Silicone-containing polymeric materials with hydrolyzable...

B - Operations – Transporting – 29 – D

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B29D 11/00 (2006.01) C08F 230/08 (2006.01) C08F 283/12 (2006.01) C08F 290/06 (2006.01) G02B 1/04 (2006.01)

Patent

CA 2730506

The invention provides a silicone hydrogel contact lens including a hydrolyzable units. The hydrolyzable units can be converted by hydrolysis into a hydrophilic units which is capable of imparting the silicone hydrogel contact lens a hydrophilic surface without post-curing surface treatment. The invention also provides an actinically crosslinkable prepolymer including hy-drolyzable units and use of the prepolymer of the invention. In addition, the invention provides a method for making wettable silicone hydrogel contact lens without posterior surface treatments other than hydrolysis.

La présente invention se rapporte à une lentille de contact en hydrogel de silicone comprenant des unités pouvant être hydrolysées. Les unités pouvant être hydrolysées peuvent être converties par hydrolyse en des unités hydrophiles qui peuvent conférer à la lentille de contact en hydrogel de silicone une surface hydrophile sans traitement de surface post-durcissement. Linvention se rapporte également à un prépolymère pouvant être actiniquement réticulé comprenant des unités pouvant être hydrolysées et à lutilisation du prépolymère de linvention. De plus, linvention se rapporte à un procédé de fabrication dune lentille de contact en hydrogel de silicone mouillable sans traitements de surface postérieurs autre que lhydrolyse.

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