| 摘要 |
1. Process for the catalytic hydrogenation of di-(4-aminophenyl)methane to give a liquid di-(4-aminocyclohexyl)methane containing 15 to 40% by weight of the trans,trans isomer, characterised in that di-(4-aminophenyl)methane is hydrogenated in the presence of a supported rhodium catalyst under a hydrogen pressure of 137.9 to 551.6 bar (2,000 to 8,000 psi) and at a temperature of 196 to 235 degrees C. |
