Disazo compounds having a further unsubstituted or substituted sulfophenyl diazo component radical and a 4-alkoxy- or arylsulfonyloxy benzene coupling component radical having an acylamina substituent

US4466920A · kind A · utility

Assignee

• Sandoz AG · CH

Inventor

• Hanspeter Uehlinger · Basel, CH

Key dates

• Filing date: Sep 13, 1979
• Grant date: Aug 21, 1984
• Expiry date: Sep 13, 1999

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09B31/08
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Disazo compounds of the formula ##STR1## in which A is a diazo component radical, PA0 B is a coupling/diazo component radical of the 1,4-phenylene, 1,4-naphthylene or 5,6,7,8-tetrahydro-1,4-naphthylene series, PA0 R.sub.3 is hydrogen (C.sub.1-4)alkyl or ##STR2## wherein ring Z is unsubstituted or monosubstituted by halo, (C.sub.1-4)alkyl or (C.sub.1-4)alkoxy, and PA0 R.sub.4 is (C.sub.1-6)alkyl, (C.sub.1-6)alkoxy, amino mono(C.sub.1-6)alkylamino or di(C.sub.1-6) alkylamino, with the proviso that the compound contains a single sulpho group on the diazo component radical A and no other water-solubilizing group, which compound is in free acid or salt form, and mixtures of such compounds which are useful as anionic dyestuffs for dyeing and printing substrates such as natural and synthetic polyamides (e.g., wool, silk and nylon), leather, polyurethanes and polyolefins modified to contain basic groups. The dyes may be used as such or in the form of liquid (e.g., concentrated aqueous) or solid preparations.