COATED AND FUNCTIONALIZED PARTICLES, POLYMER CONTAINING SAME, METHOD FOR PREPARING SAME AND USES T

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The present invention relates to a particle comprising a core composed of an oxide chosen from rare-earth oxides alone or as a mixture with metal oxides, coated with a layer of silica functionalized by a coupling agent consisting of at least one chemical function soluble in a hydrophobic solvent and also to a composition comprising at least one such particle. The present invention also relates to the method for preparing same and the various uses thereof.