Production by distillation of acetone cyanhydrin and method for producing methacrylic ester and subsequent products

US8143434B2 · kind B2 · utility

Assignee

• Evonik Röhm GmbH · DE

Inventors

• Udo Gropp · Bad Endorf, DE
• Robert Weber · Fullerton, US
• Thomas Schaefer · Liestal, CH
• Andreas Perl · Frankenthal (Pfalz), DE
• Rudolf Sing · Worms, DE
• Thomas Mertz · Bensheim, DE

Key dates

• Filing date: Aug 31, 2007
• Grant date: Mar 27, 2012
• Expiry date: Mar 30, 2028

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C231/14
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The present invention relates in general terms to a process for preparing acetone cyanohydrin, comprising as steps: