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Teflon
Book article from: The Columbia Encyclopedia, Sixth Edition
Teflon trade name for a solid, chemically inert polymer of tetrafluoroethylene...CF 2 . Stable up to temperatures around 572°F (300°C), Teflon is used in electrical insulation, gaskets, and in making low-adhesion...
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Collagen Periurethral Injection
Encyclopedia entry from: Gale Encyclopedia of Surgery: A Guide for Patients and Caregivers
...silicon base suspended in a viscous gel called Macroplastique. Teflon paste, introduced in the 1970s, initially gave good results...reported problems with excessive scarring and with the migration of Teflon particles to other tissues in the body. The collagen used in...
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vinyl plastics
Book article from: The Columbia Encyclopedia, Sixth Edition
...2 C=CH-OOC-CH 3 ). Polyethylene may be considered the simplest of the vinyl polymers, and polyvinyl chloride is an important member of this group. Polytetrafluoroethylene, or Teflon, is also sometimes classed as a vinyl polymer.
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Plastics
Encyclopedia entry from: UXL Encyclopedia of Science
...today to refer primarily to artificial materials. Substances such as nylon, Styrofoam ™ , Plexiglass ™ , Teflon ™ , and polyvinyl chloride (PVC) are examples of such materials. Thermoplastic and thermosetting plastics Plastics...
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Sling Procedure
Encyclopedia entry from: Gale Encyclopedia of Surgery: A Guide for Patients and Caregivers
...sling, has many forms due to advances in the types of material used for the sling. Some popular types of sling material are Teflon (polytetrafluoroethylene), Gore-Tex ® , and rectus fascia (fibrous tissue of the rectum). The surgery can be...
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Polymer
Encyclopedia entry from: The Gale Encyclopedia of Science
...condensation, in which a small molecule byproduct is also formed. Addition polymers include polyethylene, polypropylene, Teflon, Lucite, and rubber. etc. Condensation polymers include nylon, Dacron, and Formica. The importance of polymers is evident...
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Radioactive Implants
Encyclopedia entry from: Gale Encyclopedia of Medicine, 3rd ed.
...implant that requires an operation under general anesthesia to place narrow, hollow stainless steel needles through the tumor. Teflon tubes are inserted through the needles, and the needles are then removed. After the patient returns to his or her room, radioactive...
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Dupont Company
Encyclopedia entry from: Gale Encyclopedia of U.S. Economic History
...gas, chemicals, synthetic fibers, polymers, and various other products. DuPont brand names — such as nylon, Teflon, Lycra, and Mylar — are part of the everyday vocabulary of people across the world. At the end of 1998 DuPont employed...
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Atherosclerosis
Encyclopedia entry from: Encyclopedia of Public Health
...levels of cholesterol or glucose, as well as high blood pressure and smoking, cause changes in the endothelium (normally the "teflon" coating of the vessel), which then becomes sticky. It begins to express on its surface "adhesion molecules," which are...
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polytetrafluoroethene
Book article from: World Encyclopedia
polytetrafluoroethene ( PTFE ) Chemically inert, solid plastic, known also by the trade names Teflon and Fluon . PTFE is used as a heat-resistant material for heat-shields on spacecraft, as a non-stick coating on cooking...
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