The dyeing of nylon 6,6 with sulphur dyes

When nylon 6,6 was dyed with five sulphur dyes using two reduction systems, dyeings on nylon 6,6 were of comparable depth of shade to dyeings produced on cotton. The dyeings on nylon 6,6 displayed very good fastness to repeated washing and high resistance to oxygen bleach fading. The fastness of the dyeings to these agencies was enhanced by means of an aftertreatment with a commercial cationic fixing agent. Both the dry and wet rub fastness of the dyeings was very good but the dyeings displayed poor fastness to light.