Production of microbeads of pesticides and use of said microbeads for the protection of crops

Abstract

Process for the manufacture of microbeads of an at least partially water-soluble pesticide by polycondensation of complementary organic reagents R1 and R2 in a liquid two-phase system, the reagent(s) R1 being placed with the pesticide in a polar liquid phase (ωp) and the reagent(s) R2 being placed in an oily liquid phase (ωo) comprising a solvent (S) that is immiscible with the polar phase and at least one surfactant for dispersing the polar phase (ωp) in the said oily phase (ωo) with stirring, characterized in that the pair of reagents R1 and R2 is chosen in such a way that the polycondensation occurs in the polar liquid phase (ωp).

Dependencies are inferred from the claim text.