Improving the water resistance of water-borne alkyd emulsion binders

 
"Innovations in architectural coatings are currently driven by sustainable solutions, focusing on low VOC, durable options, and reducing carbon footprints as key parameters. Waterborne alkyd emulsion is one of the preferred technologies to meet these market needs. Among the various requirements such as UV resistance, hardness, and dirt pick-up resistance, achieving water resistance remains one of the most challenging. Exterior substrates are exposed to severe weather conditions throughout their lifespan, leading to issues like whitening, blistering, and surfactant leaching. Relying on the polymerizable surfactant technology, a new generation of alkyd emulsions has been developed and exhibits excellent water resistance. The relationship between alkyd emulsion composition, polymerizable surfactant and their water resistance has been studied to optimize the paint formulation. Other coating applicative performances are studied. Examples of formulation optimization will be presented and discussed."