Premium wear-resistant lubricant containing non-ionic ashless anti-wear additives
AssigneeExxonMobil Research and Engineering Company
InventorsJacob Habeeb, Heather Haigh
Life of this patent
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Abstract
A premium wear resistant lubricant comprises a base stock, preferably a GTL liquid or the liquid isomerization product of slack wax or F-T wax, and a non-ionic ashless anti-wear additive. The non-ionic ashless antiwear additive is preferably at least one of thiosalicylic acid or alkyl ester thereof, thioxomalonate, 2,2-dithiopyridine and thiazolidine. The lubricant may also contain additional base stock materials selected from other hydrocarbonaceous and synthetic base stock materials in admixture with the GTL liquid or slack wax or F-T derived base stock.
Claims25
A wear resistant lubricant formulation comprising a base oil selected from the group consisting of natural oils, synthetic oils, unconventional oil and mixtures thereof boiling in the lube oil boiling range in admixture with an effective amount of at least one non-ionic ashless antiwear additive.
A lubricating oil formulation comprising an isoparaffinic basestock comprising a GTL base stock/base oil or a base oil derived from slack wax, waxy paraffinic F-T hydrocarbons by hydroisomerization, or mixture thereof, and an effective amount in the range of about 0.065 to 650 mmoles of at least one non-ionic ashless antiwear additive selected from (I), (II), (III), and (IV),
- wherein R1 and R2 are the same or different and selected from H and organic groups containing 6 to 30 carbons, and R3 is selected from hydrogen and organic groups containing 1 to 20 carbons;
- wherein R4 and R5 are the same or different and are selected from organic groups having from 1-20 carbons;
- wherein R6 to R13 are the same or different and are selected from hydrogen and organic groups having 1 to 20 carbons;
- and
- wherein R14 to R20 are the same or different and are selected from hydrogen and organic groups having 1 to 20 carbons.
A lubricant comprising an isoparaffinic basestock derived from a waxy paraffinic hydrocarbon feed produced by a F-T hydrocarbon synthesis process and an effective amount in the range of about 0.065 to about 650 mmoles of at least one non-ionic ashless antiwear additive selected from (I), (II), (III), and (IV),
- wherein R1 and R2 are the same or different and are selected from hydrogen and organic groups containing 6 to 30 carbons, and R3 is selected from hydrogen and organic groups containing 1 to 20 carbons;
- wherein R4 and R5 are the same or different and are selected from organic groups having from 1-20 carbons;
- wherein R6 to R13 are the same or different and are selected from hydrogen and organic groups having 1 to 20 carbons;
- and
- wherein R14 to R20 are the same or different and are selected from hydrogen and organic groups having 1 to 20 carbons.
Dependencies are inferred from the claim text.