Polymeric compositions for oxygen permeable contact lenses

Details Polymeric compositions for oxygen permeable contact lenses Polymeric compositions for oxygen permeable contact lenses

C - Chemistry, Metallurgy

08

F

402/12, 402/301,

C08F 220/10 (2006.01) C08F 222/10 (2006.01) C08F 230/08 (2006.01) G02B 1/04 (2006.01) G02C 7/04 (2006.01)

Patent

CA 2027748

Carboxylic acid esters devoid of beta hydrogens are homopolymerized or copolymerized with contact lens organic materials to form desirable contact lens materials and contact lenses. These materials have good contact lens properties, including desirable DK values, hardness, machineability and a desirable refractive index of at least 1.

Homopolymérisation ou copolymérisation d'esters d'acides carboxyliques, dépourvus d'hydrogène en bêta, avec des substances pour verres de contact; on obtient ainsi des produits pour ce type de verre ou le verre lui-même. Ces produits possèdent de bonnes propriétés pour les verres de contact, notamment les valeurs DK, la dureté et l'usinabilité recherchées, ainsi qu'un indice de réfraction d'au moins 1.

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