| abstract |
The present invention relates to water-soluble acid dyes of the general formula (I) DOLLAR F1 wherein DOLLAR AR · 1 · for the residues AX-COOM, AX-SO¶3¶M, OR · 4 · or NR · 5 · R · 6 ·, DOLLAR AA for NR · 7 · or S, DOLLAR AX for optionally substituted by hydroxy, carboxy or amino (C¶1¶-C¶16¶) alkylene or arylene; DOLLAR A R · 4 ·, R · 5 · and R · 6 · independently of one another for hydrogen, (C¶1¶-C¶4¶) alkyl or for substituted (C¶1¶-C¶4¶) alkyl; DOLLAR A R · 7 · for hydrogen, methyl or ethyl; DOLLAR A M stands for a cation and DOLLAR A n for the number 0 or 1 DOLLAR A. The acid dyes are suitable for printing natural and synthetic fiber materials for recording liquids, in particular for the ink jet or ink jet process and for pulp dyeing. |