Azo pigment, process for producing azo pigment, and dispersion and coloring composition containing azo pigment
US8172910B2 · kind B2 · utility
3Cited by
1References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 28, 2009 |
| Grant date | May 8, 2012 |
| Priority date | — |
| Expiry date | Sep 28, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D17/003
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An object of the invention is to provide an azo pigment having extremely good dispersibility and dispersion stability and having excellent hue and tinctorial strength and, preferably, having a long axis observed with a transmission microscope of from 0.01 μm to 30 μm. An azo pigment which is represented by the following formula (1) and having characteristic peaks at Bragg angles (2θ±0.2°) of (i) 7.6° and 25.6°, (ii) 7.0°, 26.4°, and 27.3°, or (iii) 6.4°, 26.4°, and 27.2° in X-ray diffraction with characteristic Cu Kα line, or a tautomer thereof:
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.