Molybdenum-containing lubricant additive compositions and processes for making and using same
AssigneeEthyl Corporation
InventorVincent J. Gatto
Life of this patent
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Abstract
The invention relates to an improved process for producing organomolybdenum compositions with high molybdenum content that are highly useful as lubricant additives, in which the process involves reacting a fatty oil with a diamine, followed by reaction with a molybdenum source. The process of the present invention does not require a volatile organic solvent to promote molybdenum incorporation and produces an organomolybdenum composition having a high molybdenum content. In addition, the process can be conducted in the absence of sulfur and phosphorus-containing reactants.
Claims25
A process of lubricating a crankcase comprising:
- lubricating the crankcase with an oil soluble composition comprising the reaction product of a fatty oil, a diamine, and a molybdenum source, wherein the diamine has the chemical structure:
- wherein x is 1 or 2, and R is an alkyloxyalkylene group represented by —X1—O—X2, X1 is an alkylene of 2, 3 or 4 carbons, and X2 is an alkyl moiety having 3 to 30 carbon atoms, wherein the fatty oil comprises a triglyceride having fatty acid moieties, and said fatty acid moieties comprise C12 to C22 hydrocarbon chains, and wherein the oil soluble composition includes a molybdenum content of from about 8.1 wt % to about 15 wt %.
A process for lubricating a crankcase comprising adding a lubricant to said crankcase, said lubricant including:
- (a) an organomolybdenum composition comprising the reaction products of (i) at least one fatty oil;
- (ii) at least one mono-alkylated alkylene diamine;
- and (iii) a molybdenum source, wherein the molar ratio of molybdenum source to mono-alkylated alkylene diamine is from about 2:3 to about 1.15:1;
- (b) an organomolybdenum composition comprising the reaction products of (i) at least one fatty oil;
- (ii) at least one mono-alkylated alkylene diamine;
- and (iii) a molybdenum source, wherein the total base number (TBN) as determined by ASTM D2896 is less than 47.4 mg KOH/gram;
- or
- (c) an organomolybdenum composition comprising the reaction products of (i) at least one fatty oil;
- (ii) at least one mono-alkylated alkylene diamine;
- and (iii) a molybdenum source, wherein the molor ratio of molybdenum source to mono-alkylated alkylene diamine is from about 2:3 to about 1.15:1 to a crankcase, and wherein the total base number (TBN) as determined by ASTM D2896 is less than 47.4 mg KOH/gram,
- wherein said organomolybdenum compositions are prepared in the absence of volatile organic solvent and sulfur-containing reactants.
A process for lubricating a crankcase comprising adding a lubricant to said crankcase, said lubricant including an organomolybdenum composition comprising the reaction products of (i) at least one fatty oil;
- (ii) at least one mono-alkylated alkylene diamine;
- and (iii) a molybdenum source, wherein the organomolybdenum composition includes a molybdenum content of from about 8.1 wt % to about 15 wt %.
A process for preparing an engine oil composition having improved deposit control performance, said process comprising:
- including a minor amount of a molybdenum containing composition obtained by reacting a fatty oil, a diamine, and a molybdenum source, wherein the fatty oil and diamine are reacted to form an intermediate reaction mixture, wherein the molybdenum source is incorporated with said intermediate reaction mixture, and the incorporation is performed at 80° C. to 130° C., wherein said molybdenum composition is substantially sulfur-free, and wherein the molybdenum content of said molybdenum composition is about 8.1 wt % to about 15 wt %, in a major amount of an oil suitable for an engine whereby said engine oil composition is obtained.
An engine oil composition having improved deposit control performance, said engine composition obtained by a process comprising:
- including a minor amount of a molybdenum containing composition obtained by reacting a fatty oil, a diamine, and a molybdenum source, wherein the fatty oil and diamine are reacted to form an intermediate reaction mixture, wherein the molybdenum source is incorporated with said intermediate reaction mixture, and wherein the incorporation is performed at 80° C. to 130° C., in a major amount of an oil suitable for an engine whereby said engine oil composition is obtained, wherein the molybdenum containing composition includes a molybdenum content of about 8.1 wt % to about 15 wt %, wherein said minor amount is an amount sufficient to provide at least 50 ppm of molybdenum in the engine oil composition and wherein the molybdenum containing composition contains less than 0.05 wt % sulfur.
Dependencies are inferred from the claim text.