Powder coatings for indoor applications from renewable resources and recycled polymers

Powder coatings have been prepared using a sustainable polyester synthesized by combining the chemical recycling of polymers, recovered from post-consumer waste streams, with the use of bio-based monomers. The coatings obtained using this environmentally friendly approach have been compared with those based on a traditional polyester synthesized using nonrenewable resources. The results demonstrate that the new eco-friendly resin presents application performances that in some cases are superior compared to those of the commercial, petro-derived coating. This behavior, combined with the sustainable character of the new technology, gives important advantages in comparison to the conventional resins and opens new possibilities in market segments where the current powder coating has limited applications.