A process for the continuous preparation of granules from thermoplastic polyurethane Elastomern

It is proposed a method for the continuous production of granules from thermoplastic polyurethane elastomers, after which difuktionellen initially by reaction of DOLLAR A a) organic diisocyanates, DOLLAR A b) polyhydroxyl compounds having molecular weights of 500 to 8000 and DOLLAR A c) difuktionellen chain extenders having molecular weights of 60 to 400, a tape material 3 is produced in the presence of DOLLAR a d) catalysts and, if DOLLAR a e) auxiliaries and / or DOLLAR a f) additives DOLLAR a at temperatures of 50 to 250 ° C on a rotating carrier belt, which subsequently, in a extruder 9 are melted, homogenised and granulated, wherein the tape material comminuted in a directly arranged at the tape end comminuting and homogenizing 5 and a flange-mounted on the comminuting and homogenizing extruder 5 9 is supplied. The process is particularly suitable for the preparation of granules for extrusion, injection molding or Kalanderware with optional receipt of the opacity as well as for the production of blends.