| 摘要 |
High refractive index copolymers suitable for use in ophthalmic devices are disclosed. The copolymers comprise a) two or more monomers of the structure:wherein: X is H or CH3;m is 0-10;Y is nothing, O, S, or NR wherein R is H, CH3, CnH2n+1(n=1-10), iso-OC3H7, C6H5, or CH2C6H5;Ar is any aromatic ring which can be unsubstituted or substituted with H, CH3, C2H5, n-C3H7, iso-C3H7, OCH3, C6H11, Cl, Br, C6H5, or CH2C6H5;a crosslinking monomer having a plurality of polymerizable ethylenically unsaturated groups, andb) a total of about 5 mole % or less of one or more monomers of the structure:wherein: X is H or CH3;W is -CH3 or (CH2=C(-X)-C(=O)-); andn is such that the weight average molecular weight is approximately 600-1000 if W is -CH3 and approximately 400-1000 if W is (CH2=C(-X)-C(=O)-).
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