abstract |
Dyes of the general formula I in which R is alkyl with 1 to 7 carbon atoms and R¹ and R² independently of one another alkyl with 1 to 8 carbon atoms or alkenyl with 3 or 4 carbon atoms and R² is also hydrogen, for coloring organic solvents, mineral oil products , Waxes, plastics and surface coverings are used. |