ENCAPSULATION OF HYDROPHOBIC SUBSTANCES BY INTERFACIAL POLYCONDENSATION OF A POLYFUNCTIONAL AMINE AND A POLYFUNCTIONAL HYDROPHOBIC REAGENT

摘要

"ENCAPSULATION OF SUBSTANCES BY INTERFACIAL POLYCONDENSATION" The invention provides a process for the encapsulation of a hydrophobic substance, for example an insecticide or herbicide, by interfacial polycondensation which comprises preparing a dispersion, in an aqueous phase containing at least one polyfunctional amine the amine functions of which have been rendered unreactive by salification, of an organic phase containing the hydrophobic substance and at least one polyfunctional hydrophobic reagent having functional groups containing the carbonyl or sulphonyl group, and then adding to the aqueous phase a base stronger than the polyfunctional amine to liberate the amine functions and to start the polycondensation reaction.