Dispersant composition for lubricating oil, additive packages and lubricating oil compositions comprising the dispersant ingredients of said composition, a method of imparting dispersancy to a lubricating oil, and ingredients intended for use in a dispersant mixture

摘要

Lubricating oil dispersancy is improved by the use of a novel composition comprising a synergistic mixture of a boronated hydrocarbon-substituted succinic amide/imide/ ester of an oxyalkylated amine and a Mannich condensation product of a hydrocarbon-substituted phenol, formaldehyde and an amine, and, optionally, a fatty acid and/or a boronating agent. The invention includes such compositions, the ingredients of such a composition when intended for such use, lubricating oil compositions containing the same ingredients, a method of improving lubricating oil dispersancy using the same ingredients and additive packages for lubricating oil using the same ingredients.