FIELD: preparation of cutting fluid emulsions used for machining of metals by cutting. SUBSTANCE: concentrate comprises, wt %: mineral oil, 100-45; monoethanol amine, 8-15; boric acid, 6-15; fatty acid, 8-21; product of reaction of fatty acid or vegetable oil with monoethanol amine or diethanol amine at weight ratio of 2:6:1, 3-20; mixture based on dioxane alcohols and ethers, 2-20; and water, the balance. Concentrate further comprises 1-7 wt % of alkylbenzene sulfonic acid. EFFECT: high stability at low temperatures and storage, high anticorrosion properties and bioresistance. 2 cl, 25 ex, 3 tbl
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