Patent ID: 8535698
Filing Date: 2013-09-17
Classification: A01N

Abstract:
1. A process for providing both of high initial activity and high residual activity to a water dispersible granule formulation comprising a process for producing the water dispersible granule formulation comprising the steps of: wet milling a combined mixture of a first active ingredient, a wetting and dispersing agent, and water, pulverizing a combined mixture of a second active ingredient, a mineral carrier, and a wetting and dispersing agent under dry milling, admixing the mixture obtained in the wet milling step and the mixture obtained in the dry milling step, and then drying the admixed mixture to form a homogeneous granule formulation, wherein: the first active ingredient is pulverized to an average particle size value from about 0.5 μm to about 5 μm in the step of wet milling the combined mixture, the second active ingredient is pulverized to an average particle size value from about 3 μm to about 30 μm in the step of pulverizing the combined mixture under dry milling, the first active ingredient is a compound which is a solid at an ambient temperature and has a solubility in water of 1,000 ppm or less, the first and second active ingredients are different active ingredients, the second active ingredient is an agricultural chemical selected from the group consisting of an insecticide, a fungicide, and a herbicide, each of the first and second active ingredients have two different average particle sizes, and the second active ingredient has coarser particles than the first active ingredient.