What is Teflon?
Teflon is a brand name and registered trademark of E.I. DuPont de Nemours and Company, Dupont for short. Teflon is a non-stick, stain resistant, and durable material used in a variety of products. This versatile material, which most citizen associate primarily with cookware such as frying pans, muffin tins, and cake pans, has been in existence for more than 40 years. Teflon however, is used for more than just cookware it is also used in personal care products such as lens coatings for eyeglasses and nail hardeners for nail polish, as a stain protector in fabrics used to make clothing, to make carpets and other textiles stain-resistant, and in a amount of automotive and industrial applications together with wiper blades, nautical coatings, and in the semi-conductor and biotech manufacturing processes.
Nail Polish Brand
Teflon prides itself on being a brand that citizen trust and rely on for many of their every day needs. Teflon's multi-layered technology is what sets it apart from the competition. The first layer applied to the exterior of the pan or other piece of cookware is the adhesion or rugged primer layer. The second layer is the mid-coat or protective layer, and the exterior layer is called the top coat, which is what makes Teflon so easy to cook with and to clean up. These three layers are what makes Teflon so durable.
The History of Teflon
Dupont, based in Wilmington, Delaware, holds all of the patents relating to Teflon, the first of which was obtained in 1945. The story of Teflon begins nearly ten years before that however, on April 6, 1938. A chemist by the name of Dr. Roy J. Plunkett was working in one of Dupont's laboratories in New Jersey and discovered Teflon by accident. While conducting experiments on tetrafluoroethylene, a substance connected with Freon® refrigerants, he noticed that a freezing sample had polymerized or plasticized into an additional one substance called polytetrafluoroethylene (Ptfe), a slippery substance that is inert under practically any chemical condition.
The substance was given the brand name Teflon and products using the Teflon trademark were man-made and marketed to the group one year later in 1946. The rest is history as they say. Subsequent patents in the Teflon "family", which go by the name of fluoropolymers (a group of organic compounds containing fluorine and carbon that are not trademarked), contain Fep Teflon, introduced in 1960; Tefzel® Etfe in 1970; and Pfa Teflon, in 1972.
Are condition Risks connected with Teflon?
In a word, yes, but not necessarily in the way you might think. Teflon has recently come under fire by buyer groups and individuals as a potential source of condition risks, primarily as a supervene of the confusion in the middle of Teflon, the brand name, and Pfoa. Pfoa is the synthetic chemical called perfluorooctanoic acid and is also known as C-8, the name it was originally man-made under by 3M Corporation. Contrary to favorite belief, Teflon and Pfoa are not synonymous in any way and should not be viewed as such. In fact, according to Dupont, using these names interchangeably violates trademark laws.
Since Teflon is only a brand name, Teflon in and of itself is not a condition risk. As a buyer who uses cookware with Teflon non-stick coatings, you may or may not be at risk for adverse condition effects due to degradation of the non-stick coating under sure conditions. If you are man who works in a factory that commerce Teflon and during the manufacturing process are exposed to Pfoa, a chemical used in the manufacturing process for Teflon, the acknowledge is equally ambiguous based on current information.
The Us Environmental safety department (Epa) in an Oppt (Office of Pollution arresting and Toxics) Fact Sheet issued August 2004 maintains that it doesn't believe there is any surmise for consumers to stop using Teflon products. The Epa also states that Pfoa is commonly present in humans at very low levels; however, a specific source of Pfoa is not known as it is used in the originate of many separate products among them fire fighting foams; personal care and cleaning products; and oil, stain, grease, and water repellent coatings on carpet, textiles, leather, and paper. Nor is it known why or how humans have acquired Pfoa in their bodies.
While Pfoa has been connected to birth defects and cancer in laboratory studies conducted on animals, it is less sure as to whether it or Teflon non-stick coatings present a condition hazard when it comes to human beings. according to the Environmental Working Group, using a Teflon non-stick coating pan to cook in may cause flu-like symptoms such as headache, chills, and fever, if it is overheated to 680 degrees Fahrenheit, due to fumes that are emitted at these temperatures, which are hotter than those ordinarily used in cooking or for example if the waters boils away and the pan is left on the stove. Researchers at the Food and Drug management (Fda) have also found trace amounts of Pfoa when Teflon non-stick coatings on cookware have been subjected to conditions of ultimate testing methods, which again are not typical of how most consumers use these products.
It appeared that Dupont knew this could happen but declined to disclose it to the group until fairly recently. As a result, the Epa's opinion has been gradually changing. In March 2005, the Epa sent letters out to eight companies, together with Dupont, asking them to begin phasing out the use of Pfoa in the manufacturing process and to wholly eliminate Pfoa by the year 2015. In December 2005, the Epa ordered Dupont to pay .5 million in civil penalties for withholding condition and safety data pertaining to the degradation of Pfao in Teflon non-stick coatings. The monies will be used to fund further investigate on the effects of Pfoa on humans. Dupont expects to sell out Pfoa emissions by 99% in its U.S. Manufacturing facilities by 2007. In early 2006 an Epa scientific advisory board indicated that Pfoa might for real be a likely carcinogenic substance, although the Epa has not yet added Pfoa to its list of carcinogens.
As with many other chemical substances whose effects on humans are not well known, the acknowledge to whether Teflon non-stick coatings in cookware present condition risks to human beings requires further research.
Teflon Frying Pans: Is Your health at Risk?ร้านยาทาเล็บที่à¹�นะนำ : ขายยาทาเล็บ ยี่ห้ภEssie สีนู้ด สีà¸่à¸à¸™ ขายยาทาเล็บ ยี่ห้ภOPI Essie Nicole by OPI
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