Ultraviolet absorbing polymers comprising 2-hydroxy-5-...

Details Ultraviolet absorbing polymers comprising 2-hydroxy-5-... Ultraviolet absorbing polymers comprising 2-hydroxy-5-...

C - Chemistry, Metallurgy

07

D

402/481, 400/505

C07D 249/20 (2006.01) C08F 20/36 (2006.01) C08F 26/06 (2006.01) C08K 5/3475 (2006.01) G02B 1/04 (2006.01) G02C 7/04 (2006.01)

Patent

CA 1232608

ABSTRACT Ultraviolet light absorbing polymer composi- tions comprising copolymers of 2-hydroxy-5-acrylyloxy- phenyl-2H-benzotriazoles of the structural formula: Image wherein X is H or halogen, each R1 is selected from the group consisting of H, CH3 t-alkyl of 4 to 6 carbons and Image wherein R2 is C2-C10 alkylene which may be straight chain or branched, and R3 is H or CH3, provided that one R1 is H, CH3, or t-alkyl and the other R1 is Image 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. The benzotriazole monomers are prepared from the corresponding intermediate phenyl alcohols 2'-hydroxy-5'-acrylyloxyphenyl-2H-benzotriazoles.

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