Asymmetric sulfo group-containing disazo compounds containing two 6-halo-1,3,5-triazinyl groups

US5395925A · kind A · utility

Assignee

• Sandoz AG · CH

Inventors

• Werner Koch · Deggingen, DE
• Kurt Brenneisen · Grenzach, DE

Key dates

• Filing date: Mar 12, 1993
• Grant date: Mar 7, 1995
• Expiry date: Mar 12, 2013

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09B62/043
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Compounds of the formula ##STR1## wherein D is the residue of a metal-free azo dye free of fiber-reactive groups and containing 2 to 4 sulfo groups, PA1 D' is the residue of a metal-free azo dye free of fiber-reactive groups and containing 2 to 4 sulfo groups, with the proviso that D and D' are different, PA1 each R.sub.1 is independently hydrogen or C.sub.1-4 alkyl, PA1 each of R.sub.2 and R.sub.3 is independently hydrogen, C.sub.1-4 -alkyl or 2-, 3- or 4-hydroxy(C.sub.2-4 alkyl), PA1 X is linear or branched C.sub.2-10 alkylene or linear or branched C.sub.3-10 alkylene monosubstituted or disubstituted by hydroxy which optionally contains one or two radicals selected from --O-- and --NRa--, wherein Ra is hydrogen or C.sub.1-4 alkyl, and each Hal is fluoro, chloro or bromo, which compounds are in free acid or salt form, and mixtures thereof, which compounds and mixtures are useful as fiber-reactive dyes for dyeing and printing hydroxy group- and/or nitrogen-containing organic substrates, for example, leather and textiles containing or consisting of natural or synthetic polyamides such as wool, silk and nylon and natural or regenerated cellulose such as cotton, viscose and spun rayon…