The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 22, 2015
Filed:
Nov. 03, 2010
Stefan Lindner, Köln, DE;
Wolfgang Friederichs, Köln, DE;
Reinhard Strey, Dormagen, DE;
Thomas Sottmann, Köln, DE;
Elena Khazova, Mannheim, DE;
Lorenz Kramer, Köln, DE;
Verena Dahl, Köln, DE;
Agnes Chalbi, Hürth, DE;
Stefan Lindner, Köln, DE;
Wolfgang Friederichs, Köln, DE;
Reinhard Strey, Dormagen, DE;
Thomas Sottmann, Köln, DE;
Elena Khazova, Mannheim, DE;
Lorenz Kramer, Köln, DE;
Verena Dahl, Köln, DE;
Agnes Chalbi, Hürth, DE;
Bayer MaterialScience AG, Leverkusen, DE;
Abstract
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.