Ophthalmic lens polymers

Details Ophthalmic lens polymers Ophthalmic lens polymers

1997-08-08

1999-07-13

Yoon, Tae

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

5262925, 526313, 526320, 351159, 351160R, C08F22020, C08F21204, G02C 702

Patent

active

059228210

ABSTRACT:
High refractive index copolymers suitable for use in ophthalmic lenses, such as foldable intraocular lenses, are disclosed. The high refractive index copolymers of the present invention consist essentially of (i) one or more monomers having the structure: ##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 any aromatic ring which can be 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 (ii) one or more monomers having the structure: ##STR2## wherein: X, X' is independently H or CH.sub.3 ;
n, n' are independently 2 or 3;
m, m' are independently 2-25;
Ar, Ar' are independently as defined above;
a is 1 or 2; and
Z is C(CH.sub.3).sub.2 or S(.dbd.O).sub.2.

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