Abstract: The migration behavior of reactive disperse dyes containing β-hydroxy-ethyl sulfonyl sulfuric ester group at different stages of dyeing and the ther-mofixation on the polyester-cotton blend were thoroughly investigated. The sublimation properties of the dyes were examined and the diffusive process of dyes in the vapor phase during thermofixation was identified. It was concluded that thermofixation conditions would effect the dye distribution in the cotton and polyester portions in the blend. The relationship between the dye molecule structures with respect to their distribution in the cotton and polyester portions was established. A dyeing mechanism of reactive disperse dyes for polyester-cotton blend was outlined and discussed.

摘要： 本文探讨了含β-羟乙基砜硫酸酯基活性分散染料在涤-棉混纺织物上热熔染色各阶段的迁移及其存在形态.测定了染料的升华性能和气相转移.研究热熔条件对染料在涤-棉混纺织物上分配的影响及染料分子结构与分配的关系.由此提出了这类染料在涤-棉混纺织物上的热熔染色机理.