| 摘要 |
The invention relates to methods for producing additives to lubrication oils and to lubrication oils containing such additives. In order to produce the colloidal dispersions of carbonate of alkali-earth metals, a composition having a general formula (1), which is disclosed in the formula of the invention, is used. Said composition is produced by the interaction of dyalkyldithiophosphate and/or zinc dyalkylaryl-dithiophosphate with oxide or hydroxide of alkaline-earth metal in the medium of hydrocarbon solvent and water at a temperature ranging from 20 to 75 DEG C during 0.5-1 hour. In order to produce the colloidal dispersion of an alkaline-earth metal in oil, one or several surface-active substances are mixed in the medium of mineral oil and a hydrocarbon solvent with one or several compositions of the formula (1) in a quantity of 5-50 % of a reaction mixture, oxide or hydroxide of alkaline-earth metal and water, the thus obtained mixture being treated by carbon dioxide at a temperature ranging from 20 to 75 DEG C during 0.5-1 hour. In the other method, a surface-active substance is mixed with dyalkyldithiophosphate and/or zinc dyalkylaryl-dithiophosphate in a quantity of 5-50 % of a reaction mixture, oxide or hydroxide of alkaline-earth metal in the medium of a mineral oil, hydrocarbon solvent and water, the thus obtained mixture being treated by carbon dioxide at a temperature ranging from 20 to 75 DEG C during 0.5-1 hour. Said colloidal dispersions are used as additives to lubrication oils at a ratio of 2-15 mass %. Said invention makes it possible to reduce the production costs of the additives and oils and improves the functional characteristics thereof.
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