ABSTRACT

Interaction of 1,3-dimethylimidazolium dimethylphosphate and elemental sulfur synthesized a new initiator of polymerization of formaldehyde, opening the possibility of its implementation in accordance with the principles of Green chemistry. The possibility of fast oligomerization of formaldehyde in an aqueous medium with the formation of insoluble products, the structure of which is determined by FTIR, MALDI-TOF, ¹H NMR, ¹³C NMR, HSQC and HMBC spectroscopy, is shown. It was found that (phosphonooxy-)oligosulfanide anion initiates formaldehyde oligomerization by anionic mechanism with chain termination due to interaction with water. It was shown that the synthesized formaldehyde oligomers retain resistance to degradation up to a temperature of 443 K, and then slowly thermally decompose to a temperature of 513 K, above which the rate of thermal degradation increases significantly.

摘要

1,3-二甲基咪唑鎓二甲基磷酸酯与元素硫的相互作用合成了一种新的甲醛聚合引发剂，开启了其按照绿色化学原理实施的可能性。甲醛在水性介质中快速低聚形成不溶产物的可能性，其结构由 FTIR、MALDI-TOF、¹ H NMR、¹³显示了 C NMR、HSQC 和 HMBC 光谱。发现(膦酰氧基-)低聚硫阴离子通过阴离子机制引发甲醛低聚反应，由于与水的相互作用而链终止。结果表明，合成的甲醛低聚物在高达 443 K 的温度下仍保持抗降解性，然后缓慢热分解至 513 K 的温度，高于该温度时，热降解速率显着增加。