Overbased alkyl oxy benzene sulfonates as detergents
OwnerWilliam F. King, Richard J. Nelson +1inventors
InventorsWILLIAM F. KING, RICHARD J. NELSON, STEVEN G. LOCKETT
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Abstract
A marine lubricating oil has a major amount of oil of lubricating viscosity; and a minor amount of an overbased, alkyl oxy benzene sulfonate having a TBN of at least 200. Between 40 wt. % and 80 wt. % of the alkyl group is attached at the 4-position and higher positions of the alkyl group. The oxy group can be hydroxy, methoxy, ethoxy, propoxy, butoxy, pentoxy, or hexoxy.
Claims14
An additive comprising an overbased, alkyl oxy benzene sulfonate having a TBN of at least 200, wherein between 40 wt. % and 80 wt. % of the alkyl group is attached at the 4-position and higher positions of the alkyl group, and wherein the oxy is selected from the group consisting of hydroxy, methoxy, ethoxy, propoxy, butoxy, pentoxy, and hexoxy.
An additive produced by a process comprising:
- (a) isomerizing an olefin using an iron pentacarbonyl catalyst to produce an isomerized olefin;
- (b) alkylating an oxy benzene with the isomerized olefin to produce an alkyl oxy benzene, wherein the oxy is selected from the group consisting of hydroxy, methoxy, ethoxy, propoxy, butoxy, pentoxy, and hexoxy;
- (c) sulfonating the alkyl oxy benzene to produce an alkyl oxy benzene sulfonic acid;
- and
- (d) overbasing the alkyl oxy benzene sulfonic acid to produce an overbased, alkyl oxy benzene sulfonate having a TBN of at least 200.
An additive produced by a process comprising:
- (a) alkylating an oxy benzene, wherein the oxy is selected from the group consisting of hydroxy, methoxy, ethoxy, propoxy, butoxy, pentoxy, and hexoxy, with a polyalpha olefin having an activity of at least 80% to produce an alkyl oxy benzene;
- (b) sulfonating the alkyl oxy benzene to produce an alkyl oxy benzene sulfonic acid;
- and
- (c) overbasing the alkyl oxy benzene sulfonic acid to produce an overbased, alkyl oxy benzene sulfonate having a TBN of at least 200.
Dependencies are inferred from the claim text.