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Synthesis and Application of Cationic Formaldehyde-free Fixing Agent for Reactive Dyes

Hu Feiyang Wu Dongming Chen Shengzhen Ye Yongzhao (Jiangmen Polytechnic,Jiangmen 529090)  
Three cationic formaldehyde-free fixing agents such as H,Q and W,were synthesized and compounded. Their applications were compared.The result showed the fixing effect of M-3 fixing agent prepared by mixing fixing agent Q and W at mass ratio of 1 to 1,was best.The wet rubbing fastnesses were up to grade 4 and 3 respectively when M-3 was applied to the medium fabric and fuscous fabric.Furthermore,the best fixing process conditions of M-3 were studied as follows:the dosage of M-3 used at 6%(based on total mass of fabric),fixing temperature 50~60℃.and pH 6~7,and dipping time 20 minutes when applied to the medium fabric;but the dosage of M-3 used at 8%,fixing temperature 40~45℃and pH 7~8,and dipping time 20 minutes when applied to the fuscous fabric.
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