Lubricant additive
AssigneeEthyl Corporation
InventorRobert E. Malec
Life of this patent
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Abstract
High molecular weight N-hydrocarbyl-substituted quaternary ammonium salts in which the hydrocarbyl group has a molecular weight of from about 350-3000 such as a polybutene ammonium chloride are effective detergents and dispersants for gasoline and lubricating oils.
Claims6
A high molecular weight quaternary ammonium chloride having at least one substantially saturated poly-C.sub.2-4 olefin hydrocarbon group having an average molecular weight of from about 800 to about 1400 bonded to a quaternary ammonium nitrogen atom, the remaining groups bonded to said quaternary ammonium nitrogen atom being selected from the group consisting of C.sub.1-20 alkyl, C.sub.2-8 hydroxyalkyl and C.sub.3-20 alkenyl.
Dependencies are inferred from the claim text.