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US 10,519,096 B2Granted
Process for preparing amino compounds from nitrile compounds
AssigneeEvonik Degussa GmbH
InventorsAnne Rittsteiger, Stephan Kohlstruk, Dirk Hoppe, Alexander Martin Rüfer, Sabrina Sowka, Sven Schneider, Norbert Schlüter, Axel Hengstermann, Markus Galle, Stefan Röder, Monika Berweiler
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Abstract
The present invention relates to a process for hydrogenating nitrile compounds to amino compounds, in which the cross-sectional loading of the reactor during the hydrogenation is less than or equal to 4.0 kg/m2*s, based on the liquid phase.
Claims20
A process for hydrogenating nitrile compounds to amino compounds, wherein the process is selected from the group consisting of
- (a) hydrogenating a mixture in the ratio of from 50:50 to 70:30 of 2,4,4-trimethylhexamethylenedinitrile and 2,2,4-trimethylhexamethylenedinitrile to form a mixture consisting of 2,4,4-trimethylhexamethylenediamine and 2,2,4-trimethylhexamethylenediamine;
- (b) hydrogenating an isophoronenitrile to an isophoronediamine;
- and
- (c) hydrogenating an isophoronenitrile imine to an isophoronediamine,
- wherein the cross-sectional loading of a tubular reactor during the hydrogenation is from 0.01 kg/m2*s to 4.0 kg/m2*s, based on the liquid phase.
2 more elements
Dependencies are inferred from the claim text.