Synthesis of a novel bridge compound having hetero-bi-functional reactive groups. Part 2: the characteristics of disperse dyeings

A novel hetero-bi-functional reactive compound was synthesized. It was designed to provide different reaction behaviors resulting from α,β-dibromopropionylamido and dichloro-s-triazinyl reactive group. To determine whether the reactive compound (DBDCBS) as a bridging part could combine disperse dyes and cellulosic fibers, three different disperse dyes were used to dye the cotton fibers pretreated with the novel reactive agent. The disperse dyes used were 1,4-dihydroxyanthraquinone (DHAQ), 1-amino-4-hydroxyanthraquinone (AHAQ) and 1,4-diaminoanthraquinone (DAAQ). These dyes contain none-, mono- and di-amino groups in their structures, respectively. Especially, the satisfactory dyeing results were achieved by the disperse dyeings of 1,4-diaminoanthraquinone (DAAQ) due to having two amino groups within the structure. The fastness properties of DAAQ dyeings showed very higher grades in terms of grey scale assessments due to their covalent bonding characteristics.