen atom or an optionally branched alkyl group having 1 to 3 carbon atoms (inclusive); R3 represents a hydrogen atom or an optionally branched alkyl group having 1 to 3 carbon atoms (inclusive); A represents 2 or 3; X represents ethylene oxide and/or propylene oxide; and n represents an integer).
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: December 29, 2020
    Assignee: DNP Fine Chemicals Co., Ltd.
    Inventors: Yoshiya Maegawa, Fumie Yamazaki, Naoki Shiraishi, Kisei Matsumoto, Kentaro Otomo
  • Patent number: 10563081
    Abstract: A main object of the present invention is to provide an ink composition for ink-jet recording capable of forming an ink film excellent in both film strength and scratch resistance. The present invention achieves the object by providing an ink composition for ink-jet recording comprising: an aqueous solvent including water and water-soluble organic solvent; a coloring agent; a resin emulsion; and a surfactant; wherein the resin emulsion includes a silicon-acrylic resin emulsion and a resin emulsion other than the silicon-acrylic resin emulsion; a content ratio of the resin emulsion to the coloring agent (content of the resin emulsion/content of the coloring agent) is 1/5 or more and 15/1 or less; and a content ratio of the silicon-acrylic resin emulsion to the coloring agent (content of the silicon-acrylic resin emulsion/content of the coloring agent) is 1/20 or more and 5/1 or less.
    Type: Grant
    Filed: November 8, 2016
    Date of Patent: February 18, 2020
    Assignee: DNP Fine Chemicals Co., LTD.
    Inventors: Kisei Matsumoto, Naoki Shiraishi, Kentaro Otomo, Fumie Yamazaki, Yukio Sugita
  • Patent number: 10253196
    Abstract: Provided is an inkjet recording ink composition which has excellent water resistance and solvent resistance and also has excellent ejection stability. Disclosed is an inkjet recording ink composition which contains a resin having an acid value of less than 10 mg KOH/g, an amino alcohol having a boiling point of 100° C. or more and 300° C. or less, a pigment, and a solvent, in which the resin is in an emulsion state.
    Type: Grant
    Filed: September 2, 2014
    Date of Patent: April 9, 2019
    Assignee: DNP FINE CHEMICALS CO., LTD.
    Inventors: Yukio Sugita, Fumie Yamazaki, Masaki Inumaru, Kisei Matsumoto, Naoki Shiraishi
  • Patent number: 10072164
    Abstract: An object of the present invention is to provide: a pigment dispersion liquid for inkjet ink, which is stable for a long period of storage and which increases repellency to ink ejection surface. Disclosed is a pigment dispersion liquid for inkjet ink, comprising: a pigment; a pigment dispersing agent; and a compound having an ethylenically unsaturated double bond, wherein the pigment dispersing agent has an amine value of 20 mgKOH/g or less and an acid value of 10 mgKOH/g or less, contains one or more components selected from the group consisting of: a copolymer having a styrene-derived repeating unit, a repeating unit derived from an unsaturated fatty acid having 12 or more carbon atoms, and a repeating unit derived from a polyalkylene oxide having an ethylenically unsaturated double bond; a specific salt of the copolymer and an amine derivative of the copolymer.
    Type: Grant
    Filed: September 21, 2016
    Date of Patent: September 11, 2018
    Assignee: DNP FINE CHEMICALS CO., LTD.
    Inventors: Yukiko Ishima, Keishiro Yoshimori, Yukio Sugita
  • Patent number: 9944810
    Abstract: Provided is an aqueous ink jet-use ink composition which includes a binder resin, a surfactant, a pigment, a solvent and, if necessary, a pigment-dispersing resin. The binder resin has a glass transition temperature of 40-90° C. and is dispersed as resin emulsion particles. The value of A, which is defined as the sum of the product of the acid value and the content in terms of parts by mass of the binder resin and pigment-dispersing resin, is 0-200 mg KOH/g. The surfactant is a non-ionic compound represented by formula (1), and the content of solvents having boiling points of 250° C. or higher is less than 5 parts by mass relative to 100 parts by mass of the ink composition. R1O—(R2O)n—H??(1) R1 is a straight-chain or branched chain alkyl group having 12-22 carbon atoms. R2 is an ethylene group or propylene group. n is an integer between 10 and 50.
