DMAPN having a low DGN content and a process for preparing DMAPA having a low DGN content
AssigneeBASF SE
InventorsWolfgang Mägerlein, Jan Eberhardt, Johann-Peter Melder, Ulrich Köhler, Thilo Hahn, Mirko Kreitschmann, Dominik Herbrecht
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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.
Claims18
A process for preparing 3-dimethylaminopropylamine (DMAPA) by reacting 3-dimethylaminopropionitrile (DMAPN) with hydrogen in the presence of a catalyst, wherein the DMAPN used applied in form of 2-(dimethylaminomethyl)glutaronitrile (DGN) free DMAPN or a mixture comprising DMAPN and DGN with a content of DGN of 300 ppm by weight or less, based on the DMAPN used.
A process for preparing 3-dimethylaminopropylamine (DMAPA) which comprises reacting a mixture of 3-dimethylaminopropionitrile (DMAPN) which contains 2-(dimethylaminomethyl)glutaronitrile (DGN) in an amount of 300 ppm by weight or less based on the DMAPN used with hydrogen in the presence of a catalyst.
Dependencies are inferred from the claim text.