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    PROCESS FOR PRODUCTION OF METHYLENE-BRIDGED POLYPHENYL POLYAMINES
    2.
    发明公开
    PROCESS FOR PRODUCTION OF METHYLENE-BRIDGED POLYPHENYL POLYAMINES 有权
    用于生产亚甲基多苯基多胺

    公开(公告)号：EP2379486A1

    公开(公告)日：2011-10-26

    申请号：EP09764227.6

    申请日：2009-11-26

    申请人： Huntsman International LLC

    发明人： MITCHELL, Christopher, John ,  CORMA CANOS, Avelino ,  CARR, Robert, Henry ,  BOTELLA ASUNCION, Pablo

    IPC分类号： C07C209/60 ,  C07C209/78

    CPC分类号： C07C209/60 ,  C07C209/78 ,  C07C211/50

    摘要： A process for providing methylene-bridged polyphenyl polyamines from aniline and formaldehyde according to the invention comprises the subsequent steps of a) condensing aniline and formaldehyde, providing a condensate, the molar ratio of aniline to formaldehyde being chosen in the range of 2 to 3.5; b) reacting, in a first catalytic reaction step, at a reaction temperature within the range of about 30°C to about 100°C, said condensate over a solid catalyst being chosen from the group consisting of clays, silicates, silica-aluminas and ion exchange resins, whereby an intermediate mixture is provided, the intermediate mixture comprising amino benzyl amines; c) converting, in a subsequent catalytic reaction step, at a temperature within the range of about 70°C to about 250°C, the reaction temperature in said subsequent catalytic reaction step is higher than the reaction temperature in said first catalytic reaction step, said intermediate mixture into methylene-bridged polyphenyl polyamines in presence of a subsequent solid catalyst being chosen from the group consisting of zeolites, delaminated zeolites and ordered mesoporous materials, thereby providing said methylene-bridged polyphenyl polyamines.