    Type: Grant
    Filed: March 11, 2016
    Date of Patent: April 17, 2018
    Assignee: DNP Fine Chemicals Co., Ltd.
    Inventors: Fumie Yamazaki, Akiko Kobayashi, Naoki Shiraishi, Kisei Matsumoto, Kentaro Otomo, Yukio Sugita
  • Publication number: 20180030298
    Abstract: Provided is an aqueous ink jet-use ink composition which includes a binder resin, a surfactant, a pigment, a solvent and, if necessary, a pigment-dispersing resin. The binder resin has a glass transition temperature of 40-90° C. and is dispersed as resin emulsion particles. The value of A, which is defined as the sum of the product of the acid value and the content in terms of parts by mass of the binder resin and pigment-dispersing resin, is 0-200 mg KOH/g. The surfactant is a non-ionic compound represented by formula (1), and the content of solvents having boiling points of 250° C. or higher is less than 5 parts by mass relative to 100 parts by mass of the ink composition. R1O—(R2O)n—H??(1) R1 is a straight-chain or branched chain alkyl group having 12-22 carbon atoms. R2 is an ethylene group or propylene group. n is an integer between 10 and 50.
    Type: Application
    Filed: March 11, 2016
    Publication date: February 1, 2018
    Applicant: DNP Fine Chemicals Co., Ltd.
    Inventors: Fumie Yamazaki, Akiko Kobayashi, Naoki Shiraishi, Kisei Matsumoto, Kentaro Otomo, Yukio Sugita
  • Patent number: 9815991
    Abstract: An ink composition for inkjet recording, including: a color material, a binder resin, and an organic solvent, wherein the binder resin contains at least an acrylic-based resin (A), and a copolymer (B) having a constitutional unit derived from a hydroxyalkyl (meth)acrylate, a constitutional unit represented by the formula (I), and a constitutional unit represented by the formula (II), a content ratio by mass of the resin (A) to copolymer (B) is 25/75 to 70/30, and wherein the solvent contains at least a polyalkylene glycol dialkyl ether and a cyclic ester, a content ratio of the cyclic ester is 3 parts by mass or more and 10 parts by mass or less relative to 100 parts by mass of the ink composition, and a content ratio of the ethylene glycol alkyl ether acetate is 5 parts by mass or less relative to 100 parts by mass of the ink composition:
    Type: Grant
    Filed: February 25, 2015
    Date of Patent: November 14, 2017
    Assignee: DNP FINE CHEMICALS CO., LTD.
    Inventors: Megumi Oogaki, Shinichi Yoshimitsu, Katsumi Watanabe, Ryohei Oka, Yukiko Ishima, Karuna Iwasawa
  • Patent number: 9745482
    Abstract: Provided is an inkjet recording ink composition, which has excellent ejection stability and enables the production of a printed material that has excellent water resistance and scratch resistance. Disclosed is an inkjet recording ink composition, which contains a wax emulsion having an average particle diameter of 140 nm or less and containing a polyolefin-based wax with a melting point of 85° C. or more and 120° C. or less, a resin emulsion, a pigment, and an aqueous solvent.
    Type: Grant
    Filed: September 1, 2014
    Date of Patent: August 29, 2017
    Assignee: DNP FINE CHEMICALS CO., LTD.
    Inventors: Yukio Sugita, Fumie Yamazaki
  • Publication number: 20160376452
    Abstract: Provided is an inkjet recording ink composition which has excellent water resistance and solvent resistance and also has excellent ejection stability. Disclosed is an inkjet recording ink composition which contains a resin having an acid value of less than 10 mg KOH/g, an amino alcohol having a boiling point of 100° C. or more and 300° C. or less, a pigment, and a solvent, in which the resin is in an emulsion state.
