Grease composition
AssigneeTotal Rafinage Marketing
InventorsAlain Bouffet, Franck Bardin
Life of this patent
Estimating the term…
Abstract
The disclosure relates to a grease composition comprising: (A) a synthetic base oil in majority consisting of alkylaromatic(s); (B) a thickener in majority consisting of at least one metal soap of fatty acids; and (C) a solid lubricant in majority consisting of nanoparticulate polytetrafluorethylene, at least 85% of the particles of which have a size of less than one micron.
Claims24
A grease composition comprising:
- (A) a synthetic base oil in majority consisting of alkylaromatic(s);
- (B) a thickener in majority consisting of at least one metal soap of fatty acids;
- and
- (C) a solid lubricant in majority consisting of nanoparticulate polytetrafluoroethylene, at least 85% of the particles of which have a size of less than one micron.
The composition according to the preceding claim, wherein the oil in the form of alkylaromatics makes up at least 80% by weight of the base oil in said composition.
The composition according to the preceding claim, wherein the composition comprises 5 to 15% by weight based on the total weight of the composition, of a synthetic oil of the polyalphaolefin type.
A method for preparing a grease, the method comprising:
- dissolving one or more fatty acids in a fraction of the base oil or of the base oil mixture
- adding metal compounds;
- saponifying fatty acids with said metal compounds;
- and
- incorporating nanoparticulate polytetrafluoroethylene, for which at least 85% of the particles have a size of less than one micron.
Dependencies are inferred from the claim text.