Thermoplastic POLYIMIDE Powder

Quality characteristics:

Thermoplastic Polyimide (TPI) powders can be either amorphous or semi-crystalline thermoplastics. In general, TPI powders can be used for compounding, compression molding, and other powder-based processing techniques. The parts and components produced from TPI powders possess high rigidity, excellent creep resistance and low thermal expansion. In addition, TPI parts have high electrical breakdown strength and excellent radiation resistance.

We offer Mitsui Chemicals’ thermoplastic polyimide powder AURUM ™. This TPI is the only Polymer with a Tg of 245 °C and therefore exhibits high temperature stiffness properties. AURUM ™ has better properties under high temperature than PEEK and the heat resistance is comparable to PAI. Compared to other thermoplastic resins AURUM ™ generates less outgassing and therefore has less contamination (good for PCBs & sensors). AURUM ™ can be used in powder coating to form a unique, thin, pinhole-free insulation layer for complex copper parts without toxic chemicals.

  • High temperature Stiffness
  • Coefficient of expansion
  • Thermoplastic
  • Sliding properties
  • Outgas properties
  • Radiation resistance
  • Creep resistance
  • Chemical resistance
Mitsui Chemicals AURUM


TPI is mainly used in aerospace, as well as in the electrical industry. TPI's applications include wire and cable insulation, high performance connectors and accessories, on-road and off-highway gearing washers. Also, gaskets, semiconductor plasma chamber components and containment systems, jet engine components, high temperature films, bearing cages, gears, diaphragms, stickshapes, and composites.

The advantages of AURUM ™ are the extremely high glass transition temperature (Tg) of 245°C and its outstanding mechanical and chemical properties across a wide range of temperatures. Compounders and other converter that are able to melt-process polymers at elevated temperatures can use AURUM ™ for performance washers, ball-bearing cages, dry bearings, seals and gears - where excellent mechanical & tribological properties and temperature resistance are paramount. It can be injection molded into structural parts, this is more economical compared to other processes such as thermosetting or machining. Powder coating of copper parts is one of the main applications as a thin, unique pinhole-free insulation layer is formed without toxic chemicals.

In addition, this thermoplastic polyimide powder AURUM ™ is usable for advanced coatings, and clean applications such as semiconductors due to trace amounts of outgas and metallic impurities. Used in aviation, automotive and other industries, AURUM ™ can be compounded and converted like any other thermoplastic.

To sum up, AURUM ™ is used in applications such as

  • Washers
  • Seal rings
  • Bearings
  • Pistons
  • Structural components of aircraft engines
  • Resin for CFRP
  • Electric wire coating, powder coating

We offer:

BIEGLO is the distributor of Mitsui Chemicals’ AURUM ™.

We offer PD450 TPI (mid molecular) powders and PD400 (low molecular) TPI powders with a particle size of 25 μm.

Download AURUM ™ TPI Overview on available grades

Besides powder, AURUM ™ can also be supplied granules, film, fiber or matrix composite material.

Download AURUM ® TPI Overview on available grades 

The thermoplastic polyimide AURUM ™ has no food- nor medical-use certifications.


+++ AURUM ™ should not be used for military purposes. Therefore, if you are interested in buying please fill out the following pdf form, to provide us with the needed information: +++


Thermoplastic POLYIMIDE Powder