10.3 New Low Viscosity Polyester Polyols for High Solids 2K Polyurethane Coating
(Room 240-242)
10 Apr 18
3:00 PM
-
3:30 PM
Tracks:
Session 10: Polyurethanes II, Session 10: Protective Coatings
Formulators are required to comply with increasingly stringent volatile organic compound (VOC) regulations and, at the same time, maintain the performance characteristics expected from the coating system. Traditionally, there have been three ways to reduce VOC’s in coatings: by moving toward waterborne formulations, making higher solid coatings, or using “exempt” solvents. Waterborne technology greatly reduces the VOC content, but commonly lags behind the performance of solvent borne coatings, while high solid systems are typically more expensive per gallon. Systems containing exempt solvents can only be used from a regulatory point of view in specific areas of the globe. In order to overcome these challenges, Stepan has developed a new set of polyester polyols with low room temperature viscosities that reduce VOC content in coating formulations and provide excellent coating characteristics. This paper demonstrates the use of these polyols in 2K polyurethane solvent borne low VOC systems and describes their performance characteristics in preventative maintenance and floor coatings.