Tetrafluroethylene is ethylene with the four hydrogen replaced with fluorine atoms. It is resistant to acids and is used to make non-stick frying pans. Teflon was also discovered by accident.
Fluorine is very electronegative and bonds very tightly to the carbon.
Since the compound is very stable nothing bonds to it and gives rise to its non-stick property. Stainmaster carpets are also based on using Teflon to make the carpet fibers stain resistant. It is also used as a dry lubricant. Polytetrafluorethylene Better known as Teflon, it was developed at Dupont in 1938. It is made of the bifunctional monomer CF2.