Azo compounds represented by general formula (1) or salts thereof are provided as highly water-soluble colorants which have hues of yellow, orange, brown or red, and excellent color development properties and which, when used in various recording processes, particularly in an inkjet recording process, ensure various excellent fastnesses such as light fastness, ozone fastness, and fading balance. Ink compositions containing the colorants are also provided. In general formula (1), R1 to R8 are each independently a hydrogen atom, C1-4 alkyl, C1-4 alkoxy, or the like; and X is C1-8 alkylenediamino, xylylenediamino, or the like.
本发明提供了通式 (1) 所代表的偶氮化合物或其盐类,它们是高
水溶性
着色剂,具有黄色、橙色、棕色或红色的色调和优异的显色性能,在各种记录工艺中使用时,特别是在喷墨记录工艺中使用时,可确保各种优异的牢度,如耐光性、耐
臭氧性和褪色平衡。此外,还提供了含有这些
着色剂的墨
水组合物。在通式(1)中,R1 至 R8 各自独立地为氢原子、C1-4 烷基、C1-4 烷氧基或类似物;X 为 C1-8 烷二
氨基、二
甲苯二
氨基或类似物。