Patent · US Active

Process for producing methyl methacrylate

US9963417B2 · kind B2 · utility

9Cited by

2References

20Claims

0Family size

Assignee

Evonik Röhm GmbH · DE

Inventors

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

Key dates

Filing date	Dec 11, 2014
Grant date	May 8, 2018
Priority date	—
Expiry date	Dec 16, 2034

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P20/582
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

The present invention relates to a catalytic continuous process for producing methyl methacrylate, said process comprising the step of reacting methacrolein with oxygen and methanol in the presence of a heterogeneous noble-metal-containing catalyst in an oxidative esterification reaction to give methyl methacrylate, characterized in that the stationary concentration of the starting material methacrolein is equal to or less than 12% by weight based on the total weight of the reaction mixture in the reactor, and the ratio F between the total liquid volume within the reactor expressed in liters divided by the total weight of catalyst in the reactor expressed in kilograms is equal to or less than 4.

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