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PTFE also known under Teflon (a brand owned by Dupont Industry) is a synthetic chemical, sometimes sold as an enhancing and protective component in paint protective sealants, cleaner sealants or waxes. Manufacturer of car care and marine care products advertise the presence of Teflon or PTFE as a positive and protective property in their product line, promising an extremely long lasting protective effect on the paint. Unfortunately, this claim is dubious and irresponsible.
“If nothing sticks to Teflon, how does Teflon sticks to the pan?”
The answer is: “IT DOESN’T”. The bonding between Teflon and the pan is mechanical. The surface of the pan is etched and the Teflon is applied at temperatures over 640° F. Teflon simply dries in the etched pan and mechanically adheres to it.
In order to protect any surface with Teflon, it has to be applied at a very high temperature (640 F). Therefore applying a spray-on product containing Teflon or mixing the Teflon with water does not effectively bond the Teflon to the surface it is being applied to. The chemical formulation necessary to make a good bond cannot be completed at low temperatures.
Even if it was possible to bond Teflon to the paint, Teflon would give a dull, flat appearance on the painted surface, since it is a dull product. So if a large enough quantity of Teflon was included in a product and if Teflon could bond to the surface at low temperature, the result would still be a dull paint. This makes the entire procedure of applying Teflon or PTFE paint care product all but useless.
Even the manufacturer of Teflon does not recommend using it as a protective additive in car care or paint care products. DuPont Chemicals (The producer of Teflon®) has stated: “The addition of a Teflon® Flour polymer resin does nothing to enhance the properties of a car wax. We have no data that indicates the use of Teflon® is beneficial in car waxes.”
Perfluorooctanoic Acid, PFOA, is one of the key components in manufacturing of Teflon. This synthetic chemical has found its way to everyone blood and creates serious environmental and health issues for all life on our planet.
All new man-made chemicals must undergo rigorous testing to be marketed in Europe and DuPont's Teflon is about to be included in the long list of chemicals that may not be marketed in Europe. Canada is the first country to enforce a total limitation of usage and marketing of Teflon.
The U.S. Environmental Protection Agency (EPA) has at last initiated a review of the potential health risks and exposure routes of PFOA and its most commonly used salts, including ammonium perfluorooctanoate (commonly referred to as C8), which is used in Teflon production.
So, even IF Teflon could protect (which it doesn't) a painted surface and make it shiny (which it doesn't), the danger of including this chemical in our daily life would be great enough to justify other alternative with better result and performance.