Patent · US Active

DMAPN having a low DGN content and a process for preparing DMAPA having a low DGN content

US8710269B2 · kind B2 · utility

0Cited by

5References

18Claims

0Family size

Assignee

BASF SE

Inventors

Wolfgang Mägerlein · Mannheim, DE
Jan Eberhardt · Mannheim, DE
Johann-Peter Melder · Schifferstadt, DE
Ulrich Kohler · Mannheim, DE
Thilo Hahn · Kirchheimbolanden, DE
Mirko Kreitschmann · Mannheim, DE
Dominik Herbrecht · Heidelberg, DE

Key dates

Filing date	Jul 27, 2011
Grant date	Apr 29, 2014
Priority date	—
Expiry date	Aug 15, 2031

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C255/25
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

The present invention relates to a process for preparing 3-dimethylaminopropylamine (DMAPA) by reacting 3-dimethylaminopropionitrile (DMAPN) with hydrogen in the presence of a catalyst, wherein the DMAPN used has a content of 2-(dimethylaminomethyl)glutaronitrile (DGN) of 300 ppm by weight or less, based on the DMAPN used.Furthermore, the present invention relates to mixtures of DMAPN and DGN, wherein the weight ratio of DMAPN to DGN is in the range from 1 000 000:5 to 1 000 000:250.

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