Method for producing ethylenediamine
    4.
    发明授权
    Method for producing ethylenediamine 有权
    乙二胺的制备方法

    公开(公告)号:US07915454B2

    公开(公告)日:2011-03-29

    申请号:US12529107

    申请日:2008-02-28

    IPC分类号: C07C209/48

    CPC分类号: C07C209/48 C07C211/10

    摘要: The invention relates to a process for preparing ethylenediamine by hydrogenation of aminoacetonitrile over a catalyst, wherein the hydrogenation is carried out in a solution comprising aminoacetonitrile, water in a proportion of from 0 to 60% by weight and a solvent and the aminoacetonitrile comprised in the solution is fed into the reaction vessel at a rate which is not greater than the rate at which the aminoacetonitrile reacts with hydrogen in the hydrogenation.

    摘要翻译: 本发明涉及一种通过氨基乙腈在催化剂上氢化制备乙二胺的方法,其中氢化是在包含氨基乙腈的溶液中,以0至60重量%的比例的水和溶剂和包含在其中的氨基乙腈 溶液以不大于氨基乙腈在氢化中与氢反应的速率进料到反应容器中。

    Method for producing ethyleneamines from untreated AAN
    9.
    发明授权
    Method for producing ethyleneamines from untreated AAN 失效
    从未经处理的AAN生产乙撑胺的方法

    公开(公告)号:US07960590B2

    公开(公告)日:2011-06-14

    申请号:US12529101

    申请日:2008-02-28

    IPC分类号: C07C209/48

    CPC分类号: C07C209/48 C07C211/10

    摘要: The invention relates to a process for preparing an ethylene amine mixture, which comprises the following steps: a) crude AAN which is largely free of formaldehyde cyanohydrin (largely FACH-free) is heated at a temperature of from 50 to 150° C. to give an amino nitrile mixture comprising aminoacetonitrile (AAN) and from 5 to 70% by weight of iminodiacetonitrile (DAN), b) hydrogenation of the amino nitrile mixture obtained in step a) in the presence of a catalyst. Ethylenediamine (EDA) and/or diethylenetriamine (DETA) and also, if appropriate, further ethylene amines can be isolated from the ethylene amine mixtures obtained.

    摘要翻译: 本发明涉及一种制备乙烯胺混合物的方法,其包括以下步骤:a)将大部分不含甲醛氰醇(基本上不含FACH的)的粗AAN在50至150℃的温度下加热至 得到包含氨基乙腈(AAN)和5-70重量%亚氨基二乙腈(DAN)的氨基腈混合物,b)在催化剂存在下氢化步骤a)中得到的氨基腈混合物。 乙二胺(EDA)和/或二亚乙基三胺(DETA)以及如果合适的话,还可以从获得的乙烯胺混合物中分离另外的亚乙基胺。