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    175.
    发明专利
    未知

    公开(公告)号：DE10325490A1

    公开(公告)日：2004-12-30

    申请号：DE10325490

    申请日：2003-06-04

    Applicant: BASF AG

    Inventor： FLORES MIGUEL ,  BARTSCH MICHAEL ,  BAUMANN ROBERT ,  HADERLEIN GERD ,  JUNGKAMP TIM ,  SCHEIDEL JENS ,  LUYKEN HERMANN ,  SIEGEL WOLFGANG ,  MEYER CHRISTA ,  WIDMAIER RALF

    IPC: C07C37/11 ,  C07C39/15 ,  C07C37/58

    Abstract: The invention is a process for preparing tetraalkyl-substituted biphenol which comprises reacting a 2,4- or 2,6-dialkyl substituted phenol in which the alkyl groups contain 1 to 6 carbon atoms with a peroxidase enzyme in the presence of a peroxide in an aqueous medium to yield a tetraalkyl-substituted biphenol by oxidative coupling of the 2,4- or 2,6-dialkyl substituted phenol, or yielding a tetra-alkyl substituted quinone, and reducing the quinone to obtain a tetraalkyl-substituted biphenol. The invention further includes a process for preparing a tetraaryl-substituted biphenol in which the aryl groups contain 6 to 10 carbon atoms which comprises racting a 2,4 or 2,6 diarylphenol with a peroxidase enzyme to yield a tetraaryl-substituted biphenol. A process for reducing a tetraalkyl-substituted quinone to corresponding tetraalkyl-substituted biphenol which comprises reducing the quinone with a phenol in an aqueous medium at a temperature of about 60° to 120° C. is also included.

    METHOD FOR REMOVING WATER FROM A MIXTURE CONTAINING WATER AND ZINC CHLORIDE
    179.
    发明专利
    METHOD FOR REMOVING WATER FROM A MIXTURE CONTAINING WATER AND ZINC CHLORIDE 未知

    公开(公告)号：CA2491791A1

    公开(公告)日：2004-01-22

    申请号：CA2491791

    申请日：2003-07-04

    Applicant: BASF AG

    Inventor： HADERLEIN GERD ,  BAUMANN ROBERT ,  LUYKEN HERMANN ,  BARTSCH MICHAEL ,  SCHEIDEL JENS ,  JUNGKAMP TIM

    IPC: B01D3/36 ,  C01G9/04 ,  F26B5/00 ,  F26B7/00 ,  C07C253/34

    Abstract: The invention relates to a method for removing water from a mixture containi ng water and zinc chloride. The invention is characterized in that said mixture containing water and zinc chloride is mixed with an aprotic, polar diluting agent whose boiling point, in the event of non-azeotropic formation of said diluting agent with water under the pressure conditions of the distillation mentioned below, is higher than the boiling point of water and is liquid at the boiling point of water or one azeotrope or heteroazeotrope with water is formed under the pressure and temperature conditions of the distillation mentioned below, and the mixture containing water, zinc chloride and the diluting agent is distilled while removing water or said azeotrope or said heteroazeotrope from this mixture while obtaining a water-free mixture containing zinc chloride and said diluting agent.

    METHOD FOR THE RECYCLING OF A LEWIS ACID
    180.
    发明专利
    METHOD FOR THE RECYCLING OF A LEWIS ACID 未知

    公开(公告)号：CA2491240A1

    公开(公告)日：2004-01-22

    申请号：CA2491240

    申请日：2003-07-04

    Applicant: BASF AG

    Inventor： HADERLEIN GERD ,  JUNGKAMP TIM ,  LUYKEN HERMANN ,  SCHEIDEL JENS ,  BAUMANN ROBERT ,  BARTSCH MICHAEL

    IPC: B01J31/18 ,  B01J27/32 ,  B01J31/40 ,  B01J38/00 ,  C07B61/00 ,  C07C253/10 ,  C07C255/04 ,  C07C255/07

    Abstract: The invention relates to a method for the recycling of a Lewis acid from a reaction mixture (I), obtained from the hydrocyanation of an olefinically- unsaturated compound to give a nitrile, which has a miscibility gap with wat er under certain concentration, pressure and temperature conditions, in the presence of a catalyst system comprising a Lewis acid and a complex compound of a phosphorus-containing compound suitable as a ligand and a central atom suitable for said compound, characterised in that a) said complex compound i s separated from a mixture (I) to give a mixture (II), b) mixture (II) is treated with water and undergoes a transformation generating pressure and temperature conditions to give a phase (III) with a higher proportion of wat er than said nitrile and a phase (IV) which has a higher proportion of said nitrile than of water, whereby phase (III) has a higher content of said Lewi s acid than phase (IV), c) phase (III) is treated with a liquid diluent (V) which c1) does not form an azeotrope with water and the boiling point of whi ch is higher than that of water under certain pressure conditions, or c2) forms an azeotrope or heteroazeotrope with water under certain pressure conditions , d) the mixture of phase (III) and liquid diluent (V) is distilled under the pressure conditions given in step c1) or c2) to give a mixture (VI) which ha s a higher proportion of water than of liquid diluent (V) and a mixture (VII) which has a higher proportion of diluent (V) than water, whereby mixture (VI I) has a higher content of said Lewis acid than mixture (VI), and e) mixture (VII) is fed to a hydrocyanation of an olefinically-unsaturated compound to give a nitrile, which has a miscibility gap with water under certain concentration, pressure and temperature conditions, in the presence of a catalyst system comprising a Lewis acid and a complex compound of a phosphor us- containing compound suitable as a ligand and a central atom suitable for sai d compound.

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