Process for the synthesis of aromatic dicarboxylic acids
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United States of America Patent
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Aug 17, 2021
Grant Date -
Apr 1, 2021
app pub date -
Sep 28, 2019
filing date -
Sep 28, 2019
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Abstract
A method is provided for synthesizing an aromatic carboxylic acid compound comprising providing an aromatic compound or an aromatic compound with at least one carboxylic group; providing a metal hydroxide and at least one carboxylate to produce a mixture; and adding carbon dioxide to the mixture under pressures from about atmospheric to 1000 psig and sufficient heat for a time sufficient to produce aromatic carboxylic acid compounds. The aromatic carboxylic acid compounds may include terephthalic acid, naphthalic acid, thiophene dicarboxylic acid, pyridine dicarboxylic acid, carbazole dicarboxylic acid, and dibenzothiophene dicarboxylic acid.
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