Impact-resistant thermoplastic molding materials

A thermoplastic molding material containing

• A) from 15 to 99% by weight of a polyoxymethylene homo- or copolymer and
• B) from 1 to 60% by weight of a thermoplastic polyurethane having a melting point of <200.degree. C. and
• C) from 0 to 50% by weight of a fibrous or particulate filler or a mixture thereof and
• D) from 0 to 30% by weight of additives and processing assistants selected from the group consisting of formaldehyde scavengers, plasticizers, lubricants, antioxidants, adhesion promoters, light stabilizers and pigments, the percentage by weight of the components A) to D) summing to 100%,
• wherein the thermoplastic polyurethane B) is obtained by reacting
• a) organic diisocyanates,
• b) polyhydroxy compounds having number average (M.sub.n) molecular weights of from 500 to 8000 and
• chain extenders having number average (M.sub.n) molecular weights of from 60 to 400, in the presence of
• d) catalysts and
• e) assistants and/or additives
• at an initial temperature of .gtoreq.100.degree. C. and a pouring temperature of from 140.degree. to 200.degree. C. and with subsequent thermal maturing at a temperature of from 60.degree. to 120.degree. C.