Teflon is a trade name of polytetrafluoroethylene, PTFE. It is formed by the addition polymerization of
2 2 tetrafluoroethylene, CF =CF (tetrafluoroethene). PTFE is distinguished by its complete resistance to attack by
virtually all chemicals and by its slippery surface. It maintains its physical properties over a large temperature range,
-270E to 385EC. These properties make it especially useful for components that must operate under harsh chemical
conditions and at temperature extremes. Its most familiar household use is as a coating on cooking utensils.