Summary
We have synthesized 4-(1-naphthyl)-1,2,4-triazolidine-3,5-dione (4-NTD) in high yield and purity from 1-naphthyl isocyanate and used it as a new monomer for polymer synthesis. A series of novel naphthalene-containing polyureas have been successfully prepared from 4-NTD with hexamethylene diisocyanate (HMDI), isophorone diisocyanate (IPDI) and toluene-2,4-diisocyanate (TDI) in N,N-dimethylacetamide (DMAc) or N-methylpyrrolidone (NMP) solution in the presence of pyridine, triethylamine or dibutyltin dilurate as catalysts. Some physical properties and structural characterization of these novel polyureas are reported. Fluorimetric studies of the new monomer, model compound as well as polymers were also investigated.
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Mallakpour, S., Zandi, H. Step-Growth Polymerization of 4-(1-Naphthyl)-1,2,4-triazolidine-3,5-dione with Diisocyanates. Polym. Bull. 57, 611–621 (2006). https://doi.org/10.1007/s00289-006-0604-5
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DOI: https://doi.org/10.1007/s00289-006-0604-5