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The invention provides a chemical recycling process for polyurethane foams using a dual-action reagent that enables an efficient degradation of the urethane groups in the polyurethane foam structure. The crude polyols obtained using our method can be used directly or purified further, depending on the quality requirements of the end product. If purification is required, it can be performed in a closed loop system, minimizing both the economic and environmental impact. The recycled polyols can be used as feedstock for the production of new flexible polyurethane foams or other polymer products.
• The process is carried out in bulk using a cheap reagent without any catalysts, solvents or other media. • The degradation of the urethane groups in the PUF structure is efficient. • The formation of toxic aromatic diamine as a by-product is low. • Isolation and purification of recycled polyols is simple and efficient. • The end-group functionality of the recycled polyols is preserved.
The technology is currently developed up to TRL3. Scale-up is required before establishing a manufacturing line.
The National Institute of Chemistry is willing to partner up with a potential customer, namely for technology scale-up or any trainings that might be necessary in order to establish a production line.
In order to protect the intellectual property associated with the technology, the National Institute of Chemistry has filed a patent application with the European Patent Organization, where the technology will be tested to confirm the chemical recycling process is scientifically sound.