American chemists develop non-toxic refrigerants for chemical companies

Teflon is a brand name for polytetrafluoroethylene,or PTFE.It was stumbled upon accidentally in 1938 by a 27-year-old American chemist named Roy Plunkett while he was trying to develop a non-toxic refrigerant fluid for DuPont,a chemicals company.The strange, white substance that formed inside his lab canister was chemically inert,meaning it wouldn't react with other substances.It also had an extremely low coefficient of friction,making other materials slide right off it.