Patent · US Active

Fine purification of isophoronenitrile by melt crystallization

US9878979B2 · kind B2 · utility

6Cited by

3References

9Claims

0Family size

Assignee

EVONIK DEGUSSA GMBH · DE

Inventors

Joerg-Joachim Nitz · Essen, DE
Stephan Kohlstruk · Marl, DE
Robert Jansen · Collinsville, US
Anja Mueller · Dortmund, DE
Jan Cassens · Recklinghausen, DE
Axel Hengstermann · Senden, DE

Key dates

Filing date	Nov 25, 2016
Grant date	Jan 30, 2018
Priority date	—
Expiry date	Nov 25, 2036

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C2601/14
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

The present invention relates to the fine purification of isophoronenitrile (IPN) by melt crystallization.

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