Abstract
Syntheses of nine kinds of yellow vat colors, (4), (5), (6)(C. I. Vat Yellow 27), (7a) or (7b), and (9)-(13), respectively, were made from condensation hydroxynaphthophenazine derived from 2-hydroxy-1, 4-naphthoquinone, sultazines and Naphthol-AS with 2, 3-dichloronaphthoquinone. Dyeing property and stability towards the light of these products have been investigated. The photosensitzed tendering was less in naphthosultumphenazine derivatives containing no furan ring and was more prominent in brasanquinone derivatives con taining furan ring. 6-Hydroxynaphthoquinone (2) can be used as a bottoming agent but the dyeing was rather light and its substantivity was 3/4 of Naphthol-AS.
