Process for preparing a mixture of amino-methyl-cyclohexanes...

Details Process for preparing a mixture of amino-methyl-cyclohexanes... Process for preparing a mixture of amino-methyl-cyclohexanes...

C - Chemistry, Metallurgy

07

C

C07C 211/34 (2006.01) C07C 209/72 (2006.01)

Patent

CA 2201236

For the continuous preparation of a mixture of amino-methyl-cyclohexanes and diamino-methyl-cyclohexanes by catalytic hydrogenation of diamino-toluenes with hydrogen at temperatures of from 150 to 260~C and an H2 pressure of from 20 to 500 bar, use is made of reduced support-free catalysts which are produced from pressed powders of cobalt, manganese, copper and alkaline earth metal (hydr)oxides, with or without a content of at least one (hydr)oxide of metals oftransition group V and/or VI of the Periodic Table of the Elements (Mendeleev).

Préparation en continu d'un mélange d'aminométhylcyclohexanes et de diaminométhylcyclohexanes par hydrogénation catalytique de diaminotoluènes avec de l'hydrogène à des températures allant de 150 à 260 °C et à une pression de H2 de 20 à 500 bars; on utilise des catalyseurs réduits sans support, produits à partir de poudres compactes d'hydroxydes de métaux alcalino-terreux, de cobalt, de manganèse et de cuivre, avec ou sans au moins un hydroxyde d'un métal de transition des groupes V et (ou) VI du Tableau périodique des éléments (Mendeléeff).

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