Process for the preparation of a spermicidal agent
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United States of America Patent
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Dec 25, 2001
Grant Date -
N/A
app pub date -
Jan 15, 1998
filing date -
Jan 14, 1998
priority date (Note) -
Expired
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Abstract
A process for preparing a spermicidal agent from neem oil includes (a) mixing neem oil with an aliphatic hydrocarbon solvent so that a precipitate forms, and filtering the mixture to separate the filtrate solution from the precipitate; (b) contacting the filtrate solution of step (a) with a polar extractant solvent whereby a spermicidal agent is extracted from the filtrate solution into the polar extractant solvent; and (c) removing solvent from the polar extractant solvent to produce a concentrated solution containing extract a spermicidal agent.
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