2,5-Dihalo-4-dialkylsulfamoyl 4'-(N-cyanoalkyl-N-alkyl-amino)-1,1'-azobenzene disperse dyes

Abstract

Dyes of the formula ##STR1## wherein each of R.sub.1, R.sub.2 and R.sub.6 is independently alkyl of 1 to 4 carbon atoms, Each of R.sub.3 and R.sub.4 is independently chloro or bromo, and Each of R.sub.5 and R.sub.7 is independently hydrogen or methyl, give dyeings of excellent fastness on textiles of hydrophobic synthetic and regenerated fibers made from high molecular organic materials.

Dependencies are inferred from the claim text.