摘要:
A method of improving air release in lubricant base stocks and lubricating oils is provided. The method includes providing a Group I base stock, a Group II base stock or a combination thereof and adding to the base stock an effective amount of C7 to C80 paraffin, wherein the lubricant base stock provides air release according to the ASTM D3427 test at least 20% lower than the same lubricant base stock not including the C7 to C80 paraffin. Also provided are lube base stocks and lubricating oils with improved air release and methods of making such base stocks and oils.
摘要:
An embodiment disclosed herein provides a high-temperature lubricant comprising an oil-soluble lubricating base fluid or a water-soluble lubricating base fluid; and elongated carbon nanoparticles that align in flow. In some embodiments, the lubricating composition may be selected from the group consisting of graphene nanoribbons; carbon nanotubes; carbon nanohorns; and any combination thereof.
摘要:
A chemical composition of matter comprising a wax plasticizing agent (plasticizer) tributoxyethyl phosphate, a mixture of selected long chain fatty acids (preferably C10 to C22), and a mixture of selected low-surface tension surfactants, which when added in solution to crude oil or refined products has been shown to lower both the B.S. & W. (rag layer) and the coefficient of friction of crude oils and refined products. This chemical composition of matter is particularly useful as a wax liquefaction, dispersant, and solubilization agent for asphaltene and paraffins in crude oil and refined products. The reduction in the co-efficient of friction resulting from the addition of this product to crude oil will allow crude oil to pump through pipelines with a minimum amount of resistance due to friction (drag).
摘要:
A continuous process with increased production throughput of a high dropping point lithium complex grease composition comprising the steps of heating a mixture of a C12 to C24 hydroxy fatty acid or a C12 to C24 hydroxy fatty acid ester, an aqueous solution of lithium base and at least one base oil at an elevated temperature; removal of volatiles (i.e., water and methanol, etc.) in a dehydration zone; and transferring the mixture to a recycle line wherein additives, a borated additive and at least one base oil are added to afford a formulated grease composition.
摘要:
Provided for are lubricant base stocks with improved filterability. The lubricant base stock includes a bright stock or a heavy neutral and an effective amount of a pour point depressant. The filterability of the base stock as measured by the Membrane Filtration Method is less than or equal to 400 seconds. Also provided for are lubricating oils with improved filterability and methods of improving the filterability of lubricant base stocks.
摘要:
A novel lubricant composition is disclosed. In one embodiment the lubricant composition comprises in admixture: a first base stock component comprising one or more base stocks each having a viscosity of at least 40 cSt, Kv100° C. and a molecular weight distribution (MWD) as a function of viscosity at least 10 percent less than algorithm: MWD=0.2223+1.0232*log (Kv at 100° C. in cSt); and a second base stock component comprising one or more base stocks each having a viscosity less than 10 cSt, Kv100° C.
摘要:
Provided is a lubricating oil composition for an internal combustion engine, including: an organic molybdenum compound as a component (A); a base oil having a kinematic viscosity at 100° C. of 25 mm2/s or more as a component (B); and a base oil having a kinematic viscosity at 100° C. of less than 12.5 mm2/s as a component (C), in which the composition has a kinematic viscosity at 100° C. of 5 mm2/s to 12.5 mm2/s and a phosphorus content of 800 ppm or less.
摘要:
A process oil composition comprising: (i) from 50% to 99.9% by weight of de-asphalted cylinder oil (DACO); (ii) from 0.1% to 20% by weight of a Fischer-Tropsch derived base oil having a kinematic viscosity at 100° C. of not more than 4.0 mm2/s. The Fischer-Tropsch derived base oil is useful in a flux oil for de-asphalted cylinder oil. The process oil composition of the present invention is suitable for use as a process oil component in pneumatic tyres.
摘要:
The present invention provides a system lubricating oil composition for a crosshead-type diesel engine, which can prevent fuel efficiency deterioration by suppressing the viscosity increase and comprises a mineral base oil and/or a synthetic base oil, (A) (a-1) a star polymer having a vinyl aromatic hydrocarbon structure in the molecule and/or (a-2) an ethylene-α-olefin copolymer or a hydrogenated compound thereof and having a base number of 4 to 20 mgKOH/g and a 100° C. kinematic viscosity of 7.5 to 15.0 mm2/s.
摘要:
There is provided a lubricating composition having a major amount of a lubricating oil having less than about 40% by weight alkylcycloparaffins and a minor amount of at least one diarylamine, and processes for making and using thereof.