Method for hydrolysing acetone cyanohydrin

US9458083B2 · kind B2 · utility

Assignee

• Evonik Röhm GmbH · DE

Inventors

• Arndt Selbach · Lechenich, DE
• Lorenza Sartorelli · Ober-Ramstadt, DE
• Andreas Perl · Frankenthal (Pfalz), DE
• Joachim Deinken · Eschborn, DE
• Stefanie Sohnemann · Overath, DE
• Norbert Mnich · Niederrodenbach, DE
• Matthias Groemping · Darmstadt, DE
• Udo Gropp · Bad Endorf, DE
• Thomas Mertz · Bensheim, DE

Key dates

• Filing date: Mar 6, 2013
• Grant date: Oct 4, 2016
• Expiry date: Jun 22, 2033

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J2219/30265
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The present invention relates to a process for hydrolysis of acetone cyanohydrin (ACH) by means of sulphuric acid within the ACH sulpho process for preparation of methacrylic acid (MAA) or methyl methacrylate (MMA).