Method of producing dry thioctic acid
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United States of America Patent
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Nov 9, 1999
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N/A
app pub date -
Jun 23, 1998
filing date -
Jun 23, 1997
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Expired
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Abstract
The present invention is relative to a method of producing dry thioctic acid in which a raw material in which concentrated thioctic acid is present is treated with liquid or supercritical CO.sub.2, thus yielding thioctic acid with low residual solvent contents in a simple industrial method.
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