C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
C08F 220/36 (2006.01) C08F 214/18 (2006.01) C08F 220/22 (2006.01) C08F 220/56 (2006.01) C08F 226/06 (2006.01) C08F 230/08 (2006.01) G02B 1/04 (2006.01) G02C 7/04 (2006.01)
Patent
CA 2108682
NOVEL COMPOSITION FOR CONTACT LENSES Abstract A hydrogel copolymer for making contact lenses comprises, by weight, about 5 to about 85 percent of .alpha.-methylene-N-methylpyrrolidone or glycidyl methacrylate and mixtures thereof from about 5 to about 35 percent of N,N- dimethylacrylamide, from about 5 to about 60 percent of a polymerizable fluoromonomer, and from about 1 to about 15 percent of a polymerizable hydrophobic non-hydrolyzable silicone monomer. An initiator and a crosslinker are usually preferably also employed.
Optical Research Inc. D/b/a Materials Development Corporation
Sim & Mcburney
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