Process for transfer of azo dyes

Abstract

Abstract Process for transfer of azo dyestuffs from a support to a plastic-coated paper by diffusion with the aid of an energy source, in which a support is used on which are present one or more azo dyestuffs of the formula <IMAGE> in which   X denotes nitrogen or the radical C-CN   Z denotes oxygen or the radical -CH(R<7>)-, in which R<7> represents hydrogen or C1-C4-alkyl,   R<1> represents hydrogen, substituted or unsubstituted alkyl or substituted or unsubstituted phenyl,   R<2> and R<3> each denote hydrogen or C1-C4-alkyl,   R<4> denotes hydrogen, C1-C10-alkyl, C1-C10-alkoxy or acylamino,   R<5> denotes hydrogen, chlorine, C1-C4-alkyl, C1-C4-alkoxy, C1-C4-alkylthio or substituted or unsubstituted phenyl and   R<6> denotes cyano or the radical -CO-OR<1>, -CO-NHR<1> or -CO-N(R<1>)2, in which R<1> has the abovementioned meaning.

Inventors

• 👤 Karl-Heinz Dr. Etzbach
• 👤 Ruediger Dr. Sens
• 👤 Matthias Dr. Wiesenfeldt

Bibliographic Details