  {|style="border: 1px solid; float: right; width: 250px;" !colspan="2" style="text-align: center; background: #ccc;"| 320px|nylon nylon 6,6 320px|nylon 6,6 unit |- |density |1.15&nbsp;g/cm3 |- style="background:#eee;" |electrical conductivity (Ï) |10â12&nbsp;s/m |- |thermal conductivity |0.25&nbsp;w/(mÂ·k) |- style="background:#eee;" |melting point |463â624 k 190â350 Â°c 374â663 Â°f |} nylon is a generic designation for a family of synthetic polymers known generically as aliphatic polyamides, first produced on february 28, 1935, by wallace carothers at dupont's research facility at the dupont experimental station. nylon is one of the most commonly used polymers.palmer, r. j. 2001. polyamides, plastics. encyclopedia of polymer science and technology.  key representatives are nylon-6,6; nylon-6; nylon-6,9; nylon-6,10; nylon-6,12; nylon-11; nylon-12 and nylon-4,6. ==overview== thumb|160px|wallace carothers nylon is a thermoplastic,vogler, h. (2013), wettstreit um die polyamidfasern. chemie in unserer zeit, 47: 62â63.  silky material, first used commercially in a nylon-bristled toothbrush (1938), followed more famously by women's stockings ("nylons"; 1940) after being introduced as a fabric at the 1939 new york world's fair. nylon is made of repeating units linked by amide bonds and is frequently referred to as polyamide (pa). nylon was the first commercially successful synthetic thermoplastic polymer. there are two common ways of making nylon for fiber applications. in one approach, molecules with an acid (-cooh) group on each end are reacted with molecules containing amine (-nh2) groups on each end. the resulting nylon is named on the basis of the number of carbon atoms separating the two acid groups and the two amines. these are formed into monomers of intermediate molecular weight, which are then reacted to form long polymer chains. nylon was intended to be a synthetic replacement for silk and substituted for it in many different products after silk became scarce during world war ii. it replaced silk in military applications such as parachutes and flak vests, and was used in many types of vehicle tires. nylon fibers are used in many applications, including clothes fabrics, bridal veils, package paper, carpets, musical strings, pipes, tents, and rope. solid nylon is used in hair combs and mechanical parts such as machine screws, gears and other low- to medium-str
1935_introductions American_inventions Commodity_chemicals Dielectrics DuPont Plastics Polyamides Synthetic_fibers