Recovery of aromatic carboxylic acid or ester thereof from residue fraction of oxidation or esterification reaction mixture
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United States of America Patent
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Aug 17, 1982
Issued Date -
N/A
app pub date -
Apr 28, 1980
filing date -
Jan 24, 1977
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Expired
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Abstract
Disclosed is a process for the recovery of aromatic carboxylic acid or ester thereof from the residue fraction of the oxidation or esterification reaction mixture resulting from the oxidation or oxidation and esterification of an aromatic compound having at least one methyl or formyl group directly bonded to a ring carbon atom. The process comprises treating the residue fraction with hydrogen and a hydrogenation catalyst.
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