Polymeric composition

C - Chemistry – Metallurgy – 08 – L

Patent

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Details

C08L 69/00 (2006.01) C08J 7/06 (2006.01) C08K 3/22 (2006.01) C08K 5/101 (2006.01) C08K 5/20 (2006.01) C08K 13/02 (2006.01) G02B 1/04 (2006.01)

Patent

CA 2666543

The invention relates to a polymeric composition, comprising: at least one thermoplastic resin having a glass transition temperature of at least about 220°C; inorganic particulates having an average particle size in the range up to about 100 nanometers dispersed in the thermoplastic resin, the inorganic particulates having an index of refraction in the range from about 1.4 to about 3; and an effective amount of at least one dispersant to disperse the inorganic particulates in the thermoplastic resin. The polymer composition may be a high temperature thermoplastic suitable for forming, such as by molding, optical articles such as lenses.

La présente invention concerne une composition polymérique comprenant : au moins une résine thermoplastique ayant une température de transition vitreuse supérieure ou égale à 220 °C; des particules inorganiques ayant une taille de particules moyenne inférieure ou égale à environ 100 nanomètres dispersées dans la résine thermoplastique, les particules inorganiques ayant un indice de réfraction compris entre environ 1,4 et environ 3; et une quantité efficace d'au moins un dispersant destiné à disperser les particules inorganiques dans la résine thermoplastique. La composition polymère peut être une thermoplastique haute température convenant au formage, par exemple par moulage, d'articles optiques tels que des lentilles.

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