DMAPN Having a Low DGN Content and a Process for Preparing DMAPA from DMAPN Having a Low DGN Content

摘要

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.