| 摘要 |
The invention relates to hydraulic oils of extreme pressure and anti-wear properties, which are used in the lubricant industry as well as in the machine building industry, as fluids for power transmission in driving or execution hydraulic systems. According to the invention, the said oils comprise 91...98.7% basic parafine oils and naphtene or mixtures thereof, with a viscosity in the range between 5 and 220 cSt, at 40 degree C; 0.4...1.5% anti-oxidant and anticorrosive additive based on butylated phenolic compounds and aromatic amines or dialkylditiophosphate; 0.4...1.5% anti-wear and extreme pressure additive, with 19...35% sulphur and 0.3...3% phosphorus; optionally, up to 6 % of viscosity index improving additive based on olefines, copolymers or polyalkylmethacrylates; 0...0.5% depressant additive; 0...0.003% silicone anti-foaming, the procentages being expressed by weight.
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