| abstract |
The invention relates to polyurethanes on the basis of a thermoplastic polyurethane and an isocyanate concentrate added to the thermoplastic polyurethane, having a functionality larger than 2 and less than 10, wherein the hard phase portion of the thermoplastic polyurethane ranges between 0% and 5%, and the isocyanate concentrate is added in form of at least 2% per weight relative to the polyurethane PU-1. |