PROCESS FOR PRODUCING RIGID POLYURETHANE FOAMS

摘要

19AbstractProcess for producing rigid polyurethane foams5 The Invention relates to a process for producing polyurethanes by reactingpolyisocyanates withcompounds having at least two hydrogen atoms which are reactive toward 10 isocyanate groups,wherein the compounds b) having at least two hydrogen atoms which are reactive toward isocyanate groups comprise at least one polyether alcohol b1) which has been prepared by reaction of an aromatic amine bla) with propylene oxide using an amine15 bib) which is different from b1a) as catalyst.No suitable figure