Method of improving rust inhibition of a lubricating oil
AssigneeChevron U.S.A. Inc.
InventorMark E. Okazaki
Life of this patent
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Abstract
A method of improving the rust inhibition of a lubricating oil by incorporating a solubility improver having an aniline point less than 10° C. A method of improving the rust inhibition of a lubricating oil by incorporating a solubility improver to enable the lubricating oil to meet the requirements of the MIL-PRF-17331J specification. A method of improving the rust inhibition of a lubricating oil by incorporating a solubility improver, a mixture of mono and diacid amine phosphate salts, and a alkenyl succinic compound into the lubricating oil.
Claims17
A method of improving the rust inhibition of a lubricating oil, comprising:
- incorporating between about 0.10 wt % and about 10 wt %, based on the total weight of the lubricating oil, of a solubility improver having an aniline point less than 2° C. to the lubricating oil;
- wherein the incorporating step enables the lubricating oil to pass a 4 hour TORT B rust test.
A method of improving the rust inhibition of a lubricating oil, comprising:
- incorporating between about 0.10 wt % and about 10 wt %, based on the total weight of the lubricating oil, of a solubility improver having an aniline point less than 10° C. to the lubricating oil;
- wherein the incorporating step enables the lubricating oil to pass a 4 hour TORT B rust test and to meet the requirements of the MIL-PRF-17331J specification.
A method of improving the rust inhibition of a lubricating oil, comprising:
- incorporating:
- a) between about 0.10 wt % and about 10 wt %, based on the total weight of the lubricating oil, of a solubility improver having an aniline point less than 50° C. and b) up to about 0.01 wt % of a mixture of amine phosphate salts, based on the total weight of the lubricating oil, to the lubricating oil;
- wherein the incorporating step enables the lubricating oil to meet the requirements of the MIL-PRF-17331J specification.
A method of improving the rust inhibition of a lubricating oil, comprising:
- incorporating:
- a) a solubility improver having an aniline point less than 100° C.,
- b) between about 0.001 wt % and about 0.01 wt % of a mixture of mono and diacid amine phosphate salts, and
- c) an alkenyl succinic compound,
- into the lubricating oil;
- wherein the incorporating step enables the lubricating oil to pass a 4 hour TORT B rust test.
Dependencies are inferred from the claim text.