Petrarch PS406 Methacryloxypropyl polysiloxane United Chemical Technologies Silicone (Si) ADHESIVE >> Radiation Curing (UV/EB) Because silicones are oxygen-permeable, flexible and have inert properties they are used in numerous medical devices. Industrial silicone applications are typically coupling agents for bonding elastomers to polar substrates, adhesive systems and silicone lubricants. Methacryloxypropyl-functional silicones undergo the same general chemistry as the vinylsilicones, but possess several significant reactivity differences. They copolymerize readily with methacrylate monomers and undergo light activated polymerization. methacryloxypropyl polysiloxane Polysiloxane with methacryloxypropyl at branch point and monoacrylate functionality. Used in adhesive systems. Copolymerizes with methacrylate monomers and undergoes light activated polymerization.