Injection-moulded article and process for the production thereof

A process for preparing an injection molded article which is a metal/plastic composite bonded with a tack-free polyurethane adhesion promoter layer, said process consisting essentially of first applying polyurethane adhesion promoter to metal thereby forming a layer having a thickness of 2 to 80 .mu., secondly, drying the promoter layer wherein the promoter layer is formed from (1) a polyurethane solution based on polybutylene adipate or polybutylene hexylene adipate having a molecular weight of 1000 to 8000 and hexamethylene diisocyanate or (2) a polyurethane dispersion based on a polyalkylene adipate or polyalkylene phthalate having a molecular weight of 1000 to 8000 and tolylene diisocyanate or hexamethylene diisocyanate, then thirdly encapsulating the promoter-layered metal by injection molding with a thermoplastic composition based on cellulose ester, polyvinyl chloride, polyamide, polycarbonate, polysulphone, ABS, polymethyl methacrylate, polyphenylene sulphide, polyalkylene terephthalate, polyarylene terephthalate, polyphenylene oxide, polyphosphonate or polyether ester ketone.