Quantitative and qualitative<sup>1</sup>H, <sup>13</sup>C, and<sup>15</sup>N NMR spectroscopic investigation of the urea-formaldehyde resin synthesis
作者:Oliver Steinhof、Éléonore J. Kibrik、Günter Scherr、Hans Hasse
DOI:10.1002/mrc.4044
日期:2014.4
work contributes to its elucidation by presenting results from detailed NMR spectroscopic studies with different methods. Besides1H NMRand13C NMR,15N NMR spectroscopy is also applied.15N‐enriched urea was used for the investigations. A detailed NMR signal assignment and a model of the reaction network of the hydroxymethylation step of the synthesis are presented. Because of its higher spectral dispersion