MAGNETIZABLE MICROSPHERES BASED ON POLYSILSESQUIOXANE, THE PROCESS FOR THEIR PREPARATION AND THEIR APPLICATION IN BIOLOGY

摘要

Magnetisable microspheres consisting of a polysilsesquioxane lattice and distributed uniformly inside the lattice of magnetisable fillers chemically bonded to polysilsesquioxane units. …??They are prepared by dispersion in a solvent of an aqueous suspension of magnetisable fillers not coated with dispersing agent, dissolving an alkoxysilane or an alkoxysiloxane in the organic phase, polycondensation to a polysilsesquioxane, removal of water, separation and optional redispersion of the microspheres in water.