Method for producing 2,6-dihydroxybenzoic acid
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United States of America Patent
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Apr 19, 1994
Grant Date -
N/A
app pub date -
Jan 22, 1993
filing date -
Jan 23, 1992
priority date (Note) -
Expired
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Abstract
A method for producing 2,6-dihydroxybenzoic acid, which comprises heating an aqueous solution which contains a mixture of 2,6-dihydroxybenzoic acid and 2,4-dihydroxybenzoic acid and has a pH value of 4 or more, to selectively decompose 2,4-dihydroxybenzoic acid, and separating 2,6-dihydroxybenzoic acid from the decomposition reaction mixture.
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