Preparation of highly resilient polyurethane foams

• Main Authors: Arlt, Andreas, Wagner, Klaus, Varenkamp, Volker
• Format: Patent
• Language: English
• Published: 09.12.2003

The present invention relates to a process for the preparation of highly resilient polyurethane foams. Highly resilient polyurethane foams are prepared by reactinga) polyisocyanates withb) compounds having at least two hydrogen atoms reactive with isocyanate groups,by a process in which a mixture containing, based in each case on the weight of the mixture,b1) from 5 to 75% by weight of at least one polymer polyol andb2) from 25 to 95% by weight of a mixture containing, based in each case on the weight of the mixture b2),b2i) from 70 to 98% by weight of at least one polyether alcohol having a molecular weight of from 3 500 to 6 500 g/mol, a functionality of less than or equal to 3 and an ethylene oxide content of from 8 to 20% by weight, based on the weight of the polyether alcohol, andb2ii) from 2 to 30% by weight of at least one polyether alcohol having a molecular weight of from greater than 4 000 to 7 000 g/mol, a functionality of from 4 to 8 and an ethylene oxide content of from 5 to 15% by weight, based on the weight of the polyether alcohol,is used as compounds b) having two hydrogen atoms reactive with isocyanate groups.