PROCESS FOR EXTRACTING AROMATIC DICARBOXYLIC ACIDS FROM THEIR METAL SALTS

The present invention relates to a process for extracting aromatic dicarboxylic acids from an outlet stream of a basic depolymerization of polycondensates containing metal carboxylates of the aromatic dicarboxylic acid to be extracted, wherein a mineral or organic acid is added to this outlet stream...

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Bibliographic Details
Main Authors Scholl, Stephan, Brepohl, Esther, Müller, Clemens, Eichert, Carsten, Biermann, Lars
Format Patent
LanguageEnglish
Published 14.03.2024
Subjects
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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Summary:The present invention relates to a process for extracting aromatic dicarboxylic acids from an outlet stream of a basic depolymerization of polycondensates containing metal carboxylates of the aromatic dicarboxylic acid to be extracted, wherein a mineral or organic acid is added to this outlet stream, the pKs value of which acid being greater than or equal to that of the aromatic dicarboxylic acid, on which the polycondensate is based.
Bibliography:Application Number: US202218549762