Polytetrafluoroethylene trade names

Polytetrafluoroethylene decomposition products thermal decomposition of the fluorocarbon chain in air leads to the formation of oxidized products containing carbon, fluorine and oxygen. Because these products decompose in part by hydrolysis in alkaline solution, they can be quantitatively determined in air as fluoride to provide an index of exposure. No TLV is recommended pending determination of the toxicity of the products, but air concentration should be minimal. (Trade names Algoflon, Fluon, Teflon, Tetran.)... 

Darvic, Elvic, Geon, Koroseal, Marvinol, Mipolam, Opalon, Pliofex, Rucon, Solvic, Trulon, Velon, Vinoflex, Vygen, and Vyram are all trade names for poly(vinyl chloride) manufactured by different companies. Some polymers are better known by their trade name than their generic name. For instance, polytetrafluoroethylene is better known as Teflon, the trade name held by DuPont. 

Polyethylene terephthalate [25038-59-9] (8) is a polyester produced by the condensation polymerization of dimethyl terephthalate and ethylene glycol. Polyethylene terephthalate sutures are available white (undyed), or dyed green with D C Green No. 6, or blue with D C Blue No. 6. These may be coated with polybutylene adipate (polybutilate), polyydimethylsiloxane, or polytetrafluoroethylene [9002-84-0]. The sutures are distributed under the trade names Ethibond Exel, Mersilene, Polydek, Silky II Polydek, Surgidac, Tevdek II, Polyester, and Tl.Cron. 

Polytetrafluoroethylene suture is composed of expanded polytetrafluoroethylene (ePTFE), resulting in a porous microstructure having longitudinally oriented nodes and fibrils. The suture is sold by W. L. Gore Associates, Inc. under the trade name Gore-Tex Suture. 

The central part of the electrochemical HDH reactor is the use of solid polymer electrolyte (SPE). A typical membrane material belongs to the fully fluorinated polyethene-based family polytetrafluoroethylene (PTFE) (known by the trade name Teflon), shown in Fig. 13.1. 

Polytetrafluoroethylene (PTFE) is a fully fluorinated polymer, which was discovered by chance in 1938 by Roy Plunkett. Later, the polymerization process was initiated at high pressure with peroxide. In 1941, DuPont received the patent on PTFE, therefore it is often denoted colloquially by Teflon , the original trade name of DuPont PTFE (ref DuPont). Other examples of PTFE trade names used by manufacturers are PTFE Dyneon , formerly ffostaflon (ret Dyneon), and Gore-Tex (ret Gore). 

Often polymer names are cumbersome and one may want to use an abbreviated letter code, as are listed in Table 1.1. The shorter the letter code, the easier are accidental duplications possible. It is, thus, again necessary to identify a letter code with the lUPAC name. For example, the full statement that should identify the polymer PTFE in a publication is PTFE = polytetrafluoroethylene (source-based name), poly(difluoromethylene) (structure-based name). Teflon (trade name of the DuPont Company). 

Polytetrafluoroethylene (PTFE) n. The oldest of the fluorocarbon-resin family discovered in 1938 by R. J. Plunkett, developed by DuPont and marketed under the trade name Teflon . It is made by polymerizing... 

Teflon te- flan n. (1) A polymer of fluori-nated ethylene. Very inert, and in the form of a film or an impregnator, used for its heat-resistant and non-sticking properties. (2) Trade name for fluorocarbon resins, including polytetrafluoroethylene, per-fluoropropylene resin, and co-polymers, manufactured by DuPont. 

The basic monomer unit is a totally fluorinated ethylene molecule (—CF —CF —). It is well known under its common trade name Teflon. It was discovered in 1938 by Roy J. Plunkett a DuPont scientists. Industrially, polytetrafluoroethylene is obtained from several consecutive of steps. First, chloroform reacts with hydrofluoric acid to yield chlorodifluoromethane. The chlorodifluoromethane is then pyrolized at 800-1000 C to yield the monomer, i.e., tetra-fluoroethylene (CF2=CF2, TFE) which is purified and polymerized in aqueous emulsion or suspension using organic peroxides, persulfates or hydrogen peroxide as catalysts. The simple polymerization reaction is as follows. 

Biomedical Applications. Dillon (114) synthesized IPN membranes from polytetrafluoroethylene (PTFE) and poly(dimethyl siloxane) (PDMS) (see Perfluorinated Polymers, Polytetrafluoroethylene Silicones). These flexible membranes are used for a variety of medical purposes, especially second-degree bum care. These materials are commercially available under the trade name Silon. The PDMS component rapidly transports body fluids away from the bum site, while the PTFE provides mechanical strength. The PTFE is also waterproof, so that when the woimd area is washed, water beads up on the film. An additional valuable feature is that the Aims are highly transparent, so that the doctor can observe the wound area easily, making early treatment of any infection or other problem possible. 

By trade name or common natne. The trade or proprietary name is assigned by the product manufacturer, and they emphasize merchandise or variety, for example, the trade name of polyamide is nylon other trade names include, for example, Teflon (polytetrafluoroethylene) and Celluloid (nitrocellulose). Names such as organic glass (polyfmethyl methacrylate)), Bakelite (phenolic resin), and electric jade (urea formaldehyde resin) have also been widely used. 

Many polymer films have been examined as capacitor dielectrics but those principally used are polyethylene terephthalate, polystyrene, polycarbonate, polytetrafluoroethylene, polyimides and polypara-xylylene. A number of these materials are more familiar by their trade names ... 

Polytetrafluoroethylene (PTFE) is a crystalline translucent solid polymer with a high molecular weight ranging between 10 and 10 g mol. It is prepared from the monomer C2F4 by polymerization in aqueous medium and is obtained as fine powder. A number of trade names exist for PTFE. Thus it is often referred to as Teflon (DuPont), Hostaflon (Dyneon), Fluon (ICI), Hahn (AUied Chemical) or Fluoroplast (Ftoroplastoviye Tekhnohgii JSC) [1, 2]. 

Polytetrafluoroethylene (having the trade name Teflon) belongs to a family of polymers called the fluorocarbons. 

Trade Names ALT-173 PS134 Polytetrafluoroethene. See Polytetrafluoroethylene Polytetrafluoroethylene... 

Fluoropolymers are ubiquitous and have special properties. The best known is PTFE (polytetrafluoroethylene), which is widely used as a coating for non-stick cooking ware, under its trade names Teflon or Fluon. Gore-Tex is made from expanded PTFE, and is used in outdoor clothes as it allows the fabric to breathe, whilst still retaining excellent water repellency. Similar polymers are used to give water and stain resistance to textiles, for example, Scotchguard ". ... 

The development of most polymers have occurred at large chemical companies. One of the leaders in polymer development has been DuPont In the United States many polymers are known generally by their DuPont trade names. Perhaps the best example of this is polytetrafluoroethylene (PIPE) known to the public as Teflon. A historical timeline of polymer development is shown in Table 1.1. The Nobel Prizes related to polymers are shown in Table 1.2. ... 

---