New Epoxy/Polysiloxane Hybrid Resin for Graffiti-Resistant Coatings
Vincent Hickman, Technical Service Manager, Hexion Inc.
Graffiti is a significant issue, and despite regulations restricting the sale of aerosol paints and legal penalties for vandalism, the “tagging” of railcars, bridges, overpasses and private property with graffiti costs $15-18B USD annually for the removal and repainting of structures in the U.S. alone. This presentation will introduce a new epoxy/polysiloxane hybrid resin that performs as a permanent, non-sacrificial, graffiti-resistant coating. Starting-point formulations (clear and white enamels) were tested using alcohol (IPA), mineral spirits and a commercial graffiti-remover solution. The performance results of these hybrid coatings were compared to commercial anti-graffiti coatings. The results indicate that this new hybrid resin provides superior graffiti resistance, improved gloss retention, superior color retention and reduced dirt pick-up. Other potential end-use applications such as higher-temperature coatings and new construction protective coatings will be briefly discussed to illustrate the versatility of this high-value resin.