Patent ID: 6197842
Filing Date: 2001-03-06
Classification: C07C,C08G,C08L,G02B,Y10S

Abstract:
A process for the manufacture of a hydrophilic polymeric product, comprising:a) 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:1) a crosslinking agent; and2) a proton- or electron-donating coinitiator compound, when the material comprises photoactivable photoinitiator groups and does not comprise proton- or electron-donating coinitiator groups;b) causing the photopolymerizablc hydrophilic monomer to diffuse into the swollen material; andc) polymerizing, by irradiation, the photopolymerizable hydrophilic monomer.