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A novel bio-based material that can be reacted with amines to form polyurethanes using a non-isocyanate route, and thus are safer than current systems.
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Invention Summary There has been growing interest in bio-based resins due to the foreseeable limit of fossil feedstocks and increasing environmental concern. Additionally, polyurethanes are widely used commercially but rely on petroleum-based materials and utilize isocyanate, which is hazardous. Webster et al. have developed a novel bio-based material that can be reacted with amines to form polyurethanes using a non-isocyanate route, and thus are safer than current systems. Specifically, the resins contain a high number of cyclic carbonate groups synthesized from the reaction of epoxidized sucrose fatty acid ester resin with carbon dioxide. Further, these resins are prepared from epoxidized sucrose fatty acid esters from different vegetable oils and can be fully or partially carbonylated. Benefits Cost efficient Made from sustainable materials Properties are competitive with current commercial systems Safer than current systems as it utilizes a non-isocyanate route Applications in coatings, composites, and adhesives Technology The technology includes the bio-based cyclic carbonate functional resins, methods of producing the resins, and curable coating compositions using the resins.