Improved methods for producing colloidal dispersions of cerium-containing oxide nanoparticles in substantially non-polar solvents are disclosed. The cerium-containing oxide nanoparticles of an aqueous colloid are transferred to a substantially non-polar liquid comprising one or more amphiphilic materials, one or more low-polarity solvents, and, optionally, one or more glycol ether promoter materials. The transfer is achieved by mixing the aqueous and substantially non-polar materials, forming an emulsion, followed by a phase separation into a remnant polar solution phase and a substantially non-polar organic colloid phase. The organic colloid phase is then collected.

Improved methods for producing colloidal dispersions of cerium-containing oxide nanoparticles in substantially non-polar solvents are disclosed. The cerium-containing oxide nanoparticles of an aqueous colloid are transferred to a substantially non-polar liquid comprising one or more amphiphilic materials, one or more low-polarity solvents, and, optionally, one or more glycol ether promoter materials. The transfer is achieved by mixing the aqueous and substantially non-polar materials, forming an emulsion, followed by a phase separation into a remnant polar solution phase and a substantially non-polar organic colloid phase. The organic colloid phase is then collected.

The invention relates to a metallic fastener (10; 40) for the interference fit assembly of at least two structural elements (20, 22) comprising a through hole, the fastener comprising an enlarged head (12; 42), a shaft (14; 44) having an external diameter before installation that is greater than an internal diameter of the hole, said shaft comprising a conductive surface (26; 56). Before installation, at least the conductive surface (26; 56) is coated with a lubricating layer (30), which comprises a mixture of at least one polyolefin and one polytetrafluoroethylene, for example, having sufficient adherence to prevent its abrasion by manual manipulation of the fastener and being weak enough to be at least partly stripped from the conductive surface during the interference fit assembly of the fastener. The invention further relates to a method for obtaining such a fastener and to a method for installing such a fastener in a structure. The invention is applicable to the assembly of aircraft structures.

The invention relates to a metallic fastener (10; 40) for the interference fit assembly of at least two structural elements (20, 22) comprising a through hole, the fastener comprising an enlarged head (12; 42), a shaft (14; 44) having an external diameter before installation that is greater than an internal diameter of the hole, said shaft comprising a conductive surface (26; 56). Before installation, at least the conductive surface (26; 56) is coated with a lubricating layer (30), which comprises a mixture of at least one polyolefin and one polytetrafluoroethylene, for example, having sufficient adherence to prevent its abrasion by manual manipulation of the fastener and being weak enough to be at least partly stripped from the conductive surface during the interference fit assembly of the fastener. The invention further relates to a method for obtaining such a fastener and to a method for installing such a fastener in a structure. The invention is applicable to the assembly of aircraft structures.

The disclosed technology provides a lubricating composition comprising an oil of lubricating viscosity and 0.2 wt % to 10 wt % of a salt of a hydroxyl functional aromatic compound. The disclosed technology further relates to a method of lubricating a mechanical device with the lubricant composition.

The disclosed technology provides a lubricating composition comprising an oil of lubricating viscosity and 0.2 wt % to 10 wt % of a salt of a hydroxyl functional aromatic compound. The disclosed technology further relates to a method of lubricating a mechanical device with the lubricant composition.

A lubricant additive for introduction into a AC/R system to improve lubricant miscibility and performance in the AC/R system.

A lubricant additive for introduction into a AC/R system to improve lubricant miscibility and performance in the AC/R system.

A lubricant composition is disclosed. The lubricant composition provides lubrication between metal parts, is able to clean metal parts and prevent build-up of contaminants within the lubricant composition. The lubricant composition includes a plurality of heptane aliphatic hydrocarbons, a non-heptane aliphatic hydrocarbon, a naphthenic petroleum base oil, an octadecenoic acid, and an ethoxylated alcohol. The plurality of heptane aliphatic hydrocarbons may include one-third branched heptanes, one-third cyclic heptanes, and one-third linear n-heptane. The non-heptane aliphatic hydrocarbon may be any aliphatic hydrocarbon with fewer than six carbon atoms that are not linked in a ring formation. The octadecenoic acid in the lubricant composition is generally 9-octadecenoic acid.

A lubricant composition is disclosed. The lubricant composition provides lubrication between metal parts, is able to clean metal parts and prevent build-up of contaminants within the lubricant composition. The lubricant composition includes a plurality of heptane aliphatic hydrocarbons, a non-heptane aliphatic hydrocarbon, a naphthenic petroleum base oil, an octadecenoic acid, and an ethoxylated alcohol. The plurality of heptane aliphatic hydrocarbons may include one-third branched heptanes, one-third cyclic heptanes, and one-third linear n-heptane. The non-heptane aliphatic hydrocarbon may be any aliphatic hydrocarbon with fewer than six carbon atoms that are not linked in a ring formation. The octadecenoic acid in the lubricant composition is generally 9-octadecenoic acid.