Methods of preparing polyolefin-based materials having improved adhesive/coating compatibility

Molded workpieces of any three-dimensional form, including polyolefin-based moldings, fibers and films, are used on a very wide scale in practice. An important problem area here is improving the surface properties of these structurally nonpolar hydrocarbon components. Thus, the poor adhesion of coatings and adhesives is a central problem which has remained unsolved for decades despite numerous attempts to find a solution. Methods of preparing polyolefin-based molded materials with improved adhesive/coating compatibility by incorporating aromatic carboxylic acid amides and transition metal compounds in the polyolefin-based material prior to molding are described. Methods of producing coated or bonded polyolefin-based, molded materials are also described.