Abstract: Metal-free azo compounds of the formula ##STR1## wherein Ra is an aromatic group or an active methylene coupling component radical as defined in the specification,R.sub.t is an arylazo group or a group of the formula --Y--Z,whereinY is a direct bond or a bridging radical, andZ is a basic amino or quaternary ammonium group, ##STR2## wherein each of the variables is as defined above or below, x is a direct bond or a bridging radical,x is hydrogen, hydroxy, C.sub.1-4 alkyl, C.sub.1-4 alkoxy, amino or carboxy,ring B is further unsubstituted or further substituted,d is 0, 1 or 2, andn is 0 or 1,with the provisos that (i) the compounds contain an average of at least 1.3 basic water-solubilizing groups, and (ii) the compounds are free of sulfo groups, and 1:1 and 1:2 metal complexes thereof, which metal-free compounds and metal complexes are useful as dyes for leather and paper.

Abstract: Metal-free azo compounds of the formula ##STR1## wherein Ra is an aromatic group or an active methylene coupling component radical as defined in the specification,R.sub.t is an arylazo group or a group of the formula --Y--Z, whereinY is a direct bond or a bridging radical, andZ is a basic amino or quaternary ammonium group,R is ##STR2## wherein each of the variables is as defined above or below, X is a direct bond or a bridging radical,x is hydrogen, hydroxy, C.sub.1-4 alkyl, C.sub.1-4 alkoxy, amino or carboxy,ring B is further unsubstituted or further substituted,d is 0, 1 or 2, andn is 0 or 1,with the provisos that (i) the compounds contain an average of at least 1.3 basic water-solubilizing groups, and (ii) the compounds are free of sulfo groups, and 1:1 and 1:2 metal complexes thereof, which metal-free compounds and metal complexes are useful as dyes for leather and paper.

Abstract: Metal-free azo compounds of the formula ##STR1## wherein Ra is an aromatic group or an active methylene coupling component radical as defined in the specification,R.sub.t is an arylazo group or a group of the formula -Y-Z,whereinY is a direct bond or a bridging radical, andZ is a basic amino or quaternary ammonium group, ##STR2## wherein each of the variables is as defined above or below, X is a direct bond or a bridging radical,x is hydrogen, hydroxy C.sub.1-4 alkyl, C.sub.1-4 alkoxy, amino or carboxy,ring B is further unsubstituted or further substituted,d is 0, 1 or 2, andn is 0 or 1,with the provisos that (i) the compounds contain an average of at least 1.3 basic water-solubilizing groups, and (ii) the compounds are free of sulfo groups,and 1:1 and 1:2 metal complexes thereof,which metal-free compounds and metal complexes are useful as dyes for leather and paper.

Abstract: Disazo and polyazo compounds of the formula ##STR1## wherein each A is independently ##STR2## and each R.sub.3 is independently C.sub.1-4 alkyl, oreach A, R.sub.3 and the ##STR3## radical to which they are attached, taken together, independently, are ##STR4## wherein each R.sub.21 is independently halo, C.sub.1-4 alkyl or C.sub.1-4 alkoxy,p is 0, 1 or 2,the * denotes the carbon atom attached to the --N.dbd.N-- radical, andthe ** denotes the carbon atom attached to X,each R.sub.1 and the ##STR5## radical to which it is attached taken together, independently, are the radical of an aromatic or heterocyclic coupling component,each A.sub.1 and A.sub.2 taken together are --O--Me--O--, wherein Me is copper, cobalt, iron, nickel, manganese or zinc, oreach A.sub.1 is hydroxy, andeach A.sub.2 is independently hydrogen, hydroxy or C.sub.1-4 alkoxy,X is a direct bond or a bridging radical,each Y is independently a direct bond, C.sub.1-4 alkylene, --CO--NH--(CH.sub.2).sub.m --, --NH--CO--(CH.sub.2).sub.m -- or --SO.sub.

Abstract: Disazo and polyazo compounds of the formula ##STR1## wherein each A is independently ##STR2## andeach R.sub.1 and the ##STR3## radical to which it is attached, taken together, independently, are ##STR4## wherein ring B may be substituted by one substituent selected from halogen, C.sub.1-4 alkyl and C.sub.1-4 alkoxy, and each R.sub.3 is independently C.sub.1-4 alkyl, orwherein the ** denotes the carbon atom attached to X, or each A, R.sub.3 and the ##STR5## radical to which they are attached, taken together, independently, are each R.sub.1 and the ##STR6## radical to which it is attached, taken together, independently, are the radical of an aromatic carbocyclic or heterocyclic coupling component, ##STR7## wherein each R.sub.21 is independently halo, C.sub.1-4 alkyl or C.sub.1-4 alkoxy,p is 0, 1 or 2,the * denotes the carbon atom attached to the --N.dbd.N-- radical, andthe ** denotes the carbon atom attached to X,eachA.sub.1 and A.sub.