A key achievement of Carbon4PUR is the identification of novel catalysts that enable the production of new polyols. With the help of these catalysts, the research partners succeeded in producing polyols using carbon monoxide (CO) from gas mixtures at a laboratory scale. In the new intermediate, 27 percent CO could be bound.
Insights gained from Carbon4PUR could also have implications for the CO₂ technology developed by Covestro. The sustainable polyol cardyon® developed on this basis contains up to 20 percent carbon dioxide instead of crude oil and is used, for example, in the production of flexible polyurethane foam in mattresses, binders for sports flooring or elastic fibers. Carbon4PUR was able to extend this CO₂ technology to the use of CO₂-containing gas mixtures such as blast furnace gas from steel production.
Findings as groundwork for future research & development
As part of the research project, Carbon4PUR technology was successfully upscaled to a semi-industrial scale. First examples of applications have already been demonstrated by the Insulation business line of the Recticel Group (Belgium) and the chemical manufacturer Megara Resins (Greece), who have further advanced their product development on the basis of the research results. “We demonstrated that polyols based on the new Carbon4PUR technology can be successfully incorporated into rigid foams to make insulation boards with technical specifications comparable to the market reference,” said Dr. Geert Snellings, Innovation Manager at Recticel. Megara Resins has succeeded in incorporating the new polyols into waterborne polyurethane dispersions for wood coatings.
In addition, as part of Carbon4PUR, RWTH Aachen University has investigated the acceptance of carbon capture and utilization (CCU) using the example of insulation boards in a scientific study. The term stands for the capture of carbon dioxide and its use for further chemical processes. “We found that the public still knows far too little about CCU technology. However, when end users receive adequate information, a generally positive attitude emerges,” explains Prof. Dr. Martina Ziefle, Chair of Communications Science at RWTH Aachen University. “Nevertheless, there is still a remaining need to increase awareness of CCU to strengthen the technology’s and product’s acceptance.”
Research alliance can create jobs