Use of DGSS gemini surfactants in dyeing of wool fabrics

In order to improve the dyeing behavior the conventional acid dyes on wool fabrics,six DGSS gemini surfactants were developed and used in the dyeing wool fabrics with convention acid dyes,and their effects on the dyeing properties of the wool fabrics were investigated.A comparison was made between the six DGSS Gemini surfactants and the composite additives FFA+SET.The results indicated that DGSS has little effect on the shade of the dyeings.When the dosage of DGSS was half as much as that of FFA+SET and used in the dyeing of wool fabrics with acid dyes,DGSS exhibited better initial rate of dyeing.DGSS series displayed better levelness when used in the dyeing of wool fabrics with Argacid Red N-PB,in particular,GSSEEB is obviously superior to FFA+SET.However,when Argacid Blue N-PR was used,only GSSEH,GSSBH and GSSBMP exhibited good levelness but slightly inferior to FFA+SET.With GSSEEB amount of 3.0%(o.w.f) in the dyeing of wool fabrics with Argacid Red N-PB,slight unevenness was observed,with apparent color depth close to that of FFA+SET.And when the amount of GSSBH of 3.5%(o.w.f) was used in the dyeing of wool fabrics with Argacid Blue N-PR,its evenness was better than that FFA+SET,and apparent color depth comparable to that of FFA+SET.