Crosslinked pigment dispersion based on structured vinyl polymeric dispersants
The present disclosure provides an aqueous dispersion comprising a solid particle and a structured vinyl polymeric dispersant, wherein said structured vinyl polymer dispersant comprises at least one hydrophilic segment and at least one hydrophobic segment, the hydrophilic segment comprising at least one crosslinkable moiety, wherein the crosslinkable moiety is cross-linked with a crosslinking agent that is substantially insoluble in the aqueous ink vehicle.These dispersions when used in ink jet inks provide images with the requisite optical density and chroma needed for emerging ink jet applications.
E I du Pont de Nemours and Company
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Christian Xiaoqing
Jackson Li