Halogenated hydroxy-aryloxy phosphazenes and epoxy oligomers based on them |
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Authors: | I V Terekhov S N Filatov E M Chistyakov R S Borisov V V Kireev |
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Institution: | 1. Mendeleyev University of Chemical Technology, Moscow, Russia 2. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, Moscow, Russia
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Abstract: | By partial substitution of the chlorine atoms in hexachlorocyclotriphosphazene for halophenols and subsequent reaction of the resulting halogenated phenoxy phosphazene and 2,2-di(4-hydroxyphenyl)propane monophenolate hydtoxy-aryloxy phosphazenes were synthesized with a molecular weight of 1100–1400 g mol?1. Epoxide oligomers (epoxy number of 6–8%), which are cured with the formation of non-combustible compositions PV-0 class of resistance to combustion according to State Standard (GOST 28157-89)], were obtained by reaction of these compounds with epichlorohydrin. Introduction of 5–50 wt% halogenated epoxyphophazene oligomers in industrial resin ED-20 can significantly improve the flame resistance of compositions based on these compounds. |
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