Nouryon offers the world's largest range of organic peroxide curing agents for thermoset resins, coatings and specialty monomers.

We cover classes such as ketone peroxides, diacyl peroxides, peroxyesters, peroxyketals, hydroperoxides, peroxydicarbonates and peroxymonocarbonates. We are home to the best known brands in the industry, including Cadox and Butanox, which are the highest quality ketone peroxides in the world.

Check out the video animation below to see how the composite curing process with organic peroxides works.

To see the video, please accept the media and social cookie. Cookie settings

We also offer a wide range of auxiliary products, such as accelerators and promoters, to meet your specific production requirements and cure characteristics.

In certain regions our thermoset product line includes inhibitors and release agents.

From filament winding and gelcoats to centrifugal casting and pultrusion, we work diligently to understand your needs and we will work with you on finding new curing systems to fit your needs. Whatever your thermoset application, we are committed to bringing you solutions.

Innovative curing technology

We are always striving for the right solution. For example, in recent years we developed Butanox P-50, which is a fast curing ketone peroxide for gelcoat curing. This innovative, high-reactivity methyl isopropyl ketone peroxide, like Butanox M-50, does not contain any polar compounds and has a guaranteed low percentage of water to secure osmosis-free gelcoats. Butanox P-50, due to its faster surface curing, enables a 15% reduction in styrene emission while delivering higher gloss and a strongly reduced fiber print-through. This saves on sanding and polishing and on the use of barrier coats. Due to the faster cure the time, lamination can be shortened by several hours leading to reduced cycle times and lower production costs. Butanox P-50 is the latest generation of our curing technology for marine applications.

Another of our innovations which changed the market in the recent years are Vanishing Red organic peroxides. These materials provide the benefits of normal dyed peroxides, such as securing peroxide addition and checking of proper mixing, but without the lasting red color that normal dyed peroxides leave in the cured resins. The red color disappears during the curing step leaving the end product colorless! The Vanishing Red feature is available for ketone peroxides, such as Butanox M-50, Butanox LPT-IN, Trigonox 44B, Trigonox 239 and several others. Needless to say we can provide whatever specific Nouryon Vanishing Red peroxide formulation your require.

For each application, we can provide the optimal curing recipe. We can test your raw materials in our application laboratories in Deventer, The Netherlands and provide a definitive recommendation on your curing system performance.

We believe that success is created together and we are committed to creating close partnerships with our customers. It is essential for us to learn what you want to achieve. Are you looking for new curing agents for unsaturated polyester resin composites or gelcoats to optimize your application, improve efficiencies and resolve difficulties? Or are you looking for curing systems with less health-related implications or improved sustainability, such as our Cobalt-free curing systems, to make your composites more sustainable? Whatever your needs are, we will work with you to discuss your requirements.

Your safety is our top priority. That’s why we share our knowledge on the safe handling, storing and use of organic peroxides and accelerators. We provide in-house courses, online training and will help with storage facility design. We provide these services to ensure you work safely with our curing agents for unsaturated polyester and vinyl ester resins. Find out more on our organic peroxides safety page.


Related products