Stock material or miscellaneous articles – Coated or structually defined flake – particle – cell – strand,... – Particulate matter
Reexamination Certificate
2006-07-31
2009-06-09
Le, H. (Holly) T (Department: 1794)
Stock material or miscellaneous articles
Coated or structually defined flake, particle, cell, strand,...
Particulate matter
C428S032500, C428S032370, C428S212000, C106S499000, C106S500000
Reexamination Certificate
active
07544418
ABSTRACT:
The present invention is drawn to polymer-encapsulated pigments and methods of making the same. The method includes providing an emulsion including water and a discontinuous coating phase having a copolymer dissolved in a monomer mix; providing a pigment dispersion including water, surfactant, and pigments dispersed therein; mixing the emulsion with the pigment dispersion under high shear conditions such that the coating phase is deposited on the pigments, thereby forming polymer and monomer coated pigments; and polymerizing the monomers at the surface of the polymer and monomer coated pigments to form polymer-encapsulated pigments dispersed in a fluid medium.
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Ganapathiappan Sivapackia
Vincent Kent D.
Hewlett--Packard Development Company, L.P.
Le H. (Holly) T
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