Are TGIC-Free Powder Coatings Right For You?

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Durability and weather-resistance are non-negotiable requirements when specifying powder coatings for applications such as heavy equipment, agricultural vehicles, outdoor lighting and architectural products, playground equipment, and recreational goods.

 
For years, triglicydyl isocyanurate crosslinkers (TGICs) have been employed in exterior, polyester-based powder coating applications to provide those required characteristics. TGIC cross-links the film within a powder coating.  At a certain temperature in the coating process, it reacts with the polyester resin to create a durable, weather-resistant film that adheres to a wide range of substrates.
 
A commercial alternative to TGIC powder coatings was developed in the early ’90s using beta hydroxyalkylamide (HAA), an alternative crosslinker that reacts with the same or improved versions of polyester resin used with TGIC. HAA (TGIC-free) delivered a durable, UV-resistant finish similar to TGIC powder coatings, but until the late ’90s, it remained more of a technical curiosity than a regularly specified product.
 
Is TGIC-free technology right for your application today? Often, the choice comes down to whether a finisher is multi-national. TGIC-free powder coatings provide a true global platform. For finishers that operate facilities in countries where TGIC is already regulated, the choice to use TGIC-free powder coatings may be made globally for the sake of product consistency and to simplify purchasing, storage and handling.


And certainly, coatings manufacturers that offer technical support to customers should be consulted to help finishers understand the options available and to assist in making the choice between technologies. It goes beyond recognizing the complexities of the parts that need to be coated and where those parts will be used. The choice also involves reviewing a finisher’s current coating line capabilities and equipment, production schedule requirements and—if important—its customer’s specification process. 
 
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