Melting-reactive dyes for mass coloration of synthetic fibres (II) - 1,4-dihydroxyanthraquinone diglycidyl ether in nylon

Mass coloration of nylon using a melting- reactive dye is described. 1,4-Di hydroxyanthraquinone diglycidyl ether was synthesized as a novel melting- r eactive dye in which the epoxy groups in the dye would react with amino gro ups of nylon by a nucleophilic addition mechanism. The dye was confirmed by UV-vis, IR and H-1 NMR spectroscopic analyses. The effect of the proportio n of the added dye on the intrinsic viscosity of the polymer was studied. T hermal analysis showed high thermal stability and blending compatibilizatio n. The light fastness of the coloured fibre was measured. (C) 2001 Elsevier Science Ltd. All rights reserved.