PTFE is short for PolyTetraFluoroEthylene, which is the chemical term for the polymer (CF2)n, while Teflon is a registered trademark of DuPont in America in 1938, and is now used to mean products manufactured of PTFE resin.
Other trademarks, in addition to DuPont, and the manufacturers of PTFE resins are:
FLUON is a registered trademark of AGF Ltd. AGC Chemicals Americas, Inc. (AGC). They have plants in the U.S., England, and Japan.
DYNEON is a registered trademark of Dyneon, a 3M Company, and producing PTFE resin in Gendorf, Germany. This plant has operated since 1964, founded by Hoechst AG and resin formerly trademarked as HOSTAFLON.
POLYFLON is a registered trademark of Daikin Industries, Ltd.
Daikin Industries Ltd. has been producing PTFE resin since the 1960's in Japan and since 1994 in the U.S as Daikin America Inc.
ALGOFLON is a registered trademark of Ausimont USA, Ltd.
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