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Dyeing Method and Properties of a Novel Blue Azo-Anthraquinone Reactive Dye on Cotton
Bin Shan1, Wei Xiong2, Shufen Zhang3
1School of Environmental & Municipal Engineering, Qingdao University of Technology, Qingdao 266033, China. shanbin@126.com.
Abstract:
A novel blue azo-anthraquinone reactive dye was evaluated in the dyeing of cotton by using a dip-pad-steam process. Dyeing method and properties were examined in detail and the results showed that the dyeing method consisting of dye concentration of 25 g/L, sodium carbonate of 12 g/L, dipping time of 3 min and steaming time of 30 min was the most effective when a conventional "one-dip-one-nip" process was used. The fixation of the dyes on cotton could reach up to 93.4%, the wash and rub fastness both reached grade 4 above, and the light fastness reached grade 4-5 above. Such colored cotton showed very close colorimetric properties.
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