METHOD OF PREPARING CROSS-LINKED COLORANT DISPERSIONS

摘要

A process for preparing a crossed-linked colorant dispersion is provided in which a pigment and a dispersant polymer having a cross-linkable moiety are subjected to micromedia milling followed by a purification step to remove small pigment particles before reacting the cross-linkable moiety on the dispersant polymer with a cross-linking agent. Also disclosed is the use of dispersions made from this process in ink-jet inks.