Synthesis and dyeing performance of a novel yellow crosslinking polymeric dye

摘要

A polymeric dye was synthesised via the reaction of 2,4-dinitrochlorobenzene and polyallylamine prepared from the homopolymerisation of monoallylammonium chloride. The polymeric dye was fixed to cotton and silk via a crosslinking agent [2-chloro-4,6-di(aminobenzene-4′-β-sulphatoethylsulphone)-1,3,5-s-triazine]. The fixation of this polymeric dye reached 99% and the dyeing was fast to dimethylformamide at the boil, indicating that the dye fixation was through covalent bonding with the crosslinking agent, which acted as a bridge between the fibre polymer and the dye molecule. The dyed samples showed excellent fastness to washing and rubbing.