An auxiliary lubricant comprising a composition, the comprising intermediate molecular weight surfactant-functionalized nanoparticles dispersed in a base oil.

A composition comprises the reaction product of a dithiophosphate derivative and an amine. The reaction product is present in the composition in an amount of at least about 25 wt. %. The composition may include additional components. A method of forming the composition comprises the step of combining the dithiophosphate derivative and the amine to form the composition. A method of increasing thermal stability of a dithiophosphate derivative comprises the step of combining the dithiophosphate derivative and an amine. The dithiophosphate derivative can decompose to form hydrogen sulfide (H2S). However, the amine substantially prevents thermal decomposition of the dithiophosphate derivative. An example of the dithiophosphate derivative is 3-(di-isobutoxy-thiophosphorylsulfanyl)-2-methyl-propanoic acid. An example of the amine is ditridecyl amine. The composition can be used for a variety of applications. For example, the composition can be used as an antiwear compound/additive in lubricants, metalworking fluids, hydraulic fluids, etc.

A composition comprises the reaction product of a dithiophosphate derivative and an amine. The reaction product is present in the composition in an amount of at least about 25 wt. %. The composition may include additional components. A method of forming the composition comprises the step of combining the dithiophosphate derivative and the amine to form the composition. A method of increasing thermal stability of a dithiophosphate derivative comprises the step of combining the dithiophosphate derivative and an amine. The dithiophosphate derivative can decompose to form hydrogen sulfide (H2S). However, the amine substantially prevents thermal decomposition of the dithiophosphate derivative. An example of the dithiophosphate derivative is 3-(di-isobutoxy-thiophosphorylsulfanyl)-2-methyl-propanoic acid. An example of the amine is ditridecyl amine. The composition can be used for a variety of applications. For example, the composition can be used as an antiwear compound/additive in lubricants, metalworking fluids, hydraulic fluids, etc.

A fuel composition, a lubricant composition, and methods for reducing friction or wear of moving parts. The fuel composition includes gasoline and from about 10 to about 500 ppm by weight of a dialkylaminoalkanol of the formula R.sup.1(R.sup.2)NCH.sub.2CH(R.sup.3)R.sup.4. The lubricant composition includes base oil of lubricating viscosity and from about 0.05 to about 5.0 weight percent of a dialkylaminoalkanol of the formula R.sup.1(R.sup.2)NCH.sub.2CH(R.sup.3)R.sup.4. In the above formulas wherein R.sup.1 is an alkyl group or a hydroxy alkyl group containing from 8 to 50 carbon atoms; R.sup.2 is an alkyl group containing from 1 to 4 carbon atoms; R.sup.3 is selected from H and OH; and R.sup.4 is selected from H, an alkyl group containing from 1 to 4 carbon atoms, and CH.sub.2OH and wherein at least one of R.sup.3 and R.sup.4 contains a hydroxyl group and provided that when R.sup.1 is a hydroxyalkyl group, R.sup.3 is OH and R.sup.4 is CH.sub.2OH.

This disclosure relates to a low viscosity lubricating turbine oil having a composition comprising a lubricating oil base stock, as a major component, and one or more lubricating oil additives, as minor components. The lubricating turbine oil has a kinematic viscosity of about 16 cSt to about 22 cSt at 40 C., a density of about 0.8 g/ml to about 0.9 g/ml, and an absolute evaporation loss at 150 C. of less than about 4%. This disclosure also relates to a method for improving energy efficiency in a turbomachine lubricated with the low viscosity lubricating turbine oil. This disclosure further relates to a method for improving energy efficiency while maintaining or improving deposit control and lubricating oil additive solvency in a turbomachine lubricated with the low viscosity lubricating turbine oil. This disclosure yet further relates to a method for improving solubility, compatibility and dispersancy of polar additives in the low viscosity lubricating turbine oil.

The present invention provides phosphorous-containing compounds useful as antiwear additive components, lubricant additive compositions and lubricant compositions each comprising such compounds, and methods for making and using the same.

An industrial oil composition contains a mineral or a synthetic oil as a base oil, and a neutral phosphite ester derivative represented by the following formula (B) and a 2,6-di-t-butylphenol derivative represented by the following formula (C) as antioxidants. In the formula (B), R.sup.b21 to R.sup.b24 each independently represent an aliphatic hydrocarbon group of 10 to 16 carbon atoms. In the formula (C), R.sup.c1 represents a straight-chain or a branched alkyl group of 1 to 12 carbon atoms. ##STR00001##

A process for applying a low coefficient of friction coating to interacting parts of a machine. The low coefficient coating is comprised of nanoparticles of a metal melting below about 400 C., preferably bismuth. A dispersion of the nanoparticles in a lubricant oil is introduced into the oil reservoir of the machine and the machine is operated at designed conditions.

A process for applying a low coefficient of friction coating to interacting parts of a mechanical device. The low coefficient coating is comprised of nanoparticles of a metal melting below about 400 C., preferably bismuth. Interacting parts of a mechanical device, prior to assembly of the mechanical device, are submerged in a dispersion of the nanoparticles, then heated to an effective temperature, then cooled, thereby resulting in a coating of the nanoparticles onto the interacting parts.

The invention relates to thiophosphates and derivatives thereof useful as antiwear additive components, lubricant additive compositions and lubricant compositions each comprising such compounds, methods for making and using the same, including methods of lubricating machines and machine parts and methods of extending the useful life of elastomeric seal components of such machines.