Patent ID: 7973095
Filing Date: 2011-07-05
Classification: A61L,C08F

Abstract:
1. A process for producing a polymer, comprising polymerizing one or more monomers in solution (monomer solution), said monomer solution containing a photoinitiator or a redox initiator or both to initiate the polymerization, wherein said monomer solution experiences a temperature maximum during polymerization, treating said monomer solution with electromagnetic radiation no earlier than after reaching the maximum temperature of polymerization, wherein when ultraviolet (UV) radiation is applied to initiate polymerization of the monomer solution and reach a temperature maximum during polymerization, electromagnetic radiation having a wavelength longer than a UV wavelength is employed after reaching the temperature maximum, and subsequently crushing and drying the gel obtained, and wherein when the photoinitiator is present in the monomer solution, it acts to initiate the polymerization.