PRODUCTION OF 4,4'-DIPHENYLDICARBOXYLIC ACID AND/OR MONO OR DIMETHYL ESTER THEREOF

PURPOSE:To obtain the titled compound useful as fiber, film, plasticizer, resin, etc., in high yield, by contacting 4,4'-diethyldiphenyl with a gas containing molecular oxygen in liquid phase in the presence of methanol. CONSTITUTION:The objective compound can be produced by oxidizing 4,4'...

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Bibliographische Detailangaben
Hauptverfasser:	NAMATAME AKIO, AMAMIYA TAMIRO
Format:	Patent
Sprache:	eng
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS APPARATUS THEREFOR CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY GENERAL METHODS OF ORGANIC CHEMISTRY METALLURGY ORGANIC CHEMISTRY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	PURPOSE:To obtain the titled compound useful as fiber, film, plasticizer, resin, etc., in high yield, by contacting 4,4'-diethyldiphenyl with a gas containing molecular oxygen in liquid phase in the presence of methanol. CONSTITUTION:The objective compound can be produced by oxidizing 4,4'- diethyldiphenyl with a molecular oxygen-containing gas using a catalyst containing at least a manganese compound (preferably a mixture with a cobalt compound or a nickel compound) in the absence of solvent or in a solvent exhibiting liquid state under the reaction condition (e.g. carboxylic acid ester) in the presence of methanol under total pressure of atmospheric pressure - 250kg/cm G and an oxygen partial pressure of 0.2-50kg/cm G, preferably 0.2-10 kg/cm G at 200-300 deg.C.