Continuous dyeing process which provides improved wetfastness: alkandlamine-containing dye liquor and after-treatment with fixing agent

摘要

The invention relates to a process for continuous dyeing a cellulosic fibrous substrate with a direct or reactive dye comprising the steps of (a) applying to the substrate an aqueous dyeing liquor containing an alkanolamine, followed by (b) fixing the dyeings, and finally (c) after-treating the dyed substrate with a fixing agent, the resulting dyeings having improved wet fastnesses.