Arylene Azo-naphthol-furfuraldehyde Oligomer Dyes (Part-2)

摘要

A series of loigomeric acid azo dyes has been prepared by coupling various aromatic diazonium ssalts to 1-naphthol-furfuraldehyde (1-NF) and 2-naphthol-furfuraldehyde (2-NF) oligomers.They were evaluated in terms of their softning points,yield,colour,solubility and UV-Vis spectra.Structure-property relationships are discussed and dyeings on wool,silk and nylon-6,6 assessed.Dyeings on wool,silk and nylon-6,6 resulted in yellow,orange and brown to red colourations having excellent fastness to light and washing.