Cadox L-50a VRN

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Organic peroxide

Special purpose MEKP with VR for curing tooling Gel Coats & promoted unsaturated polyester resins at room temperature.

  • Product name

    Cadox L-50a VRN
  • Chemical family

    Organic peroxide
  • CAS number

  • Physical form

  • Regional availability

    Latin America, North America
  • Chemical name

    Methyl ethyl ketone peroxide
  • Applications

    Cadox L-50a VRN is a special purpose catalyst for the room temperature cure of promoted unsaturated polyester resins. CADOX L-50a VRN has a low hydrogen peroxide content which provides improved curing of vinyl ester resins. Cadox L-50a VRN also has a high MEKP dimer content which may provide reduced cure times in some resin systems.  Cadox L-50a VRN offers all the advantages of a red MEKP, except red parts. The VR series of products includes a red indicator system that virtually disappears during cure. The red is there when you need it, but not in the finished product. Visualize hot & cold spots, schrinkage problems, mass effects, thermal effects of core materials and dead flow zones in applications like vacuum infusion. Key features are: indicates initiator presence, monitor mixing, monitor cure by color, no more RED parts.

Market Segments

Thermoset composites

Detailed description

Highly reactive MEKP formulation used for curing promoted unsaturated polyester resins at room temperature.


  • Curing agent