Patent · US Active

Method for purifying methacrylic acid

US8389762B2 · kind B2 · utility

0Cited by

4References

20Claims

0Family size

Assignee

Evonik Röhm GmbH · DE

Inventors

Udo Gropp · Bad Endorf, DE
Stefanie Sohnemann · Overath, DE
Guido Protzmann · Bensheim, DE
Thomas Mertz · Bensheim, DE

Key dates

Filing date	Jan 13, 2009
Grant date	Mar 5, 2013
Priority date	—
Expiry date	Dec 1, 2029

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C51/48
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

The present invention relates to a process for purifying methacrylic acid, wherein the reaction mixture obtained by a reaction of methacrylamide with water is cooled by mixing with an aqueous medium and then passed into a phase separator.The present invention further describes a system for performing the process according to the invention.

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