PRODUCTION OF HIGH-PURITY P,P'-BIPHENOL

PURPOSE:To obtain the titled compound useful as a starting raw material of plastics, easily, in high purity, with only a simple post-treatment, by debutylating tetrabutylbiphenol in a solvent comprising diphenyl ether having high boiling point. CONSTITUTION:Tetrabutylbiphenol (3,3',5,5'-te...

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Bibliographic Details
Main Authors SHIBATA KATSUMASA, KAWAHARA MIKIO
Format Patent
LanguageEnglish
Published 05.02.1985
Subjects
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
THEIR RELEVANT APPARATUS
TRANSPORTING
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Summary:PURPOSE:To obtain the titled compound useful as a starting raw material of plastics, easily, in high purity, with only a simple post-treatment, by debutylating tetrabutylbiphenol in a solvent comprising diphenyl ether having high boiling point. CONSTITUTION:Tetrabutylbiphenol (3,3',5,5'-tetra-t-butyl-4,4'-dioxybiphenyl) is debutylated in diphenyl ether solvent optionally in the presence of butylated diphenyl ether produced by the debutylation reaction. The objective compound useful especially as a raw material of heat-resistant resins can be produced in the form of highly pure glossy white crystal, only by filtering, washing with toluene, and drying the p,p'-biphenol crystallized in the above process. EFFECT:Since the solvent easily dissolves the debutylation catalyst, the catalyst can be separated without using particular treatment, and the filtrate can be used repeatedly as the solvent for the next reaction.
Bibliography:Application Number: JP19830130345