Polysulfone describes a family of thermoplastic polymers. These polymers are known for their toughness and stability at high temperatures. They contain the subunit aryl-SO2-aryl, the defining feature of which is the sulfone group. Polysulfones were introduced in 1965 by Union Carbide. Due to the high cost of raw materials and processing, polysulfo...
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http://en.wikipedia.org/wiki/Polysulfone
any of a class of resinous organic chemical compounds belonging to the family of polymers in which the main structural chain most commonly consists ...
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http://www.britannica.com/eb/a-z/p/91
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