Basf Aktiengesellschaft

Basf Se Corporation

Basf Schwarzheide Gmbh

Ruediger Krech

Frank Prissok

Oliver Steffen Henze

Udo Rotermund

Manfred Genz

Renate Hempel

Rolf Steinberger

Frank Schaefer

Heinz Bollmann

Wolfgang Scholz

Norbert Pohlmann

Peter Horn

Sven Lawrenz

Guenter Scholz

Joern Duwenhorst

Gerhard Lehr

Christoph Bahr

Christian Beckmann

Horst King

Karin Scheffer

Marian Mours

Carsten Guenther

Horst Papenfuss

Marc Hansen

Paul Sellig

Juergen Mueller

Heinrich Niermann

Gitta Egbers

Katja Hackmann

Klaus Techritz

Peter Eberhardt

A thermoplastic polyurethane is obtainable via reaction of the following components A, B, C, and, if appropriate, D and E

Thermoplastic polyurethane with reduced formation of deposit

The present invention relates to antistatic, thermoplastic polyurethane comprising ethylmethylimidazole ethyl sulfate, to a process for production of antistatic, thermoplastic polyurethane comprising ethylmethylimidazole ethyl sulfate, and to the use of ethylmethylimidazole ethyl sulfate for the production of antistatic, thermoplastic polyurethane.

Thermoplastic polyurethane with antistatic properties

A process for the preparation of thermoplastic polyurethane by reacting (a) isocyanates with (b) compounds reactive toward isocyanates and having a molecular weight (M) of from 500 to 10 000 g/mol and (c) chain extenders having a molecular weight of from 50 to 499 g/mol, if appropriate in the presence of (d) catalysts and/or (e) conventional additives, wherein the chain extender mixture consisting of a main chain extender (c1) and one or more co-chain extenders (c2) is used and the thermoplastic polyurethane prepared has a rigid phase fraction of greater than 0.40, the rigid phase fraction being defined by the following formula: 

Thermoplastic polyurethanes

Thermoplastic polyurethane (i) comprising from 20% by weight to 70% by weight of isocyanate dissolved in the thermoplastic polyurethane, based on the total weight of the thermoplastic polyurethane (i) comprising the isocyanates.

Isocyanate-containing thermoplastic polyurethane

The present invention relates to a process for the continuous production of thermoplastically processable polyurethane elastomers, by metering a polyisocyanate (A), a proportion of 1-80 equivalent%, based on the isocyanate group content of the polyisocyanate (A), of a compound (B) having an average of at 1.8-3.0 hydrogen atoms having Zerewitinoff activity, with an average molar mass of 450-5000 g/mol, and a proportion of 12-99 equivalent%, based on the isocyanate group content of the polyisocyanate (A), of a chain extender (C), into a self-cleaning twin-screw extruder whose diameter is 32-62 mm, which is operated at shear rates above 6000 sand residence times of 1-20 seconds, and then bringing the mixture from the self-cleaning twin-screw extruder into a second apparatus in order to complete the reaction.

Method for the continuous production of thermoplastically-processable polyurethane elastomers

The invention relates to thermoplastic polyurethane with a Shore hardness of 45A to 80A, a tensile strength, according to DIN 53504, higher than 5 Mpa, a tear strength, according to DIN 53515 higher than 30 N/mm and an abrasion according to DIN 53516 of less than 250 mm .

Thermoplastic polyurethane

Microcellular urea-containing polyurethane elastomer

Microcellular polyurethane elastomer containing urea groups

Thermoplastic polyurethanes are prepared by reacting (a) isocyanates with (b) compounds reactive toward isocyanates, in the presence or absence of (c) chain extenders, (d) catalysts and (e) customary auxiliaries and additives and adding crosslinked polyurethanes in comminuted form before, during and/or after the reaction.

Thermoplastic polyurethanes and their preparation

The present invention relates to a process for the preparation of thermoplastic polyurethane by reacting a) organic and/or modified organic polyisocyanates with b) at least one oligomeric polyhydroxy and/or polyamino compound having an average molecular weight of from 400 to 10,000 g/mol, in the presence or absence of c) chain extenders having at least two Zerewitinoff-active hydrogen atoms and an average molecular weight of less than 400 g/mol, d) catalysts, e) compounds which are less than difunctional with respect to isocyanates and/or isocyanates which are less than difunctional and, f) assistants and/or additives, in a twin-screw extruder in which both screws rotate in the same direction and which has a length of/diameter ratio of from 20 to 6 and discharging the resulting thermoplastic polyurethane from the extruder with shaping.

Preparation of thermoplastic polyurethanes

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Diepholz, Germany

Ruediger Krech