PURE OR MIXED GRAFTED THERMOSETTING THERMOPLASTIC POLYURETHANE, AND THERMOSET POLYURETHANE OBTAINED AFTER CROSSLINKING

摘要

The invention concerns a pure or mixed grafted thermosetting thermoplastic polyurethane obtainable by direct grafting on a pure or mixed thermoplastic polyurethane, of a crosslinking agent selected in the group comprising diisocyanate trimers capable of initiating the crosslinking reaction at a temperature higher than 85 DEG C and blocked isocyanates, whereof the reactivation temperature is higher than 85 DEG C.