Abstract: In order to improve the conventional acid dyes on wool fabric dyeing properties，the effect of six self-made gemini surfactants DGSS on Dyeing Properties of wool fabric was studied. A comparison of six different DGSS on dyeing performance of wool fabric, and plant additives FFA+SET composite additives were compared. The results indicated that six DGSS has no effect on the color light of the dyes. In the acid dyeing process， the consumption of DGSS is half the FFA+SET composite .DGSS can reduce the initial rate of dyeing. In the dyeing of Argacid Red N-PB, DGSS series have better levelness. The GSSEEB leveling effect is superior to that of FFA+SET composite additives. In the dyeing of Argacid Blue N-PR, GSSEH, GSSBH and GSSBMP have better levelness., but levelness is slightly lower than the FFA+SET composite additives. With GSSEEB amount of 3.0%o.w.f in the dyeing of Argacid Red N-PB, its dyeing uniformity was was better than the FFA+SET composite. The color fastness is close to FFA+SET composite. And with GSSBH amount of 3.5%o.w.f in the dyeing of Argacid Blue N-PR, its dyeing uniformity was also better than the FFA+SET composite. The color fastness is close to FFA+SET composite, too.

Key words: dyeing, acid dye, DGSS geminisurfactants, wool