Mixtures of a 1:1 copper or nickel complex of a stilbene-azo or stilbene-azoxy compound having two 4,4'-(2,2'-disulfostilbenylene) radicals and a 1:1 copper or nickel complex of a stilbene-azo or stilbene-azoxy compound having one such radical

US4954133A · kind A · utility

Assignee

• Sandoz AG · CH

Inventor

• Max Oppliger · Allschwil, CH

Key dates

• Filing date: Feb 12, 1986
• Grant date: Sep 4, 1990
• Expiry date: Feb 12, 2006

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S534/01
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Compounds of the formula ##STR1## wherein each A, independently, is a ##STR2## wherein R.sub.1 is hydrogen, halo, C.sub.1-4 alkyl or C.sub.1-4 alkoxy, PA0 R.sub.2 is hydrogen, halo, C.sub.1-4 alkyl, C.sub.1-4 alkoxy, --NHCONH.sub.2 or --NHCOC.sub.1-4 alkyl, PA0 R.sub.3 is hydrogen or methoxy, and PA0 m is 0, 1 or 2, PA0 each B, independently, is a radical of a diazo or coupling component, and a and each b, independently, are 0 or 1, and metal complexes thereof, which compounds or complexes are in free acid or salt form, and mixtures thereof with a compound of the formula ##STR3## or a metal complex thereof, wherein A and b are as defined above and D is a radical of a diazo or coupling component of the benzene or 1-naphthalene series are useful for dyeing and printing hydroxy group- or nitrogen-containing organic substrates, especially cellulose fibre-containing textiles (e.g., cotton), paper and leather. The fastness properties of the obtained dyeings and prints may be further improved by after-treating the dyed or printed substrate with a special fixing agent.