Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acids and salts thereof
Patent
1993-01-22
1994-04-19
Killos, Paul J.
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acids and salts thereof
C07C 6501
Patent
active
053046773
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.
Kometani Norio
Nakamatsu Toshio
Nishida Yasuhiro
Killos Paul J.
Sumika Fine Chemicals Co., Ltd.
Sumitomo Chemical Company Limited
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