PROCESS FOR PREPARING METHIONINE

PROCESS FOR PREPARING METHIONINE

The present invention relates to a process for preparing methionine, comprising the alkaline hydrolysis of 5-(2-methylmercaptoethyl)-hydantoin (methionine hydantoin) in an aqueous process solution comprising alkali metal hydroxide and/or alkali metal carbonate and/or alkali metal hydrogencarbonate w...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: KAISER, Christian, JAKOB, Harald, HASSELBACH, Hans Joachim, BERNHARDT, Sebastian, KÖRFER, Martin, DRAPAL, Bernd, REICHERT, Stefan, HARTONO, Benny, PETER, Rainer
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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Beschreibung
Zusammenfassung:The present invention relates to a process for preparing methionine, comprising the alkaline hydrolysis of 5-(2-methylmercaptoethyl)-hydantoin (methionine hydantoin) in an aqueous process solution comprising alkali metal hydroxide and/or alkali metal carbonate and/or alkali metal hydrogencarbonate wherein the alkali metal cations in the process solution are potassium and sodium having a K/Na molar ratio range from 99/1 to 20/80 and to an aqueous fertilizer resulting from this process.