Substituted 2,4-di[4'-(disulfonaphth-2"-ylazo)phenylamino]-6-amino-1,3,5-triazines

Abstract

Compounds of the formula ##STR1## and salts thereof, wherein R.sub.1 is hydrogen or methyl, R.sub.2 is hydrogen, methyl or acetamido, R.sub.3 is hydrogen, methyl or methoxy, R.sub.4 is hydrogen, C.sub.1-4 alkyl or hydroxy(C.sub.2-4 alkyl), R.sub.5 is hydroxy(C.sub.2-4 alkyl) or hydroxy(C.sub.2-4 alkoxy)C.sub.2-4 alkyl, or --NR.sub.4 R.sub.5 is a 5- or 6-membered ring containing 1 to 3 hetero atoms which ring is unsubstituted or substituted by 1 to 3 substituents selected from C.sub.1-4 alkyl and C.sub.2-4 alkyl monosubstituted by hydroxy or amino, and the two naphthyl-2 groups are identically substituted, with the proviso that when R.sub.3 is methoxy, R.sub.1 and R.sub.2 are different, solid and aqueous liquid dye compositions and printing inks comprising such compounds and salts and the use of such compounds and salts for dyeing and printing substrates, especially hydroxy group- and nitrogen-containing organic substrates.

Dependencies are inferred from the claim text.