Basf Aktiengesellschaft

Basf Elastogran Gmbh

Gerhard Lehr

Peter Horn

Ludwig Jung

Frank Prissok

Harald Larbig

Rolf Lebkucher

Manfred Genz

Sarbananda Chakrabarti

Ruediger Krech

Gerhard Zeitler

Friedhelm Lehrich

Dieter Hertel

Horst King

Aleksander Glinka

Douglas J Harrop

The invention relates to a process for the production of polyurethane foams by reacting

Production of low-fogging polyurethane foams, and specific

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

Rigid polyurethane foams, preferably semirigid polyurethane foams, are produced by reacting an organic and/or modified organic polyisocyanates with relatively high molecular weight polyhydroxyl compounds and, optionally, low molecular weight chain extenders and/or crosslinkers in the presence of water or mixtures of water and physically acting blowing agents, optionally, catalysts, at least one additive selected from the group consisting of sulfonate salts of an acid group-containing alkylene oxide polymer, a phosphonate salt of an acid group-containing alkylene oxide polymer, and mixtures thereof, additional other additives and optionally, auxiliaries. The polyurethane foams produced by this process can be used to produce composite comprising at least one covering layer and at least one layer comprising a rigid or semirigid polyurethane foam produced by the process of the present invention.

Production of rigid or semirigid polyurethane foams and composite

The invention provides UV-stabilizer concentrates, which, relative to the total weight, consist of

UV-stabilizer concentrates based on TPU, a process for their production

The present invention deals with flexible elastic polyurethane films, efficaciously having a thickness from 0.3 to 3 mm, prepared by sintering powdered thermoplastic polyurethanes, having:

Flexible elastic polyurethane films a process for their preparation and

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Schwegenheim, Germany

Gerhard Lehr