Structure and components design of low temperature dyeing accelerator BLB for disperse dyes

Based on the theoretical analysis on disperse dyeing of polyester fiber by structure design and components optimization,an environmental-friendly aromatic ester ALE-F was prepared,which showed excellent accelerating effect for low temperature dyeing.Emulsifying method of ALE-F was researched and developed,that is,specific composite emulsifier DT-1 was prepared with non-ionic surfactants 600-3#,EL-10 and anionic surfactant AES,then emulsifying of ALE-F was conducted with 6% specific emulsifier DT-1,thus obtained high internal phase emulsifies,i.e.,low temperature dyeing accelerator BLB.The dyeing tests indicated that,adding 2% BLB(o.w.f) into the dyeing bath with dye concentration of 1%(o.w.f),the dye uptake of all three types of disperse dyes(high,middle and low temperature suitable) can exceed 95% at 105 ℃,and good color fastness is achieved as well.