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AssigneeChevron Chemical Company
InventorsWILLIAM FRANK KING, CURTIS BAY CAMPBELL, OLIVIER CLEMENT, JEAN-LOUIS LECOENT, STEVEN GALE LOCKETT, RICHARD JAMES NELSON, PIERRE TEQUI
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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.
A 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 100%, 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.
The low overbased alkaline earth metal alkylaryl sulfonate of claim 8 wherein the alkylaryl moiety has an average molecular weight of about 300 to about 308.
A lubricating oil containing a 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 100%, 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.
A lubricating oil formulation comprising:
A concentrate comprising about from 10 weight % to 90 weight % of a compatible organic liquid diluent and about from 0.5 weight % to 90 weight % of a 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 100%, 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.
A method of producing a lubricating oil composition comprising blending the following components together:
In a method of preparing an alkaline earth metal alkyltoluene sulfonate by reacting an alkyltoluene sulfonic acid with an active source of alkaline earth metal in the oresence of a solvent, the improvement comprising using water as the solvent.
Dependencies are inferred from the claim text.