THE TENDERING OF DYED NYLON 6 BY EXPOSURE TO LIGHT (1)

In experiments on the effect of disperse acetate colours on the tendering of nylon 6 by exposure to light, aminoanthraquinone dyes increased the degree of tendering, while azo dyes decreased it.No relation was found between the light absorption of dyes and the degree of tendering. Correlation was found, however, between tendering and fading, when dyes were devided into two groups, a minoanthraquinone dyes and azo dyes.Experiments on the action of anthraquinone derivatives suggested that the photosensitivity of anthraquinone dyes is mainly due to their anthraquinone nucleus.