Mono-fraction plastics can be a result of industrial processes, collected post consumer waste or heterogeneous plastic waste followed by a seperation system, such as the German green dot. Adding 5 % - 20 % Lucofin® 1400HN / Lucofin® 1400MN to mono-fraction plastics based on PP, PE or PA –here a proportion of Lucofin® 1492M is needed- significantly improves impact strength, elongation at break and puncture impact of the corresponding blends.