Alkoxylated fatty amines and polyamines as reserving agents

Abstract

The present invention provides a process for dyeing an anionic dyeable substrate with reserve and/or multicolored effects, which process comprises (1) impregnating the substrate with a dyeing liquor containing an anionic dye having a K'-value.gtoreq.5 (2) directly thereafter applying locally to the substrate a liquor or paste containing an alkoxylated fatty amine or polyamine having affinity for anionic dyes with a K'value.gtoreq.5 and optionally a disperse dye and/or an anionic dye or an anionic optical brightening agent with the proviso that the anionic dye or optical brightening agent has a K-value at least one unit lower than the K'value of the anionic dye used in step (1), and (3) subsequently submitting the substrate to a heat treatment to effect fixation of the dye(s) and, if used, optical brightening agent.

Dependencies are inferred from the claim text.