METHOD FOR PRODUCING PURIFIED TEREPHTHALIC ACID

An improved method for producing purified terephthalic acid by catalytic hydrogenation is disclosed. Control of the reduction of colored compounds during the production of purified terephthalic acid is effected by modulating solution hydrogen concentration during hydrogenation.

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Bibliographische Detailangaben
Hauptverfasser:	PACKER, LAWRENCE G, JAMES, DAVID E
Format:	Patent
Sprache:	eng ; kor
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS CHEMISTRY METALLURGY ORGANIC CHEMISTRY
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Beschreibung
Zusammenfassung:	An improved method for producing purified terephthalic acid by catalytic hydrogenation is disclosed. Control of the reduction of colored compounds during the production of purified terephthalic acid is effected by modulating solution hydrogen concentration during hydrogenation.