Abstract:
PROBLEM TO BE SOLVED: To provide a compound exhibiting excellent vaporization resistance and capable of reducing spacing of a head and a disc, and to provide a lubricant and a magnetic disc using the same.SOLUTION: A compound represented by the formula (1) and a lubricant and a magnetic disc containing the compound are provided. (PN)-[R-R](1), where Ris -OCHCFO(CFCFO)(CFO)CFCHO-, -OCHCFCFO(CFCFCFO)CFCFCHO-, or -OCHCFCFCFO(CFCFCFCFO)CFCFCFCHO- and x, y are each a real number of 0 to 15, z is a real number of 1 to 15, n is a real number of 0 to 20 and Ris H, a hydroxyalkyl group, an amino group or an amide group.
Abstract:
Lubricating oil compositions, formulated to a preselected viscosity grade that demonstrate stay-in-grade capability in a diesel injector shear stability test, are provided. The compositions comprise a major amount of a base oil of lubricating viscosity and a minor amount of (i) a viscosity modifier (VM) or mixtures thereof having a low shear stability index (SSI) and (ii) a VM or mixtures thereof having an SSI greater than that of the VM from (i).
Abstract:
The disclosed technology provides lubricating composition comprising: an oil of lubricating viscosity, a p-dodecylphenol-free detergent and an oxyalkylated hydrocarbyl phenol, wherein the oxyalkylated hydrocarbyl phenol is substituted with at least one aliphatic hydrocarbyl group of 1 to 250 carbon atoms (or 20 to 220, or 30 to 150 carbon atoms), and wherein the oxyalkylated hydrocarbyl phenol is substantially free of aromatic hydrocarbyl groups. The disclosed technology further relates to a method of lubricating a mechanical device (such as an internal combustion engine) with the lubricating composition. The disclosed technology further relates to the use of the of the lubricating composition in a passenger car internal combustion engine to improve control of at least one of the following (i) fuel economy, (ii) corrosion, (iii) cleanliness, and (iv) bore wear.
Abstract:
The invention is a fluid having a kinematic viscosity from 3 to 6 mm 2 /s, a flash point of higher than 120°C and a pour point lower than -50°C, having a boiling point in the range of from 200 °C to 400°C and a boiling range below 80°C, said fluid comprising more than 95% isoparaffins and less than 3% of naphthens by weight, a biocarbon content of at least 95% by weight, containing less than 100ppm aromatics by weight. The invention is also a drilling fluid and the use of the fluid to improve the viscosity of the drilling fluid.
Abstract:
The disclosed technology provides lubricating composition comprising: an oil of lubricating viscosity, a p-dodecyl-phenol-free detergent and an oxyalkylated hydrocarbyl phenol, wherein the oxyalkylated hydrocarbyl phenol is substituted with at least one aliphatic hydrocarbyl group of 1 to 250 carbon atoms (or 20 to 220, or 30 to 150 carbon atoms), and wherein the oxyalkylated hydrocarbyl phenol is substantially free of aromatic hydrocarbyl groups. The disclosed technology further relates to a method of lubricating a mechanical device (such as an internal combustion engine) with the lubricating composition. The disclosed technology further relates to the use of the of the lubricating composition in a passenger car internal combustion engine to improve control of at least one of the following (i) fuel economy, (ii) corrosion, (iii) cleanliness, and (iv) bore wear.
Abstract:
Lubricating oil compositions, formulated to a preselected viscosity grade that demonstrate stay-in-grade capability in a diesel injector shear stability test, are provided. The compositions comprise a major amount of a base oil of lubricating viscosity and a minor amount of (i) a viscosity modifier (VM) or mixtures thereof having a low shear stability index (SSI) and (ii) a VM or mixtures thereof having an SSI greater than that of the VM from (i).