Basf Aktiengesellschaft

Compo Gmbh & Co., Kg

Compo Gesellschaft Mbh & Co., Kg

K+s Nitrogen Gmbh

Vilmos Czikkely

Johann Jung

Dirk Franke

Klaus Erhardt

Matthias R&auml;dle

Klaus Horchler

Gerd B&uuml;hler

Walter Von Maessenhausen

Gerd Bühler

Matthias Rädle

The continuous production of acetylene diurea takes place by means of the reaction of glyoxal with urea in the presence of mineral acids. The reaction is carried out in at least one reactor having a mixing device, into which glyoxal, urea, and mineral acid are continuously fed, and from which a suspension of acetylene diurea in mother liquor is discharged. The acetylene diurea is mechanically removed from the mother liquor, and the remaining mother liquor is recycled back into the reactor, in whole or in part.

Method for the continuous production of acetylene diurea

Fertilizer formulations comprising polysulfonic acid together with inorganic fertilizers or slurry or liquid fertilizers and one or more nitrification inhibitors.

Fertilizer formulations comprising polysulfonic acids

Soils are fertilized by a method in which ammonium syngenite (NH.sub.4).sub.2 SO.sub.4.CaSO.sub.4.H.sub.2 O or a mixture of finely divided ammonium sulfate, calcium sulfate, calcium nitrate, calcium chloride and/or dicalcium phosphate is applied to these soils, as a slow-acting nitrogen fertilizer, with the proviso that the molar ratio of Ca to SO.sub.4.sup.-- in the mixture is 1:2.+-.10%.

Use of ammonium syngenite as a slow-acting nitrogen fertilizer

Growing community of inventors

Mannheim, Germany

Vilmos Czikkely