PPO is a raw polymer that is naturally opaque and demonstrates superior high performance properties. PPO can be substantially modified for demanding applications by integrating rubber impact modifiers and other alloying agents to the original formulation. Standard PPO is difficult to process, however, when the right blend is achieved, plastic injection molding and manufacturing couldn’t be easier. Noryl® is often referred to as a type of PPO, but in fact, it is a blend of both PPO and polystyrene.