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    PROCESS FOR MAKING 3-PENTENENITRILE BY HYDROCYANATION OF BUTADIENE
    2.
    发明授权
    PROCESS FOR MAKING 3-PENTENENITRILE BY HYDROCYANATION OF BUTADIENE 有权
    用于生产3-戊烯腈的丁二烯HYDROZYANISIERUNG

    公开(公告)号：EP2044007B1

    公开(公告)日：2015-11-18

    申请号：EP07812884.0

    申请日：2007-07-13

    申请人： Invista Technologies S.à.r.l.

    发明人： FOO, Thomas ,  KRISTJANSTDOTTIR, Sigridur, S. ,  MC KINNEY, Ronald, J. ,  OZER, Ron ,  PEARLMAN, Paul, S.

    IPC分类号： C07C253/10 ,  C07C253/30 ,  C07C255/07

    CPC分类号： C07C253/10 ,  C07D221/04 ,  C07C255/07

    摘要： The invention provides a continuous process for the production of 3-pentenenitrile, comprising: (a) contacting, in a reaction zone, a hydrogen cyanide-containing feed, a 1,3-butadiene-containing feed, and a catalyst precursor composition, wherein the catalyst precursor composition comprises a zero-valent nickel and at least one multidentate phosphorus-containing ligand selected from the group consisting of a phosphite, a phosphonite, a phosphinite, a phosphine, and a mixed phosphorus-containing ligand or a combination of such members; and (b) maintaining a residence time sufficient to convert about 95% or more of the hydrogen cyanide and to produce a reaction mixture comprising 3-pentenenitrile and 2-methyl-3-butenenitrile, wherein the 2-methyl-3-butenenitrile concentration is maintained below about 15 weight percent of the total mass of the reaction mixture.