FIELD: chemistry.
SUBSTANCE: invention relates to compound-action protective compositions for woods and can be used to protect wooden structures from biocorrosion and fire. The fire-retarding bio-composition contains boric acid, water and monoethanol amine, wit the following ratio of components in wt %: boric acid 5-25, monoethanol amine 5-25, water - the rest.
EFFECT: use of the disclosed composition increases adhesion of wood surface to paint materials and doubles water absoption.
2 tbl, 3 ex
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