Skw Trostberg Aktiengesellschaft

Skw Trostberg Aktiegesellschaft

Kurt Scheinost

Heinz-Rudiger Vollbrecht

Horst Michaud

Benedikt Hammer

Heinrich Rock

Werner Goll

Stefan Ernst

Jens Weitkamp

Wolfgang Kristof

Peter Kniep

Clemens Grambow

Peter Reitsamer

Georg Buchreiter

The present invention provides a process for the production of cyanamide from urea and/or decomposition products thereof at an elevated temperature with the use of a microporous catalyst, wherein, as catalyst, there is used a zeolite and/or a silicoalumophosphate which is doped with transition metal cations selected from the Group IB and VIIB of the Periodic System. In this way, it is possible to increase the conversion, referred to urea, to 60 to 100%, the selectivity with regard to cyanamide thereby being from about 30 to 50% and with regard to the undesired melamine being .ltoreq.2%.

Process for the production of cyanamide

The present invention provides a process for the production of guanidine nitrate by the reaction of urea and excess ammonium nitrate in the presence of a silicon dioxide catalyst at an elevated temperature, wherein the molten reaction mixture containing the dispersed catalyst is passed in a cycle, a branch current of the reaction mixture is continuously separated off by filtration in such a manner that the catalyst remains in circulation and consumed urea and ammonium nitrate are supplemented corresponding to the removal of the product.

Process for the production of guanidine nitrate from urea and ammonium

Process for producing cyanogen chloride by reacting hydrocyanic acid and chlorine in a non-aqueous and/or hygroscopic inorganic solvent.

Process for production of cyanogen chloride

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Trostberg, Germany

Kurt Scheinost