| abstract |
A monoazo compound of the following formula,n n wherein D is phenylene or naphthylene; X is halogeno, pyridinio orn n B is -OR₃, -SR₄,n n n in which R₃, R₄, R₅ and R₆ are each hydrogen, alkyl, phenyl, naphthyl or benzyl, r is 0 or 1, and E is O, SO, SO₂, CH₂ or NR₈, in which R₈ is hydrogen or C₁-C₄ alkyl; R, R₁, R₂ and R₇ are each hydrogen or alkyl; A₁, A₂ and A₃ are each phenylene, naphthylene or alkylene; Z₁, Z₂ and Z₃ are each -SO₂CH=CH₂ or -SO₂CH₂CH₂Y, in which Y is a splittable group; and p is 0 or 1; which compound is useful for dyeing or printing fiber materials to obtain a product dyed or printed in a color superior in various fastness properties with superior build-up property. |