Teflon is the trade name for polytetrefluoroethylene, which was discovered in 1938 by American chemist Roy J. Plunkett. He discovered the material accidentally while working to develop a non-toxic refrigerant from gaseous tetrafluoroethylene. Instead, he came up with a waxy white powder which indicated that the molecules polymerized or combined with each other.
Plunkett went on to develop a method for producing the powder commercially. Teflon was first used for producing gaskets and valves needed in the development of the atomic bomb. The first Teflon-coated muffin tins and frying pans were sold in 1960. Teflon is now used for artificial cornea, substitute bones for chin, nose, hip, and knee joints and other anatomical plants.