The spirit of the times brings new thinking: more and more companies are working to improve the reuse of plastics at the end of their lifecycle. However, all efforts always reach their limits when it comes to mixed plastic composites or multicomponent systems rather than pure materials. So far, these residual materials can only be thermally recycled, but not materially recycled.
This could change in the foreseeable future in view of a process that BASF is currently testing. In contrast to conventional methods, the material used in the process known as “ChemCycling” is not mechanically treated and processed into a solid granulate, but liquefied to a pyrolysis oil under the influence of thermal energy. In simple terms, higher molecularweight polymers are decomposed into low molecular-weight products that can be processed back into higher molecularweight polymers after appropriate separation.
Sounds like a good prerequisite for upcycling the plastic residues used. If established recycling processes and chemical recycling were combined, experts are convinced that the recycling rate for plastics could be more than tripled to 50 percent by 2030. ChemCycling would make a valuable contribution to the Circular Economy.