Plastic wastes are so far underexplored as feedstocks for producing 'upcycled' materials. This project, focusing on the large available mass of end-of-life polyolefins, aims at selective oxidation of these hydrocarbon-type materials. As a first option, alcohol (and ketone) groups are created along the polyolefin chain. For this, selective Ti-containing zeolites and clean oxidants (e.g. hydrogen peroxide) are applied at mild temperatures, avoiding the adverse aspects of free radical autoxidations