Method for producing methylmethacrylate

US10457626B2 · kind B2 · utility

Assignee

• Evonik Röhm GmbH · DE

Inventors

• Steffen Krill · Mühltal, DE
• Torsten Balduf · Pfungstadt, DE
• Martin Koestner · Darmstadt, DE
• Matthias Groemping · Darmstadt, DE
• Alexander Lygin · Griesheim, DE
• Rudolf Burghardt · Darmstadt, DE

Key dates

• Filing date: Oct 16, 2018
• Grant date: Oct 29, 2019
• Expiry date: Oct 16, 2038

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C45/75
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The present invention relates to a process for producing methyl methacrylate, comprising the following steps: A) producing methacrolein and B) reacting the methacrolein obtained in step A) in an oxidative esterification reaction to give methyl methacrylate, characterized in that the two steps A) and B) take place in a liquid phase at a pressure of from 2 to 100 bar, and step B) is carried out in the presence of a heterogeneous noble-metal-containing catalyst comprising metals and/or comprising metal oxides.