Hydrogel with high water content and stability

C - Chemistry – Metallurgy – 08 – F

Patent

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Details

C08F 220/26 (2006.01) G02B 1/04 (2006.01)

Patent

CA 2702096

A polymer comprising hydrophilic and hydrophobic properties is provided. The polymer can be formed into a hydrogel capable of being used as a contact lens. The lens can exhibit high water content such as for example more than 70 wt.% for biocompatibility and structural stability for handling. The hydrophilic portion can be 2,3-dihydroxypropyl methacrylate (GMA) and the hydrophobic portion can be 2-methoxyethyl methacrylate (MOEMA). Additionally, the lens can also include N,N-dimethylacrylamide (NN-DMA). Lens can be prepared and formed by molding including a cast molding process or a half cast molding process.

L'invention concerne un polymère possédant des propriétés hydrophiles et hydrophobes. Le polymère peut être formé en un hydrogel pouvant être utilisé comme verre de contact. Le verre peut présenter une teneur en eau élevée telle que, par exemple, supérieure à 70 % en poids pour une biocompatibilité et une stabilité structurelle pour manipulation. La partie hydrophile peut être en méthacrylate de 2,3-dihydroxypropyle (GMA) et la partie hydrophobe peut être en méthacrylate de 2-méthoxyéthyle (MOEMA). En outre, le verre peut également comprendre du N,N-diméthylacrylamide (NN-DMA). Le verre peut être préparé et formé par moulage y compris un procédé de moulage par coulée ou un procédé de moulage par demi-coulée.

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