dyeing process for reserve effects or effects on a substrate.

摘要

A wet-on-wet dyeing process for dyeing anionic dyeable substrates comprises A) applying locally to the substrate at room temperature, a liquor or paste containing an alkoxylated fatty amine or polyamine having affinity for anionic dyes with a K'pH8-value/=5, B) impregnating the substrate with an acid dyeing liquor containing an anionic dye having a K'pH6-value/=5 C) subsequently submitting the substrate to a heat treatment to effect fixation of the dye. The alkylated fatty amines used fall within the formula: IMAGE in which R is (C10-24) alkyl or (C10-24) alkenyl X1 is -CO- or a direct bond, in each (A-O)x, (A-O)y and (A-O)z chain A is, independently, -CH2CH2- or -CH(CH3)-CH2-, each n is 2 or 3 independently, m is 0 or 1-6 and each x, y or z is 1-100, the sum x+y+z being 10-100 and is in the form of a free base, acid addition salt, quaternary ammonium salt or mixture thereof or mixtures of such compounds differing by virtue of the significance of R.