摘要:
A lubricant composition including: tungsten disulfide having a particle size of 4 to 160 nm; an alkali metal borate; a borate ester; and a base oil.
摘要:
Quenching oil compositions comprising (1) an oil having kinematic viscosity (ASTM Test Method D-445) at 40° C. ranging from about 4 to about 45 mm2sec−1 (about 40 to about 210 Saybolt Universal Seconds (SUS)) and having a saturated content from about 80% to about 100%; and (2) an alkali metal salt of saligenin derivative and optionally, further comprising at least one of (3) an aliphatic polyolefin having Mn ranging from about 300 to about 10,000; (4) at least one member selected from the group consisting of metal salts of hydrocarbyl substituted phenols, salicylic acids, carboxylic acids, and sulfonic acids; and (5) at least one member selected from the group consisting of hydrocarbyl substituted succinic esters, amides, ester-amides, imides, amine salts, acid-esters, acid-amides ester-amine salts, amide-amine-salts and acid-amine salts, and methods of heat treating metals comprising employing said quenching oils.
摘要:
A phthalic acid such as terephthalic acid is made soluble in an oil of lubricating viscosity by first mixing it with at least one phosphorus compound. The resulting product is useful for reducing corrosion in a transmission lubricant.
摘要:
The invention provides synergistic combinations of phosphorus acid-containing compounds with ashless antioxidants. These combinations dramatically improve the oxidation stability of lubricating compositions, particularly power transmission fluids such as automatic transmission fluids.
摘要:
The fluids have an oil-soluble boron content of about 0.001 to about 0.1%, an oil-soluble phosphorus content of about 0.005 to about 0.2%, and either no metal additive content or an oil-soluble metal content as one or more metal-containing additives of no more than about 100 ppm. Included in the fluids are: (a) at least 70 wt % of hydrogenated poly-.alpha.-olefin oligomer fluid with a viscosity in the range of 2-6 cSt at 100.degree. C.; (b) 2-20 wt % of acrylic viscosity index improver; (c) 4-25 wt % of oil-soluble dialkyl ester of a C.sub.4 to C.sub.14 .alpha.,.omega.-dicarboxylic acid with a pour point of -45.degree. C. or lower; (d) ashless dispersant; (e) friction modifier; and (f) oil-soluble inhibitors. The components are such that the fluid has (i) a KV of at least 6.8 cSt at 100.degree. C., (ii) a BV of 15,000 cP or less at -40.degree. C., (iii) a KV at 100.degree. C. of at least 6.0 cSt after 4 hours and at least 5.0 cSt after 20 hours in the Volkswagen taper roller bearing shear stability test. The fluids possess other excellent performance properties.
摘要:
A lubricating composition of the present invention comprises a base oil for lubricating oil or base grease; at least one molybdenum compound as component (A) selected from the group consisting of a selected sulfurized oxymolybdenum dithiocarbamate, a selected sulfurized oxymolybdenum dithiophosphate and a selected molybdenum amine compound; and a (poly)glycerol ether and/or a (poly)oxyalkylene glycol monoalkyl ether as component (B).
摘要:
This invention provides oil-soluble complexes of oil-insoluble phosphorus-free strong mineral acids and alcohols. The complexes are useful antiwear additives in lubricating oils, particularly automatic transmission fluids.
摘要:
This invention relates to synthetic based turbo oils, preferably polyol ester-based turbo oils which exhibit exceptional load-carrying capacity by use of a synergistic combination of sulfur (S)-based and phosphorous (P)-based load additives. The S-containing additive of the present invention is sulfur containing carboxylic acid (SCCA), preferably the C.sub.1 -C.sub.4 thioether carboxylic acid and the P-containing component is one or more amine phosphates. The turbo oil composition consisting of the dual P/S additives of the present invention achieves an excellent load-carrying capacity, which is better than that obtained when each additive was used alone at a comparable treat rate to the total combination additive treat rate, and this lower concentration requirement of each additive allows the turbo oil composition to meet or exceed US Navy MII-L-23699 requirements including Oxidation and Corrosion Stability and Si seal compatibility.
摘要:
A method of controlling the friction coefficients and improving the friction durability of an oleaginous compositions, such as an ATF, comprising adding to the composition a combination of competing additives comprising (a) at least one friction reducing chemical additive having a polar head group other than a dialkoxylated amino group and a friction reducing substituent group, and at least one non-friction reducing additive (b) having a dialkoxylated amino polar head group and having a substituent group which has no material friction raising or lowering effect (non-friction reducing additive) on the composition.
摘要:
This invention relates to synergistic rust inhibiting compositions consisting of (a) N-acylsarcosine compound, (b) dicarboxylic acid having 6 to 48 carbon atoms, and (c) an amine selected from primary, secondary or tertiary amines or imidazoline compounds.Lubricating compositions containing the synergistic rust inhibiting compositions possess good antirust stability.