The Waterborne Symposium 2025

Abstract

"Waterborne polyurethane dispersions (PUDs) are renowned for their exceptional film-forming ability, toughness, and flexibility. However, they are often challenged by poor water resistance and higher production costs. Polyurethane/acrylic hybrid resins offer a balanced, cost-effective solution, combining the strengths of both PUDs and acrylics. These hybrid systems provide enhanced mechanical properties alongside superior water and chemical resistance, making them an ideal choice for high-performance coatings.

This presentation highlights the development of an innovative polyurethane/acrylic hybrid waterborne resin designed to meet both environmental and high-performance requirements. Synthesized in the absence of added solvents, this resin allows for coatings to be formulated at low VOC levels while still offering a balance of hardness, flexibility, and favorable coalescence properties, making it an ideal binder for applications with stringent environmental constraints. Free from amines, the resin also addresses concerns over amine-related issues such as migration and yellowing, while enhancing overall formulation stability. The resin also exhibits good solvent resistance and excellent adhesion to a wide variety of substrates, including metals, plastics, and woods, making it suitable for diverse industrial applications."