Disperse dyes containing a built-in oxalanilide stabilizer

Monoazo and nitrodiphenylamine disperse dyes containing an oxalanilide phot ostabilizer have been synthesized and evaluated for lightfastness as potent ial automotive dyes. The results showed that the lightfastness of CI Disper se Red 167 could be appreciably enhanced, depending on the substituent empl oyed in the oxalanilide moiety. While it was also possible to improve the l ightfastness of CI Disperse Yellow 86, the resulting lightfastness was not as high as that observed when a hydroxybenzophenone stabilizer was incorpor ated. (C) 1999 Elsevier Science Ltd. All rights reserved.