Hydrophilic colored contact lenses

Details Hydrophilic colored contact lenses Hydrophilic colored contact lenses

G - Physics

02

B

117/183

G02B 1/10 (2006.01) B41M 1/30 (2006.01) G02B 1/04 (2006.01)

Patent

CA 1331115

ABSTRACT OF THE DISCLOSURE There is disclosed a method for making colored hydrophilic contact lenses. A contact lens constructed of hydrophilic polymer that is substantially devoid of the functional groups -COOH, -OH, -NH-R, wherein R is hydrogen or C1 to C8 alkyl, -NCO and epoxy is provided. At least a portion of the surface of the lens is coated with a color coat comprising at least one pigment, binding polymer having functional groups selected from at least one of -COOH, -OH, and -NH-R, wherein R is hydrogen or C1 to C8 alkyl, and an additional compound having at least two groups per molecule of -NCO. The coated lens is subjected to conditions which cause the color coat to adhere to the lens.

583829

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