Journal
POLYMER
Volume 41, Issue 19, Pages 7017-7022Publisher
ELSEVIER SCI LTD
DOI: 10.1016/S0032-3861(00)00054-9
Keywords
polyurethanes; chemical recycling; triethyl phosphate
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It was established that flexible polyurethane foams based on polyester or polyether polyol and toluene diisocyanate can be converted quantitatively into liquid form by treatment with triethyl phosphate (C2H5O)(3)P(O) Structures of the degraded products were studied by H-1, C-13 and P-31 NMR spectroscopy. The degraded products are phosphorus containing oligourethanes. The likely mechanism is presented. (C) 2000 Elsevier Science Ltd. All rights reserved.
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