Sequential Esterification-Diels-Alder Reactions for Improving Pine Rosin Durability within Road Marking Paint.

Pine rosin, which is derived from resin, a natural product, has demonstrated potential as a road marking binder. Although pine rosin has an excellent shinning property, it has some limitations, such as instability and color change. To tackle these issues, modified rosin has been developed through sequential esterification and Diels-Alder reactions, and it has shown better properties than untreated rosin.