Abstract: A method for preparing microparticles and solid microcapsules by adding, with stirring, a composition C?2 in a composition C3, the compositions C?2 and C3 not being miscible with each other, the composition C?2 being either a cross-linkable monophasic composition C2 or an emulsion (E1) having drops of a composition C1, having at least one active ingredient, dispersed in a crosslinkable polymeric composition C2, the compositions C1 and C2 not being miscible in each other, the viscosity of composition C3 being greater than 10,000 mP·s at 25° C. at a shear rate of 10 s?1 and being less than 10,000 mP·s at 25° C. at a shear rate of between 100 s?1 and 100,000 s?1, to obtain an emulsion (E2), applying shear to the emulsion (E2), the applied shear rate being less than 1000 s?1, to obtain an emulsion (E3), and polymerizing the composition C?2.

Abstract: The present invention relates to a method for preparing solid microcapsules, comprising the steps of: a) adding under agitation a composition C1 comprising at least one active material to a cross-linkable liquid composition C2, wherein the active material is an additive to be used in the oil industry, composition C1 and composition C2 being immiscible with each other, so that a first emulsion is obtained, said first emulsion comprising droplets of composition C1 dispersed in composition C2, b) adding under agitation the first emulsion obtained in step a) to a liquid composition C3, composition C3 and composition C2 being immiscible with each other, so that a second emulsion is obtained, said second emulsion comprising droplets dispersed in composition C3, c) loading the second emulsion obtained in step b) in a mixer which applies a homogeneous controlled shear rate to said second emulsion, said shear rate being from 1 000 s?1 to 100 000 s?1, so that a third emulsion is obtained, said third emulsion comprising

Abstract: A method for preparing solid microcapsules, comprising the steps of adding under agitation a composition C1 comprising at least one active material to a cross-linkable liquid composition C2, the active material is not an additive to be used in the lubricant, fuel or bitumen industries, drilling sludges or muds, or oil exploration/production, compositions C1 and C2 being immiscible with each other. A first emulsion is obtained comprising droplets of composition C1 dispersed in composition C2, adding under agitation the first emulsion to a liquid composition C3, composition C3 and composition C2 being immiscible with each other, to obtain a second emulsion comprising droplets dispersed in composition C3.