Method for manufacturing ether polycarboxylic acids

Method for manufacturing ether polycarboxylic acids

A process for the production of ether polycarboxylic acids comprising reacting alkali metal salts of ether carboxylic acids with carbon dioxide in the presence of (1) an alkali metal alcoholate and (2) optionally, heavy metal catalysts and inert diluents at temperatures of 200 DEG C to 350 DEG C und...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: TISCHBIREK, GUNTHER, KRAUSE, HORST-JURGEN
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:A process for the production of ether polycarboxylic acids comprising reacting alkali metal salts of ether carboxylic acids with carbon dioxide in the presence of (1) an alkali metal alcoholate and (2) optionally, heavy metal catalysts and inert diluents at temperatures of 200 DEG C to 350 DEG C under pressure, acidify the resulting alkali metal salt of an ether polycarboxylic acid and recovering the ether polycarboxylic acid.