FIELD: chemistry.
SUBSTANCE: present invention relates to a fire-resistant composition for impregnating wood and a method of impregnating wood. An aqueous fire-resistant composition contains phosphoric acid, ammonia, diammonium phosphate, ammonium sulphate, urea and a complexing agent. Wood is impregnated with said composition in order to protect the wood from fire, decomposition or decay.
EFFECT: preventing penetration of fire into wood, preventing the wood from splitting, decaying, formation of blue spots, providing a less toxic composition, which prevents the use of protective equipment and change of colour of the impregnated wood.
21 cl, 9 dwg, 9 tbl, 5 ex
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