Method for the conversion of methylmercaptopropionaldehyde formed from crude acrolein and crude methyl mercaptan

US9029597B2 · kind B2 · utility

Assignee

• EVONIK DEGUSSA GMBH · DE

Inventors

• Martin Steffan · Darmstadt, DE
• Hans Joachim Hasselbach · Gelnhausen, DE
• Martin Koerfer · Alzenau, DE
• Harald Jakob · Hasselroth, DE
• Jignesh Gangadwala · Mobile, US

Key dates

• Filing date: Aug 29, 2012
• Grant date: May 12, 2015
• Expiry date: Mar 9, 2033

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/10
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A reactive rectification column suitable for the production of 2-hydroxy-4-methylmercaptobutyric acid and/or methionine contains a weir having a height of 100 mm or more.