Preparation and Dyeing Performance of a Novel Crosslinking Polymeric Dye Containing Flavone Moiety

Abstract

A yellow crosslinking polymeric dye was prepared by grafting the flavone moiety containing azo chromophore onto polyvinylamine backbone. The λ max of this polymeric dye in water is 382 nm. The polymeric dye is fixed to silk and cotton with a crosslinking agent, 2-chloro-4,6-di(aminobenzene-4′-β-sulphatoethylsulphone)-1,3,5-s-triazine, which acts as a bridge between the fiber and dye molecules. The fixation of this polymeric dye reaches 99% and the dyed samples exhibit excellent rubbing and washing fastness.