Low overbased alkylaryl sulfonates
AssigneeChevron Chemical Company
InventorsWilliam Frank King, Curtis Bay Campbell, Olivier Clement, Jean-Louis Le Coent, Steven Gale Lockett, Richard James Nelson, Pierre Tequi
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Abstract
Low overbased alkaline earth metal alkylaryl sulfonate having a Total Base Number of from about 2 to about 30, a dialkylate content of 0% to about 25% and a monoalkylate content of about 75% to about 90% or more, wherein the alkylaryl moiety is alkyltoluene or alkylbenzene in which the alkyl group is a C15-C21 branched chain alkyl group derived from a propylene oligomer are useful as lubricating oil additives.
Claims2
A method of preparing a low overbased alkaline earth metal alkyltoluene sulfonate by reacting an alkyltoluene sulfonic acid with an active source of alkaline earth metal in the presence of solvent wherein the solvent does not comprise an organic solvent.
Dependencies are inferred from the claim text.