    Type: Application
    Filed: September 2, 2014
    Publication date: December 29, 2016
    Applicant: DNP FINE CHEMICALS CO., LTD.
    Inventors: Yukio SUGITA, Fumie YAMAZAKI, Masaki INUMARU, Kisei MATSUMOTO, Naoki SHIRAISHI
  • Patent number: 9487665
    Abstract: An object of the present invention is to provide: a pigment dispersion liquid for inkjet ink, which is stable for a long period of storage and which increases repellency to ink ejection surface. Disclosed is a pigment dispersion liquid for inkjet ink, comprising: a pigment; a pigment dispersing agent; and a compound having an ethylenically unsaturated double bond, wherein the pigment dispersing agent has an amine value of 20 mgKOH/g or less and an acid value of 10 mgKOH/g or less, contains one or more components selected from the group consisting of: a copolymer having a styrene-derived repeating unit, a repeating unit derived from an unsaturated fatty acid having 12 or more carbon atoms, and a repeating unit derived from a polyalkylene oxide having an ethylenically unsaturated double bond; a specific salt of the copolymer and an amine derivative of the copolymer.
    Type: Grant
    Filed: February 5, 2013
    Date of Patent: November 8, 2016
    Assignee: DNP FINE CHEMICALS CO., LTD.
    Inventors: Yukiko Ishima, Keishiro Yoshimori, Yukio Sugita
  • Patent number: 9430071
    Abstract: The present invention has a main purpose of providing a resin composition capable of forming a resin film excellent in hardness and heat resistance. To achieve the purpose described above, the present invention provides a resin composition, comprising: a developable polysiloxane containing a developable group and substantially no radically polymerizable group; a polymerizable polysiloxane containing a radically polymerizable group and substantially no developable group; and a polyfunctional monomer.
    Type: Grant
    Filed: March 28, 2013
    Date of Patent: August 30, 2016
    Assignee: DNP FINE CHEMICALS CO., LTD.
    Inventors: Shintaro Nasu, Satoshi Shioda, Hiroshi Takeichi
  • Patent number: 9376571
    Abstract: The present invention is to provide a colorant dispersion liquid which is able to form a high-luminance coating film having better heat resistance compared to the case of using conventional dyes. Disclosed is a colorant dispersion liquid containing (A) a colorant, (B) a dispersant, and (C) a solvent, wherein the colorant (A) contains a color material represented by the following general formula (I) and a xanthene-based dye; a solubility of the color material in the solvent (C) and that of the xanthene-based dye in the solvent (C) are each 0.2 (g/100 g solvent) or less at 23° C.; and the color material and the xanthene-based dye are dispersed in the solvent (C) by the dispersant (B): (The symbols in the formula are as described in the Description.
    Type: Grant
    Filed: February 4, 2014
    Date of Patent: June 28, 2016
    Assignees: DAI NIPPON PRINTING CO., LTD., DNP FINE CHEMICALS CO., LTD.
    Inventors: Masato Okada, Daisuke Endo, Michihiro Ogura, Hiroaki Segawa, Tomoki Murata, Yoshihito Maeno, Hiroshi Oshima
  • Patent number: 9309399
    Abstract: The present invention is to provide a pigment dispersion liquid which has excellent pigment dispersion stability and high productivity even in the case of using a fine pigment and having high pigment concentration; a method for producing the pigment dispersion liquid; a color resin composition which has excellent pigment dispersion stability, causes no clogging problem, has excellent adhesion, and is able to form color layers with high pigment concentration, with accuracy; and a color filter comprising the resin composition. Disclosed is a method for producing a pigment dispersion liquid, comprising the step of dispersing a pigment by mixing at least a pigment (A), a polymer (B) having tertiary or lower amines, an amine-reactive low molecular compound (C), and a dispersion medium (D), and dispersing the pigment (A) while reacting the polymer (B) with the low molecular compound (C), and a pigment dispersion liquid produced by the production method.
