SOLID-LIQUID REACTION
    52.
    发明专利

    公开(公告)号:HU0401278A2

    公开(公告)日:2004-12-28

    申请号:HU0401278

    申请日:2002-08-29

    Applicant: BASF AG

    Abstract: A process for carrying out a liquid/solid reaction comprises a) preparing a reaction suspension in which a first reactant is present in suspended form and a second reactant is present in dissolved form in a suspension medium, where one of the reaction products is insoluble in the suspension medium, b) passing the reaction suspension through an elongated reaction zone so that the Reynolds number of the stream is less than 20,000 and c) separating off the insoluble reaction product formed. The process has the advantage that the insoluble reaction product is obtained in a readily filterable form.

    53.
    发明专利
    未知

    公开(公告)号:DE50101522D1

    公开(公告)日:2004-03-25

    申请号:DE50101522

    申请日:2001-08-16

    Applicant: BASF AG

    Abstract: Described is a process for the preparation of a particulate tetrahydro-3,5-dimethyl-1,3,5-thiadiazine-2-thione product by combining a first aqueous solution comprising methylammonium N-methyldithiocarbamate with a second aqueous solution comprising formaldehyde, followed by separation and drying of the resulting solid, which comprises combining the first and the second aqueous solutions in such a way that the ratio between the concentrations of dithiocarbamate functions and of formaldehyde is essentially constant in the reaction mixture over time during the duration of the reaction.

    SOLID-LIQUID REACTION
    57.
    发明专利

    公开(公告)号:CA2458812A1

    公开(公告)日:2003-03-13

    申请号:CA2458812

    申请日:2002-08-29

    Applicant: BASF AG

    Abstract: The invention relates to a method for carrying out a solid-liquid reaction, according to which a) a reaction suspension is prepared, containing a first reactant which is suspended in a suspension medium and a second reactant whi ch is dissolved in the same, one of the reaction products being insoluble in th e suspension medium, b) the reaction suspension is guided through a longish reaction zone, the Reynolds number of the flow being less than 20,000, and c ) the insoluble reaction product formed is separated. The method is advantageo us in that the insoluble reaction product is obtained in a form which is easy t o filter.

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