Title:
C.I. PIGMENT YELLOW 74 (INSOLUBLE AZO PIGMENT), AND COLORING COMPOSITION USING SAME
Document Type and Number:
WIPO Patent Application WO/2013/099730
Kind Code:
A1
Abstract:
Provided is a C.I. Pigment Yellow 74 which is an insoluble azo pigment and is characterized in that: the ratio (26.6°/11.7°) of a 26.6° peak diffraction intensity to an 11.7° peak diffraction intensity, in a Bragg angle (2θ±0.2°) measured by x-ray powder diffraction using a CuK α-ray, is 0.85-1.12; and the average primary particle diameter of crystalline particles thereof is 20-130nm. As a result, it is possible to provide a coloring composition that exhibits excellent dispersibility when used as a coloring agent, and favorable particle-diameter stability and storage stability, in comparison to conventional pigments. Furthermore, by using the coloring composition, it is also possible to achieve image formation (recording) that exhibits excellent clarity and transparency at a high level not attainable using the prior art.
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Inventors:
HOSHINO RYO (JP)
NAGASATO SHIGEYUKI (JP)
TAKAYAMA MASAHIRO (JP)
INOUE SHIGERU (JP)
MATSUZAKI SATORU (JP)
NAGASATO SHIGEYUKI (JP)
TAKAYAMA MASAHIRO (JP)
INOUE SHIGERU (JP)
MATSUZAKI SATORU (JP)
Application Number:
PCT/JP2012/082899
Publication Date:
July 04, 2013
Filing Date:
December 19, 2012
Export Citation:
Assignee:
DAINICHISEIKA COLOR CHEM (JP)
International Classes:
C09B29/33; B41J2/01; B41M5/00; C09B67/04; C09B67/20; C09B67/48; C09D11/00
Foreign References:
| JP2002138233A | 2002-05-14 | |||
| JP2003012968A | 2003-01-15 | |||
| JP2004026930A | 2004-01-29 | |||
| JP2003012960A | 2003-01-15 | |||
| JP4190218B2 | 2008-12-03 | |||
| JPS6036224B2 | 1985-08-19 | |||
| JP3055673B2 | 2000-06-26 |
Other References:
See also references of EP 2799499A4
Attorney, Agent or Firm:
KONDO Rieko et al. (JP)
Kondo Toshihide child (JP)
Kondo Toshihide child (JP)
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Claims: