| abstract |
The present invention relates to a method for producing plastically deformable polyurethane polyamide rigid foams having a closed cell proportion of less than 70%, in which (a) organic polyisocyanate is mixed with (b) one or a plurality of polymer compounds having at least two hydrogen atoms that are reactive to isocyanates, (c) optionally chain-extending and/or crosslinking agents, (d) one or a plurality of carboxylic acids having a functionality of at least 2, (e) a catalyser containing one Lewis base component, and (f) optionally auxiliary agents and additives, so as to form a reaction mixture, which reaction mixture is allowed to fully react. The present invention further relates to a plastically deformable polyurethane-polyamide rigid foam that is obtained using such a method, and to the use of such a plastically deformable polyurethane-polyamide rigid foam for interior lining or engine compartment lining in motor vehicles. |