Process for producing bisphenol A

Provided is a production process for high quality bisphenol A which is reduced in a sulfonic acid-containing heavy matter contained in the product and which is improved in a hue. In an after-treating step for a reaction mixed solution obtained by condensing excess phenol with acetone in the presence...

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Bibliographic Details
Main Authors HIRANO KAZUYUKI, FUJIMOTO KEN
Format Patent
LanguageEnglish
Published 26.06.2003
Edition7
Subjects
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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Summary:Provided is a production process for high quality bisphenol A which is reduced in a sulfonic acid-containing heavy matter contained in the product and which is improved in a hue. In an after-treating step for a reaction mixed solution obtained by condensing excess phenol with acetone in the presence of an acid catalyst, a filtering step by a filter is provided at least in one step between a step for dissolving an adduct of bisphenol A and phenol by using a phenol-containing solution and a step for crystallizing and separating the above adduct from this solution.
Bibliography:Application Number: US20020258578