A lubricant composition includes water, graphite, a thickener, and a polymeric dispersant comprising monomeric structural units derived from acrylic acid and monomeric structural units derived from 2-acrylamido-2-methylpropane sulfonic acid.

A lubricant composition includes water, graphite, a thickener, and a polymeric dispersant comprising monomeric structural units derived from acrylic acid and monomeric structural units derived from 2-acrylamido-2-methylpropane sulfonic acid.

The present disclosure provides a detergent additives and methods for preparing a sulfurized alkyl phenate product from polyalphaolefins.

The present disclosure provides a detergent additives and methods for preparing a sulfurized alkyl phenate product from polyalphaolefins.

A lubricating oil composition for an automotive vehicle with an electric motor and/or generator is provided. The lubricating oil composition includes: a. a major amount of an oil of lubricating viscosity having a kinematic viscosity at 100 C. in a range of about 1.5 mm.sup.2/s to about 20 mm.sup.2/s; b. an sulfur-based additive including a thiadiazole and a sulfurized polyolefin of formula (I):

##STR00001##

where R.sub.1 is hydrogen or methyl, and R.sub.2 is a C8-C40 hydrocarbyl group, the sulfur-based additive providing sulfur to the lubricating oil composition in an amount of 0.01 wt. % to 0.2 wt. %, based on the total weight of the lubricating oil composition; c. a phosphorus compound; and d. an ashless polyisobutenyl succinimide-based dispersant containing boron. The lubricating oil composition provides exceptional volume resistivity, detergency, thermal and oxidative stability, wear resistance, and corrosion resistance at high temperatures.

A lubricating oil composition for an automotive vehicle with an electric motor and/or generator is provided. The lubricating oil composition includes: a. a major amount of an oil of lubricating viscosity having a kinematic viscosity at 100 C. in a range of about 1.5 mm.sup.2/s to about 20 mm.sup.2/s; b. an sulfur-based additive including a thiadiazole and a sulfurized polyolefin of formula (I):

##STR00001##

where R.sub.1 is hydrogen or methyl, and R.sub.2 is a C8-C40 hydrocarbyl group, the sulfur-based additive providing sulfur to the lubricating oil composition in an amount of 0.01 wt. % to 0.2 wt. %, based on the total weight of the lubricating oil composition; c. a phosphorus compound; and d. an ashless polyisobutenyl succinimide-based dispersant containing boron. The lubricating oil composition provides exceptional volume resistivity, detergency, thermal and oxidative stability, wear resistance, and corrosion resistance at high temperatures.

A high-molecular-weight compound having a plurality of polymer chains linked through a divalent or higher-valent linking group, in which the divalent or higher-valent linking group has a thiol group and at least one of a thioether structure and a thiourethane structure, and a ratio of an absolute weight-average molecular weight to a relative weight-average molecular weight (absolute Mw/relative Mw) of the high-molecular-weight compound is 1.25 or more; and a method for producing the same are provided.

A high-molecular-weight compound having a plurality of polymer chains linked through a divalent or higher-valent linking group, in which the divalent or higher-valent linking group has a thiol group and at least one of a thioether structure and a thiourethane structure, and a ratio of an absolute weight-average molecular weight to a relative weight-average molecular weight (absolute Mw/relative Mw) of the high-molecular-weight compound is 1.25 or more; and a method for producing the same are provided.

A lubricating oil composition for an automotive vehicle with an electric motor and/or generator is provided. The lubricating oil composition includes: a. a major amount of an oil of lubricating viscosity having a kinematic viscosity at 100 C. in a range of about 1.5 mm.sup.2/s to about 20 mm.sup.2/s; b. an sulfur-based additive including a thiadiazole and a sulfurized polyolefin of formula (I): ##STR00001##
where R.sub.1 is hydrogen or methyl, and R.sub.2 is a C8-C40 hydrocarbyl group, the sulfur-based additive providing sulfur to the lubricating oil composition in an amount of 0.01 wt. % to 0.2 wt. %, based on the total weight of the lubricating oil composition; c. a phosphorus compound; and d. an ashless polyisobutenyl succinimide-based dispersant containing boron. The lubricating oil composition provides exceptional volume resistivity, detergency, thermal and oxidative stability, wear resistance, and corrosion resistance at high temperatures.

A lubricating oil composition for an automotive vehicle with an electric motor and/or generator is provided. The lubricating oil composition includes: a. a major amount of an oil of lubricating viscosity having a kinematic viscosity at 100 C. in a range of about 1.5 mm.sup.2/s to about 20 mm.sup.2/s; b. an sulfur-based additive including a thiadiazole and a sulfurized polyolefin of formula (I): ##STR00001##
where R.sub.1 is hydrogen or methyl, and R.sub.2 is a C8-C40 hydrocarbyl group, the sulfur-based additive providing sulfur to the lubricating oil composition in an amount of 0.01 wt. % to 0.2 wt. %, based on the total weight of the lubricating oil composition; c. a phosphorus compound; and d. an ashless polyisobutenyl succinimide-based dispersant containing boron. The lubricating oil composition provides exceptional volume resistivity, detergency, thermal and oxidative stability, wear resistance, and corrosion resistance at high temperatures.