Process for producing methionine

US7119228B2 · kind B2 · utility

Assignee

• Degussa AG · DE

Inventors

• Dieter Buss · Aschaffenburg, DE
• Ron Stockfleth · Bonn, DE
• Martin Körfer · Goldbach, DE
• Jürgen Stock · Frankfurt, DE
• Ralf Goedecke · Rodenbach, DE
• Hans Joachim Hasselbach · Gelnhausen, DE
• Gundolf Hornung · Wesseling, DE

Key dates

• Filing date: Feb 10, 2005
• Grant date: Oct 10, 2006
• Expiry date: Feb 10, 2025

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C319/20
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The present invention is directed to an improved process for producing methionine in which the by-product methionyl-methionine is quickly converted to the product methionine by a hydrolysis reaction. The process is performed at high temperatures (200° C. to 280° C.) and short residence times (20 s to 200 s) and results in an improved yield of end product methionine.