Renault S.a.s.

Essilor International (compagnie Generale D'optique)

Solvay Sa

Armines

Essilor International

Nathalie Cornet

Didier Sy

Alexandra Roos

Marc Lacroix

Laure Meynie

Karine Cavalier

Serge Bourbigot

Sophie Duquesne

Jean-Francois Hochepied

Virginie Boucher

Jose-Marie Lopez-Cuesta

Anne Christmann

Pascal Archer

A method of preparing a transparent polymer material includes i) obtaining composite nanoparticles having mineral nanoparticles at least partially coated with at least one monomer and/or at least one polymer suitable for promoting physicochemical interactions at the interface between the mineral nanoparticles and a thermoplastic polycarbonate matrix, the mineral nanoparticles being surface-modified by the monomer and/or the polymer, either directly by grafting or directly by adsorption of the monomer and/or polymer onto the surface of the mineral nanoparticles; or via a coupling agent selected from a chlorosilane or an organosilane including a functional group that is capable of reacting by a radical pathway. The composite nanoparticles obtained in step i) are mixed with the thermoplastic polycarbonate matrix in the molten state to obtain the transparent polymer material.

Method of preparing a transparent polymer material comprising a thermoplastic polycarbonate and surface-modified mineral nanoparticles

The present invention provides a method of preparing a transparent polymer material, the method comprising steps i) and ii) in any order, the steps consisting in:

Method for preparing a transparent polymer material including mineral nanoparticles with a shape factor strictly higher than 1.0

An electric motive power system for a motor vehicle including a fuel cell having at least one set of two electrodes each provided with an electrode input and output, an electrolytic membrane being located between the two electrodes. The electrolytic membrane includes proton conductive charges distributed in the thickness of the membrane in accordance with a concentration gradient, to concentrate the water in liquid form produced by the fuel cell on one of the electrodes, and wherein the water in liquid form thus concentrated is evacuated from the fuel cell through a single electrode output.

Electric motive power system for a motor vehicle, and method for using a fuel-cell

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Voisins Le Bretonneux, France

Nathalie Cornet