scholarly journals Synthesis and Structure of Urea-Formaldehyde Oligomers with Peroxide Groups

2021 ◽  
Vol 15 (3) ◽  
pp. 369-376
Author(s):  
Olena Astakhova ◽  
◽  
Olena Shyshchak ◽  
Michael Bratychak ◽  
◽  
...  

The possibility of synthesis in the presence of tert-butyl peroxymethanol (TBPM) or tert-butyl hydroperoxide (TBHP) of urea-formaldehyde oligomers with peroxide groups (UFOP) has been considered. Zinc oxide was used as the reaction catalyst. The effect of the initial components ratio, the reaction temperature and the process time on the characteristics and yield of the obtained oligomers was studied. Methods for obtaining UFOP using a mixture of TBPM and TBHP as a component are proposed. The structure of the synthesized UFOP was confirmed by IR- and NMR-spectroscopic studies.

2021 ◽  
Vol 15 (4) ◽  
pp. 512-519
Author(s):  
Olena Astakhova ◽  
◽  
Olena Shyshchak ◽  
Michael Bratychak ◽  
◽  
...  

Melamine formaldehyde oligomers with peroxy groups (MFOP) have been synthesized based on melamine or urea and melamine in the presence of tert-butyl peroxymethanol or tert-butyl hydroperoxide. Zinc oxide was used as a catalyst. The effect of peroxide nature, ratio of the starting components and process time on the characteristics and yield of MFOP has been studied. The structure of the synthesized MFOP was confirmed by IR- and PMR-spectroscopy. The chemistry of the cross-linked structures formation was studied. The possibility of using such oligomers as a cross-linking agent for the mixtures based on TGM-3 oligoesteracrylate is shown.


2012 ◽  
Vol 14 (13) ◽  
pp. 3384-3387 ◽  
Author(s):  
Erbo Shi ◽  
Ying Shao ◽  
Shulin Chen ◽  
Huayou Hu ◽  
Zhaojun Liu ◽  
...  

2021 ◽  
Vol 154 (16) ◽  
pp. 164306
Author(s):  
Anne S. Hansen ◽  
Rachel M. Huchmala ◽  
Emil Vogt ◽  
Mark A. Boyer ◽  
Trisha Bhagde ◽  
...  

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