Synthesis and Application of Monofunctional ReactiveDyes Based on 3-(4-amino phenyl)-5-Benzylidene-2SubstitutedPhenyl-3, 5-Dihydro-Irnidazol-4-0ne

A series of nine novel heterocyclic based monoazo reactive dyes were synthesized using variously substituted imidazol-4-one. Reactive dyes provide a great opportunity for efficient dye fiber reaction due to dichlorotriazinyl reactive groups, which may cover a wide range of application temperatures. Nine monofunctional reactive dyes were applied to wool fibers using various pH conditions. The optimized exhaustion (%E) and fixation(%F) were determined. Analysis of dye solutions being adjusted to different pH conditions was carried out to verify the structure of dye moieties. The resultant dyes were characterized using standard spectroscopic methods and then dyeing performance on wool fabric was assessed. Wash and light fastness properties of prepared dyes showed encouraging results .