Because several monomers capable of propagating the reaction are involved in the production of nitrile rubber the composition of each polymer can vary (depending on the concentrations of each monomer added to the polymerization tank and the conditions within the tank). The tanks are heated to 30–40 ☌ to facilitate the polymerization reaction and to promote branch formation in the polymer. Water serves as the reaction medium within the vessel. Production Krynac 33110 F nitrile rubber balesĮmulsifier (soap), acrylonitrile, butadiene, radical generating activators, and a catalyst are added to polymerization vessels in the production of hot NBR. Buna Rubber was named by BASF A.G., and through 1988 Buna was a remaining trade name of nitrile rubber held by BASF. The raw materials came from the Polish coalfields. The Buna-Werke was a slave labor factory located near Auschwitz and financed by IG Farben. IG Farben plant under construction approximately 10 kilometres (6.2 mi) from Auschwitz, 1942 The first commercial production began in Germany in 1935. Nitrile rubber was developed in 1931 at BASF and Bayer, then part of chemical conglomerate IG Farben. Nitrile rubber is more resistant than natural rubber to oils and acids, and has superior strength, but has inferior flexibility. ![]() Its resilience makes NBR a useful material for disposable lab, cleaning, and examination gloves. Nitrile butadiene is also used to produce moulded goods, footwear, adhesives, sealants, sponges, expanded foams, and floor mats. NBR's stability at temperatures from −40 to 108 ☌ (−40 to 226 ☏) makes it an ideal material for aeronautical applications. ![]() It is also used in the nuclear industry to make protective gloves. NBR is used in the automotive and aeronautical industry to make fuel and oil handling hoses, seals, grommets, and self-sealing fuel tanks. This rubber is unusual in being resistant to oil, fuel, and other chemicals. Trade names include Perbunan, Nipol, Krynac and Europrene. Nitrile rubber, also known as nitrile butadiene rubber, NBR, Buna-N, and acrylonitrile butadiene rubber, is a synthetic rubber derived from acrylonitrile (ACN) and butadiene.
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