Synthesis and Charcterization of Some Cold Brand Reactive Dyes and Their Application on Various Fibres

Abstract

Various reactive dyes have been prepared by coupling diazotised
4,4'-methylene-bis-o-bromo aniline with cyanurated coupling components
and their dyeing performance as reactive dyes has been
assessed on silk, wool and cotton fibre. All the dyes gave yellow
to maroon shades with good to very good light fastness on each
fibre. The purity of dyes was checked by thin layer chromatography.
The IR spectra showed all characteristic bands and a representative
dye's PMR spectra showed all the signals. The percentage dye-bath
exhaustion on different fibres was reasonably good and acceptable.
The dyed fibres showed moderate to very good fastness to light,
washing and rubbing.