Patent · US Active

Method for producing methacrolein and the conditioning/draining thereof for direct oxidative esterification

US9580374B2 · kind B2 · utility

4Cited by

3References

16Claims

0Family size

Assignee

Evonik Röhm GmbH · DE

Inventors

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

Key dates

Filing date	Aug 27, 2014
Grant date	Feb 28, 2017
Priority date	—
Expiry date	Aug 27, 2034

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C67/54
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

The present invention relates to a process for preparing methyl methacrylate by direct oxidative esterification of methacrolein and the preparation of methacrolein. It is a feature of this novel process that it was possible to distinctly increase the yield and the efficiency of the process compared to the prior art through a sequence of different distillation steps.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.