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Chemical Recycling of Mixed Polyurethane Foam Stream Recovered from Shredder Residue into Polyurethane Polyols
Technical Paper
2005-01-0850
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Tons of shredder residue (SR), a complex mixture of plastics, foams, rubber, metals, and glass, are generated each year as a by-product from the recycling of obsolete vehicles. The Vehicle Recycling Partnership (VRP), along with our CRADA partners, is investigating ways to enable the optimum recovery and recycling of these materials. This study investigates the feasibility of recycling (PU) foam using a new chemical process by glycolysing [1, 2] two types of polyurethane (PU) foams, “dirty” and “clean”, which were recovered from SR via an industrial scale process specifically designed to separate PU foams from SR [3, 4]. In stage one of this process, the polyurethane foam is subjected to glycolysis, followed by filtration of the liquid glycolyzed product. In stage two, the glycolyzed products are used as initiators in reaction with propylene oxide to prepare novel polyurethane polyols. A number of successful laboratory glycolyses were carried out utilizing the two different types of PU foams recovered from shredder residue: (1) the best case scenario - hand-picked PU foams from shredder residue with >80% conversion into liquid initiator and (2) the worst case scenario - mixed PU materials separated by an automated separation process from shredder residue with ∼50% conversion into a liquid initiator. Both toluene diisocyanate (TDI) and polymeric diphenylmethane diisocyanate (PMDI) based flexible foams were prepared from the novel recycled polyols by propoxylation of the glycolyzed products (initiators) obtained from the mixed PU materials [1, 2].
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Authors
- Vahid Sendijarevic - Troy Polymers, Inc.
- Ibrahim Sendijarevic - Troy Polymers, Inc.
- Gerald R. Winslow - KBS Consulting - Vehicle Recycling Partnership
- Claudia M. Duranceau - Ford Motor Company - Vehicle Recycling Partnership
- Nakia L. Simon - DaimlerChrysler - Vehicle Recycling Partnership
- Candace S. Wheeler - General Motors Corp.- Vehicle Recycling Partnership
Citation
Sendijarevic, V., Sendijarevic, I., Winslow, G., Duranceau, C. et al., "Chemical Recycling of Mixed Polyurethane Foam Stream Recovered from Shredder Residue into Polyurethane Polyols," SAE Technical Paper 2005-01-0850, 2005, https://doi.org/10.4271/2005-01-0850.Also In
References
- Sendijarevic, V. “Process for chemical recycling of polyurethane-containing scrap,” June 15 2004
- Sendijarevic, V. “Chemical Recycling of Mixed Polyurethane Foam Stream Recovered from Shredder Residue into Polyurethane Polyols,” Proceedings of the API Polyurethane Conference 2004 Las Vegas, Nevada October 18-20 2004
- Jody, B. et al. “Efficient continuous dryer for flexible polyurethane foam and cleaning apparatus,” March 16 1999
- Jody, B. et al. “Process to recycle shredder residue,” Dec. 11 2001
- Sendijarevic, v. Simon, N.L. Duranceau, C.M. Winslow, G.R. Williams, R.L. Wheeler, C.S. Niemic, S.F. Schomer, D.R. “Screening Study to Evaluate Shredder Residue Materials,” SAE 2004 World Congress Detroit, Michigan March 8-11 2004 Paper No. 2004-01-0468
- Environmental U.S. Protection Agency “PCB, Lead, and Cadmium Levels in Shredder Waste Materials: A Pilot Study,” Final Report U.S. Environmental Protection Agency Washington, DC April 1991
- Sendijarevic V. Sendijarevic A. Ulah H. Ghazi S. Pokorski B. Klempner D. Frisch K.C. “Recycling of Automotive Shredder Residue,” Proceedings of the Third Automotive & Transportation Interiors Conference May 7-9 1996 Detroit 70 80
- Recycling Today http://www.recyclingtoday.com/news/asp?ID =3945&Source= news& AdID=32 April 17 2003
- Mark, F.E. End-of-life Vehicles Recovery and Recycling Polyurethane Seat Cushion Recycling Options Analysis Polyurethane Car Components,” SAE 2004 World Congress Detroit, Michigan March 8-11 2004 Paper No. 2004-01-0246
- Winslow G.R. Appel, B.S. Simon N.L. Duranceau C.M. Wheeler C.S. Sendijarevic “Recycling Shredder Residue Containing Plastic and Foams Using a Thermal Depolymerization Process,” Proceedings of the API Polyurethane Conference 2004 Las Vegas, Nevada October 18-20 2004
- Modesti M. ‘Recycling of Polyurethane Polymers,” “Advances in Urethane Science and Technology,” 1996 13 Frisch K.C. Klempner D. Technomic Publishing Co. Inc. Lancaster, PA, USA 237 288