THE INFLUENCE OF FATLIQUORS ON THE LIGHTFASTNESS OF DYED LEATHER

Process and product parameters were evaluated to determine their effec t on lightfastness of leather articles. The influence of fatliquors on the color fading of dyed leather depends on various factors. The comp osition of the fatliquors is only partly responsible for lightfastness properties. Tanning and dyeing agents also influence the color. A kno wledge of the chemical and physical reactions resulting from exposure to light is necessary. Light stabilizers can greatly improve the prope rties of a leather article. Several experiments and recommendations fo r improving lightfastness are discussed in this paper.