PROCESS FOR THE PREPARATION OF D,L-METHIONINE

PROCESS FOR THE PREPARATION OF D,L-METHIONINE

The invention relates to a single cycle process for preparing D,L-methionine from an alkali methioninate solution obtained by alkaline hydrolysis of 5-(2-methylmercaptoethyl)hydantoin, in which the D,L-methionine is obtained by neutralizing the alkali methioninate solution with carbon dioxide at ele...

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Bibliographische Detailangaben
Hauptverfasser: RENNER, Christian, DE CORTE, Danny, RÜCKRIEGEL, Christian, HASSELBACH, Hans-Joachim, MOUSSALLEM, Imad, WEFER, Johannes, WINKLER, Tobias, DRAPAL, Bernd
Format: Patent
Sprache:eng
Schlagworte:
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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Beschreibung
Zusammenfassung:The invention relates to a single cycle process for preparing D,L-methionine from an alkali methioninate solution obtained by alkaline hydrolysis of 5-(2-methylmercaptoethyl)hydantoin, in which the D,L-methionine is obtained by neutralizing the alkali methioninate solution with carbon dioxide at elevated temperature and subsequently crystallizing D,L-methionine in the presence of seed crystals.