Fast-dispensing solid pvp-containing crop protection formulation and process therefor
AssigneeAmerican Cyanamid Company
InventorsDavid John Wedlock, Gerhard De Lind Van Wijngaarden
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Abstract
A process for producing a solid formulation of a crop protection agent which has an exceptionally fast rate of dispersion in water, and the formulation made by this process. This process includes coextruding a crop protection agent and polyvinylpyrrolidone, and subsequently cooling and milling the extrudate. The resulting granules may be pressed into tablets or agglomerated into larger granular masses.
Claims10
A process for the preparation of a solid formulation of a crop protection agent that disperses rapidly in water to release greater than 80% by mass of said agent in less than one minute, which process comprises co-extruding said crop protection agent with polyvinylpyrrolidone, subsequently cooling the extrudate until brittle and then milling, wherein said crop protection agent dissolves in polyvinylpyrrolidone to form a solid solution.
Dependencies are inferred from the claim text.