MULTISTEP UV PROCESS TO CREATE SURFACE MODIFIED CONTACT LENSES

摘要

A process for modifying the surface of a silicon-containing polymer is presented, the process comprising the steps of: forming a silicon-containing polymer containing a photoinitiator in a first polymerization reaction mixture; forming a second polymerization reaction mixture comprising the silicon polymer, a polymerization monomer, a free radical initiator system and a solvent system; and polymerizing the monomer in the second reaction mixture to form a surface modification of the silicon-containing polymer. Such a process is useful in controlling the hydrophilicity of a surface, and can be applied to prepare medical devices such as contact lens having a wettable, biocompatible surface.