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US 10,526,559 B2Granted
Aromatic detergents and lubricating compositions thereof
AssigneeThe Lubrizol Corporation
InventorsKamalakumari Kunchithapatham Salem, David J. Moreton, Mohamed G. Fahmy, Gary M. Walker, James P. Roski, Adam Cox, W. Preston Barnes, Ewan E. Delbridge, Jason E. Melvin, Robert D. Dura
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Abstract
The disclosed technology provides a lubricating composition comprising an oil of lubricating viscosity and 0.2 wt % to 10 wt % of a salt of a hydroxyl functional aromatic compound. The disclosed technology further relates to a method of lubricating a mechanical device with the lubricant composition.
Claims24
A lubricating composition comprising:
- an oil of lubricating viscosity;
- and
- 0.2 wt % to 10 wt % of an oil soluble salt of a hydroxyl functional aromatic compound, wherein the salt comprises:
- (a) a conjugate anion of a hydroxyl functional aromatic compound, the aromatic compound selected from a neutral salt having a TBN of 130 to 200 mg KOH/g as determined by ASTM D2986-11 with a metal ratio of 0.7 to less than 2 or an overbased salt having a TBN of greater than 200 mg KOH/g as determined by ASTM D2986-11 with a metal ratio of 2 to 5, the aromatic compound being further represented by formula:
- wherein
- n is 1 or 2,
- R1 or R2 are each independently hydrogen, a hydrocarbyl group containing 1 to 32 carbon atoms, or —(CH2CHR4—O—)mR5;
- R3 is hydrogen, a hydrocarbyl group containing 1 to 150 carbon atoms or a hydrocarbyl group containing 6 to 36 carbon atoms, or an acyl group, —C(═O)OR6, or —(CH2CHR4—O—)mR5;
- R4 is hydrogen or a hydrocarbyl group containing 1 to 32 carbon atoms, or CH2OR8;
- R5 is hydrogen or a hydrocarbyl group containing 1 to 24 carbon atoms, or —(C═O)R7;
- R6 is a hydrocarbyl group containing 1 to 24 carbon atoms, or —(CH2CHR4—O—)mR5;
- R7 may be a hydrocarbyl group containing 1 to 24 carbon atoms;
- R8 may be hydrogen or a hydrocarbyl group containing 1 to 24 carbon atoms;
- m=1 to 20;
- x is 0 to 2 and each R3 is independently a hydrocarbyl group containing at least one carbon atom where together the R3 moieties form a 5- or 6-membered saturated, partially unsaturated or unsaturated hydrocarbyl ring,
- with the proviso that at least one of R1, R2 or R3 is not hydrogen and at least one of R1, R2 or R5 is a hydrogen;
- and
- (b) a cation having an atomic weight of at least 10.
15 more elements
A method of lubricating an internal combustion engine comprising supplying to the internal combustion engine a lubricating composition including an oil soluble salt comprising:
- (a) a conjugate anion of an aromatic compound, the aromatic compound a being neutral salt having a TBN of 130 to 200 mg KOH/g as determined by ASTM D2986-11 with a metal ratio of 0.7 to less than 2 or an overbased salt having a TBN of greater than 200 mg KOH/g as determined by ASTM D2986-11 with a metal ratio of 2 to 5, the aromatic compound being further represented by formula:
- wherein
- n is 1 or 2,
- R1 or R2 are each independently hydrogen, a hydrocarbyl group containing 1 to 32 carbon atoms, or —(CH2CHR4—O—)mR5;
- R3 is hydrogen, a hydrocarbyl group containing 1 to 150 carbon atoms or a hydrocarbyl group containing 6 to 36 carbon atoms, or an acyl group, —C(═O)OR6, or —(CH2CHR4—O—)mR5;
- R4 is hydrogen or a hydrocarbyl group containing 1 to 32 carbon atoms, or CH2OR8;
- R5 is hydrogen or a hydrocarbyl group containing 1 to 24 carbon atoms, or —(C═O)R7;
- R6 is a hydrocarbyl group containing 1 to 24 carbon atoms, or —(CH2CHR4—O—)mR5;
- R7 may be a hydrocarbyl group containing 1 to 24 carbon atoms;
- R8 may be hydrogen or a hydrocarbyl group containing 1 to 24 carbon atoms;
- m=1 to 20;
- x is 0 to 2, or x is 2 and each R3 is independently a hydrocarbyl group containing at least one carbon atom where together the R3 moieties form a 5- or 6-membered saturated, partially unsaturated or unsaturated hydrocarbyl ring;
- with the proviso that at least one of R1, R2 or R3 is not hydrogen and at least one of R1, R2 or R5 is a hydrogen;
- and
- (b) a cation having an atomic weight of at least 10.
12 more elements
Dependencies are inferred from the claim text.