Process for preparing isophorone in the presence of at least one defoamer in the wastewater column in the workup section

US8884066B2 · kind B2 · utility

Assignee

• EVONIK DEGUSSA GMBH · DE

Inventors

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

Key dates

• Filing date: Apr 25, 2012
• Grant date: Nov 11, 2014
• Expiry date: Apr 25, 2032

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 process for preparing isophorone (3,5,5-trimethyl-2-cyclohexen-1-one) in the presence of at least one defoamer in the wastewater column in the workup section.