Abstract: An electrolysis cell for preparing alkali metals from a liquid alkali metal heavy metal alloy, including a tube arranged essentially horizontally having a closure device at each of the two ends of the tube. At least one solid electrolyte tube arranged concentrically in the tube and oriented with openings towards one end of the tube such that a first annular gap for conducting a liquid alkali metal, which forms an anode, is present between the inside of the tube and the outside of the solid electrolyte tube. An interior space in the solid electrolyte tube, sealed off from an alloy inlet, first annular gap and an alloy outlet, accommodates liquid alkali metal that can be used as a cathode.

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.

Abstract: The invention relates to an electrolysis cell for preparing liquid alkali metal from a liquid alkali metal-heavy metal alloy, which comprises a tube (1) which is arranged essentially horizontally and has a closure device (4) at each of the two ends of the tube (1), at least one solid electrolyte tube (12) arranged in the tube (1), which conducts alkali metal ions and is closed at one end and has an opening (11) at the other end, with the solid electrolyte tube (12) being arranged concentrically in the tube (1) and having the opening (11) facing one end of the tube (1) so that a first annular gap (13) for conducting the liquid alkali metal-heavy metal alloy which forms one anode is present between the inside of the tube (1) and the outside of the solid electrolyte tube (12), an interior space (14) in the solid electrolyte tube (12) for accommodating the liquid alkali metal which can be utilized as cathode, where the closure device (4) comprises an alkali metal-heavy metal alloy inlet (8) or outlet (9) op

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.

Abstract: A process for carrying out a liquid/solid reaction comprises

Abstract: A process for preparing multimetal cyanide compounds by reacting a metal salt with a cyanometalate compound comprises the steps

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.

Abstract: A process for preparing multimetal cyanide compounds by reacting a metal salt with a cyanometalate compound comprises the steps a) precipitation of the multimetal cyanide compound by reaction of a metal salt with a cyanometalate compound and b) recrystallization of the multimetal cyanide compound precipitated in step a).

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.

Abstract: A process for preparing multimetal cyanide compounds by reacting a metal salt with a cyanometalate compound comprises the steps

Abstract: A process for the isolation of 3-[2-chloro-4-(trifluoromethyl)phenoxy]benzoic acid of the formula I ##STR1## 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; andc) separating the organic phase from the aqueous phase.