Continuous process for preparing neral in pure or enriched form

US8282793B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Gunnar Heydrich · Schifferstadt, DE
• Nawid Kashani-Shirazi · Ilvesheim, DE
• Christoph Jäkel · Schifferstadt, DE
• Joachim Schmidt-Leithoff · Mannheim, DE

Key dates

• Filing date: Jun 9, 2008
• Grant date: Oct 9, 2012
• Expiry date: Nov 25, 2028

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C45/83
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The present invention relates to a continuous process for preparing neral (cis-citral) in pure or enriched form by distillatively separating neral from substance mixtures comprising essentially neral and geranial (trans-citral). This distillative separation is performed in a dividing wall column or in a connection of two distillation columns in the form of a thermal coupling.