Process for the preparation of polydichlorophosphazen from a precursor composition on the basis of hexachlorocyclotriphosphazen.

摘要

The subject of the invention is a process for the preparation of polydichlorophosphazenes. This process consists in heating a precursor composition based on hexachlorocyclotriphosphazene with phosphorus oxychloride and in then removing, in a controlled way, the phosphorus oxychloride introduced.