Production of Solid Solutions of Pesticides by Short-Term Superheating and Rapid Drying

A method for the production of pulverulent or granulated solid solution of a sparingly soluble pesticide, in which the sparingly soluble pesticide is molecularly dispersed in a matrix of inactive ingredients, comprising

• preparing a solution of the pesticide and of the inactive ingredients of the matrix by heating an aqueous suspension of the sparingly soluble pesticide in the presence of the inactive ingredients of the matrix to temperatures that are above the boiling point at normal pressure and the sparingly soluble pesticide is dissolved, and
• converting the solution of the sparingly soluble pesticide and of the inactive ingredients of the matrix to a solid form by spraying and drying, the temperature of the solution before being fed into a spraying device being between 80° C. and 350° C.

A solid solution of sparingly soluble pesticides in the form of powders or granules obtained by heating an aqueous suspension of the sparingly soluble pesticide in the presence of inactive ingredients of the matrix to temperatures that are above the boiling point at normal pressure, and dissolution of the sparingly soluble pesticide, and subsequently converting the solution of the sparingly soluble pesticide and the inactive ingredients of the matrix to a solid form by spraying and drying, the temperature of the spray solution before it is fed into the spraying device being 80° C. to 350° C.