Composite core coated microparticles and process of preparing same
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United States of America Patent
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Feb 4, 1986
Grant Date -
N/A
app pub date -
Feb 6, 1984
filing date -
Feb 6, 1984
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A process for preparing coated microparticles, which process comprises preparing a solvent solution of an active ingredient to be encapsulated and a film-forming polymer, removing the solvent to provide a dry, composite, uniform admixture of the active ingredient and the polymer material, reducing the composite admixture to a defined smaller particle size distribution, coating the reduced composite core particles in a fluidized bed, with a uniform defined wall thickness of the same or substantially the same film-forming polymer material to provide composite core coated microparticles.
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