Title:
AQUEOUS PIGMENT DISPERSION, PROCESS FOR PRODUCING SAME, COLORING COMPOSITION, INK COMPOSITION, INK COMPOSITION FOR INK-JET RECORDING, AND INK-JET RECORDING METHOD
Document Type and Number:
WIPO Patent Application WO/2017/051668
Kind Code:
A1
Abstract:
The present invention provides: an aqueous pigment dispersion characterized by comprising a first dispersant, a second dispersant, water, and an azo pigment which is represented by formula (1) given in the description and which, in analysis by diffractometry with CuKα characteristic X-ray, shows characteristic X-ray diffraction peaks at least at Bragg angles (2θ±0.2º) of 4.8º, 7.2º, 9.7º, 20.0º, 17.3º, 26.0º, and 26.7º and/or a tautomer of the azo pigment and characterized by being obtained via the following step b; a process for producing the aqueous pigment dispersion; a coloring composition comprising the aqueous pigment dispersion; an ink composition; an ink composition for ink-jet recording; and an ink-jet recording method which comprises using the ink composition for ink-jet recording. Step b: a step in which an azo pigment represented by formula (1) and/or a tautomer thereof, a first dispersant, and a second dispersant are dispersed in water to obtain an aqueous pigment dispersion.
Inventors:
TATEISHI KEIICHI (JP)
SASAKI HIROKI (JP)
NAGATA YOSHIAKI (JP)
SASAKI HIROKI (JP)
NAGATA YOSHIAKI (JP)
Application Number:
PCT/JP2016/075085
Publication Date:
March 30, 2017
Filing Date:
August 26, 2016
Export Citation:
Assignee:
FUJIFILM CORP (JP)
International Classes:
C09D17/00; B41J2/01; B41M5/00; C09B67/20; C09D11/326
Domestic Patent References:
| WO2013018680A1 | 2013-02-07 | |||
| WO2013018487A1 | 2013-02-07 | |||
| WO2016047588A1 | 2016-03-31 |
Foreign References:
| JP2013173883A | 2013-09-05 | |||
| JP2014162876A | 2014-09-08 | |||
| JP2012097167A | 2012-05-24 | |||
| JP2011052105A | 2011-03-17 |
Other References:
See also references of EP 3354699A4
Attorney, Agent or Firm:
TAKAMATSU Takeshi et al. (JP)
Download PDF: