Patent Number: 8,318,833

Title: Polymer-encapsulated pigment with amphiphilic passivation layer

Abstract: The present invention is drawn to pigment suspensions, methods of forming pigment suspensions, and ink sets. The pigment suspension can comprise an aqueous liquid vehicle and a polymer-encapsulated pigment suspended in the liquid vehicle. The polymer-encapsulated pigment can include a pigment core, a passivation layer formed from a passivation component including an amphiphilic polymer and deposited on a surface of the pigment core, and a polymer-encapsulation layer attached to or deposited on the passivation layer.

Inventors: Ganapathiappan; Sivapackia (Los Altos, CA)

Assignee: Hewlett-Packard Development Company, L.P.

International Classification: C09D 11/02 (20060101); C09D 109/00 (20060101); C09D 123/00 (20060101)

Expiration Date: 2021-11-27 0:00:00