| abstract |
R 1 , R 2 und R 3 unabhängig voneinander Wasserstoff, gegebenenfalls substituiertes Alkyl, gegebenenfalls substituiertes Phenyl oder gegebenenfalls substituiertes Cyclohexyl und R 4 Alkyl bedeuten. Process for transferring azo dyes from a support to a plastic-coated paper by diffusion using a thermal head, using a support on which one or more azo dyes of the formula are in which D represents the rest of a diazo component and R 1 , R 2 and R 3 independently of one another are hydrogen, optionally substituted alkyl, optionally substituted phenyl or optionally substituted cyclohexyl and R 4 is alkyl. |