FIELD: chemistry.
SUBSTANCE: invention relates to used as flame retardants oxyalkylated esters of tris-ethylene glycol-tetra-methoxymethyl (I) and pentaerythrite-tetra-methoxymethyl (II) phosphonic acids with formulae
Disclosed method consists in interaction of methoxymethylphosphonic acid with polyatomic alcohols (pentaerythrite or ethylene glycol) to form substituted tris-ethylene glycol-tetra-methoxymethyl- and pentaerythrite-tetra-methoxymethylphosphonic acids, which then undergo the process of oxyalkylation with use of oxyethylated with formation of oxyethylated esters of tris-ethylene glycol-tetra-methoxymethyl- and pentaerythrite-tetra-methoxymethylphosphonic acids.
EFFECT: disclosed are new ecologically safe flame retardants and efficient method for production thereof.
5 cl, 3 ex, 2 tbl
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