| abstract |
An asymmetric dioxazine compound of the following formula in the free acid form,n wherein R is hydrogen, halogen, sulfo or alkoxy, R 1 , R 2 and R 3 are each hydrogen or alkyl, X, and X 2 are each hydrogen, halogen, alkyl, alkoxy or phenoxy, Y is alkylene, phenylene or naphthylene, Z is -SO 2 CH=CH 2 , -SO 2 CH 2 CH 2 OSO 3 H or the like, V is hydrogen, alkyl, acyl or substituted triazinyl, and Q is halogen, alkoxy, amino or a group similar to that ofn provided that R is hydrogen, and Q is amino or a group similar to that ofn when V is substituted triazinyl, which is useful for dyeing or printing fiber materials to give dyed or printed products of a brilliant blue color superior in fastness properties, particularly those such as chlorine fastness with superior build-up property. |