NOVEL DISAZO COMPOUND* METHOD OF MAKING SAME AND USING SAME AS DYEING AND COLORING AGENT

摘要

Symmetrical and asymmetrical disazo compounds of the formula wherein K is the radical of an enolized or enolizable coupling component, Z is hydrogen, halogen, lower alkyl, lower alkoxy or nitro and N IS 1 TO 10 AND WHEREIN AN ASYMMETRY CAN BE CAUSED BY A DIFFERENT POSITION OF THE SUBSTITUENTS ON THE BENZENE RINGS A and B and/or by different substituents Z and/or different coupling component radicals K, and mixtures of such compounds are colorants, especially pigments, of a high tinctorial strength and purity of shade, good rheological properties in lacquers and printing inks, high luster of colorations, good fastness to light, solvents, alkali, acids and migration, combined with a good covering power. Especially the combination of good covering power and high tinctorial strength is advantageous for lacquers and printing inks.