Liquid monoazo-naphthalene dyestuffs, and their use

Abstract

Liquid dyestuffs of the general formula: ##STR1## in which A and B each represent the residue of an aromatic benzene or naphthalene primary amine, possibly substituted by alkyl or alkoxy groups containing 1 to 2 carbon atoms, n represents 0 or 1, y represents 0 or 1, x and Z each represent a whole number such that the sum x + y + z is a whole number from 5 to 17, a process for the preparation of such dyestuffs in which there is coupled in aqueous medium the diazo derivative of an amine of the general formula: A - [N=N - B].sub.n -NH.sub.2 in which A, B, n have the same significance as in claim 1, with a compound of the formula: ##STR2## in which x, y and z have the same significance as above, and the use of these dyestuffs for the coloration of petroleum products, inks, fats, waxes and plastics material.

Dependencies are inferred from the claim text.