Ultraviolet absorbing hydrogels
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United States of America Patent
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-
Jul 28, 1992
Issued Date -
N/A
app pub date -
Apr 24, 1991
filing date -
May 26, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Two compounds, which are derivatives of 2(2-hydroxyphenyl) 2H-benzotriazole, are copolymerized with hydrogel forming monomers to form ultraviolet absorbing hydrogels. These hydrogels have many potential applications. For instance, they can be used to make contact lenses and intraocular lenses which are particularly useful for aphakics.
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