Polyetherols from melamine cyanurate and ethylene carbobate - synthesis and application
The results of the study on the reactions of melamine cyanurate with ethylene carbonate were presented. As a result of the reactions, polyetherols containing thermostabile 1,3,5-triazine and perhyroxo-1,3,5-triazine rings in their structure were obtained. Basic physical properties such as density, viscosity, hydroxyl number, weight changes were measured. The polyetherols were applied as a polyol component to receiving of thermoresistant polyurethane foams. Some of the properties of the obtained foams were investigated. The value of the apparent density is between 51 and 71 kg/m3, compressive strength 222-356 kPa and the content of the open pores between 14-33%. Thermal resistance was also studied by means of the TGA method. It was found that oxygen index of the selected compositions is between 20-22%.
Casu, A., Camino, G., De Giorgi, M., Flath, D., Morone, V., Zenoni, R., Fire-retardant mechanistic aspects of melamine cyanurate in polyamide copolymer. Polym. Degrad. Stab., 58 (1997), 297-302, DOI:10.1016/S0141-3910(97)00061-X.
Roland, W., Reinhard, B., Andreas, D. (2007). EP No. 1731559. European Patent Office.
Morival, G., Hervy, C. (1988). US Patent No. 4786673. Washington, D.C.: U.S. Patent and Trademark Office.
Kasowski, R., Martens, M. (2000). US Patent No. 3,025,419. Washington, D.C.: U.S. Patent and Trademark Office.
Modesti, M., Lorenzetti, A., Simioni, F. and Checchin, M. (2001). Influence of different flame retardants on fire behaviour of modified PIR/PUR polymers. Polym. Degrad. Stab. 74(3), 475-479, DOI:10.1016/S0141-3910(01)00171-9.
Zatorski, W., Brzozowski, Z. (2003). Pol. Patent No. 198605. Warsaw, Patent Office of The Republic of Poland.
Mazo, G.Y., Ross, R.J., Kneller, J.F., Mazo, J. (1999). U.S. Patent No. 5,939,517. Washington, D.C.: U.S. Patent and Trademark Office.
Klimiec, J., Fabisz, E., Researches on synthesis of propylene carbonate. Chem. Ind. 79 (10) 339-340 2000.