PROCESSES FOR PREPARING A SOLID POLYMER MATRIX CONTAINING A CORE MATERIAL BY PRESSURE CYCLING OF SUPERCRITICAL FLUID
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United States of America Patent
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Issued Date -
Aug 18, 2016
app pub date -
Oct 7, 2014
filing date -
Oct 8, 2013
priority date (Note) -
Abandoned
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Abstract
There is provided a supercritical fluid-based process for preparing a solid polymer matrix containing a core material, wherein the process includes the step of mixing the polymer, core material and supercritical fluid in a mixing vessel, followed at least one cycle of, without recovering the solid polymer matrix, (i) converting the supercritical fluid in the mixing vessel to a sub-critical state, and then (ii) returning the fluid to the supercritical state, provided that the core material does not comprise any of gonadotropin releasing hormone (GnRH), a GnRH agonist and a GnRH antagonist.
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