An environmentally acceptable lubricating grease, comprising: a) 50 wt % to 90 wt % of a biodegradable base oil comprising a biodegradable ester as base oil; b) 3 wt % to 25 wt % of a thickener selected from b1) 3 wt % to 12 wt % biodegradable calcium soap, b2) 3 wt % to 25 wt % bentonites, b3) and mixtures thereof; c) 4 wt % to 40 wt % additives, comprising c1) 1 wt % to 12 wt % fumed silicon dioxide and/or polytetrafluoroethylene and/or mixtures thereof, c2) 2 wt % to 45 wt % of a polymer selected from polyisobutylene, polyisobutylene/butene copolymer, polymethacrylates, polyesters and mixtures thereof, c3) 0.5 wt % to 20 wt % of a solid lubricant.

A grease base oil, containing: condensation esters of alcohols (A) and carboxylic acids (B), wherein the alcohols (A) include a polyhydric alcohol represented by General Formula (1), the carboxylic acids (B) include a fatty acid having 5 to 9 carbon atoms (B-1), a branched fatty acid having 15 to 20 carbon atoms (B-2), a cycloalkane monocarboxylic acid having 4 to 8 carbon atoms (B-3), and an aromatic carboxylic acid (B-4), and the carboxylic acids (B) have a percentage of (B-1) above of 30 mol % to 50 mol %, a percentage of (B-2) above of 30 mol % to 50 mol %, a percentage of (B-3) above of 10 mol % to 30 mol %, and a percentage of (B-4) above of 1 mol % to 15 mol %. The grease base oil contains condensation esters having heat resistance and low temperature storageability.

A silicone grease composition having high friction characteristics and wear characteristics is disclosed. The silicone grease composition is provided by adding a zinc salt (B) containing, at a mass ratio from 1:99 to 99:1, a zinc dialkyldithiophosphate (B1) and a zinc dialkyldithiocarbamate (B2) as an extreme-pressure additive to a silicone oil (A). A method for transmitting torque of a clutch or a torque limiter mechanism is also disclosed.

A lubricating grease composition containing a base oil having a kinematic viscosity of 10 mm.sup.2/s or more and 60 mm.sup.2/s or less at 40° C.; a thickener containing at least one soap selected from a metal soap and a metal complex soap; and a solid lubricant containing porous polyamide particles. An amount of the porous polyamide particles blended is 1% by mass or more and 20% by mass or less based on a total mass of the lubricating grease composition.

A lubricant additive may be synthesized by forming a nanohybrid of a transition metal dichalcogenide and a metal borate, forming a base oil, and then dispersing the transition metal dichalcogenide into the base oil. An exemplary nanohybrid may be synthesized by forming a first solution by adding a borax solution to an aqueous solution of a metal source, forming a second solution by adding ethanol to the first solution, forming a mixture by mixing the transition metal dichalcogenide with the second solution, and heating the mixture at a temperature of 180° C. to 230° C. and a pressure of 5 to 20 bar under a nitrogen atmosphere.

The present disclosure provides a soap thickener and methods of making the same. The soap thickener includes a metal soap of a carboxylic acid composition in a base oil, wherein the carboxylic acid composition includes a modified fatty acid composition prepared by performing a pericyclic reaction between an unsaturated small molecule and a fatty acid mixture. The present disclosure further provides lubricating compositions that include the soap thickener of the present disclosure and methods of preparing the same.

This disclosure relates to a lubricant powder composition that is made from a combination of wax, grease thickener, and additives. The lubricant powder composition exhibits low frictional, and improved mechanical stability in high temperature environments. This disclosure further relates to the use of a lubricant powder composition in a mechanical component.

The present disclosure relates to a lubricant composition including a base oil, a thickener and a thickener supplement, and a method of manufacturing the same. The lubricant composition of the present disclosure is effective at improving performance at high-temperature by maintaining the evaporation amount and friction characteristics even at high temperatures, thus inhibiting oil contamination of powertrain parts and the like and maintaining sticking phenomenon even in a high-temperature environment, thereby increasing the durability of parts.

A process for converting a molten polymeric material is provided. The process includes effecting disposition of a molten polymeric material, having at least one carbon-carbon double bond, in sufficient proximity to a catalyst material within a reaction zone, to affect a reactive process that effects generation of a reaction product. The reactive process effects cleaving of at least one carbon-carbon double bond. The catalyst material includes [Fe—Cu—Mo—P]/Al.sub.2O.sub.3 prepared by binding a ferrous-copper complex to an alumina support to generate an intermediate material and reacting the intermediate material with a heteropolyacid.

Methods of lubricating food processing equipment that include applying a food grade, high temperature lubricant composition to the food processing equipment are described. The composition includes a polyol polyester base oil that is a reaction product of at least one neopentyl polyhydric alcohol and at least one monocarboxylic acid. Also described are methods of preparing a food grade, high temperature composition comprising reacting at least one neopentyl polyhydric alcohol and at least one monocarboxylic acid. The composition may be a lubricant composition. Additionally, the invention provides a food grade, high temperature lubricant composition comprising a polyol polyester base oil that is a reaction product of at least one neopentyl polyhydric alcohol and at least one monocarboxylic acid.