Abstract: The influences of dispersant structure, dosage and dispersing conditions on dispersing effect of disperse red 60 were studied. Influence factors on transfer printing effect were analysed. The result indicated that the PSMA applied to disperse red 60. The ultrafine disperse dye prepared with PSMA, 100 percent by weight of disperse dye, by grinding for 4 hours had 157nm diameter. Its centrifugal stability was 96.3% and particle size change rate under 60℃ for 24h was 3.4%. The transfer printing fabric with smaller particles of disperse dye had uniformer color and higher K/S value. The optimum transfer printing conditions were transfer printing at 210℃ for 40s when the viscosity of printing paste was 60 mPa·s.

Key words: ultrafine disperse dye, preparation, transfer printing, printing effect