Multi-stage anionic dispersion homopolymerization to form microparticles with narrow size distribution
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United States of America Patent
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May 9, 1989
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N/A
app pub date -
Dec 29, 1987
filing date -
Dec 29, 1987
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Expired
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Abstract
Styrene or other anionically polymerizable monomer is anionically homopolymerized in a dispersion using a non-solvent, e.g., hexane using three or more stages to obtain spherical microparticles, e.g., 2-5 microns, with a narrow size distribution.
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