Addition Polymers -Three kinds of intermediates: ·Free radicals ·Carbocations Carbanions Examples of addition polymers: Polypropylene plastics Polystyrene foam insulation ·Poly(acrylonitrile),Orlon®fiber -Poly(methyl a-methacrylate),Plexiglas Chapter 26 5Chapter 26 5 Addition Polymers ▪ Three kinds of intermediates: ▪ Free radicals ▪ Carbocations ▪ Carbanions ▪ Examples of addition polymers: ▪ Polypropylene plastics ▪ Polystyrene foam insulation ▪ Poly(acrylonitrile), Orlon® fiber ▪ Poly(methyl -methacrylate), Plexiglas®