Water Soluble Fluorine Containing Reactive Dyes: Their Synthesis and Application on Various Fibres

Abstract

Various cold brand reactive dyes have been prepared by coupling

diazotised 4,4´-methylene bis-m-fluoro aniline with various cyanurated

coupling components and their dyeing perfomance as reactive has been

assessed on silk, wool and viscose rayon. These dyes have been found to

give a wide range of yellow to maroon shades with very good depth and

levelness on each fibre. The purity of all dyes has been checked by thinlayer

chromatography. The IR spectra showed all characteristic bands

present in the dye molecules and PMR spectra of a representative dye

showed all the characteristic signals of the dye. The percentage dye bath

exhaustion and fixation on different fibres have been found to be reasonably

good and acceptable. The dyed fibres show fair to very good fastness to

light, washing and rubbing.