LUBRICANT COMPOSITION BASED ON METAL NANOPARTICLES
First Claim
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1. A lubricant composition comprising at least one base oil, at least one dispersant having a weight-average molecular weight greater than or equal to 2000 Daltons and metal nanoparticles in a content by weight ranging from 0.01 to 2% with respect to the total weight of the lubricant composition, the metal nanoparticles being concentric polyhedrons with a multilayer or sheet structure.
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Abstract
The present invention relates to a lubricant composition comprising a dispersant of high molecular weight and metal nanoparticles. The lubricant composition according to the invention simultaneously has good stability and good anti-flaking properties.
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Citations
19 Claims
- 1. A lubricant composition comprising at least one base oil, at least one dispersant having a weight-average molecular weight greater than or equal to 2000 Daltons and metal nanoparticles in a content by weight ranging from 0.01 to 2% with respect to the total weight of the lubricant composition, the metal nanoparticles being concentric polyhedrons with a multilayer or sheet structure.
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14. (canceled)
- 15. A method for lubricating gearboxes or axles, the method comprising adding a lubricant composition into gearboxes or axles, the lubricant composition comprising at least one base oil, at least one dispersant having a weight-average molecular weight greater than or equal to 2000 Daltons and metal nanoparticles in a content by weight ranging from 0.01 to 2% with respect to the total weight of the lubricant composition, the metal nanoparticles being concentric polyhedrons with a multilayer or sheet structure.
- 17. A method for reducing the flaking of a mechanical part, the method comprising adding a lubricant composition into the mechanical part, the lubricant composition comprising at least one base oil, at least one dispersant having a weight-average molecular weight greater than or equal to 2000 Daltons and metal nanoparticles in a content by weight ranging from 0.01 to 2% with respect to the total weight of the lubricant composition, the metal nanoparticles being concentric polyhedrons with a multilayer or sheet structure.
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19. (canceled)
Specification