Formation of discrete polyalkylene carbonate particles by solvent/non-solvent precipitation
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United States of America Patent
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Dec 4, 1990
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N/A
app pub date -
Mar 27, 1989
filing date -
Mar 21, 1988
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Expired
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Abstract
Discrete, non-agglomerating particles of polyalkylene carbonate are produced by solvent/non-solvent precipitation using certain solvent/non-solvent systems. The free-flowing particles obtaine are from 30 to 3000 microns in diameter and are suitable for use in a variety of applications, particularly the preparation of foamed articles.
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