Flexible, high refractive index polymers
AssigneeNestle S.A.
InventorsFarhad H. Namdaran, Albert R. LeBoeuf
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Abstract
High refractive index copolymers comprised of monomers having the formula: ##STR1## wherein X is H or CH.sub.3 ; m is 0-10; Y is nothing, O, S, or NR wherein R is H, CH.sub.3, C.sub.n H.sub.2n+1 (n=1-10) iso OC.sub.3 H.sub.7, C.sub.6 H.sub.5, or CH.sub.2 C.sub.6 H.sub.5 ; Ar is an aromatic ring which is unsubstituted or substituted with H, CH.sub.3, C.sub.2 H.sub.5, n-C.sub.3 H.sub.7, iso-C.sub.3 H.sub.7, OCH.sub.3, C.sub.6 H.sub.11, Cl, Br, C.sub.6 H.sub.5 or CH.sub.2 C.sub.6 H.sub.5 ; and n is 1-5; and a cross linking monomer having a plurality of polymerizable ethylenically unsaturated groups are disclosed. Intraocular lenses made of the copolymers which can be inserted into an aphakic eye through a relatively small incision are also disclosed.
Claims1
A copolymer comprising 2-phenylethyl acrylate at a concentration of about 65 wt. %;
- 2-phenylethyl methacrylate at a concentration of about 30 wt. %;
- 1,4-butanediol diacrylate at a concentration of about 3.2 wt. % and 2-(-3'-methallyl-2'-hydroxy-5'-methylphenyl)benzotriazole at a concentration of about 1.8 wt. %.
Dependencies are inferred from the claim text.