Clariant Marks 50 Years in Fire Protection

Clariant is highlighting the role of its Exolit™ AP range of ammonium polyphosphate-based flame retardants as part of a broader approach to passive fire protection in modern construction. These flame retardants are a key component in intumescent coatings, which expand in response to heat to form an insulating char layer, helping protect structural materials such as steel and engineered wood during fire exposure.

Now in its 50th year, the Exolit AP line has evolved in response to tightening environmental and regulatory standards. Clariant reports that its latest formulations exclude substances such as melamine, classified as a Substance of Very High Concern (SVHC) in Europe, while maintaining performance characteristics such as minimal smoke production and strong char formation. The technology is used in structural steel coatings, insulation systems, and fire-safe cabling, among other applications.

According to the company, demand for passive fire protection continues to grow as buildings become taller, more complex, and increasingly reliant on sustainable materials. Clariant positions its APP-based solutions as part of a long-term shift toward environmentally responsible fire safety systems that meet both performance expectations and evolving compliance requirements.

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