Patent · US Active

Process for preparing methionine

US10800736B2 · kind B2 · utility

1Cited by

6References

7Claims

0Family size

Assignee

Evonik Operations GmbH · DE

Inventors

Daniel Fischer · Midlothian, US
Patrik Stenner · Hanau, DE
Sebastian Bernhardt · Munich, DE
Harald Jakob · Hasselroth, DE

Key dates

Filing date	May 9, 2018
Grant date	Oct 13, 2020
Priority date	—
Expiry date	May 9, 2038

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C323/58
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

A process is used for preparing methionine. Specifically, the process includes the hydrolysis of 5-(2-methylmercaptoethyl)hydantoin (methionine hydantoin) in an alkaline process solution. Further, the by-products that include formate and other anions of organic acids containing 1 to 5 carbon atoms are removed by electrodialysis of the process solution.

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