Abstract: In this paper, the mechanism of soaping after reactive dyeing was explained. The removal process of dyes, alkali and electrolyte was analyzed. Soaping enzymes, low temperature soaping agents, acidic soaping agents and React@EVO agents were introduced. Process conditions of soaping were analyzed. It was pointed out that developing of eco-friendly, energy-saving soaping agents and researching on soaping after low bath ratio dyeing were important.

Key words: reactive dyeing; soaping mechanism; soaping agent