Abstract: The factors affecting stability of sucrose polyester emulsion such as emulsification method, the HLB value and dosage of compounded emulsifier, emulsification temperature and the type and dosage of thickener are investigated and get the optimum technological parameter. The application properties of the cotton fabric finished with sucrose polyester is tested, compared with 3 different softener in market. The results indicate that when emulsification method is inverse emulsion method and the HLB value and dosage of compounded emulsifier are 10.4 and 6%, and emulsification temperature and the type of thickener are 90℃ and synthetic thickeners PTF, the stability of sucrose polyester emulsion is the optimum, and the cotton fabric finished with sucrose polyester as good soft as fatty acid amide TF-449B, much better soft than modified fat hydrocarbon TF-564 and less soft than organic silicon softener TF-432B

Key words: sucrose polyester, HLB, emulsification, soft test, Prabometer