Polycarbonate, also known as PC, has been mass-produced since 1958.
-	It is a thermoplastic polycondensate.
-	Applications: Used to make optical lenses, windows, medical items, CD's, and power tool housings. Also used in truck cabs.
-	General properties: It has excellent strength and toughness. It possesses good dimensional stability, dielectric strength, flame retardancy, and impact resistance (highest among transparent rigid materials). It is susceptible to stress cracking with aromatic solvents, and is difficult to machine.
-	Trade Name: Lexan, Makrolon.