Dissymmetrical diazo compounds containing having at least one 2-imidazolium unit and a cationic or non-cationic linker, compositions comprising them, method of coloring, and device

摘要

The present disclosure relates to dissymmetrical cationic diazo compounds having at least one 2-imidazolium unit and a cationic or non-cationic linker. The disclosure further relates to dyeing compositions comprising such compounds as a direct dye in a medium appropriate for the dyeing of keratin fibers, and also to a method of coloring keratin fibers that employs this composition, and to a device having a plurality of compartments.