Patent · US Active

Storage-stable 2-hydroxy-4-(methylthio)butyronitrile

US8546601B2 · kind B2 · utility

3Cited by

4References

22Claims

0Family size

Assignee

EVONIK DEGUSSA GMBH · DE

Inventors

Dieter Buss · Aschaffenburg, DE
Martin Steurenthaler · Singapore, SG
Joachim Hans Hasselbach · Gelnhausen, DE
Michael R. Rinner · Singapore, SG
Benjamin Fonfe · Frankfurt, DE
Martin Koerfer · Alzenau, DE
Stephan Kretz · Bad Orb, DE

Key dates

Filing date	Feb 22, 2012
Grant date	Oct 1, 2013
Priority date	—
Expiry date	Mar 25, 2032

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C319/26
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

A storage stable mixture containing 86 to 97% by weight of 2-hydroxy-4-methylthiobutyronitrile, 2 to 14% by weight of water, 0.05 to 0.5% by weight of HCN and having a pH of 1 to 4, measured using a pH electrode at 23° C. is provided. A method to produce the storage stable mixture and its use in manufacture of DL-methionine or 2-hydroxy-4-methylthiobutyric acid is also provided.

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