Process for preparing cyclododecatriene

US8168841B2 · kind B2 · utility

Assignee

• EVONIK DEGUSSA GMBH · DE

Inventors

• Jurgen Herwig
• Wilhelm Brugging · Recklinghausen, DE
• Martin Roos · Oestrich-Winkel, DE
• Norbert Wilczok · Wiesloch, DE

Key dates

• Filing date: Mar 20, 2007
• Grant date: May 1, 2012
• Expiry date: Mar 18, 2028

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C2601/18
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Preparation of cyclododecatriene in a continuous or discontinuous process by trimerization of butadiene in the presence of a catalyst system and a solvent, the crude cyclododecatriene obtained being able to be isolated by means of distillation. The cyclooctadiene formed as by-product can likewise be isolated from the crude product.