Method for preparing ester compounds as bleach activators
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United States of America Patent
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May 4, 2010
Grant Date -
Apr 23, 2009
app pub date -
May 25, 2004
filing date -
Mar 31, 2004
priority date (Note) -
Expired
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Abstract
A method for preparing an ester bleach activator compound is disclosed. The method includes (A) preparing fatty acid monoester; (B) making chloroformate by reacting the fatty acid monoester with at least one selected from the group consisting of phosgene, diphosgene and triphosgene in the presence of base; and (C) reacting the chloroformate with hydroxybenzene, its derivatives, or its salts in solvent. According to the method, the ester bleach activator compound can be made in a simple and economic way.
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