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AssigneeLubrizol Advanced Materials, Inc.
InventorsMarie-Anne Persoons, Jacques P.E.J. Horrion, Dirk De Vos, Yves Schellekens
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Thermoplastic polyurethanes, including those based on aliphatic isocyanates, are of great interest for industrial applications that require UV-stability. To overcome the low reactivity of some diisocyanates a catalyst is usually added to accelerate urethane formation. In most applications, organotin-based compounds are used, however, due to growing concerns about the toxicity of some of these organotin compounds, their use is being restricted and the need for alternative catalysts is growing. The thermoplastic polyurethanes described herein are made using tin-free catalysts while retaining the UV-stability and other properties required for many industrial applications.
A thermoplastic polyurethane composition comprising the reaction product of:
A process of preparing a thermoplastic polyurethane composition comprising the step of:
A method of maintaining the ultraviolet stability of a thermoplastic polyurethane composition while reducing the toxicity of the thermoplastic polyurethane composition, comprising the steps of:
Dependencies are inferred from the claim text.