Method of preparing a transparent polumer material comprising a thermoplastic polycarbonate and mineral nanoparticles

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United States of America Patent

PATENT NO 9284422
SERIAL NO

12746011

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Abstract

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A method of preparing a transparent polymer material includes mixing mineral nanoparticles selected from nanoparticles of alkaline-earth metal carbonates, alkaline-earth metal sulfates, metallic oxides, oxides of metalloids, and siloxanes, and a composition A including at least one thermoplastic polymer in the molten state selected from polycarbonate (PC), polystyrene (PS) and polymethyl methacrylate (PMMA) in order to obtain a master-batch, the mixture of step i) including at least 25% and at most 75% by weight of the mineral nanoparticles. The master-batch obtained in step i) is mixed with a composition B of a thermoplastic polycarbonate matrix (PCm) in the molten state, to obtain a transparent polymer material including at most 10% by weight of the mineral nanoparticles, preferably at most 5% by weight of the mineral nanoparticles.

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Patent Owner(s)

  • ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE);RENAULT S.A.S.;SOLVAY SA;ECOLE NATIONALE SUPERIEURE DE CHIMIE DE LILLE;RENAULT S.A.S.; SOLVAY SA;SOLVAY SPECIALITES FRANCE S.A.S.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Boucher, Virginie Villeneuve d'ascq, FR 2 3
Bourbigot, Serge Villeneuve d'Ascq, FR 10 23
Cavalier, Karine Arles, FR 20 71
Duquesne, Sophie Villeneuve d'Ascq, FR 33 212
Lacroix, Marc Louvain-la-Neuve, BE 21 86
Meynie, Laure Paris, FR 3 11
Roos, Alexandra Charenton-le-Pont, FR 9 80
Sy, Didier Salin de Giraud, FR 11 51

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