NOVEL COPOLYMERS FORMED FROM THREE COMPONENTS AND INTRAOCULAR LENSES MADE THEREOF

摘要

The invention relates to a foldable intraolcular lens material, characterized in that the material is composed of the following repeat units [I], [II] and [III], and it comprises 60 - 80 wt % of [I], 10 - 30 wt % of [II] and 5 - 20 wt % of [III], based on the total weight of 100%. In formula [I] R¹ represents hydrogen atom or alkyl, R² represents alkylene which can be substituted by hydroxyl group, in addition, the alkylene chain can contain oxygen atom also. In formula [II], R³ represents formula [IIa] [IIb] [IIc],in which R⁵, R⁶, R⁷and R⁸ represent hydrogen atom or alkyl respectively, m, n, p and q are integers from 1 to 4 or a single bond and R⁴ is hydrogen atom or alkyl. In formula [III] R⁹ is hydrogen atom or alkyl and R¹⁰ is alkyl.