Polyphenylene Oxide (PPO)

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Polyphenylene Oxide (PPO) 2016-12-06T05:35:24+00:00

Polyphenylene Oxide (PPO)

 
Russell Hobbs 'Forgettle', 1973 - body in PPO (later changed to polyformaldehyde)

The basic PPO polymer produced by the coupling of phenolic monomers was patented in 1964 by General Electric Plastics who introduced modified forms as the Noryl® range in 1966. Raw PPO was expensive and difficult to process but ready blending with polymers such as polystyrene gave an acceptable balance of properties. Most references to PPO refer to such blended polymer products.

PPO thermoplastics offer properties between common thermoplastic polymers and higher engineering types, e.g. polycarbonates. PPO can be moulded by a range of processes such as injection, extrusion and extrusion blow moulding, thermoforming and foaming. Ease of electroplating, painting and welding add to a wide range of applications.

PPO products are characterised by exceptional moisture resistance, high dimensional and thermal stabilities, good flame resistance and high electrical resistance properties.

PPO products have provided valuable contributions in water pumps, automotive and electrical components, power tool housing, appliance casings and as foams in superior foam sandwich structures.