Mitsui Chemicals America, Inc. AURUM™ Thermoplastic polyimide

AURUM™ challenges the conventional wisdom that while polyimides offer exceptional high-heat performance, they are difficult to process. Unlike traditional thermosetting polyimide, from which parts are often machined from stock shapes or thin sheets, AURUM™ is a thermoplastic resin that can be injection molded into high precision parts. The stiffness and stability of these parts in a high temperature environment are key requirements in many automotive, aerospace, and industrial applications. AURUM™ has a glass transition temperature (Tg) of 245oC which is 100oC higher than PEEK resin and exhibits a stable coefficient of thermal expansion at temperatures up to its Tg. AURUM™ has the highest glass transition temperature of any thermoplastic resin. AURUM™ is a special type of thermoplastic polyimide, developed with Mitsui Chemical's technology. Car manufacturers in the United States began using AURUM™ for thrust washers in the powertrain during the late nineties, and within ten years, oil rings made with AURUM™ could be found in heavy construction machinery. Today AURUM™ finds use in the following key automotive applications:> Bearings> Transmission Seal Rings> Transmission Thrust Washers> Turbo Charger Abradable Seal