Process for the preparation of 4,4'-diaminodiphenyl-methane and its
derivatives
    8.
    发明授权
    Process for the preparation of 4,4'-diaminodiphenyl-methane and its derivatives 失效
    4,4'-二氨基二苯基甲烷及其衍生物的制备方法

    公开(公告)号:US5241119A

    公开(公告)日:1993-08-31

    申请号:US595665

    申请日:1990-10-11

    IPC分类号: B01J29/04

    CPC分类号: B01J29/04 Y02P20/582

    摘要: Process for the preparation of 4,4'-diaminodiphenylmethane and its derivatives.4,4'-diaminodiphenylmethane and its derivatives are prepared by the condensation of aniline, or its derivative, and aldehyde, or its precursor and/or isomerization of appropriate intermediate products. The reaction proceeds with zeolites acting as catalysts; these catalysts, which are selected in accordance with the reaction to be effected, are preferably zeolites based on Si, Al and B; Si, Al and Ti; Ti and Fe; ZSM-5; or Y zeolites.

    摘要翻译: 制备4,4'-二氨基二苯甲烷及其衍生物的方法。 4,4'-二氨基二苯基甲烷及其衍生物通过苯胺或其衍生物与醛或其前体的缩合和/或合适的中间产物的异构化来制备。 反应进行作为催化剂的沸石; 根据要进行的反应选择的这些催化剂优选基于Si,Al和B的沸石; Si,Al和Ti; Ti和Fe; ZSM-5; 或Y沸石。