Recovery and refining of dianhydrosugars
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United States of America Patent
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Sep 19, 2017
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Apr 9, 2009
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Apr 10, 2008
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Abstract
A process for the production of a refined dianhydrosugar-containing product is disclosed. The process includes controlled continuous crystallization of the dianhydrosugar-containing product to produce a solution saturated with the dianhydrosugar. The saturated solution is mechanically separated, for example by centrifugation, and the crystalline product is washed. The only solvent used is water. The dianhydrosugar-containing product is upgraded to at least 99.8% purity and recovery is 95% or greater.
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