Polyoxirane crosslinked polyvinyl alcohol hydrogel contact lens

Details Polyoxirane crosslinked polyvinyl alcohol hydrogel contact lens Polyoxirane crosslinked polyvinyl alcohol hydrogel contact lens

G - Physics

02

B

88/40, 400/4008,

G02B 1/04 (2006.01) C08F 8/00 (2006.01) C08J 3/24 (2006.01) C08K 5/15 (2006.01) C08L 29/04 (2006.01)

Patent

CA 1289289

Polyoxirane Crosslinked Polyvinyl Alcohol Hydrogel Contact Lens Abstract Optically clear soft contact lenses of a polyoxirane crosslinked polyvinyl alcohol having a weight average molecular weight of at least 8,000 and degree of hydrolysis of at least 91% and their preparation are disclosed. The materials are characterized by their ability to be boiling water sterilized, and their high water content, high oxygen permeability and high optical clarity.

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