Methyl Isobutyl Ketone Peroxide (MIBKP): The Ideal Choice for Enhancing Thermoset Resin Process Efficiency
Nov 25, 2024|
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Ava, the team leader of Evergreen Chemicals OP expert database and the brand director of Nouryon, participated in the drafting of OP safety standards and is well versed in the global supply relationship of peroxides.
AVA
Nouryon Brand DirectorMIBKP is a highly efficient peroxide product widely utilized in thermoset resin applications. Currently, it is exclusively produced by Nouryon and United Initiators, with all products being imported. There are no domestic production facilities in China. Nouryon’s corresponding model, Trigonox HMa, is well-recognized for its superior performance.
This article highlights key features and applications of MIBKP.
Basic Information on MIBKP
Chemical Name:Methyl Isobutyl Ketone Peroxide (MIBKP)
CAS Number:37206-20-5
UN Number:3105
Safety Characteristics of MIBKP
Flash Point: 48°C
Self-Accelerating Decomposition Temperature (SADT): 55°C
Recommended Storage Temperature: 25°C
MIBKP does not require refrigeration, making it ideal for factories without cold storage facilities. Despite its good thermal stability, it remains a hazardous chemical and must be handled and stored in strict compliance with international regulations (UN3105).
Active Oxygen Content
Active Oxygen Content: 8.4%
Density: 0.99 g/cm³ (at 20°C)
These properties make MIBKP a reliable and reactive solution for a variety of industrial processes.
Key Applications of MIBKP
Pultrusion Processes for Thermoset Resins
MIBKP is suitable for curing reactions within a temperature range of 60–150°C, significantly enhancing pultrusion speed and reducing production cycles. For complete curing, Trigonox® HMa can be combined with low-activity peroxides such as Trigonox 22-B50 or Trigonox C.
Production of Flat and Corrugated Panels
When paired with specialized accelerators like Accelerator NL-49P, MIBKP is highly effective in the production of fiberglass-reinforced plastic (FRP) panels. Its efficient and uniform curing process improves surface finish while minimizing volatile organic compound (VOC) emissions.

Market Landscape
The global supply of MIBKP is currently dominated by Nouryon and United Initiators. In the Chinese market, Nouryon holds a relatively higher market share due to its product quality and reliability.
Packaging
MIBKP is available in 30-liter HDPE drums, with a net weight of 25 kg per drum, fully compliant with international transportation standards (UN3105).
MIBKP is a vital additive for enhancing the efficiency and quality of thermoset resin applications, particularly in pultrusion processes and panel production. Its safety features, high active oxygen content, and excellent performance make it an indispensable solution for industrial manufacturers.
For more information or inquiries, contact Evergreen Chemicals, your trusted supplier of high-quality chemical solutions.








