Solvay Interox Gmbh

Solvay Chemicals Gmbh

Gabriele Wasem

Werner Doetsch

Manfred Mathes

Helmut Honig

Werner Dötsch

Homogeneous, boron-doped alkaline earth peroxides and mixed alkaline earth peroxides, methods for the production thereof, and use thereof as oxygenating agents for agricultural purposes.

Homogeneous, boron-doped alkaline earth peroxides

Coated metal peroxides, their preparation and use, in which metal peroxides are coated with silicone compounds from selected from the group siliconates, hydrogen-polysiloxanes, siloxanes, silicone resin emulsions, silane/siloxane emulsions, silane/siloxane mixtures, silicone microemulsion concentrates, and silicic acid ester mixtures.

Coated metal peroxides

A method for the &ldquo;dry&rdquo; production of sodium percarbonate (dry process), in which monohydrate crystals of sodium carbonate are reacted with a quasi-stoichiometric quantity of concentrated aqueous hydrogen peroxide solution, relative to the quantity of active oxygen required in the sodium percarbonate to be produced. This method can be combined to great advantage with subsequent compaction of the sodium percarbonate obtained. Sodium percarbonate products containing varying concentrations of active oxygen of at least 10 weight percent, particularly high active oxygen concentrations of above 14.5 weight percent, can be produced. The resulting sodium percarbonate products are distinguished in that they have remarkably advantageous dissolution rates, stabilities and compatibility with detergent bases, and are superior to conventional sodium percarbonates obtained, for example, by a crystallization process. The invention also relates to the sodium percarbonate products obtained and to detergent compositions containing such sodium percarbonate products.

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Hausen, Germany

Gabriele Wasem