CONTROLLED RELEASE PARTICLES, PRODUCTION METHOD THEREOF, MOLDING MATERIAL, AND MOLDED ARTICLE
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United States of America Patent
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Aug 18, 2016
app pub date -
Aug 29, 2014
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Aug 30, 2013
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Abstract
A production method of controlled release particles 1 includes an oil phase component preparation step in which an oil phase component containing a hydrophobic slurry is prepared by dispersing, in a hydrophobic polymerizable vinyl monomer, an antibiotic compound that is hydrophobic and is substantially insoluble to the hydrophobic polymerizable vinyl monomer without the presence of a solvent; a water dispersion step in which a hydrophobic slurry is dispersed in water to prepare an aqueous dispersion; and a polymerization step in which the polymerizable vinyl monomer is subjected to suspension polymerization to produce a polymer.
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