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Versatile polyurethane foams: paving the way for more sustainable materials in cars
Polyurethane (PU) foam is an indispensable material in car seats, instrument panels, load floors, headliners and acoustic applications. We are making PU more sustainable by attributing alternative feedstock to our products today, while working towards full recyclability of PU foam from end-of-life vehicles (ELVs) tomorrow.
Story · November 20, 2023
Reducing carbon footprint, expanding recycled content: facing the sustainability challenge in steps
Transforming the automotive sector into a fully circular economy while reducing greenhouse gas emissions and environmental impact is a massive challenge. Taking incremental steps is the most realistic way to achieve this vision. Today, it’s already possible to cut the automotive industry carbon footprint by attributing alternative feedstocks like biomass and bio-waste residues to our products. Covestro already offers a range of certified up to carbon-neutral raw materials for PU foam as drop-in solutions today. Down the road, the challenge is to grow the share of recycled materials in new cars – and ensure the recyclability of the PU going into them. For example to make cars more sustainable, in the future raw materials could be derived from post-consumer packaging waste, and all of the PU foam in car seats and other PU-based components could be recycled at the end of a vehicle’s life cycle.
Alternative attributed feedstocks enable more sustainable PU foams today
Covestro is a pioneer in replacing fossil feedstocks with alternative feedstocks. Using biomass and bio-circular attributed feedstocks in automotive PU seat foam and other PU interior components immediately reduces the carbon footprint of PU foams for OEMs and their suppliers. When introducing more sustainable materials into the chemical process that results in PU foam, these bio-attributed feedstocks must be tracked systematically. ISCC+ (International Sustainability and Carbon Certification) mass balance is the methodology for tracing these feedstocks through the chemical processes and across multiple partners in the supply chain. ISCC+ mass balance certification also means that the more sustainable feedstocks can be allocated to specific products by ensuring that uniform standards are applied along the value chain. This in turn enables OEMs to put the ISCC+ label on specific PU foam components, and take the certified reduction in CO2 emissions along with the sustainable share. In the near future, feedstocks based on end-of-life plastic waste will be able to be attributed to PU-based products.
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Our vision for the future: full PU recycling for end-of-life vehicles
Covestro aims to achieve full recyclability of polyurethane foam in the automotive sector and beyond. We are making substantial investment in diverse recycling technologies, including chemolysis and smart pyrolysis to enable the recovery of high-value polyurethan molecules that can support end-of-life vehicles recycling and be re-used in a closed loop system. We’ve achieved positive results with several technologies successfully scaled up to pilot stage. We anticipate a future where polyurethane foam from end-of-life vehicles (ELVs) can be recycled and reused at industrial scale. One real-world application is already on the road: the solar-powered Sonnenwagen features a driver's seat made from recycled polyurethane foam recovered from end-of-life car seats – proving that circular materials deliver both comfort and performance, even under extreme conditions. Driven by the recycling demands of the automotive industry, we aim to incorporate end-of-life plastic waste feedstocks that cover the full product portfolio with open-loop solutions in the coming years, and closed-loop PU foam solutions for ELV recycling within the next decade. When it comes to achieving greater sustainability for PU foams in the automotive industry, Covestro is on it!

More sustainable PU foams for cars
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