Helping steel stay cool
An intumescent system is a combination of various compounds that in the event of fire react together as a result of the temperature increase to form a carbon foam. This foam attains a thickness of 10 to 100 times of the originally applied coating and insulates the substrate material through its low thermal conductivity. For steel-framed structures in particular this can be essential, because they can lose their structural stability during fires, when temperatures exceed 500 °C. Examples of such buildings are airports, shopping centers, hospitals and office complexes.
As a principal supplier of the key ingredient ammonium polyphosphate, Clariant has comprehensive experience in raw materials for intumescent coatings and in the development of intumescent coating formulations, either water or solvent based.
The Exolit® AP Products used are fine, white powders based on ammonium polyphosphate.
Service for our customers
Clariant has been a leading supplier of phosphorus based flame retardants for more than 30 years. We are in a position to support our customers to develop suitable intumescent coating formulations.
In our laboratory at Knapsack, Germany, we can compare the performance of a range of different formulations using standard fire tests. Thereby, we can support our customers in developing new formulations for meeting new standards or challenges in fire safety requirements.
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