METHOD OF PRODUCTION FOR 4,4'-DIHYDROXY-DIPHENYL ETHER

METHOD OF PRODUCTION FOR 4,4'-DIHYDROXY-DIPHENYL ETHER

PROBLEM TO BE SOLVED: To provide a method of production for 4,4'-dihydroxy-diphenyl ethers in high selectivity and high yield by using a repeatedly usable catalyst in dehydrative dimerization of hydroquinones in a solvent in the presence of the catalyst. SOLUTION: The method of production for 4...

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Bibliographische Detailangaben
Hauptverfasser: UOHAMA MISAO, MIZUNO TAKEHISA, ODAJIMA TAKAYUKI
Format: Patent
Sprache:eng
Schlagworte:
ACYCLIC OR CARBOCYCLIC COMPOUNDS
APPARATUS THEREFOR
CHEMISTRY
GENERAL METHODS OF ORGANIC CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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Zusammenfassung:PROBLEM TO BE SOLVED: To provide a method of production for 4,4'-dihydroxy-diphenyl ethers in high selectivity and high yield by using a repeatedly usable catalyst in dehydrative dimerization of hydroquinones in a solvent in the presence of the catalyst. SOLUTION: The method of production for 4,4'-dihydroxydiphenyl ethers by dehydrative dimerization of the hydroquinones in the presence of the catalyst in the solvent, repeatedly uses a heteropolyacid and/or its acidic metal salt supported on a carrier as the catalyst. COPYRIGHT: (C)2004,JPO