Polyamide dyeing with ultra-high wet fastness

Argacid Red SS-R is a specific acid dye of high wet color fastness for polyamide dyeing with brilliant shade and excellent color fastness to washing and perspiration. Factors affecting polyamide dyeing results were discussed such as dosage of calcium chloride,bath ratio,pH value of dye bath,holding time and rinsing process. Results showed that the optimum dyeing process was calcium chloride 10% (owf),dyeing at 98 ℃ for 40 minutes with pH value of 4,rinsing at 90 ℃ for 20 minutes with soda 1 g/L and Argalin S 5% (owf),and later neutralizing with water. Polyamide dyeings with Argacid Red SS-R could meet the request of color fastness under harsh conditions.