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US 8,445,415 B2Granted
Grease composition
AssigneeNissan Motor Co., Ltd.
InventorsYutaka Mabuchi, Akira Nakagawa
Life of this patent
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Abstract
There is provided a grease composition, including: a base oil; a metal soap thickener formed of at least one metal selected from the group consisting of lithium, calcium, magnesium and aluminum and a fatty acid containing at least one selected from the group consisting of a hydroxyl group, a carboxyl group and a carboxylic acid metal salt group in each molecular structure; and nanoparticles formed of at least one selected from the group consisting of oxides, carbides and diamond materials.
Claims3
A grease composition, comprising:
- a base oil;
- a metal soap thickener selected from the group consisting of lithium 12-hydroxystearate, lithium stearate, calcium stearate, magnesium stearate, and aluminum stearate;
- and
- nanoparticles formed of single crystal diamond and have an average primary particle size of 5 nm or smaller,
- wherein the grease composition does not include organic molybdenum.
2 more elements
Dependencies are inferred from the claim text.