Evonik Degussa Gmbh

Alexander Martin Ruefer

Stephan Kohlstruk

Monika Berweiler

Anne Rittsteiger

Guido Streukens

Sven Schneider

Sabrina Sowka

Norbert Schlueter

Stefan Roeder

Isophoronediamine, is prepared by A) subjecting isophoronenitrile directly in one stage to aminating hydrogenation to give isophoronediamine in the presence of ammonia, hydrogen, a hydrogenation catalyst and an optional additive, and in the presence or absence of an organic solvent; or B) first converting isophoronenitrile fully or partly in at least two or more than two stages to isophoronenitrile imine, and subjecting the isophoronenitrile imine to aminating hydrogenation to give isophoronediamine as a pure substance or in a mixture with another component and/or isophoronenitrile, in the presence of at least ammonia, hydrogen and a catalyst.

Process for preparing 3-aminomethyl-3,5,5-trimethylcyclohexylamine

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Recklinghausen, Germany

Alexander Martin Ruefer