Abstract: Hydrogel materials used in the manufacture of biocompatible medical devices, for example, hydrogel materials having desirable physical properties for use as a contact lens. A composition contains at least one vinyl containing monomer, a methacrylate(acrylate) monomer, methacrylate (acrylate) prepolymers, crosslinking agents and monomers having the structure as shown in Formula 1: where R1 is a vinyl functionality capable of radical polymerization with specific preference for N-vinyl lactam derivatives and R2 is a zwitterionic functionality. The materials utilize a two-phase polymerization strategy.

Abstract: A composition includes at least one siloxy-based (meth)acrylate monomer or prepolymer, at least one additional methacrylate monomer, UV, and Visible light blocking agents and one or more crosslinking agents. The final product results in a highly wettable material that possesses physical properties such as a low modulus of elasticity and high oxygen permeability without the need for a non-reactive solubilizing agent and that are free of cyclic and linear siloxanes.

Abstract: Hydrogel materials used in the manufacture of biocompatible medical devices, for example, hydrogel materials having desirable physical properties for use as a contact lens. A composition contains at least one vinyl containing monomer, a methacrylate(acrylate) monomer, methacrylate (acrylate) prepolymers, crosslinking agents and monomers having the structure as shown in Formula 1: where R1 is a vinyl functionality capable of radical polymerization with specific preference for N-vinyl lactam derivatives and R2 is a zwitterionic functionality. The materials utilize a two-phase polymerization strategy.

Abstract: A composition includes at least one siloxy-based (meth)acrylate monomer or prepolymer, at least one additional methacrylate monomer, UV, and Visible light blocking agents and one or more crosslinking agents. The final product results in a highly wettable material that possesses physical properties such as a low modulus of elasticity and high oxygen permeability without the need for a non-reactive solubilizing agent and that are free of cyclic and linear siloxanes.