The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 20, 2015
Filed:
Dec. 09, 2008
Anne Christmann, Ales, FR;
Jean-francois Hochepied, Paris, FR;
Jose-marie Lopez-cuesta, St Christol les Ales, FR;
Laure Meynie, Paris, FR;
Alexandra Roos, Charenton-le-Pont, FR;
Nathalie Cornet, Voisins-le-Bretonneux, FR;
Karine Cavalier, Arles, FR;
Didier SY, Salin de Giraud, FR;
Marc Lacroix, Louvain-la-Neuve, BE;
Anne Christmann, Ales, FR;
Jean-Francois Hochepied, Paris, FR;
Jose-Marie Lopez-Cuesta, St Christol les Ales, FR;
Laure Meynie, Paris, FR;
Alexandra Roos, Charenton-le-Pont, FR;
Nathalie Cornet, Voisins-le-Bretonneux, FR;
Karine Cavalier, Arles, FR;
Didier Sy, Salin de Giraud, FR;
Marc Lacroix, Louvain-la-Neuve, BE;
ARMINES, Paris, FR;
ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE), Paris, FR;
SOLVAY SA, Brussels, BG;
Abstract
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.