Patent ID: 8357760
Filing Date: 2013-01-22
Classification: B29D,C08F,C08J,G02B

Abstract:
1. A silicone hydrogel contact lens, comprising: a silicone hydrogel material, wherein the silicone hydrogel material is obtained by polymerizing a lens-forming material including (1) at least one silicone-containing monomer, at least one silicone-containing macromer, at least one silicone-containing prepolymer, or combination thereof and (2) a first hydrolyzable polymer without actinically-crosslinkable groups, a second hydrolyzable polymer with one sole actinically- crosslinkable group, or combination thereof; and a first hydrophilic polymer and/or a second hydrophilic polymer, wherein the first and second hydrolyzable polymers are selected from the group consisting of hydroxylpropylmethylcellulose phthalate (HPMCP), cellulose acetate phthalate (CAP), poly(butadiene/maleic anhydride), and combination thereof, wherein the first and second hydrophilic polymers independent of each other are derived by converting the first or second hydrolyzable polymer in the obtained silicone hydrogel material to the hydrophilic polymer through hydrolysis, wherein the first or second hydrophilic polymer in the silicone hydrogel material is capable of imparting the silicone hydrogel contact lens a hydrophilic surface without post-curing surface treatment.