SELF-DISPERSING PIGMENT DISPERSIONS AND INK JET INKS CONTAINING THEM

摘要

The disclosure provides a self dispersing pigment dispersion for use in inks comprising a pigment having a stabilizing group covalently attached to the pigment surface, and having an oil adsorption of at least about 155 to about 179 mL/100g, and an acid content of at least about 0.98 microequivalent/m2, and wherein the pigment dispersion has a pigment densification rate of less than about 8.40 E-04 mL/second. Ink jet inks containing these self-dispersing pigments, are also provided.