| abstract |
A dioxazine compound represented by the following formula in a free acid form, ##STR1## wherein R is halogeno, alkyl, alkoxy or sulfo, and W is ##STR2## wherein V is a direct linkage or ##STR3## in which R 3 is hydrogen or alkyl, X is a direct linkage or an aliphatic, alicyclic, araliphatic or aromatic bridging group, Y is unsubstituted or substituted phenylene or naphthylene, Z is --SO 2 CH═CH 2 , --SO 2 CH 2 CH 2 OSO 3 H or the like, Q is sulfo, hydroxy, halogeno, alkoxy, phenoxy or amino, and R 1 and R 2 independently of one another are each hydrogen or alkyl, which is useful for dyeing or printing fiber materials with advantages to give dyed or printed materials superior in fastness properties such as chlorine fastness. |