Process for producing molded polyurethane parts

摘要

Process for producing molded polyurethane parts using as internal release agents, compounds of the general formula <IMAGE> I in amounts of 0.5 to 10 weight percent, based on the reaction formulation, in which at least one R2 radical in the average molecule represents <IMAGE> R3 is a divalent hydrocarbon radical with 2 to 4 carbon atoms and R4, R5 are univalent hydrocarbon radicals or together are part of a morpholine or a piperazine ring. The molded polyurethane parts can be removed from the mold using significantly lower tensional forces without residues being built up on the mold.