The synthesis novel technology of chlorocyclophosphazene

Sun De; Li Ran; Zhang Long

doi:10.1117/12.667827

24 January 2006 The synthesis novel technology of chlorocyclophosphazene

Sun De, Li Ran, Zhang Long

Proceedings Volume 6029, ICO20: Materials and Nanostructures; 60291R (2006) https://doi.org/10.1117/12.667827
Event: ICO20:Optical Devices and Instruments, 2005, Changchun, China

Abstract

The present paper provides a novel process for preparing chlorocyclophosphazene characterized by the combination of: (I) The first step of reacting phosphorus pentachloride sublimated with ammonium chloride in an inert organic solvent (such as chlorobenzene) in the presence of N₂ and Zncl₂, and distilling off the solvent from the resulting reaction mixture to obtain a reaction product consisting essentially of chlorocyclophosphazene (up to 93%), and (II) the second step of contacting a solution of the reaction product in the heptane with water in proption at temperature of about 60°C, separating the resulting aqueous layer from the organic layer, and isolating from the organic layer a mixture of chlorocyclophosphazene consisting essentially of the hexachlorocyclotriphosphazene which yield can reach up to 80%. Factors affecting on the process were also discussed in detail. The results show that the technology is time saving(only 2.5 hours) under the suitable condition and the total fractional conversion is achieved 99%.The hexachlorocyclotriphosphazene were characterized by IR spectra, and the purity of product is over 98%.

Citation Download Citation

Sun De, Li Ran, and Zhang Long "The synthesis novel technology of chlorocyclophosphazene", Proc. SPIE 6029, ICO20: Materials and Nanostructures, 60291R (24 January 2006); https://doi.org/10.1117/12.667827

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