Siloxane-Polyurethane Coatings

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Novel Non-Isocyanate Siloxane-Polyurethane Coatings (RFT-517) Invention Summary Glycidyl carbamate (GC) functional resins are used due to their high mechanical strength, toughness and abrasion and chemical resistance associated with polyurethanes as well as the convenience of epoxy-amine chemistry. Webster et al. have combined these resins with polydimethylsiloxane to develop self-stratified coatings that yield coatings having low surface energy as well as reduce the hazards of isocyanates. Benefits Combines properties of polyurethanes with ease of epoxy-amine chemistry Decreased hazards associated with isocyanates in current coatings Excellent strength and adhesion with low surface energy Improved durability and adhesion over silicone elastomers Applications in marine ship hull coatings, anti-graffiti coatings, and anti-ice coatings Technology The technology is a siloxane-modified glycidyl carbamate resin and a coating composition utilizing amine crosslinkers. Patents This technology is patent pending with fully preserved PCT patent rights and is available for licensing/partnering opportunities.