Ophthalmic device made from a radiation-curable prepolymer

摘要

The present invention is related to polymeric articles, preferably ophthalmic devices, more preferably soft contact lenses. In addition, the present invention is related to methods for making a polymeric article, preferably ophthalmic devices, more preferably soft contact lenses from radiation-curable prepolymers. The radiation-curable prepolymer of the invention is prepared by reacting an isocyanate-capped polyurethane with an ethylenically unsaturated amine or an ethylenically unsaturated monohydroxy compound or a mixture thereof, wherein the isocyanate-capped polyurethane is a copolymerization production of: (a) at least one polyalkylene glycol; (b) at least one branching agent having at least three hydroxy groups; and (c) at least one di- or polyisocyanate.