111.
    发明专利
    未知

    公开(公告)号:DE10317929A1

    公开(公告)日:2004-11-11

    申请号:DE10317929

    申请日:2003-04-17

    Applicant: BASF AG

    Abstract: A process for dewatering hydrocyanic acid by distillation, which includes distilling crude hydrocyanic acid containing from 50 to 99.9% by weight of HCN, from 0.1 to 40% by weight of water, from 0 to 15% by weight of carbon oxides and optionally from 0.01 to 1% by weight of an involatile stabilizer, at a pressure of from 1 bar to 2.5 bar, a bottom temperature of from 100° C. to 130° C. and a top temperature of from 25° C. to 54° C., in the absence of a volatile stabilizer, in a distillation column to obtain a top draw stream containing purified, anhydrous hydrocyanic acid and carbon oxides and a bottom draw stream including water and, optionally, the involatile stabilizer.

    Recovery of a Lewis acid from a reaction mixture, prepared by hydrocyanation of an olefinically unsaturated compound to form a nitrile, comprises phase separation and distillation

    公开(公告)号:DE10240012A1

    公开(公告)日:2004-03-11

    申请号:DE10240012

    申请日:2002-08-27

    Applicant: BASF AG

    Abstract: A process for the recovery of a Lewis acid from a reaction mixture prepared by hydrocyanation of an olefinically unsaturated compound to form a nitrile that under certain conditions of quantities, pressure and temperature exhibit a miscibility gap with water, in the presence of a catalyst system containing a Lewis acid and a complex compound comprises phase separation and distillation. A process for the recovery of a Lewis acid from a reaction mixture (I), prepared by hydrocyanation of an olefinically unsaturated compound to form a nitrile that under certain conditions of quantities, pressure and temperature exhibit a miscibility gap with water, in the presence of a catalyst system containing a Lewis acid and a complex compound comprising a phosphorous containing ligand and a central atom is characterized in that: (a) the complex compound is separated from the mixture (I) to yield a mixture (II); (b) mixing of the mixture (II) with water under pressure and temperature to form a phase (III) that contains a higher water content than the nitrile and a phase (IV) having a higher nitrile content than water whereby the phase (III) has a higher content of Lewis acid than phase (IV); (c) mixing of the phase (III) with a liquid diluent (V) that does not form an azeotrope with water and whose b.pt. is higher than that of water or under certain conditions of pressure forms an azeotrope or a heteroazeotrope with water; (d) distillation of the mixture of (III) and (V) to yield a mixture (VI) having a higher water content than the diluent (V) and a mixture (VII) having a higher diluent (V) content than water whereby the mixture (VII) has a higher Lewis acid content than the mixture (VI) and; (e) addition of the mixture (VII) to a hydrocyanation of an olefinically unsaturated compound to form a nitrile that under certain conditions of quantities, pressure and temperature exhibit a miscibility gap with water, in the presence of a catalyst system containing a Lewis acid and a complex compound comprising a phosphorous containing ligand and a central atom.

    PHOSPHITES
    117.
    发明专利

    公开(公告)号:CA2389608A1

    公开(公告)日:2001-05-25

    申请号:CA2389608

    申请日:2000-10-25

    Applicant: BASF AG

    Abstract: The invention relates to phosphites of the formula (I) P (O-R1)x (O-R2)y (O- R3)z (O-R4)p where R1= an aromatic group with a C1-C18-alkyl substituent ort ho to the O atom, or an aromatic substituent ortho to the O atom, or a fused aromatic system ortho to the O atom; R2= an aromatic group with a C1-C18 alk yl substituent meta to the O atom, or an aromatic substituent meta to the O ato m, or a fused aromatic system meta to the O atom, whereby the aromatic residue ortho to the O atom has a hydrogen atom; R3 = an aromatic group with a C1-C1 8 alkyl substituent para to the O atom, or an aromatic substituent para to the O atom, whereby the aromatic group ortho to the O atom has a hydrogen atom; R4 = an aromatic group with substituents ortho, meta and para to the o atom which are different to those defined for R1, R2 and R3, whereby the aromatic group ortho to the O atom has a hydrogen atom; x = 1 or 2; y, z and p, independent of each other = 0, 1 or 2 with the proviso, that x+y+z+p =3.

    PROCEDIMIENTO PARA LA OBTENCION DE 2,2'-DIHIDROXIBIFENILENO.

    公开(公告)号:ES2284020T3

    公开(公告)日:2007-11-01

    申请号:ES04739502

    申请日:2004-06-02

    Applicant: BASF AG

    Abstract: Procedimiento para la obtención de un 2, 2''-dihidroxibifenilo mediante copulado por oxidación de dos moléculas de fenol, que presentan un átomo de hidrógeno en una posición o, por medio de un peróxido en presencia de agua a una temperatura en el intervalo de 0ºC a 100ºC, caracterizado porque la obtención se lleva a cabo en presencia de un polímero insoluble en agua, que contiene a) un 0, 1 a un 99, 9 % en peso de al menos un heterocíclico vinílico, b) un 0, 1 a un 10 % en peso de al menos un componente reticulante difuncional, c) un 0 a un 99, 8 % en peso de estireno, o al menos un derivado de estireno monoinsaturado, o sus mezclas, sumándose los datos de % en peso de componentes aislados a), b) y c) para dar un 100 %.

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