The invention provides a cross-linkable elestomeric thermoplastic polyurethane that is urea free, isocyanutrate free, oxazolinyl free, functional radically-polymerizable pendant group free and having terminal functional radically-polymerizable groups at both ends, and thermoset polyurethanes obtained...http://www.google.es/patents/US8168260?utm_source=gb-gplus-sharePatente US8168260 - Cross-linkable thermoplastic polyurethanes