Less corrosive organomolybdenum compounds as lubricant additives
AssigneeVanderbilt Chemicals, LLC
InventorsBrian M. Casey, Vincent J. Gatto
Life of this patent
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Abstract
A molybdate ester represented by the following formula: where R1 is a hydrocarbon chain, R2 is either a hydrogen atom or a hydrocarbon chain, and m and n are independently from 1 to 5, is effective when used in a lubricating composition in an amount sufficient to provide about 50-5000 ppm of molybdenum, with respect to friction and wear reduction, while providing improved protection against copper and lead corrosion.
Claims9
A molybdate ester represented by the following formula:
- where R1 is a hydrocarbon chain, R2 is either a hydrogen atom or a hydrocarbon chain, and m and n are independently from 1 to 5.
A compound prepared by reacting
- (a) a carboxylic acid or ester, with
- (b) one of (i) 2-aminoethyl-ethanolamine, (ii) alkyloxypropyl-1,3-diaminopropane, (iii) alkyloxyethyl-1,3-diaminopropane, and (iv) alkyloxypropyl-1,2-diaminoethane;
- and
- (c) glycidol;
- (d) followed by reaction with a molybdenum source.
A lubricating composition comprising a major amount of lubricating base fluid and a molybdate ester represented by the following formula:
- where R1 is a hydrocarbon chain, R2 is either a hydrogen atom or a hydrocarbon chain, and m and n are independently from 1 to 5, the molybdate ester being present in an amount sufficient to provide about 50-5000 ppm molybdenum in the lubricating composition.
The lubricating composition comprising a major amount of lubricating base fluid and a compound prepared by reacting
- (a) a carboxylic acid or ester, with
- (b) one of (i) 2-aminoethyl-ethanolamine, (ii) alkyloxypropyl-1,3-diaminopropane, (iii) alkyloxyethyl-1,3-diaminopropane, and (iv) alkyloxypropyl-1,2-diaminoethane;
- and
- (c) glycidol;
- (d) followed by reaction with a molybdenum source.
A method of manufacturing a molybdate ester, comprising the steps of, reacting
- (a) a carboxylic acid or ester, with
- (b) one of (i) 2-aminoethyl-ethanolamine, (ii) alkyloxypropyl-1,3-diaminopropane, (iii) alkyloxyethyl-1,3-diaminopropane, (iv) alkyloxypropyl-1,2-diaminoethane;
- and
- (c) glycidol;
- (d) followed by a reaction with a molybdenum source, wherein the molybdate ester is represented by the following formula:
- where R1 is a hydrocarbon chain, R2 is either a hydrogen atom or a hydrocarbon chain, and m and n are independently from 1 to 5.
Dependencies are inferred from the claim text.