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US 7,141,535 B2Granted
Lubricating grease, preparation and use thereof, in particular for lubricating contacts involving elastomers
OwnerPierre Belot, Jean-Marie Pinocheinventors
Life of this patent
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Abstract
In a particular embodiment, the invention concerns a lubricating grease having 70 to 95 percent by weight of a mixture that includes at least a first ester of fatty acid and of sorbitan, and at least a second ester of fatty acid and of polyoxyalkylated sorbitan. The esters are present in quantities by weight, relative to the weight of the mixture, of 10 to 90 percent and 90 to 10 percent respectively. The grease also includes from 5 to 30 percent by weight of at least one thickening agent.
Claims24
Lubricating grease, characterized in that it contains:
- from 70 to 95% by weight of a mixture comprising at least a first ester of fatty acid and of sorbitan and at least a second ester of fatty acid and of polyoxyalkylated sorbitan, these esters being present in quantities by weight, relative to the weight of the said mixture, of 10 to 90% and 90 to 10%, respectively;
- and
- from 5 to 30% by weight of at least one thickening agent.
A method for lubricating, comprising:
- providing a grease comprising from 70 to 95% by weight of a mixture comprising at least a first ester of fatty acid and of sorbitan and at least a second ester of fatty acid and of polyoxyalkylated sorbitan, these esters being present in quantities by weight, relative to the weight of the said mixture, of 10 to 90% and 90 to 10%, respectively;
- and from 5 to 30% by weight of at least one thickening agent;
- placing the grease between two materials.
Dependencies are inferred from the claim text.