Polymeric dispersants for ink-jet applications
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United States of America Patent
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-
Feb 19, 2008
Grant Date -
Oct 13, 2005
app pub date -
Apr 13, 2004
filing date -
Apr 13, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An ink-jet ink which includes a liquid vehicle and a polymer-dispersed pigment dispersed in the liquid vehicle is disclosed and described. More specifically, the polymer-dispersed pigment can include a pigment encapsulated with a polymer having hydrophilic and hydrophobic moieties. The polymer can be a polymerization product of at least a first monomer having a hydrophilic group, and a second monomer having a hydrophobic group. Further, the polymer can be configured such that the polymer-dispersed pigment is stable in the liquid vehicle at a pH of from about 5.5 to about 8.5. Such polymer-dispersed pigments allow for formation of ink-jet inks with improved options for bleed control mechanisms and increased reliability of ink-jet architecture.
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