Process for the purification of carbohydrate derivatives with surface-active properties
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United States of America Patent
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Dec 30, 1997
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N/A
app pub date -
Feb 8, 1996
filing date -
Feb 8, 1995
priority date (Note) -
Expired
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Abstract
A process is described for the purification of carbohydrate derivatives with surface-active properties in which an extraction process is used to liberate the solid or liquid starting material from undesired lipophilic by-products by the use of compressed propane or a proportionate mixture thereof with butane at pressures between 8 and 150 bar and a process temperature below 120.degree. C. In this way it is possible to isolate valuable raw materials in a gentle manner either batch-wise or continuously which meet the high purity requirements, for example in the field of cosmetics.
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