Abstract
A procedure for the synthesis of hexa-p-hydroxymethylphenoxycyclotriphosphazene is optimized. The thermal characteristics of this compound are studied, and its capability for thermal self-con-densation is demonstrated. The main steps of polycondensation of hexa-p-hydroxymethylphenoxycyclotriphosphazene involve the formation of methylene ether bonds accompanied by the evolution of water and their further scission without formation of formaldehyde. The resulting polymer is thermally stable up to 470°C.
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