| abstract |
The present invention relates to a process for the preparation of polyurethanes by mixing a) polyisocyanates, b) mixtures obtained by introducing alkali metal or alkaline earth metal salts into compounds containing carbamate groups, c) comprising one or Compounds of multiple epoxy groups, and optionally d) polyols, e) chain extenders, and f) fillers and other additives to form a reaction mixture and sufficiently react the mixture to obtain a polyurethane, wherein in The amount of alkali metal ions or alkaline earth metal ions per equivalent of carbamate groups in component b) is from 0.0001 to 3.5. The invention also relates to the polyurethane obtained by this method and to the use of this polyurethane for the production of vehicle body parts. |