internal autodesmoldeables for obtaining moldings comprise polyisocyanate polyaddition products mold release agents.

EXPOSED A process for producing molded parts AUTO-demoldable, COMPACT OR CELLULAR, MADE PRODUCTS polyisocyanate polyaddition, IF NECESSARY CONTAINING reinforcing agents by reacting (A) polyisocyanates ORGANIC AND / OR ORGANIC MODIFIED (B) least one compound having at least two reactive hydrogen atoms and a molecular weight of 62 to 10,000; And optionally (C) AGENTS chain extension and / or crosslinking in the presence of (D) AGENTS FOR INTERNAL MOLD RELEASE, AND presence or absence of (E) CATALYSTS; (F) Foaming Agents; (G) reinforcing agents, and (H) ADDITIVES IN A MOLDING TOOL, open or closed. The process is characterized because, as mold release AGENTS INTERIOR (D) are used esters and / or monoesters alkylsuccinic ACID AND / OR ESTERS AND / OR ACID alkenylsuccinic monoesters.