Basf Se Corporation

Basf Aktiengesellschaft

Christoph Bahr

Dirk Kempfert

Frank Schaefer

Guenter Scholz

Horst Papenfuss

Ernst Minder

Ruediger Krech

Sven Lawrenz

Yasuyuki Suzuki

Martin Vallo

Torben Kaminsky

Anja Oltmanns

Bin-Eric Chen

Harald Schulz

Marian Mours

Günter Scholz

Carsten Guenther

Tien Kuan Lim

Hartmut Giesker

Ulrich Stich

Cornelia Hinrichs

Teruya Ohkuwa

Frank SCHÄFER

Lim Tien Kuan

Suzuki Yasuyuki

Carsten Günther

The invention relates to a composition comprising a thermoplastic polyurethane, where the thermoplastic polyurethane has been prepared from a) a diisocyanate, b) a polyol comprising a polyol A and a polyol B and c) a chain extender, optionally with the aid of catalysts and optionally further comprising additives and/or auxiliaries, and a salt and/or an ionic liquid, preferably an ionic liquid, is comprised in the composition and the polyol A comprises ethoxy and propoxy groups and the polyol B comprises butoxy groups.

Conductive thermoplastic polyurethane

A pipe switch having a setting system, a housing and a closure element. The housing includes an inner wall in which a feed opening and at least two discharge openings are provided. The position of the closure element is rotatably changeable relative to the discharge openings. The setting system including a control and a drive controls the closure element such that a plurality of positions of the closure element relative to the discharge openings are realized accordingly. The closure element may be in the form of a slide or a two-part element having flaps. The setting system in cooperation with the closure system provides the plurality of positions of the closure element relative to the discharge openings, in each of which the sum of the cross-sectional areas of a first and of a second discharge opening not covered by the closure element is substantially constant.

Pipe switch with metering function

The invention refers to a thermoplastic polyurethane produced from at least an organic diisocyanate and a compound which is reactive toward isocyanates, wherein the polyurethane comprises the ester of a tricarboxylic acid with at least one alcohol and wherein all acid groups of the tricarboxylic acid are esterified with an alcohol. The invention further refers to a process for producing the respective polyurethane, products comprising this thermoplastic polyurethane and the use of the ester of a tricarboxylic acid as plasticizer in thermoplastic polyurethanes.

Soft thermoplastic polyurethane based on the ester of a tricarboxylic acid

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

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Lembruch, Germany

Christoph Bahr