Bayer Materialscience Ag

Bayer Intellectual Property Gmbh

Covestro Deutschland Ag

Lorenz Kramer

Stefan Lindner

Verena Dahl

Reinhard Strey

Wolfgang Friederichs

Thomas Sottmann

Agnes Dominika Chalbi

Elena Khazova

The present invention relates to a process for producing a polyurethane foam, where the blowing agent used is present in the supercritical or near-critical state. A reaction mixture is introduced into a closed mould, where the closed mould has been set up in such a way that its interior volume and/or the pressure prevailing in its interior can be altered after the introduction of the mixture by external influence. Through the selection of the surfactant it is possible to obtain microemulsions of the blowing agent in the polyol phase. The invention further relates to a nanocellular polyurethane foam obtainable by the process of the invention.

Process for producing a polyurethane foam by means of supercritical or near-critical blowing agent

Process for producing a polyurethane foam and polyurethane foam obtainable therefrom A process for producing a polyurethane foam with bimodal cell size distribution, comprising the following steps:

Process for producing a polyurethane foam and polyurethane foam obtainable therefrom

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Kö'ln, Germany

Lorenz Kramer