2,5-Dihalo-4-dialkylsulfamoyl 4{40 -(N-cyanoalkyl-N-alkyl-amino)-1,1{40 -azobenzene disperse dyes

摘要

Dyes of the formula <IMAGE> wherein each of R1, R2 and R6 is independently alkyl of 1 to 4 carbon atoms, EACH OF R3 and R4 is independently chloro or bromo, and EACH OF R5 and R7 is independently hydrogen or methyl, give dyeings of excellent fastness on textiles of hydrophobic synthetic and regenerated fibers made from high molecular organic materials.