Patent ID: 6096846
Filing Date: 2000-08-01
Classification: C08F,G02B

Abstract:
An ultraviolet absorbing base material for forming an intraocular lens used in place of a crystalline lens in an eye in which a vinyl copolymerizable monomer comprising 2-hydroxyethyl methacrylate in an amount of 80 to 90 wt % based on the base material and a benzotriazole ultraviolet absorbing monomer represented by formula (I) are copolymerized: ##STR12## wherein X represents H or a halogen, R.sub.1 is H or an alkyl group having 1 to 6 carbon atoms, R.sub.2 and R.sub.3 each represents a linear or branched C.sub.1 -C.sub.10 alkylene group and R.sub.4 represents H or CH.sub.3.