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United States of America Patent
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Issued Date -
Sep 18, 2014
app pub date -
Oct 26, 2012
filing date -
Oct 27, 2011
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Abstract
A dispersion comprising (a) a continuous liquid phase; and (b) a solid phase of epoxypolymer particles dispersed in the continuous liquid phase; where the polymer is formed from monomers that are insoluble in the continuous phase; a chemical agent is present within the polymer particles; and the dispersion is not a Pickering dispersion; and optionally the polymer molecules that form the polymer particles contain hydrophilic groups that hydrate on exposure to water in a manner that renders the particles permeable and that allows the chemical agent to diffuse out, and optionally at least one non-cross-linkable mobile chemical such that the extraction of this chemical from the dispersed phase renders it porous in a manner that allows the chemical agent to diffuse out.
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