Category overview

Intumescent Systems

Based on 11 products - Last update on the Jun 26, 2025

Intumescent systems typically appear as liquid coatings or powder additives that integrate into protective coatings. Their key advantages include effective thermal insulation, low weight compared to traditional fireproofing materials, and compatibility with various coating formulations. They are crucial for enhancing fire resistance in structural steel, wood, and industrial applications, where they help meet fire safety standards while maintaining aesthetic and protective properties. 

The demand for advanced intumescent technologies continues to grow. These systems are available in water-based and solvent-based formulations. Compliance with global fire safety standards, such as ASTM E119 and EN 13381, ensures that modern intumescent systems provide reliable fire protection.

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Exolit® AP 418 (TP)

by Clariant

Exolit® AP 418 (TP) by Clariant is a halogen-free flame retardant with favorable environmental and health profile. It is suitable as an acid donor for solvent-based intumescent coatings thanks to its low water solubility. It offers longer fire resistance time (FRT) compared to conventional solutions by exhibiting an earlier on-set temperature. <br> <ul style="padding-left: 40px;"><li>It is non-hygroscopic, biodegradable and non-flammable. </li> <li>It is used in thin metal sheet surfaces (e. g. aluminum), plastic materials, composite materials (carbon- or glass-fiber reinforced materials, wood plastic composites), polyurethane, and textiles. </li> <li>Exolit® AP 418 (TP) can be used in transport applications to obtain good fire, smoke and toxicity results (EN 45545). </li></ul>
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Exolit® AP 742

by Clariant

Exolit® AP 742 by Clariant is an ammonium polyphosphate. Acts as a non-halogenated flame retardant. Develops its effectiveness through phosphorus/nitrogen synergism. Differs in its mode of action from chlorine or bromine containing flame retardants by achieving its effect through intumescence. The flame retarded material foams on exposure to flame. The carbon foam layer so formed protects the polymer through its heat-insulating effect and reduces further oxygen access. Exolit® AP 742 is used in intumescent coatings.
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Exolit® AP 740 F

by Clariant

Exolit® AP 740 F by Clariant is a non-halogenated flame retardant based on ammonium polyphosphate which develops its effectiveness through phosphorus/nitrogen synergism. Suitable both for coatings and reinforced materials. It differs in its mode of action from chlorine or bromine containing flame retardants by achieving its effect through intumescence and has compared to Exolit® AP 740 smaller particles. <br> <ul style="padding-left: 40px;"><li>It exhibits low smoke density and can be used alone or in combination with synergists like aluminum hydroxide in composites. </li> <li>By its addition in unsaturated polyester gel coats, important standards like DIN EN 13501-1 or DIN 5510 S4 SR2 ST2, EN 45545-2 can be passed. </li> <li>It is suitable for coatings applications.</li> <li>Exolit® AP 740 F is very effective in methacrylate-styrene dissolved unsaturated polyester resins. </li> <li>It has shelf life of 12 months. </li></ul>
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Intumescent Systems