Method for producing and dehydrating cyclic formals
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United States of America Patent
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Issued Date -
Aug 13, 2009
app pub date -
Oct 6, 2005
filing date -
Oct 8, 2004
priority date (Note) -
Abandoned
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Abstract
Processes are described which comprise: (a) providing a mixture comprising a cyclic formal and water, wherein the mixture has a cyclic formal concentration and a water concentration; (b) bringing the mixture into contact with an aqueously selective membrane; (c) creating a pressure differential across the membrane; and (d) obtaining a permeate having a higher water concentration and a lower cyclic formal concentration than the mixture, and a retentate having a lower water concentration and a higher cyclic formal concentration than the mixture.
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