Trigonox 239

Product Line Organic peroxides

Trigonox® 239 is a promoted cumyl hydroperoxide: best cure system for vinylester resins.

  • Brand

  • Chemical family

    Organic peroxide
  • CAS number

  • Physical form

  • Regional availability

    Europe, North America
  • Molecular Weight

  • Chemical name

    Cumyl hydroperoxide
  • Molecular drawing

    Organic peroxide
  • Applications

    Trigonox® 239 is a peroxide mixture based on cumene hydroperoxide. Trigonox® 239 is especially developed for the cure of vinylester or phenacryl resins in combination with a cobalt accelerator. Trigonox® 239 can successfully be used instead of generally applied keton peroxides like Butanox LPT with the following features: no ‘gassing’ after the peroxide is mixed in the preaccelerated vinylester resin. This phenomenon is very often recognized as a disadvantage of ketone peroxides in vinylester resins. The use of an amine accelerator is in general not necessary to achieve a good cure, a fast cure in thin coatings and laminates up to a thickness of approx. 6 mm and a low peak exotherm in thick laminates.

Market Segments

Thermoset composites

Detailed description

Trigonox® 239 is a peroxide mixture based on cumyl hydroperoxide, specially developed for curing vinylester resins in combination with a cobalt accelerator.


  • Curing agent


  • Vinylesters
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Get in touch!

For more information about Trigonox 239, please contact our technical experts. We look forward to hearing from you.

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