Title:
AQUEOUS PIGMENT DISPERSION AND INKJET RECORDING INK
Document Type and Number:
Japanese Patent JP2016204514
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a method for producing an aqueous pigment dispersion using a quinacridone pigment for providing an inkjet recording aqueous ink which can be applied to a printer carrying a high resolution inkjet head, has reduced coarse particles and is excellent in discharge stability.SOLUTION: There are provided: a method for producing an aqueous pigment dispersion obtained by dispersing a polymer (A) having a number average molecular weight of 1000-6000 which has an anionic group, has a solubility in water of 0.1 g/100 ml or less and forms fine particles in water when the neutralization rate of the anionic group by a basic compound is set at 100%, a water-soluble organic solvent, a red azo pigment and a basic compound in water, wherein the amount of water at the initial stage of dispersion is less than 15 mass% with respect to the red azo pigment; and an inkjet recording ink using the aqueous pigment dispersion obtained by the production method.SELECTED DRAWING: None
More Like This:
Inventors:
KIMURA TOSHIHISA
UEMURA YUKIE
TANAKA HISAKAZU
OCHI YASUO
OE NOBUHIRO
UEMURA YUKIE
TANAKA HISAKAZU
OCHI YASUO
OE NOBUHIRO
Application Number:
JP2015087561A
Publication Date:
December 08, 2016
Filing Date:
April 22, 2015
Export Citation:
Assignee:
DAINIPPON INK & CHEMICALS
International Classes:
C09D17/00; B41J2/01; B41M5/00; C09B67/20; C09D11/326
Domestic Patent References:
| JP2012036251A | 2012-02-23 | |||
| JP2007254735A | 2007-10-04 | |||
| JPH06157954A | 1994-06-07 |
Foreign References:
| WO2010013651A1 | 2010-02-04 |
Attorney, Agent or Firm:
Kono Tsuyo
Takayuki Ohno
Takayuki Ohno
Previous Patent: An adhesive composition and a layered product
Next Patent: A water pigment dispersing element and a water-based ink for ink-jet record
Next Patent: A water pigment dispersing element and a water-based ink for ink-jet record