    Type: Grant
    Filed: October 19, 2010
    Date of Patent: April 12, 2016
    Assignee: DNP FINE CHEMICALS CO., LTD.
    Inventors: Masayo Konno, Yukie Kawazu, Yumi Saiki, Shoichi Komatsu, Syuichi Mitsuhashi, Shunsuke Shinozaki
  • Patent number: 8841356
    Abstract: Disclosed is an ink composition which has superior storage stability, is resistant to bleeding, has good fixability to paper, and enables printing of a clear image. The ink composition includes a pigment dispersion containing a surface-treated pigment and a resin emulsion, wherein the surface-treated pigment is obtained by binding a functional group, having a larger calcium index than a calcium index of 1,2,3-benzenetricarboxylic acid, to the surface of a pigment; and the resin emulsion is adapted so that an aqueous solution containing 1 mass % of a solid content of the resin emulsion has a conductance of 300 ?S/cm or less.
    Type: Grant
    Filed: September 30, 2010
    Date of Patent: September 23, 2014
    Assignee: DNP Fine Chemicals Co., Ltd.
    Inventors: Satoshi Shioda, Tatsuro Ishitobi, Takao Otomaru, Rumiko Matsuo, Masaki Inumaru, Yukio Sugita, Fumie Yamazaki, Naoki Shiraishi, Mitsuyoshi Tamura, Ataru Miyata
  • Patent number: 8814335
    Abstract: An inkjet recording method characterized by adhering a receiving solution (A) to at least areas on a recording medium (R) which are to be printed with an inkjet ink (I) or the whole surface of the medium (R) which is to be printed, said receiving solution (A) being a solution obtained by dissolving (inclusive of dispersing) one or more metal salts (S) selected from among at least divalent, calcium salts, magnesium salts, nickel salts, aluminum salts, boron salts, and zinc salts and one or more resins (B) having hydrophilic groups in an aqueous solvent in such amounts that the concentrations of the metal salts (S) and the resins (B) fall within the range of 0.005 to 2.0 mol/l and within the range of 0.5 to 20 mass % respectively, and then applying the inkjet ink (1) to areas where the metal salts are present in an adhered state to carry out printing.
    Type: Grant
    Filed: March 27, 2012
    Date of Patent: August 26, 2014
    Assignee: DNP Fine Chemicals Co., Ltd.
    Inventors: Masaki Inumaru, Takao Otomaru, Yukio Sugita, Mitsuyoshi Tamura, Fumie Yamazaki, Naoki Shiraishi, Yoshiki Nozaka
  • Publication number: 20140132661
    Abstract: Provided is an inkjet recording method which minimizes blur and achieves excellent fixing to a recoding medium. This inkjet recording method is characterized by adhering a receiving solution (A) to at least areas on a recording medium (R) which are to be printed with an inkjet ink (I) or the whole surface of the medium (R) which is to be printed, said receiving solution (A) being a solution obtained by dissolving (inclusive of dispersing) one or more metal salts (S) selected from among at least divalent, calcium salts, magnesium salts, nickel salts, aluminum salts, boron salts, and zinc salts and one or more resins (B) having hydrophilic groups in an aqueous solvent in such amounts that the concentrations of the metal salts (S) and the resins (B) fall within the range of 0.005 to 2.0 mol/l and within the range of 0.5 to 20 mass % respectively, and then applying the inkjet ink (I) to areas where the metal salts are present in an adhered state to carry out printing.
    Type: Application
    Filed: March 27, 2012
    Publication date: May 15, 2014
    Applicants: DNP FINE CHEMICALS CO., LTD., DAI NIPPON PRINTING CO., LTD.
