Ultraviolet absorbing polymers comprising 2-hydroxy-5-acrylyloxyphenyl-2H-benzotriazoles
AssigneeIolab Corporation
InventorsCharles D. Beard, Akira Yamada, Namassivaya Doddi
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Abstract
Ultraviolet light absorbing polymer compositions comprising copolymers of 2-Hydroxy-5-acrylyloxyphenyl-2H-benzotriazoles with one or more other monomers copolymerizable therewith, particularly acrylic monomers are useful in the manufacture of occular devices, particularly intraoccular lenses and contact lenses. Polymers of the disclosed benzotriazoles may be added to other organic materials to impart ultraviolet absorbing properties thereo.
Claims23
A compound of the formula ##STR9## wherein X is H or halogen,
- R.sub.1 is selected from the group consisting of H, CH.sub.3 and t-alkyl of 4 to 6 carbons,
- R.sub.2 is C.sub.2 -C.sub.10 alkylene which may be straight chain or branched, and
- R.sub.3 is H or CH.sub.3 ;
- and
- homopolymers thereof.
The compound 2-(2'-Hydroxy-5'-methacryloxyethylphenyl)-2H-benzotriazole and homopolymers thereof.
The compound 2-(2'-Hydroxy-5'-methacrylyloxyethylphenyl)-5-chloro-2H-benzotriazole and homopolymers thereof.
The compound 2-(2'-Hydroxy-5'-methacrylyloxypropylphenyl)-2H-benzotriazole and homopolymers thereof.
The compound 2-(2'-Hydroxy-5'-methacrylyloxypropylphenyl)-5-chloro-2H-benzotriazole and homopolymers thereof.
The compound 2-(2'-Hydroxy-5'-methacrylyloxypropyl-3'-tert-butylphenyl)-2H-benzotriazol e and homopolymers thereof.
The compound 2-(2'-Hydroxy-5'-methacrylyloxypropyl-3'-tert-butylphenyl)-5-chloro-2H-ben zotriazole and homopolymers thereof.
Dependencies are inferred from the claim text.