Patient status

US 2008/0108784, JP 2013/049619A, US 2015/0141540, US 2015/0144017

Commercial rights

Sole Rights / Non-exclusive





Available to license


Project number


Current polymers used to bond explosives can be used to make the munition more insensitive to accidental detonation and/or form the material in to a specific shape. The addition of these polymers, however, reduces the energy density. This new innovation using polyphosphazenes improves energetic performance whilst also improving stability.

Although classified as non-explosive, a baseline polyphosphazenes has class-leading energy content. This property, combined with its superior stability, make it ideal for use as an alternative explosive binder — especially if conformance with Insensitive Munitions standards is required. A 15-year research programme conducted by the Atomic Weapons Establishment (AWE) has resulted in a polyphosphazene that gives improved performance and safety.


  • High Performance — polyphosphazenes used as a replacement explosives binder improves energetic performance.
  • Reduced Hazard — polyphosphazenes inherent stability results in insensitive/low hazard explosives.
  • High Thermal Stability — a high activation temperature provides extended resistance to inadvertent detonation (e.g. exposure to fire).


The synthetic flexibility of polyphosphazenes and their wide range of unique properties can be potentially utilised in numerous other applications, such as fire-retardant materials.

  • Rocket propellants
  • Explosives
  • Pyrotechnics

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