25.
    发明专利
    未知

    公开(公告)号:BR0114273A

    公开(公告)日:2003-08-26

    申请号:BR0114273

    申请日:2001-09-25

    Applicant: BASF AG

    Abstract: A process is provided for the distillative separation of pentene nitrile isomers which have a relative volatility alpha ranging from 1.0 to 1.3 in the pressure range from 1 to 500 kPa, wherein the distillation is carried out in the presence of a liquid diluent which forms with the pentene nitrile isomers, under the same pressure conditions, azeotropes whose relative volatility alpha is higher than that of the pentene nitrile isomers to be separated.

    CATALYST SYSTEM CONTAINING NI(0) FOR HYDROCYANATION

    公开(公告)号:CA2454912A1

    公开(公告)日:2003-02-13

    申请号:CA2454912

    申请日:2002-07-16

    Applicant: BASF AG

    Abstract: A catalyst system containing a) Ni (0), b) 4 -10 mol per mol Ni (0) accordin g to a) a compound (I) of formula P (X1R1) (X2R2) (X3R3) (I) wherein X1, X2, X 3 independently represent oxygen or a single bond R1, R2, R3 represent independently, the same or different organic radicals, and c) 1 -4 mol per m ol Ni (0) according to a) a compound (II) of formula (II) wherein X11, X12, X13 , X21, X22, X23 independnetly represent oxygen or a single bond, R11, R12 independently represent the same or different individual or bridged organic radicals, R21, R22 independently represent the same or different, individual or bridged organic radicals, Y represents a bridge group. The invention also relates to a method for the production of mixtures of monoolefin C5- mononitrils with a n-conjugated C=C and C=N bond by hydrocyanation of a hydrocarbon mixture containing 1,3-butadiene in the presence of at least one such system and to a method for the production of a dinitrile by hydrocyanation of a mixture of monoolefin C5-mononitriles with a non- conjugated C=C- and C=N bond in the presence of at least one such system.

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