Abstract:
The invention comprises lubricating compositions and hydraulic fluids containing substituted N, N'-diaryl-σ-phenylenediamine compounds that impart good levels of oxidation inhibition in the lubricants and hydraulic fluids.
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.
Abstract:
Lubricating oil used for the lubrication of engines run on biodiesel fuels are improved in their resistance to oxidation, sludge and deposits formation by the addition to said lubricating oil of detergent to increase the TBN of the lubricating oil or the addition of organic bases.
Abstract:
Lubricating oil of reduced friction comprise lubricating oil base stock and dissolved therein carbon nanomaterials functionalized on their surface with ester or amide functionality and made using a technique involving multiple space apart in time or dropwise additions of reactants to the carbon nanomaterials.
Abstract:
The addition of alkyl salicylic acids and esters represented by Formula I (I) where R 1 = H or C 12 to C 22 linear alkyl group; R 2 = H or linear C 12 to C 22 carbonyl group; and R 3 = linear C 12 to C 22 alkyl group reduces the pour point of a hydrocarbon base oil. Thus, both a method for reducing the pour point of hydrocarbon oils and lubricating composition containing pour point reducing salicylates are provided. The hydrocarbon base oil in such method and composition preferably is a Group III base oil.
Abstract:
The smoke index of a two-stroke engine is improved by utilizing as the engine lubricant a two-stroke engine oil that comprises a major amount of a GTL base oil.
Abstract:
Carbon nanomaterials functionalized on their surface with ester or amide functionality are made using a technique involving multiple space apart in time or dropwise additions of reactants to the carbon nanomaterials, and are soluble in hydrocarbon liquids.
Abstract:
Lubricating oil compositions of the invention comprise a major amount of a base oil of lubricating viscosity and an effective amount of at least one lubricant antioxidant, the base oil comprising a blend of a Group III base oil derived from a synthesis gas, and a Group IV base oil wherein the ratio of the Group III to Group IV base oils is such that the lubricating composition exhibits an oxidation stability determined by a measure of high temperature deposits that is less than half the mathematical sum of the oxidative stability determined for each of the unblended Group III and Group IV oils containing the same antioxidant in the same amount as in the blend.
Abstract:
The invention comprises lubricating compositions and hydraulic fluids containing N, N'-diaryl-m-phenylene diamine compounds that impart good levels of oxidation inhibition in the lubricants and hydraulic fluids.
Abstract:
The present invention is directed to lubricating oils exhibiting improved resistance to oxidation and deposit/sludge formation comprising a lubricant base oil and an effective amount of a catalytic antioxidant comprising one or more polymetal organometallic compound, to a method for improving the antioxidancy and the resistance to deposit/sludge formation of formulated lubricating oil compositions by the addition thereto of an effective amount of the aforementioned polymetal organometallic compound, and to an additive concentrate containing the aforementioned polymetal organometallic compound.