22.
    发明专利
    未知

    公开(公告)号:AT289864T

    公开(公告)日:2005-03-15

    申请号:AT02767452

    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.

    24.
    发明专利
    未知

    公开(公告)号:BR0113303A

    公开(公告)日:2003-12-30

    申请号:BR0113303

    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.

    25.
    发明专利
    未知

    公开(公告)号:BR0108777A

    公开(公告)日:2002-11-26

    申请号:BR0108777

    申请日:2001-02-20

    Applicant: BASF AG

    Abstract: A process for preparing polyether polyols includes a precipitation step, a recrystallization step, and a reaction step. In the precipitation step, a multimetal cyanide compound is precipitated by reaction of a metal salt with a cyanometalate compound. In the recrystallization step, the multimetal cyanide compound precipitated above is recrystallized by adding further metal salt and/or further cyanometalate compound. The recrystallization forms a multimetal cyanide catalyst compound. In the reaction step, an initiator and one or more alkylene oxide are reacted in the presence of the multimetal cyanide catalyst compound.

    26.
    发明专利
    未知

    公开(公告)号:AT217860T

    公开(公告)日:2002-06-15

    申请号:AT98906939

    申请日:1998-02-09

    Applicant: BASF AG

    Abstract: PCT No. PCT/EP98/00705 Sec. 371 Date Jul. 28, 1999 Sec. 102(e) Date Jul. 28, 1999 PCT Filed Feb. 9, 1998 PCT Pub. No. WO98/37054 PCT Pub. Date Aug. 27, 1998A process for the isolation of 3-[2-chloro-4-(trifluoromethyl)phenoxy]benzoic acid of the formula I from an aqueous solution of its metal salt comprises a) reacting the metal salt of 3-[2-chloro-4-(trifluoromethyl)phenoxy]benzoic acid with an organic or inorganic acid; b) heating the reaction mixture until a liquid two-phase system of organic and aqueous phase has formed; and c) separating the organic phase from the aqueous phase.

    SOLID-LIQUID REACTION
    30.
    发明专利

    公开(公告)号:CA2458812C

    公开(公告)日:2010-05-04

    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 which is dissolved in the same, one of the reaction products being insoluble in the 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 advantageous in that the insoluble reaction product is obtained in a form which is easy to filter.

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