C10M139/06

LUBRICATING OIL COMPOSITIONS AND USE THEREOF FOR IMPROVING JOURNAL BEARING DURABILITY IN INTERNAL COMBUSTION ENGINES

This invention relates to a lubricating oil composition comprising or resulting from the admixing of: (i) a base oil; (ii) one or more overbased metal based detergents; and (3) a friction modifier comprising glycerol monooleate, glycerol dioleate, glycerol trioleate or combinations thereof at from 0.2 to 1.0 wt. % of the composition. The composition has a total sulfated ash of less than or equal to 1.0 wt. %, a high temperature high shear viscosity at 150 C. (HTHS) as determined according to ASTM D4683-20 of greater than or equal to 1.8 mPa.Math.s and less than or equal to 2.9 mPa.Math.s, and a total phosphorous level of less than or equal to 0.080 wt. %. The inventive composition provides a 10% to 80% decrease in journal bearing wear as measured by wear scar volume in m.sup.3 using the MTM-R test method compared to a lubricating oil composition of comparable HTHS, but not including a friction modifier comprising glycerol monooleate, glycerol dioleate, glycerol trioleate or combinations thereof. Also provided are a method of decreasing journal bearing wear in an internal combustion engine and a method of making the lubricating oil composition.

LUBRICATING OIL COMPOSITIONS AND USE THEREOF FOR IMPROVING JOURNAL BEARING DURABILITY IN INTERNAL COMBUSTION ENGINES

This invention relates to a lubricating oil composition comprising or resulting from the admixing of: (i) a base oil; (ii) one or more overbased metal based detergents; and (3) a friction modifier comprising glycerol monooleate, glycerol dioleate, glycerol trioleate or combinations thereof at from 0.2 to 1.0 wt. % of the composition. The composition has a total sulfated ash of less than or equal to 1.0 wt. %, a high temperature high shear viscosity at 150 C. (HTHS) as determined according to ASTM D4683-20 of greater than or equal to 1.8 mPa.Math.s and less than or equal to 2.9 mPa.Math.s, and a total phosphorous level of less than or equal to 0.080 wt. %. The inventive composition provides a 10% to 80% decrease in journal bearing wear as measured by wear scar volume in m.sup.3 using the MTM-R test method compared to a lubricating oil composition of comparable HTHS, but not including a friction modifier comprising glycerol monooleate, glycerol dioleate, glycerol trioleate or combinations thereof. Also provided are a method of decreasing journal bearing wear in an internal combustion engine and a method of making the lubricating oil composition.

Rapid Cure Silicone Lubricious Coatings
20170028391 · 2017-02-02 · ·

Novel, lubricious coatings for medical devices are disclosed. The coatings provide improved lubricity and durability, and are readily applied in coating processes. The present invention is also directed to a novel platinum catalyst for use in such coatings. The catalyst provides for rapid curing, while inhibiting cross-linking at ambient temperatures, thereby improving the production pot life of the coatings.

Redox couple-based mitigation of fluid-flow-driven electrochemical surface degradation
09546338 · 2017-01-17 · ·

The present disclosure relates to methods, systems, hydraulic fluids and additives for reducing the rate of surface current degradation for components in a hydraulic system, wherein the hydraulic system is exposed to phosphate-ester-based hydraulic fluid.

Redox couple-based mitigation of fluid-flow-driven electrochemical surface degradation
09546338 · 2017-01-17 · ·

The present disclosure relates to methods, systems, hydraulic fluids and additives for reducing the rate of surface current degradation for components in a hydraulic system, wherein the hydraulic system is exposed to phosphate-ester-based hydraulic fluid.

Multifunctional molybdenum containing compounds, method of making and using, and lubricating oil compositions containing same

Disclosed is a lubricating oil composition comprising the reaction product of a nitrogen containing reactant wherein the nitrogen containing reactant comprises an alkyl di-alkanolamide, an alkyl di-alkanolamine, or mixtures thereof; an acidic molybdenum compound; and a salicylate compound. Also disclosed is a method for operating an internal combustion engine comprising said lubricating composition and a method for preparing a molybdenum containing friction modifier.

Lubricating oil composition, diesel engine with mounted supercharger, and use method for lubricating oil composition
12570921 · 2026-03-10 · ·

A lubricating oil composition may include a base oil (A), succinimide (B) which has not been modified with boron, succinimide (C) modified with boron, a metallic detergent (D), and an antioxidant (E), wherein the ratio of the content of boron atoms derived from ingredient (C) to the content of nitrogen atoms derived from ingredients (B) and (C), B/N, is 0.30 or less by mass, the lubricating oil composition satisfying requirement (I) and/or requirement (II). Requirement (I): Ingredient (D) includes a metallic detergent (D1) having a base value less than 100 mgKOH/g. Requirement (II): Ingredient (E) includes an amine-based antioxidant (E1), the content of ingredient (E1) being 1.00 mass % or less.

Lubricating oil composition, diesel engine with mounted supercharger, and use method for lubricating oil composition
12570921 · 2026-03-10 · ·

A lubricating oil composition may include a base oil (A), succinimide (B) which has not been modified with boron, succinimide (C) modified with boron, a metallic detergent (D), and an antioxidant (E), wherein the ratio of the content of boron atoms derived from ingredient (C) to the content of nitrogen atoms derived from ingredients (B) and (C), B/N, is 0.30 or less by mass, the lubricating oil composition satisfying requirement (I) and/or requirement (II). Requirement (I): Ingredient (D) includes a metallic detergent (D1) having a base value less than 100 mgKOH/g. Requirement (II): Ingredient (E) includes an amine-based antioxidant (E1), the content of ingredient (E1) being 1.00 mass % or less.