| 摘要 |
There is described novel azo dyes of formula (4) with high water solubility for use in aqueous inks, particularly for ink jet recording, which provide images having high water, smudge and light resistance <CHEM> wherein n, m are each independently 2 to 6; R is hydrogen or an aliphatic radical having from 1 to 6 atoms; M is hydrogen, a metal atom, preferentially an alkali metal, an ammonium or ammonium substituted with alkyl, alkoxyalkyl or hydroxyalkyl each having 1 to 12 C atoms and F represents a mono-azo or a poly-azo dye residue. |
