尿素与甲醛加成及缩聚产物<sup>13</sup>C  NMR研究

杜官本

doi:10.19455/j.mcgy.1999.04.003

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尿素与甲醛加成及缩聚产物¹³C NMR研究
13C NMR Study of Ureaformaldehyde Adducts and Resins
1. 西南林学院
1999年第4期
DOI： 10.19455/j.mcgy.1999.04.003

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[1]杜官本.尿素与甲醛加成及缩聚产物~(13)C NMR研究[J].木材工业,1999(04):9-13.

Du Guanben. 13C NMR Study of Ureaformaldehyde Adducts and Resins[J]. China Wood Industry, 1999,(4).
[1]杜官本.尿素与甲醛加成及缩聚产物~(13)C NMR研究[J].木材工业,1999(04):9-13. DOI： 10.19455/j.mcgy.1999.04.003.

Du Guanben. 13C NMR Study of Ureaformaldehyde Adducts and Resins[J]. China Wood Industry, 1999,(4). DOI： 10.19455/j.mcgy.1999.04.003.

摘要

合成并研究了几种尿素与甲醛的加成、缩聚产物结构，使用高分辨１３Ｃ核磁共振仪（ＤＲＸ－５００）确定了几种典型结构的化学位移并对化学位移的变化规律展开讨论；研究了一种脲醛树脂合成中间产物及最终液体树脂的结构，指定了各吸收峰的归属；结合模型化合物研究结果并参考文献，给出了脲醛树脂各结构单元的化学位移。

Abstract

A series of addition and condensation products of urea and formaldehyde was prepared as standard derivatives, and their structures were investigated with highresolution nuclear magnetic resonance(DRX500).Constitutional characterization by13C NMR spectra of condensation product was recorded. By comparison of 13C chemical shifts with above synthesized standard derivatives, assignment of all the signals appearing in resins was completed.