Catalytic hydrogenation of di(4-aminophenyl) methane

Details Catalytic hydrogenation of di(4-aminophenyl) methane Catalytic hydrogenation of di(4-aminophenyl) methane

B - Operations, Transporting

01

J

260/605.7

B01J 27/24 (2006.01) B01J 27/02 (2006.01)

Patent

CA 1207342

CATALYTIC HYDROGENATION OF DI(4-AMINOPHENYL)METHANE ABSTRACT OF THE DISCLOSURE The present invention is directed to a process for the catalytic hydrogenation of di(4-aminophenyl)- methane to a liquid di(4-aminocyclohexyl)methane containing from 15 to 40% by weight of the trans,trans isomer comprising hydrogenating di(4-aminophenyl)methane at a hydrogen pressure of at least 500 psi and at a temperature of from 100 to 300°C, in the presence of a ruthenium catalyst supported on an inert carrier, said catalyst being moderated with from 65 to 700% by weight, based on the weight of the ruthenium of a compound selected from the group consisting of nitrates and sulfates of alkali metals and alkaline earth metals.

440178

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