Method for producing isophorone

US8889914B2 · kind B2 · utility

Assignee

• EVONIK DEGUSSA GMBH · DE

Inventors

• Matthias Orschel · Munster, DE
• Robert Jansen · Collinsville, US
• Martin Maier · Asperg, DE
• Gerda Grund · Coesfeld, DE
• Markus Schwarz · Haltern am See, DE
• Joerg-Joachim Nitz · Essen, DE
• Axel Hengstermann · Senden, DE

Key dates

• Filing date: Nov 17, 2011
• Grant date: Nov 18, 2014
• Expiry date: Nov 17, 2031

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/582
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to a method for producing isophorone by catalyzed aldol condensation of acetone as an educt, reprocessing the reaction product, hydrolyzing the product stream, and separating into an organic and an aqueous fraction, obtaining isophorone from the organic fraction, distillatively reprocessing the aqueous fraction, and feeding the vapors from the head of the distillative reprocessing apparatus into the hydrolysis apparatus.