An Attempt to Enhance the Effectiveness of the Aftertreatment of Direct Dyeings With Cationic Fixing Agents

An attempt was made to enhance the effectiveness of two commercial cationic fixing agents in improving the wash fastness of three commercial direct dyes on cotton. A syntan was subsequently applied to the aftertreated dyeings and the possible beneficial effect of this additional treatment on the fastness of the dyeings to the ISO C06/C2 wash test was assessed. Use of the syntan marginally enhanced the effectiveness of the cationic fixing agents but the effect of the syntan was both dye- and fixing agent-specific