Basf Aktiengesellschaft

Karl-Heinz Steinchen

Bernd Guettes

Stefan Dinsch

Heinz-Dieter Lutter

Harald Larbig

Klaus Wagner

Regina Pretzsch

Juergen Winkler

Gerd Hoeppner

In a process for producing flexible polyurethane foams by reacting

Production of flexible polyurethane foams

In a process for preparing polyether polyols containing aromatics by molecular addition of alkylene oxides to H-functional initiators at from 70.degree. C. to 135.degree. C. and pressures of from 0.1 MPa to 1.0 MPa, the alkoxylation is carried out using at least one initiator comprising at least 95% by weight of 2,3 and 3,4 isomers of tolylenediamine, from 0.5 to 4% by weight of 2,4 and 2,6 isomers of tolylenediamine and from 0.1 to 1.5% by weight of more volatile fractions from tolylenediamine production. The polyether polyols prepared by this process can be used as component of a polyol mixture for producing rigid polyurethane foams.

Preparation of polyether polyols containing aromatics

Growing community of inventors

Schwarzheide, Germany

Karl-Heinz Steinchen