Abstract: Basic azo dyestuffs of the general formula ##SPC1##Wherein D denotes the residue of a diazo component which may contan an azo group and which contains at least one amino, hydrazino or etherified hydroxylamino group that may be quaternated are valuable dyestuffs for dyeing and printing synthetic fibres distinguished by a good fastness to light and a very good fastness to sublimation.

Abstract: A process for dyeing and printing textile materials made of or containing fully synthetic hydrophobic linear polymers which are free from amino groups, wherein the material is padded with a dispersion dyestuff containing at least one carboxyl group, the padded textile material is dried and printed with an alkaline printing paste, the fabric is thermo-fixed and the salt of the dyestuff containing a carboxyl group is subsequently washed from the printed areas.

Abstract: Polyester fibers dyed with a disazo disperse dyestuff free from --SO.sub.3 H groups imparting solubility in water of the formula ##SPC1## in which X represents hydroxyl or amino, R.sub.1 and R.sub.2 each represents hydrogen, phenyl, C.sub.1 -C.sub.2 -alkyl, C.sub.1 -C.sub.2 -alkoxy, and, when X = OH, also C.sub.1 -C.sub.2 -alkoxycarbonyl or -CONH.sub.2, Z represents --O--, --S--, --NH--, cyclohexylidene, C.sub.1 -C.sub.2 -alkylene, --O--(C.sub.1 -C.sub.2 -alkylene)--O--, and R.sub.3 and R.sub.4 each represent hydrogen, C.sub.1 -C.sub.2 -alkyl, C.sub.1 -C.sub.2 -alkoxy or chlorine, and D.sub.1 and D.sub.2 are each a radical of a diazo component of the heterocyclic series are disclosed.

Abstract: A water-soluble basic dyestuff which corresponds to the formula(A-Q.sup.+) X.sup.

Abstract: Azo compounds of the formula ##SPC1##Wherein D represents the radical of a diazo component, R.sub.1 and R.sub.3 each represent a hydrogen atom or a substituent and R.sub.2 represents a substituent, and which contain at least one carboxy group that may not, however, be bonded in the adjacent position to the azo bridge directly to the ring.