Process for the preparation and isolation of carboxylic esters

US9963414B2 · kind B2 · utility

Assignees

• THYSSENKRUPP INDUSTRIAL SOLUTIONS AG · DE
• thyssenkrupp AG · DE

Inventors

• Markus Fritsch · Leipzig, DE
• Armin Börner · Rostock, DE
• Ivan Shuklov · Rostock, DE
• Zeljko Knez · Maribor, SI

Key dates

• Filing date: Dec 5, 2014
• Grant date: May 8, 2018
• Expiry date: Dec 5, 2034

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C12P7/62
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The disclosed methods for preparing and isolating carboxylic esters ensure a high product purity and minimize technical complexity. These methods are based on the reaction of a carboxylic acid with an alcohol in an aqueous medium. In some examples, the alcohol is used both for the esterification and for the precipitation of the salts, preferably ammonium salts, formed in the synthesis.