FIELD: chemistry.
SUBSTANCE: invention relates to a method of producing wood antiseptic "BOROKSAN" by reacting boric acid with a distillate formed from fractionation of high-boiling products of synthesis of 4,4-dimethylsiloxane-1,3 of the following composition, wt %: 4-methyl-4-oxytetrahydropyran - 6.7-11.0, 3-methyl-1,3-butanediol - 8.5-13.5, 4-oxyisopropyl-1,3-dioxane - 6.0-16.0, 4-methyl-4-oxyethyl-1,3-dioxane - 10.0-30.0, 4,4-dimethyl-5-oxymethyl-1,3-dioxane - 4.5-8.5, ethers and formals of said alcohols - the balance, at high temperature with continuous distillation of reaction water, with the ratio of boric acid to distillate of (0.30-0.35):1.0, wherein the process is carried out at temperature of 90-95°C and residual pressure of 20-80 mmHg.
EFFECT: obtained antiseptic is not toxic, has high anti-termite action and hydrophobic effect.
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