This work focuses on the implementation of propargyl methacrylate into the high pressure copolymerization of ethene in a lab-scale miniplant system. Hereby, the influence of the comonomer onto the copolymer composition as well as the molecular weight distribution is determined. Additionally, the experimentally determined kinetic data of the copolymerization of propargyl methacrylate and ethene is implemented into an existing simulation model in order to obtain a simulation model for this reaction system. Furthermore, the synthesized copolymers are used as reactants in click chemistry. Hereby, a model substance is clicked onto the copolymer, resulting in a modified product. Feasibility of the copolymer modification via click chemistry within different media is shown and the reaction rate coefficient of the click reaction is determined as part of the investigation.