STRUCTURES AND COLOUR PROPERTIES OF POLYOXYETHYLENE AZO DISPERSE DYE
A series of polyoxyethylene azo disperse dye and their intermediates are analyzed.Their structure and colour properties are studied with MS, 1H NMR and UV/VIS spectra.MS spectra reveal that the ethoxylated azo dyes are a mixture of compounds with similar body structure but differ in polyoxyethene chain length.The influence on the e mol values of the polyoxyethylene dye is observed.