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

The invention relates to an improved process for preparing 3-aminomethyl-3,5,5-trimethylcyclohexylamine, referred to hereinafter as isophoronediamine or, in abbreviated form, IPDA, by: I. preparation of isophorone by catalyzed aldol condensations with acetone as reactant; II. reaction of isophorone...

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Hauptverfasser: MAIER MARTIN, KNOOP CORD, SCHWARZ MARKUS, HENGSTERMANN AXEL, GRUND GERDA, JANSEN ROBERT, LIPPE JUERGEN, HIRSCH ROLF, STREUKENS GUIDO, ORSCHEL MATTHIAS, HINTON MICHAEL D, ORTELT MARTINA, NITZ JOERG-JOACHIM, LETTMANN CHRISTIAN, RIX ARMIN, GALLE MARKUS, RICHTER NORBERT
Format: Patent
Sprache:eng
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Zusammenfassung:The invention relates to an improved process for preparing 3-aminomethyl-3,5,5-trimethylcyclohexylamine, referred to hereinafter as isophoronediamine or, in abbreviated form, IPDA, by: I. preparation of isophorone by catalyzed aldol condensations with acetone as reactant; II. reaction of isophorone with HCN to form isophoronenitrile (IPN, 3-cyano-3,5,5-trimethylcyclohexanone); III. catalytic hydrogenation and/or catalytic reductive amination (also referred to as aminative hydrogenation) of 3-cyano-3,5,5-trimethylcyclohexanone, hereinafter called isophoronenitrile or, in abbreviated form, IPN, to give the isophoronediamine.