Abstract: The rare earth auxiliary was used in low temperature dyeing of wool, and the dyeing effect was compared with that of conventional dyeing. The optimized dyeing condition were as follows: rare earth auxiliary 0.2% (o.w.f), dyeing at 80℃ for 60 min. Under this condition, the damage to wool fiber was decreased, and energy effect was improved.

Key words: wool; rare earth; low temperature; dyeing