Emulsion Method For Preparing Low Residual Solvent Microparticles
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United States of America Patent
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Issued Date -
Apr 5, 2012
app pub date -
Sep 28, 2011
filing date -
Sep 30, 2010
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Abstract
The method disclosed herein comprises using a non-polar alkane in the continuous phase of an emulsion process to aid in the removal of dispersed phase solvent from the microparticles. The microparticles can further be subjected to a post-production treatment process, involving a non-polar alkane suspension and a rinse, to further reduce residual dispersed phase solvent levels.
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