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VESTENAMER®

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VESTENAMER® – The World’s Most Versatile Rubber Additive

A high‑performance trans‑polyoctenamer (TOR) that boosts processability, compatibility, and quality in rubber and asphalt production.

The smart solution for tire manufacturers, compound developers, rubber processors, and asphalt producers.

What is VESTENAMER®?

VESTENAMER® is an outstanding polyoctenamer used as a rubber additive and reactive plasticizer in a wide range of rubber and bitumen applications. Its outstanding combination of low melting point, very low melt viscosity, and fast crystallization makes it one of the most effective processing aids in rubber compounding available today.

As VESTENAMER® contains double bonds, it is chemically incorporated into the vulcanized rubber network, ensuring stable long-term performance with no migration or blooming.

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VESTENAMER® Rubber Additive from Evonik
VESTENAMER Natural Rubber Compounds
Rubber Solutions from Evonik

Key Benefits of VESTENAMER®

  • Reduces viscosity and mixing time, improving processing efficiency.
  • Acts as a reactive plasticizer, bonding into the rubber network without migration.
  • Improves compatibility in challenging polymer blends such as EPDM/NBR.
  • Enhances dimensional stability and green strength for precise shaping processes.
  • Enables efficient rubber recycling with better dispersion and reduced stickiness.
  • Strengthens rubber‑modified asphalt for more durable and stable road surfaces.

VESTENAMER® - Markets and Applications

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Tire Manufacturing

Unlock smoother mixing, better filler dispersion, and more consistent rubber compounds with VESTENAMER®. This reactive additive boosts processing efficiency and enhances tire component performance - without compromising dynamic properties or durability.

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Road Construction

VESTENAMER® transforms asphalt rubber into a high‑performance, easy‑to‑process solution. It boosts durability, improves sustainability through GTR recycling, and lowers costs - making road construction more efficient and more resilient.

Closeup modern style of car windshield wiper.

Rubber Goods

Unlock better flow, cleaner surfaces, and higher process stability in cable, hose, and profile extrusion. With VESTENAMER®, compounders gain reliable control, higher throughput, and consistent quality - without complicating formulations. Optimize your EPDM or NBR compounds and elevate your extrusion efficiency from the very first run.

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Rubber Recycling

Turn rubber waste into opportunity: With VESTENAMER®, you can boost processing, quality, and sustainability in rubber recycling. Learn how our proven additive enables high‑value products from GTR.

Explore how Evonik's rubber additive VESTENAMER improves the processing and compounding of rubber

Why Choose VESTENAMER®?

VESTENAMER® enhances productivity, flexibility, and sustainability across the rubber and asphalt industries by reducing compound viscosity, improving filler dispersion, and increasing processing efficiency. Its ability to act simultaneously as a reactive plasticizer, rubber processing additive, and compatibilizer enables the creation of more stable, precise, and innovative rubber compounds while supporting the incorporation of recycled materials.

Tire manufacturers benefit from improved dimensional stability and mixing performance, compounders gain greater formulation freedom, and rubber goods producers achieve smoother surfaces and more durable components.

Together, these advantages make VESTENAMER® an outstanding versatile polyoctenamer solution for modern rubber and asphalt applications.

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VESTENAMER® Product

VESTENAMER® 8012

Rubber with unique properties.

FAQ's

Unlike liquid or migrating plasticizers, VESTENAMER® is a reactive polymeric plasticizer. It chemically bonds into the rubber matrix, which prevents migration and ensures long‑lasting performance.

Yes. VESTENAMER® is widely used as a compatibilizer for challenging blends such as EPDM/NBR, rubber–polyolefin mixtures, or compounds containing recycled rubber.

It participates in vulcanization due to its double bonds. Cure times may shift slightly, but crosslink density and mechanical properties generally benefit.

Yes. It stabilizes natural rubber compounds and improves reversion resistance at elevated temperatures.