Abstract: Concentrated, liquid preparations of metal-free direct azo dyes, which contain in each instance 1 part by weight of dye, 1 to 8 parts by weight of water, and 0.5 to 5 or preferably 0.5 to 2 parts by weight of an amide are useful for dyeing paper in the stock and for dyeing paper sheet.

Abstract: Dyes of the formula ##STR1## wherein R.sub.1 is a carbocyclic or heterocyclic diazo component radical,R.sub.2 is cyano or acyl,R.sub.3 is alkyl, carbocyclic aryl or heterocyclyl, or a substituted deriive thereof, andR.sub.4 is hydrocarbyl or substituted hydrocarbyl, with the proviso that R.sub.4 is free of sulfo groups and protonizable groups, are useful as disperse dyes for the dyeing and printing of fibres and textiles of synthetic and semi-synthetic, hydrophobic organic substances of high molecular weight. These dyes build up excellently and yield dyeings which are fast to thermofixation, sublimation, pleating, ozone, rubbing, gas fumes, water, sea water, perspiration, alkali and washing.

Abstract: Salts of stilbene-azo and stilbene-azoxy dyestuffs, and mixtures thereof in hich the cations are selected from tetra-alkylammonium, tetraalkylammonium in combination with lithium, sodium, potassium or ammonium, and ammonium in combination with lithium, sodium or potassium, have good cold water solubility relative to known salts of such dyes.The preferred dyes have the formula ##STR1## wherein (1) EACH R' is independently --SO.sub.3.sup..crclbar. M.sup..sym. or --SO.sub.3.sup..crclbar. N.sup..sym. (R).sub.4'wherein each R is independently alkyl of 1 to 6 carbon atoms or alkyl of 1 to 6 carbon atoms substituted by hydroxy, cyano, halo or phenyl, andEach M.sup..sym. is independently hydrogen, lithium, sodium, potassium or ammonium, with the proviso that at least one R' is --SO.sub.3.sup..crclbar. N.sup..sym. (R).sub.4'(2) each R' is --SO.sub.3.sup..crclbar. M.sup..delta.,wherein each M.sup..sym. is lithium, sodium, potassium, or ammonium, with the proviso that at least one M.sup..sym.

Abstract: Dyes of the formula ##STR1## wherein R.sub.1 is hydrogen or cyano,R.sub.2 is alkyl, aryl or heterocyclyl, or a substituted derivative there f,R.sub.20 is hydrocarbyl, heterocyclyl or amino, or a substituted derivative thereof preferably containing a protonizable nitrogen atom, andD is aromatic carbocyclyl or heterocyclyl, or a substituted derivative thereof, with the proviso that it is free of cationic groups,With the proviso that the molecule contains at least one protonizable nitrogen atom. These dyes are eminently suitable for the dyeing and printing of textiles which consist of or contain fibers of polyacrylonitrile or copolymers of acrylonitrile. They are suitable for dyeing polyesters and polyamides modified to contain acid groups as well as leather and paper. The dyes have high tinctorial strengths and give level dyeings exhibiting good fastness to light and wet treatments. The dyes are produced by diazotizing an amine of the formula D-NH.sub.