Process for preparing an ester by alkoxycarbonylation

US11365171B2 · kind B2 · utility

Assignee

• Evonik Operations GmbH · DE

Inventors

• Peter Kucmierczyk · Herne, DE
• Robert Franke · Marl, DE
• Dirk Fridag · Haltern am See, DE
• Johannes Knossalla · Gahlen, DE
• Marc Schäpertöns · Recklinghausen, DE
• Frederik Gluth · Mülheim an der Ruhr, DE

Key dates

• Filing date: Jun 5, 2020
• Grant date: Jun 21, 2022
• Expiry date: Jun 5, 2040

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C67/56
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The invention relates to a process for preparing an ester by alkoxycarbonylation of a C2 to C20 hydrocarbon having at least one multiple bond, preferably having at least one olefinic double bond, in which the homogeneous catalyst system used is separated from the product mixture by means of membrane separation and recycled into the reaction zone. In a development of the present invention, the ester thus formed is converted into another ester by transesterification.