中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

5 records (took 0.023 seconds)

    HYDROCYANATION PROCESS WITH REDUCED YIELD LOSSES
    4.
    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

    Applicant: Invista Technologies S.à.r.l.

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

    IPC: C07C253/10 ,  C07C255/04

    CPC classification number: C07C253/10 ,  C07C255/04

    Abstract: 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.

    PROCESS FOR MAKING 3-PENTENENITRILE BY HYDROCYANATION OF BUTADIENE
    5.
    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

    Applicant: Invista Technologies S.à.r.l.

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

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

    CPC classification number: C07C253/10 ,  C07D221/04 ,  C07C255/07

    Abstract: 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.

Patent Agency Ranking