Hexachlorocyclohexane Cyclotriphosphazene Its Phenoxy Derivatives Synthesis And Characterization

Hexachlorocyclotriphosphazene and its relative derivatives containing phenoxy group were synthesized and the best reaction conditions were selected. The products were characterized by IR, NMR and DSC. The results show that in the acid-captor system the method to synthesize hexachlorocyclotriphosphazene was simple and the reaction time was also short, but this method generally was suitable for the lab scale because of the heat given out in this system; In the duplex catalyst/nitrogen system the method was complicated and the reaction time was long, but the process was comparatively steady, so it was suitable for the industry scale. Besides that ,the derivatives containing phenoxy group were synthesized successfully by potassium hydroxide/ toluene system, such as hexakis(phenoxy)cyclotriphosphazene hexakis(p-chlorophenoxy)cyclotriphosphazenehexakis(4-nitrophenoxy)cyclotriphos-phazene. This process was also improved by the potassium carbonate/ acetone system which was found to be very effective for the synthesis of hexakis(4-nitrophenoxy)cyclotriphosphazene.