Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

Evonik VESTENAMER 8012 Toughener

Evonik VESTENAMER 8012 Toughener is a reactive liquid polyolefin elastomer designed to enhance impact resistance and flexibility in thermoset resins. It compatibilizes with epoxies, polyurethanes, and vinyl esters without sacrificing thermal stability or chemical resistance. Its low viscosity enables easy processing and uniform dispersion, improving toughness while maintaining tensile strength and dimensional stability—ideal for composites, adhesives, and high-performance coatings.
  • evonik vestenamer 8012 toughener_a69b37d7
  • evonik vestenamer 8012 toughener_a69b37d7

Features Of Evonik VESTENAMER 8012 Toughener

  1. Reactive liquid polyolefin with terminal vinyl groups for covalent incorporation into thermoset matrices.

  2. Significantly improves impact resistance and fracture toughness without compromising glass transition temperature (Tg) or thermal stability.

  3. Low viscosity enables excellent processability and homogeneous dispersion in epoxy, unsaturated polyester, and vinyl ester resins.

  4. Enables formulation of high-performance composites with enhanced delamination resistance and fatigue durability.

  5. Halogen-free and REACH-compliant, supporting sustainable composite material development.

Typical Applications Of Evonik VESTENAMER 8012 Toughener

  1. Aerospace structural composites requiring certified toughness and damage tolerance.

  2. Wind turbine blade laminates where interlaminar shear strength and crack propagation resistance are critical.

  3. Automotive lightweighting components including battery enclosures and under-hood parts.

  4. High-performance marine hulls and decks demanding superior impact resilience in humid environments.

  5. Industrial tooling and molds requiring dimensional stability alongside mechanical robustness.

Specifications Of Evonik VESTENAMER 8012 Toughener

Chemical TypeReactive liquid polyoctenamer (cyclo-olefin-based)
Product FormFree-flowing, low-viscosity liquid
AppearancePale yellow to colorless, transparent liquid
Primary ApplicationsToughening agent for epoxy, vinyl ester, and unsaturated polyester resins
Key FeaturesTerminal vinyl functionality, low volatility, no volatile organic compounds (VOCs)
BenefitsImproved impact strength, reduced microcracking, extended pot life vs. traditional rubber modifiers
Storage StabilityStable for ≥12 months at 25 °C in sealed containers under inert atmosphere
Regulatory StatusREACH registered; compliant with EU RoHS Directive (2011/65/EU)


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