Graffiti resistant polyurethanes have been developed that do not contain surface energy modifiers such as fluorine or silicone compounds. These coatings are made from a two-component polyurethane that includes polyacrylate polyols and water dispersible polyisocyanates. The use of two components allows one to make highly crosslinked polymers with minimal organic co-solvent. In addition, it is possible to make these coatings with a matte finish, as well as, a semi-gloss or high-gloss finish. The paper discusses reasons for the outstanding graffiti resistance even though the coatings do not have low surface energy.

Subject
Surface finishing, Films, Volatile organic compounds, Water, Coatings, Atomic force microscopy, Roughness, Surfaces, Polyurethanes, Polyurethane coatings, Film formation, Paints, Resins
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2009
Association for Materials Protection and Performance (AMPP)
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