Powder Coatings offer many advantages to the market, including low VOC emissions, the ability coat irregular shapes and excellent film properties, but they can be limited in their applicability to heat-sensitive substrates due to the high temperatures required to cure the coating. This can be especially challenging for applications with multi-component parts, which become limited to cure at the lowest acceptable substrate temperature. Many traditional powder coatings cannot maintain acceptable performance if cured at lower temperatures. To overcome this challenge, Stepan has developed a carboxyl functional polyester with a wide range of time/temperature curing options to fit a variety of applications. This presentation will show the versatility of the technology to deliver the necessary performance and appearance even when cured as low as 100 degrees C.In addition to allowing heat-sensitive applications to be powder coated, this technology also provides the potential for decreased energy usage by reducing the curing temperature needed. The material can also be used at standard processing temperatures, which can allow for faster line speeds, thus equaling increased production.
Alison Kroviak, Research Chemist, Stepan