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. A 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 incontact with a diazonium salt (8) derived from a heterocyclic amine.
提供一种制备偶氮
颜料的方法,该
颜料具有优良的染色特性,如着色力和色调,并具有优良的耐光和耐
臭氧性能,以及偶氮
颜料分散体、着色组合物和用于喷墨记录的墨
水。例如,制备一种由通式(9)表示的偶氮
颜料的方法,包括以下步骤:制备含有以下通式(7)所表示的化合物和酸的溶液的步骤,以及将该溶液与来源于杂环胺的重氮盐(8)接触的步骤。