A PROCESS FOR THE RECOVERY OF LACTIC ACID

A PROCESS FOR THE RECOVERY OF LACTIC ACID

The invention provides a process for the recovery of purified lactic acid values from an aqueous feed solution containing lactic acid, lactic acid salt, or mixtures thereof, comprising: bringing the feed solution into contact with a substantially immiscible anion exchanger to form a substantially wa...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: MCWILLIAMS, PAUL, GRUBER, PATRICK, R, WITZKE, DAVID, R, EYAL, AHARON, MEIR
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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Beschreibung
Zusammenfassung:The invention provides a process for the recovery of purified lactic acid values from an aqueous feed solution containing lactic acid, lactic acid salt, or mixtures thereof, comprising: bringing the feed solution into contact with a substantially immiscible anion exchanger to form a substantially water-immiscible phase comprising an anion exchanger-lactic acid adduct; effecting a condensation reaction in the substantially water-immiscible phase between a carboxylic moiety of the lactic acid adduct and a moiety selected from a hydroxyl moiety and a primary or secondary amine moiety to respectively form a lactic acid ester or amine product; and separating the formed lactic acid product from the anion exchanger.