Low bulk density, low surface dielectric constant latex polymers for ink-jet ink applications
AssigneeHewlett-Packard Development Company, L.P.
InventorsSivapackia Ganapathiappan, Kent Vincent
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Abstract
The present invention is drawn toward latex particulates in ink-jet inks having a surface dielectric constant from 2.0 to 3.0.
Claims47
An ink-jet ink, comprising effective amounts of:
- a) an aqueous ink vehicle;
- b) a colorant admixed in the ink vehicle;
- c) latex particulates dispersed in the ink vehicle, said latex particulates having a bulk density from 0.90 g/cm3 to 1.10 g/cm3 and a surface dielectric constant from 2.0 to 3.0 at room temperature;
- and
- d) surfactant adsorbed on the surface of the latex particulates.
A copolymeric latex particulate having a bulk density from 0.90 g/cm3 to 1.10 g/cm3 and a surface dielectric constant from 2.0 to 3.0 at room temperature and having a surfactant adsorbed on the surface of the latex particulate.
An ink-jet ink, comprising effective amounts of:
- a) an aqueous ink vehicle;
- b) a colorant admixed in the ink vehicle;
- and
- c) copolymeric latex particulates dispersed in the ink vehicle, said latex particulates having a bulk density from 0.90 g/cm3 to 1.10 g/cm3, a surface dielectric constant from 2.0 to 3.0 at room temperature, and a surfactant adsorbed on the surface of the latex particulates.
An ink-jet ink, comprising effective amounts of:
- a) an aqueous ink vehicle having a predetermined liquid density;
- b) a colorant admixed in the ink vehicle;
- and
- c) copolymeric latex particulates dispersed in the ink vehicle that are separate from the colorant, said latex particulates having a bulk density from the same as the liquid density to 0.1 g/cm3 greater than the liquid density and having a surfactant adsorbed on the surface of the latex particulates.
A copolymeric latex particulate having a bulk density from 0.90 g/cm3 to 1.10 g/cm3 and a surface dielectric constant from 2.0 to 3.0 at room temperature and being crosslinked by a crosslinking agent at from 0.5 wt % to 5 wt %.
An ink-jet ink, comprising effective amounts of:
- a) an aqueous ink vehicle;
- b) a colorant admixed in the ink vehicle;
- and
- c) copolymeric latex particulates dispersed in the ink vehicle, said latex particulates having a bulk density from 0.90 g/cm3 to 1.10 g/cm3, a surface dielectric constant from 2.0 to 3.0 at room temperature;
- wherein said copolymeric latex particulates are crosslinked by a crosslinking agent at from 0.5 wt % to 5 wt %.
Dependencies are inferred from the claim text.