High refractive index flexible silicone

Details High refractive index flexible silicone High refractive index flexible silicone

C - Chemistry, Metallurgy

08

G

C08G 77/04 (2006.01) A61L 27/18 (2006.01) C08G 77/50 (2006.01) G02B 1/04 (2006.01)

Patent

CA 2475468

The present invention discloses to a high refractive index polysiloxane (co)polymer comprising refractive index modifying groups chemically bonded in clustered configuration to the polysiloxane backbone. The invention also discloses methods for the preparation of such high refractive index polysiloxane (co)polymers . A polysiloxane according to the invention is very suitable for use as a material for the production of intra-ocular lenses.

La présente invention porte sur un (co)polymère de polysiloxane à indice de réfraction élevé qui comprend des groupes modifiant l'indice de réfraction et qui sont liés chimiquement en une configuration en grappes au squelette de polysiloxane. L'invention porte également sur des procédés de préparation de ces (co)polymères de polysiloxane à indice de réfraction élevé. Le polysiloxane de cette invention est tout à fait approprié pour être utilisé comme matériau dans la production de lentilles intraoculaires.

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