US 4,218,367 AGranted

Reactive complex chromium-bearing azo dyestuffs

AssigneeProduits Chimiques Ugine Kuhlmann

InventorsClaude M. H. E. Brouard, Claude L. E. Moerel

Life of this patent

Estimating the term…

Loading patent…

Abstract

Complex chromium-bearing dyestuffs of formula: ##STR1## where A represents a diazotizable amine residue, B represents the residue of a coupling agent, Y.sub.1 represents a --O-- or ##STR2## residue, Y.sub.2 represents a --O-- or ##STR3## residue, E represents the residue of a monoanionic bifunctional chelating agent, Y.sub.1 and Y.sub.2 are respectively in the ortho position with respect to the --N.dbd.N-- group, G represents a neutral monofunctional ligand, and Z represents a reactive group attached to A or B directly or via a bridging group such as ##STR4## --SO.sub.2 NH-- or --CO--NH--, R denoting hydrogen or an alkyl radical having 1 to 2 carbon atoms; their process of preparation, and their application for dyeing of a variety of natural or synthetic fibers and fabrics including regenerated cellulose, wool, silk, synthetic polyamides. They may also be used for the dyeing of leather.

Claims10

Dependent claims

A complex chromium bearing dyestuff of the formula:

##STR177## wherein A represents a phenylene or naphthylene nucleus;
B represents a coupling component selected from the group consisting of acetoacetarylide, aniline, phenol, 5-pyrazolone, naphthylamine and naphthol,
A and B being unsubstituted or substituted by one or more of sulfo, halogen, nitro, alkyl having 1-4 carbon atoms, alkoxy having 1-4 carbon atoms, acetylamino, unsubstituted phenylamino, phenylamino substituted by sulfo, unsubstituted phenylazo or naphthylazo, phenylazo or naphthylazo substituted by one or more of nitro, halogen, carboxy, sulfo or alkoxy having 1-4 carbon atoms, unsubstituted phenyl or phenyl substituted by one or more of sulfo or halogen, at least one --SO.sub.3 H group being present per atom of chromium;
Y.sub.1 represents the residue --O-- or ##STR178## Y.sub.2 represents the residue --O-- or --NH--;
Y.sub.1 and Y.sub.2 are respectively in the ortho position with respect to the --N.dbd.N-- group;
E represents the residue of a monoanionic bifunctional chelating agent;
G represents a neutral monofunctional ligand;
and
Z represents a reactive group attached to A or to B directly or via a bridging group ##STR179## --SO.sub.2 NH-- or --CONH-- wherein R is hydrogen or alkyl having 1 to 2 carbon atoms.

6 more elements

Dependencies are inferred from the claim text.