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Product overview

Kepstan® is a Polyetherketoneketone (PEKK) CoPolymer and is in the family of Poly Aryl Ether Ketone (PAEK) polymers. PEKK is synthesized in various formulations with individually unique properties. The PEKK formulations are expressed by the ratio of Terephthaloyl (T) to Isophthaloyl (I) moieties used during the synthesis that created the polymer. The T/I ratio affects PEKK’s melt point glass transition temperature and crystallization kinetics.

Geographic availability
  • Africa
  • Asia Pacific
  • Europe
  • Latin America and the Caribbean
  • Middle East
  • Northern America
  • Oceania
News & Events

Next events


Sur/Fin 21

From November 2nd to November 4th 2021

TCF Center

Kynar® PVDF and Kynar Flex® PVDF are used to manufacture pipes, tubing, fittings, valves, pumps, ...

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Thermoforming Conference

From September 20th to September 22nd 2021

DeVos Place

Arkema is proud to introduce Kepstan® PEKK to the world of thermoforming. Kepstan® PEKK is a ...

2021 Rapid Logo in 4x3.png

Rapid + TCT

From September 13th to September 15th 2021

McCormick Place

Arkema offers high performance materials for all major additive manufacturing processes – UV ...


ConnecX 65th Annual IAPD Convention

From August 16th to August 19th 2021


Kynar® PVDF and Kynar Flex® PVDF are strong and chemically resistant fluoropolymers available in ...

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Flagship Applications

Chemical name : Poly ether ketone ketone
Common name : PEKK
Trademark : Kepstan
Abbreviation : PEKK