Abstract
The effect of various amounts of two benzotriazole (Tinuvin P and Tinuvin 327) and one benzophenone (2,4-dihydroxybenzophenone) type UV-absorbers in the dyeing of polyester fabrics with commercial samples of a red monoazo disperse dye and Viosperse Yellow GLFS was examined at various depths of dyeing (0.5, 1.75 and 3% o.w.f.). The UV-absorbers were applied to the fibre at various UV-absorber/dye molar ratios by two processes, directly in the dyeing liquor and by aftertreatment of the dyed fabrics. The dye and UV-absorber uptake, and light and sublimation fastness of the dyed fabrics aftertreated by the reduction clearing process were determined and compared with those of the corresponding samples dyed in the absence of a UV-absorber.
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