Tinted contact lens and method for preparation with dichlorotriazine reactive dye
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United States of America Patent
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Jan 2, 1990
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N/A
app pub date -
Mar 15, 1984
filing date -
Mar 15, 1984
priority date (Note) -
Expired
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Abstract
Hydrophilic contact lenses comprised of a copolymer of an hydroxyl group-containing monomer and N-vinylpyrrolidone are tinted by impregnating the lens with an aqueous solution of a dichlorotriazine reactive dye and fixing the dye in the lens by contacting the lens with an aqueous alkaline solution.
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