PROCESS FOR PRODUCING AZO COMPOUNDS, PIGMENT DISPERSION, COLORING COMPOSITION, INK FOR INKJET RECORDING, COLORING COMPOSITION FOR COLOR FILTER, AND COLOR FILTER

摘要

To provide a process for producing an azo pigment showing excellent coloring characteristics such as tinctorial strength and hue and showing excellent fastness such as light fastness and ozone fastness, an azo pigment dispersion, a coloring composition, and an ink for inkjet recording. process for producing, for example, an azo pigment represented by the general formula (9), which includes a step of preparing a solution containing a compound represented by the following general formula (7) and an acid, and a step of bringing the solution in contact with a diazonium salt (8) derived from a heterocyclic amine,