PROCESS FOR PRODUCING MOULDINGS

摘要

A novel process for producing mouldings, especially contact lenses, is described, comprising the following steps: a) introducing into a mould a prepolymer containing photo cross-linkable groups that is liquid at room temperature or is readily meltable and is substantially free of solvents; b) initiating the photo cross-linking for a period of < 20 minutes; c) opening the mould, so that the moulding can be removed from the mould. In accordance with the process according to the invention it is possible especially to produce contact lenses having valuable properties.