Method for hydrocyanation

US7504529B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Tim Jungkamp · Sandhausen, DE
• Hans-Martin Polka · Mannheim, DE
• Robert Baumann · Mannheim, DE
• Michael Bartsch · Neustadt, DE
• Gerd Haderlein · Bad Kötzting, DE
• Hermann Luyken · Ludwigshafen, DE
• Jens Scheidel · Hirschberg, DE

Key dates

• Filing date: Jan 26, 2005
• Grant date: Mar 17, 2009
• Expiry date: May 4, 2026

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C255/07
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process is described for removing hydrogen cyanide from mixtures comprising pentenenitrile, wherein the removal is effected by an azeotropic distillation of hydrogen cyanide with 1,3-butadiene.