Basf Aktiengesellschaft

Elastogran Gmbh

Gerhard Bittner

Gerhard Zeitler

Dietrich Lausberg

Hans D Zettler

Rolf Steinberger

Friedhelm Lehrich

Frank Werner

Rainer Ohlinger

Christa Hackl

Lothar Metzinger

Knud Faehndrich

Artur Roeber

Hans M Rombrecht

Karl-Heinz Baumann

Bernd Lukassen

Self-extinguishing thermoplastic polyurethanes contain, as flameproofing agents, one or more organic phosphates and/or one or more organic phosphonates, preferably as a mixture together with melamine derivatives.

Self-extinguishing thermoplastic polyurethanes and their preparation

A thermoplastic molding composition was composed of

Thermoplastic polyurethane molding composition

In order to prepare thermoplastic polyurethane elastomers

Two-stage process for the preparation of thermoplastic polyurethane

Antistatic and/or electrically conductive thermoplastic polyurethanes contain carbon black whose surface area determined by the BET method is from 600 to 1200 m.sup.2 /g, have a dibutylphthalate absorption number of 300 to 450 cm.sup.3 /100 g, a pour density of less than 250 kg/m.sup.3, and an average particle size less than 50 nm. Incorporation of the carbon black into the thermoplastic polyurethane produced by the continuous sheet method takes place at temperatures under the primary melt peak for the crystalline rigid segments, measured by means of differential calorimetry, preferably in an extruder. The products are suitable for preparing films for flat heating elements, antistatic hoses, cables, and profiles.

Antistatic or electrically conductive thermoplastic polyurethanes:

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Diepholz, Germany

Gerhard Bittner