Composite material comprising polyurethane and at least one thermoplastic plastics material, a process for the production thereof and the use thereof in motor vehicles

A process for the production of a composite material comprising at least two layers of different plastics materials which are directly bonded to each other, comprising:

• (1) applying (A) a polyurethane-forming reaction system comprising (a) an organic polyisocyanate component and (b) an isocyanate-reactive component, onto (B) a prefabricated thermoplastic polymer, wherein at least one of componenets (a) and (b) of the polyurethane-forming reaction system additionally comprises a particulate material which is coated with a thermoplastic plastics material which is different from the formed polyurethane, and the particulate material has a particle size of ≦50 nm;
• and
• (2) allowing the polyurethane-forming reaction system to fully react to form a polyurethane layer, wherein said particulate material is homogeneously distributed in the polyurethane layer;
• thereby forming a composite material comprising at least two layers, wherein the total surface area of the particulate material corresponds to at least the extent of the total interface between the two layers.