Lens composition, article and method of manufacture

Details Lens composition, article and method of manufacture Lens composition, article and method of manufacture

C - Chemistry, Metallurgy

08

F

18/106, 88/40, 4

C08F 30/08 (2006.01) C08F 230/08 (2006.01) G02B 1/04 (2006.01) G02C 7/04 (2006.01)

Patent

CA 1234243

ABSTRACT OF THE DISCLOSURE A copolymer composition, especially suited for fabricating optical lenses comprising a copolymer of copolymerized comonomers which include about one to about 25 percent by weight of an acryloxyalkylsilanol; about 0.5 to about 15 percent by weight of a polyacryloxyalkyl- polysiloxane; about 5 to about 60 percent by weight of an siloxy substituted ester of acrylic or methacrylic acid; and from about 35 to about 90 percent by weight of an acrylic or methacrylic ester of an alkanol having from one to twenty carbon atoms. Contact lenses and contact lens buttons are formed of such copolymer of copolymerized comonomers by conventional techniques, by injection molding, and by compression molding.

489475

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