METHOD FOR OBTAINING FIRE-RETARDANT COMPOSITION Russian patent published in 2008 - IPC C09K21/10 

FIELD: chemistry.

SUBSTANCE: invention concerns obtaining antipyrenes and can be applied in woodworking industry for production of fireproof slab items, as well as in fire protection of metal constructions. Method of obtaining fire-retardant composition of bulging effect for wood and metal constructions involves mixing of metal phosphate and composition containing solidifier, ionogenic surfactant and HOTEX product, where solidifier is AM-1 amine modifier, amino alcohols or fire-retardant composition obtained by reaction of carbamide-containing compound with ammonium water during heating in weak alkali medium in the presence of amino alcohol, with further decondensation with carbide and neutralisation by orthophosphoric acid to pH 6.0-8.0ionogenic surfactant is PO-6 TS foaming agent of A and B grades, at the following component content, wt. %: metal phosphate 40-90, solidifier 5-30, ionogenic surfactant 0-15, HOTEX product 0-20.

EFFECT: enhanced fire protection and sustenance of moderate hardening speed of obtained antipyrene.

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