Abstract:

 Aiming at the problem of high pollution problem of direct printing on polyester fabric, according to the process requirements of micro-printing, 4 liquid disperse dyes and acrylate binder SA modified by organic silicone were prepared. The properties of 4 liquid disperse dyes and the influcnce of liquid disperse blue MR on the rheology and viscosity of synthetic thickener PTF-3 were studied, and the influence of the binder on the dye uptake rate of commercial disperse blue 79 and liquid disperse blue MR were investigated. Moreover, the color fastness of 4 liquid disperse dyes were tested, and the influence of commercial disperse yellow 6G on the rheology of printing pulp and the change of the absorbency of the reduced and cleaned commercial disperse blue 79 residual liquid were compared. The results show that the self-prepared liquid disperse dyes have excellent diffusivity, and do not contain banned components. The binder is favourable to improve the percentage of dye uptake rate. The micro-printing process adopting printing color pulp containing liquid disperse dye MR, binder SA and thickener and the post-treatment by hot water washing has the advantages of good printing performance and color fastness, and can omit reduction and cleaning to reduce the water consumption.

Key words: liquid disperse dye, micro-printing, binder, low pollution, thickener