| 摘要 |
An aqueous ink composition is provided having up to 50 wt.% of a colorant of the formula: A-{Y-X-C(O)-R1-C(O)O<->}p where A is an organic chromophore; Y is a polyoxyalkylene substituent; X is a radical of a reactive hydroxy, amino or thio group; and R1 is C2-30, substituted or unsubstituted alkylene, alkenylene, or phenylenealkylene. A counter ion selected from alkaline metal ions, alkaline earth metal ions, ammonium ions, amine salts, and zinc ammonium complexes is present in approximately stoichiometric proportion or greater relative to the colorant in the ink composition. |
