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公开(公告)号:US06504060B1
公开(公告)日:2003-01-07
申请号:US10122769
申请日:2002-04-15
IPC分类号: C07C20400
CPC分类号: C07C209/72 , C07C2601/14 , C07C211/36
摘要: The invention relates to a process for the preparation of diaminodicyclohexylmethane (“PACM”) with a proportion of trans,trans-4,4′-diaminodicyclohexylmethane of from 17 to 24% by hydrogenation of diaminodiphenylmethane (“MDA”) in the presence of a pulverulent catalyst in a continuously operated suspension reactor at a conversion of MDA of at least 95%, based on the amount of MDA used.