Process for the preparation of esters

US5177229A · kind A · utility

Assignee

• Huls Aktiengesellschaft · DE

Inventors

• John Kahsnitz · Haltern, DE
• Alfred Oberholz · Marl, DE
• Udo Knippenberg · Marl, DE
• Michael Zolffel · Marl, DE

Key dates

• Filing date: Jul 10, 1991
• Grant date: Jan 5, 1993
• Expiry date: Jul 10, 2011

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C67/08
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Alcohols and acids are esterified by means of liquid-phase equilibrium reactions on ion exchangers in an apparatus comprising a prereactor and a rectifying column with external reactors. The process is characterized by the fact that a portion of one of the starting compounds is fed directly to the external reactors.