Polysulfone

Polysulfones are a family of high-performancethermoplastics. These polymers are known for their toughness and stability at high temperatures. Technically used polysulfones contain an aryl-SO₂-aryl subunit. Due to the high cost of raw materials and processing, polysulfones are used in specialty applications and often are a superior replacement for polycarbonates.

Three polysulfones are used industrially: polysulfone (PSU), polyethersulfone (PES/PESU), and polyphenylsulfone (PPSU). They can be used at temperature of −100–200 °C (−148–392 °F) and are used for electrical equipment, vehicle construction, and medical technology. They are composed of para-linked aromatics, sulfonyl groups, and ether groups and partly also alkyl groups. Polysulfones have outstanding resistance to heat, oxidation, hydrolysis, aqueous media, and alkaline media, and they have good electrical properties.