C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
402/9
C08F 230/08 (2006.01) B29D 11/00 (2006.01) C08F 220/12 (2006.01) G02B 1/04 (2006.01)
Patent
CA 1261998
ABSTRACT OF THE DISCLOSURE A copolymer composition, especially suited for fabricating optical lenses comprising a copolymer of copolymerized comonomers which include in weight percent about one to about twenty percent by weight of an acryloxyalkylsilanol; about one to about fifteen percent of a polyacryloxyalkylpolysiloxane; about thirty to about seventy five percent of an siloxy substituted ester of acrylic or methacrylic acid; from about one to about 35 percent of an alkyl or cycloalkyl acrylate or methacrylate having from one to twenty carbon atoms; from about one to about twenty percent of a polyol diacrylate; and from about one to about twenty percent of a wetting monomer. Contact lenses and contact lens buttons are formed of such copolymer of copolymerized comonomers by conventional techniques, by injection molding, and by compression molding.
496859
Macrae & Co.
Paragon Optical Inc.
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