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

Abstract

Abstract Disclosed are compounds of the formula, <IMAGE> in which X is hydrogen, chlorine, C1-4alkyl or alkoxy, -SO3M or -CO2M, one of the Y's is hydrogen, the other -SO3M, A is a mono- or di-sulphonaphthyl radical which is optionally further substituted, or <IMAGE> in which R is hydrogen, hydroxy or C1-4alkyl or alkoxy, B is a radical or a coupling component (b1) to (b10), <IMAGE> (b1) WHERE R1 is -NH2, anilino or toluidino, R2 is -NH2 or -OH, and EITHER R3 is hydrogen, or WHEN R1 and R2 both are -NH2, R3 is hydrogen, -SO3M or C1-4alkyl; <IMAGE> (b2) WHERE R4 is hydrogen or C1-4alkyl; <IMAGE> (b3) WHERE R5 is hydrogen or -CO2M; <IMAGE> (b4) <IMAGE> (b5) <IMAGE> (b6) WHERE ONE OF THE Y1's is hydrogen, the other -SO3M; <IMAGE> (b7) <IMAGE> (b8) <IMAGE> (b9) WHERE R6 is phenyl or C1-4alkylphenyl; <IMAGE> (b10) where R7 is -OH or -NH2, R8 is hydrogen, phenyl or sulphophenyl, and R9 is C1-4alkyl or -CO2M, 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.

Inventors

• 👤 Heinz Wicki

Bibliographic Details