| abstract |
The invention relates to a method for dyeing fibrous materials containing cellulose with acid dyes, characterized in that the fibrous materials containing cellulose are pretreated in an aqueous pretreatment bath which as component (A) contains a compound of formula (1), where A is an anion, and as component (B) contains a cross-linking resin, after which said materials are died with at least one acid dye using an exhaust process. |