AZO COMPOUND AND PIGMENT DISPERSANT, PIGMENT COMPOSITION, PIGMENT DISPERSION AND TONER, INCLUDING AZO COMPOUND Russian patent published in 2015 - IPC C09B43/12 C09B67/20 C09B67/46 C09B67/48 C07C245/08 G03G9/08 C09D17/00 

FIELD: chemistry.

SUBSTANCE: invention relates to obtaining an azo compound for the improvement of azo pigment dispersing ability in a water-insoluble solvent, dispersant, pigment composition, pigment dispersion and toner. The azo compound of the general formula (1), where R₁ represents an alkyl group, which has 1-6 carbon atoms, or a phenyl group; R₂-R₆ stand for a hydrogen atom or a polymer, and at least one of R₂-R₆ represents a polymer; R₇-R₁₁, each, stands for a hydrogen atom, COOR₁₂ group or CONR₁₃R₁₄ group, and at least one of R₇-R₁₁ stands for a COOR₁₂ group or CONR₁₃R₁₄ group; and R₁₂-R₁₄, each, stands for a hydrogen atom or an alkyl group, which has 1-3 carbon atoms. The pigment composition includes a pigment dispersant, which contains the azo compound and the azo pigment. The toner includes binding resin, wax and the pigment composition.

EFFECT: invention makes it possible to obtain the pigment dispersant with high affinity to pigments, as well as the toner with the high degree of chromaticity and good colour tone.

15 cl, 3 dwg, 5 tbl