The present work aims to investigate and develop a series of anthraquinone dyes containing carboxyl group for the polyester (PTT)/wool blend fabrics. These dyes were obtained by the condensation 1, 5-Dinitro-4, 8-dihydroxyanthraguine or 1, 8-Dinitro-4, 5-dihydroxyanthraguinewith 2-aminobenzoic acid, 3-aminobenzoic acid 4-aminobenzoic acid. All dyes were dyed on polyester (PTT), and polyester (PTT)/wool blends fabrics at different pH value (pH=3, 4, 5, 6) and their dyeing and fastness properties evaluated. The fastness properties of all the dyed samples were in accord with commercial requirements, and one of the carboxylic anthraquinone dyes dyed polyester (PTT) and wool fabrics to approximately the same depth.
