Copomeras obtaining TPU mixtures by flow improvers.

PROCEDURE FOR OBTAINING CONTINUOUS A MIXTURE copolymer TPU, tucking into an extruder I) 1 A 60% by weight, relative to the total mixture, ONE (CO) thermoplastic polymer, containing from 1 to 30 wt% , relative to (CO) thermoplastic polymer, of an improver liquid and ii) the following polyurethane-forming components A) DIISOCYANATE ORGANICO B) POLYOL linear with terminal hydroxyl group with a molecular weight of 500 to 5000 C) chain extenders diol or diamine having a molecular weight of 60 to 500 ONE TO ONE OR MIXED IN ONE OR MORE PLACES OF POWER, the molar of the NCO groups in A) rELATIONSHIP compared with reactive groups isocyanate in B) and c) 0.9 to 1.2, and after finishing polyurethane formation MIXED SALE TPU / polymer extruder.