AN APPROACH TO THE DESIGN OF LIGHTFAST DISPERSE DYES - ANALOGS OF DISPERSE YELLOW-42

The effects of incorporating a photostabilizer moiety into the aromatic rings of Disperse Yellow 42 have been investigated. The results of this study indicate that both the ring into which the stabilizer residue is placed and the actual type of stabilizer group employed influence the lightfastness of the dyes developed It has also been shown that the incorporation of a photostabilizer group into the backbone of Disperse Yellow 42 can lead to dyes superior in lightfastness to a physical mixture of Yellow 42 and commercial photostabilizer.