Ultraviolet blocking agents for contact lenses

Details Ultraviolet blocking agents for contact lenses Ultraviolet blocking agents for contact lenses

G - Physics

02

B

88/40, 402/481

G02B 5/22 (2006.01) C07D 249/20 (2006.01) C07D 491/04 (2006.01) C08F 2/44 (2006.01) C08K 5/34 (2006.01) C08K 5/3475 (2006.01) G02B 1/04 (2006.01)

Patent

CA 1286833

ABSTRACT OF THE DISCLOSURE A contact lens comprises a polymer formed by copolymerizing a first monomer suitable for use in making such lenses and a copolymerizable monomeric ultraviolet absorber. The improvement comprises employing as the monomeric ultraviolet absorber about 0.25% to about 2% by weight of a compound selected from the group of compounds having the formula: Image wherein R is Cl or OCH3.

515035

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