Stock material or miscellaneous articles – Coated or structually defined flake – particle – cell – strand,... – Particulate matter
Reexamination Certificate
2005-02-22
2005-02-22
Le, H. Thi (Department: 1773)
Stock material or miscellaneous articles
Coated or structually defined flake, particle, cell, strand,...
Particulate matter
C525S330300, C525S333300, C525S331900, C525S902000, C430S138000
Reexamination Certificate
active
06858301
ABSTRACT:
Polymer particles are provided having (1) a core with a glass transition temperature within a range of −50° to +110° C. and (2) a shell surrounding the core. The core comprises at least one layer, with the layer(s) comprising at least one polymerized hydrophobic monomer and, optionally, a first cross-linker. The shell comprises a copolymerized mixture of least one hydrophobic monomer and at least one hydrophilic monomer and a second cross-linker for increasing thermal shear stability by forming cross-linkages. Use of these polymer particles in aqueous-based ink-jet inks provide laser print quality without any secondary treatment.
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Hewlett--Packard Development Company, L.P.
Le H. Thi
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