Trisazo dyes having a 2,7-(1-amino-3,6-or 4,6-disulfo-8-hydroxynaphthylene) radical

Abstract

Disclosed are compounds of the formula, ##STR1## in which X is hydrogen, chlorine, C.sub.1-4 alkyl or alkoxy, --SO.sub.3 M or --CO.sub.2 M, one of the Y's is hydrogen, the other --SO.sub.3 M, A is a mono- or di-sulphonaphthyl radical which is optionally further substituted, or ##STR2## in which R is hydrogen, hydroxy or C.sub.1-4 alkyl or alkoxy, B is a radical or a coupling component (b.sub.1) to (b.sub.10), ##STR3## WHERE R.sub.1 is --NH.sub.2, anilino or toluidino, R.sub.2 is --NH.sub.2 or --OH, and Either R.sub.3 is hydrogen, or When R.sub.1 and R.sub.2 both are --NH.sub.2, R.sub.3 is hydrogen, --SO.sub.3 M or C.sub.1-4 alkyl; ##STR4## WHERE R.sub.4 is hydrogen or C.sub.1-4 alkyl; ##STR5## WHERE R.sub.5 is hydrogen or --CO.sub.2 M; ##STR6## WHERE ONE OF THE Y.sub.1 's is hydrogen, the other --SO.sub.3 M; ##STR7## WHERE R.sub.6 is phenyl or C.sub.1-4 alkylphenyl; ##STR8## where R.sub.7 is --OH or --NH.sub.2, R.sub.8 is hydrogen, phenyl or sulphophenyl, and R.sub.9 is C.sub.1-4 alkyl or --CO.sub.2 M, and the M's independently, signify hydrogen or a non-chromophoric cation, their production and use for dyeing and printing anionic dyeable substrates, e.g., natural and regenerated cellulose, natural and synthetic polyamides, polyurethanes and basically modified polypropylene and particularly leather, paper and anodized aluminum. The obtained dyeings have shades ranging from deep green or blue to black. The dyeings on paper exhibit notable fastness to water and water-spotting while the dyeings on leather are level and exhibit good fastness to perspiration, dry cleaning, water, water-spotting and buffing and resistance to migration onto polyvinyl chloride.

Dependencies are inferred from the claim text.