Particles containing agricultural active ingredients
AssigneeMonsanto Technology LLC
InventorsM. Francis Botts, Frank C. Kohn, Maria L. Miller
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Abstract
One or more agricultural active ingredients (such as fungicides or insecticides) are entrapped in polymeric matrixes to form particles having a diameter in the range from about 0.2 to about 200 microns. The particles are applied to soil, to seeds, or to plants and release the active ingredient(s) at a rate sufficiently low to avoid phytoxicity but at a rate sufficiently high to provide effective amounts of the active ingredient(s), preferably throughout the growing period of the plant.
Claims28
A method of producing a solid particle wherein the particle is free of a plasticizer and comprises a triazole fungicide dispersed throughout a solid polymer matrix, the method comprising:
- (a) providing a hydrophobic solution comprising the triazole fungicide, a polymer, and a solvent;
- (b) mixing the hydrophobic solution and an aqueous medium to produce a dispersion of droplets of the hydrophobic solution in the aqueous medium;
- and
- (c) evaporating the solvent from the dispersion to produce the solid particle which is free of a plasticizer and which comprises the triazole fungicide dispersed throughout the solid polymer matrix.
Dependencies are inferred from the claim text.