Pigment compositions

A process for preparing an azo pigment which comprises forming a dye by coupling (i) at least one diazonium component of one or more aromatic amines containing at least one sulfonic acid group or carboxylic acid group, or salts of such groups wherein the aromatic amines are selected from the group consisting of fused cyclic aromatic amines or aromatic amines of the formula:

• ##STR10## wherein each R is independently a halogen, hydrocarbyl, hydrocarbyloxy, carboxylic acid ester, sulfonic acid ester, carboxylic acid amide, imidazolone, sulfonic acid amide or nitro group;
• n is equal to 0, 1 or 2;
• each Z is independently a --COOH or --SO.sub.3 H group, or salts of such groups;
• and m is equal to 1 or 2;
• with (ii) at least one coupling component of the formula:
• ##STR11## wherein X is a hydrocarbyl, carboxylic acid ester, sulfonic acid ester, carboxylic acid amide or sulfonic acid amide group;
• each Y is independently a hydrocarbyl, halogen, hydrocarbyloxy, carboxylic acid ester, sulfonic acid ester, carboxylic acid amide, imidazolone, sulfonic acid amide or nitro group;
• and a equals 1, 2 or 3;
• and metallizing said dye with at least one divalent metal.