Chromium complex dye, including azo and azo methine dye compounds

US4033942A · kind A · utility

Assignee

• Ciba-Geigy · US

Inventors

• Fabio Beffa · Riehen, CH
• Gerhard Back · Lörrach, DE
• Eginhard Steiner · Füllinsdorf, CH

Key dates

• Filing date: Apr 27, 1976
• Grant date: Jul 5, 1977
• Expiry date: Apr 27, 1996

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D06P1/13
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

1:2 Chromium complex dyes of an azo compound of the formula ##STR1## and an azomethine compound of the formula ##STR2## COMPLEXED TO A CHROMIUM ATOM, WHEREIN A is an ortho-phenylene or -- naphthylene diazo component radical; B is an ortho-phenylene or -- naphthylene coupling component radical; X is --O-- or --CO--O--; X' is --O--, --NH--, --N(lower alkyl)--, --N(aralkyl)-- or --N(aryl)--; R is an aliphatic radical; the benzene ring "a" is unsubstituted or substituted by a fused benzene ring, halo, nitro alkyl or alkoxy; the molecule containing 0-5 water solubilizing groups and optionally a group of the formula --N=N--Ar--N=N--Ar' and/or -N=N--Ar" wherein Ar, Ar' and Ar" represent an aromatic or carbocyclic radical.