Water-dispersible flake compositions

摘要

A water-dispersible flake comprises a plurality of microcapsules or microparticles containing one or more encapsulated ingredients, for example a pesticide such as a herbicide or an insecticide, wherein the microcapsules or microparticles are held together in flake form by spacer material such as a nonencapsulated pesticide and/or one or more surfactants. The flake may be prepared by (a) mixing an aqueous suspension of the microcapsules or microparticles with spacer material and/or a surfactant to form a dispersion (b) drying the dispersion by thin-layer drying on a heated surface and (c) removing the dried product of step (b) from the heated surface to form flakes.