Herstellung von TPU/Copolymerisat-Mischungen mit Hilfe von Fließverbesserern

A process is claimed for the continuous prodn. of thermoplastic polyurethane (TPU)/copolymer mixts. (TPU/C) from (I) 1-60 wt% (w.r.t. total mixt.) of a thermoplastic copolymer contg. 1-30 wt% (w.r.t. copolymer) of a flow improver, and (II) PU-forming components comprising (A) di-isocyanate, (B) line...

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Hauptverfasser: HOPPE, HANS-GEORG., 42799 LEICHLINGEN, DE, WUSSOW, HANS-GEORG. DR., 40597 DUESSELDORF, DE, BRAEUER, WOLFGANG. DR., 51375 LEVERKUSEN, DE, WINKLER, JUERGEN., 40764 LANGENFELD, DE, HEIDINGSFELD, HERBERT., 50226 FRECHEN, DE, SCHULTE, BERNHARD. DR., 47803 KREFELD, DE, MUELLER, FRIEDEMANN. DR., 41470 NEUSS, DE, MEISTER, WILLI. DR., 41539 DORMAGEN, DE
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Sprache:ger
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Zusammenfassung:A process is claimed for the continuous prodn. of thermoplastic polyurethane (TPU)/copolymer mixts. (TPU/C) from (I) 1-60 wt% (w.r.t. total mixt.) of a thermoplastic copolymer contg. 1-30 wt% (w.r.t. copolymer) of a flow improver, and (II) PU-forming components comprising (A) di-isocyanate, (B) linear OH-terminated polyol with a mol. wt. of 500-5000 and (C) diol or diamine chain extenders with a mol. wt. of 60-500, with a mole ratio of NCO gps. in (A) to NCO-reactive gps. in (B) and (C) = 0.9-1.2. The process comprises feeding components (I) and (II), separately or in combination, into an extruder at one or more inlets and extruding the TPU/C mixt. when PU formation is complete.