IMPEKK® is designed for permanent surgical implants such as spinal, cranial, orthopedics, dental and is extremely suitable for Additive Manufacturing.

Poly-Ether-Ketone-Ketone chemical structure

properties of impekk®

  • Elastic modulus close to cortical bone
  • X-ray translucency
  • Chemical inertness
  • Outstanding compressive strength
  • Toughness
  • Sterilizable

The presence of an additional ketone group gives IMPEKK® polymer greater polarity and allows a better acceptance of functional fillers, providing a wide range of formulation choices for implantable medical device manufacturers. IMPEKK® polymer is composed of ether (flexibilizing) and ketone (rigidifying) groups. The more ketone groups there are, the higher the Tg (Glass Transition temperature) and the better the mechanical properties. IMPEKK® is a copolymer that includes terephthaloyl and isophthaloyl units. This modularity allows fine tuning of crystallization rate and melting point temperature (Tm).

applications for impekk® polymer

  • Particularly designed for Additive Manufacturing
  • Amenable to all polymers processing techniques

seqens unique offer

IMPEKK® granules for testing & development

IMPEKK® 1G-T-testing grade granules

IMPEKK® 1G is suitable for conventional technologies such as Injection molding and extrusion.

IMPEKK® 1G is currently available as testing and development grades.


IMPEKK® polymer filament for testing

IMPEKK® 3D-F-T testing grade filament

IMPEKK® 3D-F is very suitable for processing by Additive manufacturing FFF (Fused Filament Fabrication technology).

IMPEKK® 3D-F is currently available as testing and development grades.


  • Biocompatibility studies on IMPEKK® should be available from H2 2023 to support our client’s developments
  • Implantable grade IMPEKK 3D as Granules or Filament will be available from 2024  
PEKK-based Spinal Cage Implant
Printed by Kumovis

If you are interested in our IMPEKK® polymer for implantable medical application, please contact us for more information!

Our location

Address PCAS, Route de Lassay
Business Line Lubbricant Additives, Fine Chemicals
Phone +33 2 33 37 50 20
Market Specialty Ingredients
More information

Surface: 120, 000 m²


Capabilities: 190 m³ of ISO 9001 reactors and kilo-lab

Flagship technologies: Most standard organic synthesis reactions (large volumes)