    Inventors: Yoshiki NOZAKA, Fumie YAMAZAKI, Mitsuyoshi TAMURA, Yukio SUGITA, Takao OTOMARU, Masaki INUMARU, Naoki SHIRAISHI
  • Publication number: 20140065367
    Abstract: There is provided a structure having convex parts with an average height of 100 nm or more and 1000 nm or less, or concave parts with an average depth of 100 nm or more and 1000 nm or less on a surface thereof. The convex parts or the concave parts thereof are present at an average cycle of 50 nm or more and 400 nm or less in at least one direction. The structure is obtained by polymerizing a polymerizable composition containing a (meth)acrylate compound by light irradiation, electron beam irradiation and/or heating, the (meth)acrylate compound contains 53% by mass or more polyethylene glycol di(meth)acrylate based on the whole (meth)acrylate compound. The structure has a storage elastic modulus at 25° C. of 2 GPa or less and/or a storage elastic modulus at 180° C. of less than 0.5 GPa.
    Type: Application
    Filed: May 17, 2012
    Publication date: March 6, 2014
    Applicant: DNP FINE CHEMICALS CO., LTD.
    Inventors: Tsukasa Matsumoto, Yoshihiro Maeda, Kazuya Sato
  • Publication number: 20140055520
    Abstract: An inkjet recording method which suppresses feathering and color bleeding and is excellent in fixability to a recording medium. The inkjet recording method includes the steps of applying an ink-receiving solution prepared by dissolving in an aqueous solvent at least one metal salt having a water solubility of 0.1 mol/l or more, selected from calcium salts, magnesium salts, nickel salts and zinc salts having a valence of 2 or more, to at least the surface to be printed by using an inkjet ink or the entire surface of a recording medium; and printing on the metal salt adhered part by using the inkjet ink comprising at least a pigment, a resin emulsion and an aqueous solvent containing a surfactant. Further, a phosphorus-containing group having at least one P—O or P?O bond is bound to the surface of the pigment.
    Type: Application
    Filed: December 26, 2011
    Publication date: February 27, 2014
    Applicants: DNP FINE CHEMICALS CO., LTD., DAI NIPPON PRINTING CO., LTD.
    Inventors: Masaki Inumaru, Satoshi Shioda, Takao Otomaru, Yukio Sugita, Mitsuyoshi Tamura, Fumie Yamazaki, Naoki Shiraishi
  • Publication number: 20130216945
    Abstract: An object of the present invention is to provide a pigment dispersion liquid which has excellent pigment dispersion stability and high productivity even in the case of using a fine pigment and having high pigment concentration; a method for producing the pigment dispersion liquid; a color resin composition which has excellent pigment dispersion stability, causes no clogging problem, has excellent adhesion, and is able to form color layers with high pigment concentration, with accuracy; and a color filter comprising the resin composition. Disclosed is a method for producing a pigment dispersion liquid, comprising the step of dispersing a pigment by mixing at least a pigment (A), a polymer (B) having tertiary or lower amines, an amine-reactive low molecular compound (C), and a dispersion medium (D), and dispersing the pigment (A) while reacting the polymer (B) with the low molecular compound (C), and a pigment dispersion liquid produced by the production method.
    Type: Application
    Filed: October 19, 2010
    Publication date: August 22, 2013
    Applicant: DNP FINE CHEMICALS CO., LTD.
    Inventors: Masayo Konno, Yukie Kawazu, Yumi Saiki, Shoichi Komatsu, Syuichi Mitsuhashi, Shunsuke Shinozaki
  • Publication number: 20120077896
    Abstract: The object to be achieved by the present invention is to provide an active energy ray curable-type inkjet recording ink composition that is used for recording on a glass surface and is excellent in adhesiveness to the glass surface and water resistance and alcohol resistance. The active energy ray curable-type inkjet recording ink composition of the present invention at least contains: (b) photopolymerization initiator; 40 to 75 percent by mass of (d) cyclic monofunctional (meth)acrylate; 5 to 20 percent by mass of (e) hydroxyl group-containing (meth)acrylate; and 3 to 10 percent by mass of (c) epoxy group-containing silane coupling agent. The active energy ray curable-type inkjet recording ink composition is used for recording on a glass surface.
    Type: Application
    Filed: June 2, 2010
    Publication date: March 29, 2012
    Applicant: DNP FINE CHEMICALS CO LTD
    Inventor: Yukiko Ishima