Purifying cyclic esters by aqueous solvent extraction and further purification
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United States of America Patent
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Jan 5, 1999
Issued Date -
N/A
app pub date -
Sep 30, 1997
filing date -
Mar 19, 1992
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Expired
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Abstract
A process is provided for the production and purification of cyclic esters in which the purification includes the introduction of an aqueous solvent into a cyclic ester containing composition and allowing two phases to form. A first phase includes cyclic esters and any organic solvent, and a second phase includes the aqueous solvent and impurities.
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