Skw Trostberg Aktiengesellschaft

Skw Trostberg Aktiegesellschaft

Horst Michaud

Josef Seeholzer

Benedikt Hammer

Heinrich Rock

Joachim Von Seyerl

Hermann Raveling

Stefan Weiss

Werner Goll

Stefan Ernst

Jens Weitkamp

Kurt Scheinost

Georg L Rieder

Joachim V Seyerl

Horst Behnke

Joseph Seeholzer

Bohnslav Dobias

Rudolf Eichinger

Svatoplug Solansky

Ulrich Metz

The present invention provides a hardner for epoxide resin masses based on dicyandiamide, wherein it contains

Hardener for epoxide resin masses

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 separation of minerals by flotation in the presence of activators and suppressors. Activators are cation-active condensation products and suppressors are anion-active products of aminoplast formers, formaldehyde and amines, ammonium salts, acids or a sulphite, in combination with either an anion-active or cation-active tensides.

Process for the separation of minerals by flotation

The present invention provides a process for bleaching and delignifying cellulose-containing products with peroxides and/or oxygen and/or ozone, wherein there is additionally used 0.01 to 2.5% by weight of cyanamide and/or cyanamide salts, referred to the dry weight of the cellulose.

Process for bleaching and delignifying cellulose-containing products

The present invention provides a process for sizing in the production of paper, cardboard, paperboard and other cellulose-containing materials with and without filling materials and/or pigments by natural or synthetic sizing agents under neutral to weakly basic pH conditions without the use of aluminum salts, wherein sizing is carried out with a combination of natural or synthetic sizing agents with a cationic dicyandiamide resin.

Process for sizing in the production of paper, cardboard, paperboard and

The present invention provides an agent for inhibiting the nitrification of nitrogen-containing fertilizers based on dicyandiamide, which comprises 1 to 40% by weight of a fertilizer which is readily soluble in water and/or ammonia. The present invention also provides a process for the production of this agent, wherein finely particulate dicyandiamide is sprayed with an aqueous solution of a fertilizer which is readily soluble in water and/or ammonia and subsequently dried.

Nitrification-inhibiting agent and process for the production thereof

The invention relates to a nitrogen fertilizer having a long-term action based on urea-formaldehyde condensation products suspended in water. The fertilizer contains dicyandiamide in an amount of from 5 to 35% by weight of dicyandiamide-nitrogen, based on the nitrogen content of the urea, and from 0.001 to 0.5% by weight of polymers of vinyl alcohol or polymers of aldehyde-carboxylic acids, based on the weight of the suspension.

Nitrogen fertilizer and process for its manufacture

A cyanuric chloride of improved shelf life is described, which contains 0.1 to 10% of dicyandiamide by weight. The cyanuric chloride of the invention shows both a decidedly lesser tendency to cake up and an improved resistance to hydrolysis in the presence of moisture.

Cyanuric chloride having improved shelf life

The present invention provides a stabilized fertilizer solution, especially a nitrogen fertilizer solution, with a content of dicyandiamide as nitrification inhibitor, wherein, for retarding dicyandiamide crystallization, the solution contains at least one water-soluble organic polymeric compound as stabilizer.

Stabilized fertilizer solutions

Odorless prilled urea-dicyandiamide fertilizers are produced by melting a mixture of urea and dicyandiamide containing 5% to 35% by weight of dicyandiamide nitrogen, based on the total nitrogen of the mixture, at a temperature below 135.degree. C. and then prilling the molten material to form a free-flowing globular product.

Process for the production of odorless prilled urea-dicyandiamide

Novel hyperacid solid metal lactates containing up to about twenty moles of lactic acid per mole a neutral metal lactate are produced by reacting an aqueous solution of lactic acid containing up to about 0.5 percent polylactic acids with a suitable metal compound. Such lactates have the formula Me(C.sub.3 H.sub.5 O.sub.3).sub.x (C.sub.3 H.sub.6 O.sub.3).sub.n wherein n represents a number from 4 to 12 and x corresponds to the valence of the metal Me, and are useful in the food industry as substitutes for liquid lactic acids in the making of bread and beverages.

Hyperacidic solid metal lactates, process for producing same

Aqueous solutions of commonly used fertilizers which also contain dicyandiamide, in an amount to provide at least 10% by weight of dicyandiamide nitrogen, are effective nitrification inhibitors and have an improved capacity to dissolve micronutrients to form solutions of improved micronutrient stability.

Growing community of inventors

Trostberg, Germany

Horst Michaud