abstract |
The invention provides a solvent-free biocidal composition of improved efficacy, comprising at least one water insoluble biocide (preferably a herbicide) and a water soluble carrier material, wherein the water insoluble biocide is dispersed through the carrier material in nano-dispersed form, having a peak diameter of the nano-dispersed form below 1000 nm. The invention also provides a process, which comprises spray drying a solution of the biocide and a solution of a water-soluble carrier to obtain a solvent-free dispersion of the biocide in the carrier, which, when dissolved in water, produces a nano-dispersed biocide. The invention also provides an aqueous dispersion of a water insoluble biocide and a water soluble carrier obtained by dispersing the composition of the solvent-free composition in water. |