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AssigneeThe Lubrizol Corporation
InventorsDixit Parmar, Joanne L. Jones, Daniel J. Saccomando, Nicolas Proust, Patrick E. Mosier
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The disclosed technology relates to a dispersant composition comprising the reaction product of a polyolefin acylating agent and a polyamine having a sterically hindered head group. In addition, the technology relates to lubricating compositions containing the dispersant composition and an oil of lubricating viscosity, as well as methods of employing the lubricating composition in an engine and engine oils. Lubricating oils containing the dispersants of the disclosed technology simultaneously achieves seal compatibility, wear, deposit, varnish and corrosion control while also maintaining fuel economy performance over a broad temperature range.
A lubricating composition suitable for reducing engine sludge and degradation of elastomeric seals comprising a dispersant composition comprising the reaction product of a hydrocarbyl substituted acylating agent and a polyamine containing at least one primary amine and at least one sterically hindered amine.
Dependencies are inferred from the claim text.