A polyazo compound of the following formula,
wherein F is a bisazo or trisazo dye moiety, R₁, R₂ and R₃ are independently of one another are each hydrogen or alkyl, B₁ and B₂ independently of one another are each phenylene or naphthylene, Y₁ and Y₂ independently of one another are each -CH=CH₂ or -CH₂CH₂L in which L is a splittable group, which is useful for dyeing or printing fiber materials to give dyed or printed products with superior dye performance such as build-up property. 
                            一种下式的多偶氮化合物、
其中 F 是双偶氮或三偶氮
染料分子,R₁、R₂ 和 R₃ 相互独立地各自是氢或烷基,B₁ 和 B₂ 相互独立地各自是亚苯基或亚
萘基、Y₁ 和 Y₂ 相互独立地各自为 -CH=CH₂ 或 -CH₂CH₂L,其中 L 为可拆分基团,可用于纤维材料的染色或印花,使染色或印花产品具有优异的染色性能,如上染性能。