Title:
AQUEOUS PIGMENT DISPERSION AND PRODUCTION METHOD FOR AQUEOUS PIGMENT DISPERSION
Document Type and Number:
WIPO Patent Application WO/2018/088222
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing an aqueous pigment dispersion which can maintain superior dispersibility and long-term storage stability, and can be used for producing printed matter having superior color development when printed on plain paper. The present invention pertains to an aqueous pigment dispersion which contains a pigment including C.I. pigment red 150, a water-soluble organic solvent, and a radical polymer having an aromatic cyclic structure or a heterocyclic structure and an acid value of 50-120 mgKOH/g, and which is characterized in that all or a portion of acid radicals included in the radical polymer are neutralized by a basic compound, and the mass ratio of the radical polymer to the pigment is within the range of 0.001-0.1.
Inventors:
UEDA YUTARO (JP)
HIBINO RYOTA (JP)
GANBAYASHI HIDEKI (JP)
OKADA SHINICHI (JP)
HIBINO RYOTA (JP)
GANBAYASHI HIDEKI (JP)
OKADA SHINICHI (JP)
Application Number:
PCT/JP2017/038676
Publication Date:
May 17, 2018
Filing Date:
October 26, 2017
Export Citation:
Assignee:
DAINIPPON INK & CHEMICALS (JP)
International Classes:
C09D11/326; B41J2/01; B41M5/00; C09D17/00
Domestic Patent References:
| WO2008015998A1 | 2008-02-07 | |||
| WO2014156569A1 | 2014-10-02 |
Foreign References:
| JP2014214277A | 2014-11-17 | |||
| JP2007098783A | 2007-04-19 | |||
| JPH10298296A | 1998-11-10 |
Attorney, Agent or Firm:
KONO Michihiro (JP)
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