Essilor International (Compagnie Generale D'optique)

Marine-Anne Dourges

Dominique Baude

Jean-Pierre Vairon

Philippe Chaumont

Jo&euml;l Steiner

Brigitte Marchin

This invention pertains to a process for the manufacture of a hydrophilic polymeric product, consisting in causing a material comprising a crosslinked silicone polymer matrix and photoinitiator groups dispersed and immobilized within the polymer matrix to swell in a swelling solution comprising a solvent for swelling the crosslinked silicone polymer of the matrix of the material, a photopolymerizable hydrophilic monomer and optionally a crosslinking agent and a proton- or electron-donating coinitiator compound, when the material comprises photoactivable photoinitiator groups and does not comprise proton- or electron-donating coinitiator groups causing the photopolymerizable hydrophilic monomer to diffuse into the swollen material, and polymerizing, by irradiation, the photopolymerizable hydrophilic monomer.

Material based on crosslinked silicone polymer comprising an attached photoinitiator, process for the preparation thereof, hydrophilic polymeric product obtained from this material and process for the preparation thereof, and novel photoinitiators

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Franconville, France

Marine-Anne Dourges