FIELD: metalworking. SUBSTANCE: concentrate contains, wt %: mineral oil 30-40, monoethanolamine 6-12, boric acid 2-10, fatty acid 18-26, nonionic surfactant 0.1-10, alcohol or alcohol-water mixture - the balance. Concentrate can additionally contain 1-5% of alkylbenzenesulfonic acid. EFFECT: increased resistance to hardness salts and reduced inclination to foaming. 2 cl, 2 tbl
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