Trigonox 141

Product Line Organic peroxides

Trigonox® 141 is an initiator for (co)polymerization of styrene and a curing agent for UP and vinylester resins.

  • Brand

  • Chemical family

    Organic peroxide
  • CAS number

  • Physical form

  • Regional availability

    Africa, Asia, Asia Pacific, China, Europe, Global, India, Latin America, Middle East, North America, Oceania
  • Chemical name

    2,5-Dimethyl-2,5-di(2-ethylhexanoylperoxy) hexane
  • Molecular drawing

    Organic peroxide
  • Applications

    Trigonox® 141 can be used for the market segments: polymer production and thermoset composites with their different applications/functions. For more information please check our website and/or contact us.

Market Segments

Polymer production

Detailed description

In suspension polymerization processes, Trigonox® 141 can be used for the polymerization of styrene at approximately 90°C. Trigonox® 141 has an activity comparable with Dibenzoyl peroxide (Perkadox L-W75). However, the bifunctional Trigonox® 141 gives higher molecular weights of the polymer. Applying the same molecular weights means a reduction of polymerization time.


  • Polymerization initiator


  • Polystyrene
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Thermoset composites

Detailed description

Trigonox® 141, 2,5-Dimethyl-2,5-di(2-ethylhexanoylperoxy)hexane, is a di-functional perester which is used for the curing of unsaturated polyester resins at high temperatures. Trigonox® 141 is preferred for the curing of UP resin based Hot Press Molding formulations (such as DMC and BMC) in the temperature range of 120 - 160°C. Trigonox® 141 is preferably used in combination with a low reactive peroxide like Trigonox® C or Trigonox® BPIC-C75 and an optimal low Profile SMC formulation for the production of HPM parts with a Class A surface at short molding times.


  • Curing agent


  • Hot press molding,
  • Pultrusion
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Get in touch!

For more information about Trigonox 141, please contact our technical experts. We look forward to hearing from you.

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