Synthesis of a novel bridge compound having hetero-bi-functional reactive groups. Part 1: Its adsorption properties

A novel bridge compound having hetero-bi-functional reactive groups was synthesized. It was designed to contain two different reactive groups such as α,β-dibromopropionylamido and dichloro-s-triazinyl group within the molecular structure. The α,β-dibromopropionylamido group shows considerable reactivity towards amines or amino groups at acidic condition and high temperature. In contrast, the dichloro-s-triazinyl group has reactivity towards hydroxyl groups at alkaline condition and room temperature. In order to examine whether as a bridge the compound could combine dyes containing amino groups with cellulosic substrates, a disperse dye containing amino group was tried to dye the cotton fibers pretreated with the reactive compound. In this context, it was investigated that the synthesized compound was treated by using several experimental conditions such as temperature, pH, neutral salt, treatment time and concentration of the compound. It was also found that the compound of hetero-bi-functional reactive groups showed the feasibility as a bridge agent to combine the cellulosic fibers and the disperse dyes having amino groups.