Dr. Allen Bulick is the Technical Manager of EPS’ Industrial & Construction groups focusing on polymer design and formulation for a variety of applications including direct to metal, industrial wood, roof coatings, and pressure sensitive adhesives. His background includes formulation science, and small molecule and polymer synthesis across several industries including Coatings, Electronic Materials, and Oil & Gas. Allen graduated with a PhD in Chemical Engineering from Texas A&M University where he studied tissue engineered vascular grafts.
Closing the Performance Gap Between Waterborne Acrylics and Solventborne Alkyds in Thin Film Corrosion Resistance
Solventborne alkyds have historically performed with wide utility in metal protective coatings, offering a high performing 1K system - over a variety of metal substrates. However, their often high volatile organic content (VOC) is a persistent environmental issue along with several performance deficiencies vs. waterborne acrylics including lower early hardness and block resistance, yellowing, and gloss retention in exterior applications. One of the main remaining gaps that has inhibited waterborne acrylics from improved performance over solventborne alkyds in certain segments is corrosion resistance, particularly at lower (<1.5mil) dry film thicknesses (DFTs). To address this unmet need, a new acrylic emulsion capable of <50g/L VOC was developed to deliver corrosion resistance approaching that of alkyds at low film builds. This advancement in performance was achieved while maintaining the traditional advantages of acrylics. This work includes a comparative review of the performance of solventborne alkyds and other commercially available low VOC acrylics.
Paper to be presented at the Coatings Trends & Technologies Conference, Sept 14-15, 2017
Authors: Allen Bulick, Chris LeFever, Glenn Frazee, Matt Mellott
Speaker: Allen Bulick