Method for the production of mixtures containing tertiary isononanoic acids based on 2-ethylhexanol

US9695100B1 · kind B1 · utility

Assignee

• OXEA GMBH · DE

Inventors

• Kristina Kockrick · Düsseldorf, DE
• Leif Johnen · Voerde, DE
• Heinz Strutz · Usingen, DE

Key dates

• Filing date: Jun 26, 2015
• Grant date: Jul 4, 2017
• Expiry date: Jun 26, 2035

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C53/128
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process for producing a mixture comprising tertiary isononanoic acids proceeding from 2-ethylhexanol is characterized in that 2-ethylhexanol is (a) reacted at a temperature of 0° C. to 40° C. with a mixture of concentrated formic acid and a concentrated Brønsted acid, wherein 2 to 10 mol of formic acid are used per mole of 2-ethylhexanol and the concentrated Brønsted acid is used in an amount that corresponds to 6 to 90 mol of protons per mole of 2-ethylhexanol. The resulting reaction mixture from step (a) is subsequently (b) brought into contact with water, and the mixture comprising tertiary isononanoic acids formed according to step b) is removed.