the latex particles is reached in this context the process then comprises after step e1 a step e2 of chemical treatment of the end of the chain for example when the reactive stabilizer used in step e1 is a xanthate the xanthate reactive end obtained on the polymer may be deactivated to deprive the polymer of its living nature for example via the action of hydrogen peroxide or via the action of an organoperoxide or alternatively of ozone which oxidizes the xanthate reactive end into various oxidized species especially of thioester type u2014 s c u2550 o u2014 and u2014 so 3 h the latices obtained after step e1 may be used in a very large number of applications especially for producing paints coatings and adhesives for preparing construction materials or alternatively in cosmetic or body care compositions in plant protection formulations or for the agricultural sector or alternatively in petroleum extraction fluids according to a particular embodiment the polymer dispersion obtained from step e1 which comprises block polymers derived from the controlled radical polymerization as obtained after step e1 organized in the form of micelles which may be used as a site of polymerization for controlled radical polymerizations the invention and the advantages thereof will be further illustrated by the implementation examples given below 10 g of vdc 59 g of distilled water 0 47 g of polyacrylamide xa xa rhodixan a1 mn 3000.