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    PROCESS FOR MAKING 3-PENTENENITRILE BY HYDROCYANATION OF BUTADIENE
    1.
    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.

    HYDROCYANATION PROCESS WITH REDUCED YIELD LOSSES
    9.
    发明授权
    HYDROCYANATION PROCESS WITH REDUCED YIELD LOSSES 有权
    氰化收益减少损失的

    公开(公告)号：EP2046729B1

    公开(公告)日：2010-09-22

    申请号：EP07812878.2

    申请日：2007-07-13

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

    发明人： FOO, Thomas ,  GARNER, James, Michael ,  OZER, Ron ,  PEARLMAN, Paul, S.

    IPC分类号： C07C253/10 ,  C07C255/04

    CPC分类号： C07C253/10 ,  C07C255/04

    摘要： The invention provides a hydrocyanation process for the production of adiponitrile and other dinitriles having six carbon atoms, the process comprising: a) forming a reaction mixture in the presence of at least one Lewis acid, said reaction mixture comprising ethylenically unsaturated nitrites having five carbon atoms, hydrogen cyanide, and a catalyst precursor composition, by continuously feeding ethylenically unsaturated nitrites, hydrogen cyanide, and a catalyst precursor composition; b) controlling X and Z, wherein X is the overall feed molar ratio of 2-pentenenitriles to all unsaturated nitrites and Z is the overall feed molar ratio of hydrogen cyanide to all unsaturated nitrites, by selecting a value for X in the range from about 0.001 to about 0.5, and a value for Z in the range from about 0.5/1 to about 0.99/1, such that the value of quotient Q, Formula (I), wherein Q is in the range from about 0.2 to about 10, wherein 3PN is 3- pentenenitriles and 4PN is 4-pentenenitrile; and c) withdrawing a reaction product mixture comprising adiponitrile; wherein the ratio of the concentration of 2-pentenenitriles to the concentration of 3-pentenenitriles in the reaction mixture is from about 0.2/1 to about 10/1; wherein the catalyst precursor composition comprises a zero-valent nickel and at least one multidentate phosphorus-containing ligand; wherein the multidentate phosphorus-containing ligand is 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 wherein the multidentate phosphorus-containing ligand gives acceptable results according to at least one protocol of the 2- Pentenenitrile Hydrocyanation Test Method.