Process for the isolation of vinyl acetate by distillation

US5066365A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Gunter Roscher · Kelkheim, DE
• Karl-Heinz Schmidt · Waldkraiburg, DE
• Klaus Eichler · Laufenburg (Baden), DE
• Peter Horstermann · Lechenich, DE
• Reinhard Gradl · Hürth, DE
• Horst Langner · Hattersheim, DE

Key dates

• Filing date: Oct 15, 1990
• Grant date: Nov 19, 1991
• Expiry date: Oct 15, 2010

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S203/20
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to a process for the isolation of vinyl acetate which involves not combining the bottom product of the recylced gas washings with the water-saturated vinyl acetate but rather introducing it to further multiple distillation columns from the gas mixture formed in the reaction of ethylene with acetic acid and oxygen over catalysts containing palladium or palladium compounds in the gas phase.