WATER-BASED SILICON IMPREGNATING COMPOUND FOR WOOD Russian patent published in 2011 - IPC B27K3/34 

FIELD: chemistry.

SUBSTANCE: invention relates to protective compositions for wood and can be used in biological protection of building structures and articles made from wood. The compositions can also be used as an impregnating or finishing agent for concrete, foamed concrete, brick, asbestos board or gypsum. The impregnating compound contains polymethylphenyl siloxane or polyphenylsiloxane resin in form of a solution in an aromatic solvent, an acrylate copolymer, butyl alcohol, white spirit and water. The components are in the following ratio in vol. %: resin 30.0-45.0, butyl alcohol 6.0-15.0, acrylate copolymer 0.5-2.0, white spirit 10.0-20.0, water - the rest. The impregnating compound can also contain a biocidal additive which is compatible with organosilicon and acrylate polymers in amount of up to 0.1 vol. %.

EFFECT: obtained coatings do not hinder normal air exchange of structures, do not change the appearance of material; after treatment, building structures acquire hydrophobic and anti-fungus properties and become resistant to moss and lichen.

2 cl, 2 tbl, 9 ex