Abstract
While the contribution of UV absorbers to synthetic dyes has been investigated by several workers, there have been few studies pertaining to the use of functional UV absorbers as a means of improving the light fastness of natural dyes. In this paper, the influence of various UV absorbers on the photofading of carthamin has been examined on cellulose acetate film. The rate of photofading of the color was remarkably suppressed in the presence of UV absorbers bearing nickel sulfonate group, while the addition of simple UV absorbers afforded little retardation in the rate of fading.
