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US 8,822,394 B2Granted
Lubricating grease compositions
AssigneeShell Oil Company
InventorStefan Daegling
Life of this patent
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Abstract
Use of a lubricating grease composition in a mass flywheel application wherein the lubricating grease composition comprises: (i) a base oil having a density in the range of from 800 to 1000 Kg/m3; and (ii) a urea compound having a density in the range of from 850 to 1050 Kg/m3; wherein the difference in the densities of the base oil (i) and the urea compound (ii) is less than 50 Kg/m3. The lubricating grease compositions according to the present invention are particularly useful for reducing oil bleeding and for improving shear stability properties in a dual mass flywheel application.
Claims5
A method comprising:
- applying a lubricating grease composition to a mass flywheel, wherein the lubricating grease composition comprises:
- (i) a base oil having a density in the range of from 800 to 1000 Kg/m3;
- and
- (ii) a diurea compound having a density in the range of from 850 to 1050Kg/m3;
- wherein the difference in the densities of the base oil (i) and the diurea compound (ii) is less than 50 Kg/m3, and
- wherein the diurea compound is obtained by reacting a diisocyanate and a mixture of monoamines, the mixture of monoamines comprising a C6-C10 aliphatic amine and a C14-C20 alphatic amine.
3 more elements
Dependencies are inferred from the claim text.