Lubricant Composition Containing Metal Alkanoate
AssigneeInfineum International Limited
InventorsBenjamin G. N. Chappell, Mark Peter Driver, Emily Claire Mason, Alice Hei Man Leung
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Abstract
This invention relates to a lubricating composition comprising or resulting from the admixing of: base oil, detergent, and one or more metal alkanoates having a quaternary carbon atom at the 2 position, the 2′ position, or both the 2 and 2′ positions, where the lubricating composition preferably has an adhesive wear of 100 hours or more, a foam volume of 70 ml or less at 24° C., and 50 ml or less at 93.5° C., and, optionally, a total base number of 7 mgKOH/g or more.
Claims30
A lubricating composition comprising or resulting from the admixing of:
- base oil, detergent, and one or more group 5, 10, 11, 12, or 13 metal alkanoates having a quaternary carbon atom at the 2 position, the 2′ position, or both the 2 and 2′ positions, where the lubricating composition has:
- an adhesive wear of 100 hours or more, as determined by ASTM D8074-16, a foam volume of 70 ml or less at 24° C. and 50 ml or less at 93.5° C., as determined by ASTM D892, option A and optionally a total base number of 7 mgKOH/g or more.
A lubricating composition having an adhesive wear result of 100 hours or more, as determined by ASTM D8074-16 and a ratio of Zn to P of 1.1 to 4.7 by wt % where the lubricating composition contains a zinc-containing compound other than zinc dialkyl dithiophosphate.
A lubricating composition having an adhesive wear of 100 hours or more, as determined by ASTM D8074-16 and at least 1000 ppm zinc, where the lubricating composition contains a zinc-containing compound other than zinc dialkyl dithiophosphate.
A method of lubricating an internal combustion engine during operation of the engine comprising:
- (i) providing to a crankcase of the internal combustion engine a lubricating composition comprising a detergent and one or more metal alkanoates having a quaternary carbon atom at the 2 position, the 2′ position, or both the 2 and 2′ positions;
- (ii) providing a hydrocarbon fuel in the internal combustion engine;
- (iii) combusting the fuel in the internal combustion engine;
- (iv) obtaining an adhesive wear of 100 hours or more, as determined by ASTM D8074-16, in the internal combustion engine lubricated by the composition;
- and
- (v) wherein the lubricating composition has a foam volume of 70 ml or less at 24° C. and 50 ml or less at 93.5° C., as determined by ASTM D892, option A, and a total base number of 7 mgKOH/g or more.
A method of lubricating a hydrogen and or ammonia fueled internal combustion engine during operation of the engine comprising:
- (i) providing to a crankcase of the internal combustion engine a lubricating composition comprising a detergent and one or more metal alkanoates having a quaternary carbon atom at the 2 position, the 2′ position, or both the 2 and 2′ positions;
- (ii) providing fuel comprising hydrogen and or ammonia in the internal combustion engine;
- and
- (iii) combusting the fuel in the internal combustion engine.
Dependencies are inferred from the claim text.