Process for preparing guaifenesin tannate
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United States of America Patent
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Feb 10, 2004
Grant Date -
N/A
app pub date -
Dec 14, 2001
filing date -
Dec 14, 2001
priority date (Note) -
Expired
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Abstract
The invention pertains to a process for preparing guaifenesin tannate. The process involves the steps of mixing guaifenesin with tannic acid in the presence of water, continuing to mix the reaction mixture for about 5 minutes to about 4 hours and thereafter removing at least about 80 wt.% of the water by freeze-drying the reaction mixture.
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