Abstract:
A lubricating oil composition for high-speed gears, particularly those having a peripheral speed of at least 10 m/sec, prepared by compounding a lube base oil having a percentage CA of 5 or less and desirably a nitrogen content of 50 ppm or less and a sulfur content of 50 ppm or less with additives based on, respectively, sulfur, phosphorus and nitrogen in such amounts that the element ratio, 100 N/(S+P), in the composition ranges from 4 to 10 by weight. The composition serves to develop satisfactory hypoid gear performance, is reduced in sludge formation, and can lengthen the service life of oil seal used in the high-speed and high-temperature rotating parts.
Abstract:
A water-in-oil emulsion is disclosed which comprises: (A) a continuous oil phase; (B) a discontinuous aqueous phase; (C) a minor emulsifying amount of at least one salt derived from (C)(I) at least one hydrocarbyl-substituted carboxylic acid or anhydride, or ester or amide derivative of said acid or anhydride, the hydrocarbyl substituent of (C)(I) having an average of from about 20 to about 500 carbon atoms, with (C)(II) ammonia, at least one alkali or alkaline earth metal, and/or at least one alkali or alkaline earth metal compound; and (D) a functional amount of at least one water-soluble, oil-insoluble functional additive dissolved in said aqueous phase.
Abstract:
A composition that includes solid lubricant nanoparticles and an organic medium is disclosed. Also disclosed are nanoparticles that include layered materials. A method of producing a nanoparticle by milling layered materials is provided. Also disclosed is a method of making a lubricant, the method including milling layered materials to form nanoparticles and incorporating the nanoparticles into a base to form a lubricant.
Abstract:
Die vorliegende Erfindung betrifft ein Mittel zur Herstellung einer Wasser-in-Öl-Emulsion, dadurch gekennzeichnet, dass es mindestens ein nichtionisches Tensid, mindestens eine membranbildende Substanz, sowie mindestens ein organisches oder anorganisches Metallsalz des Calciums, Magnesiums, Eisens, Mangans oder Cers umfasst, eine Wasser-in-Öl-Emulsion, welche ein solches Mittel enthält, ein Verfahren zur Hydrophilisierung organischer Öle sowie die Verwendung solcher Mittel zur Herstellung einer Wasser-in-Öl- Emulsion. Bevorzugte Verwendungen sind dabei die Hydrophilisierung von Schneidkühlmitteln auf organischer Basis, Zieh- und Stanzölen auf organischer Basis, Dieselkraftstoffen, Ottokraftstoffen, Schmierölen, Schwerölen, raffinierten Erdölfraktionen, nicht raffiniertem Erdöl und seinen Fraktionen.
Abstract:
The invention involves a composition for forming a combined conversion and lubricating coating on a metal substrate with which the composition is brought into contact. The composition comprises (a) an oxyethylated aliphatic alcohol whose aliphatic hydrocarbon moiety contains 18 or more carbon atoms and (b) dissolved phosphate anions. Preferably the composition also comprises inorganic boron, an alkali metal salt of a fatty acid, and an accelerator for phosphate coating.
Abstract:
Functional fluids comprising as a base oil at least one compound selected from the group consisting of a glycol, a glycol ether, an ester, a hydrocarbon, and mixtures thereof and as a multifunctional additive composition the mixture of a benzotriazole, a derivative thereof or mixtures thereof together with 1,2,4-triazole, a derivative thereof or mixtures thereof. The functional fluids exhibit increased resistance to corrosion and reduced sediment formation and are especially useful as brake fluids.
Abstract:
A metal working water or composition which has excellent cooling capability and lubricity and does not adversely affect the environment. Water containing at least one member selected from among a fluoride ion, a hydrogencarbonate ion and silicon, and a sodium ion and having a pH regulated to 6.0 to 10 is used as such as a metal working water. Alternatively, an additive, such as a rust preventive, is incorporated into the metal working water to prepare a composition which is then used as an alternative to a cutting oil.
Abstract:
Mucilages and mucilage extracts are disclosed that are effective as water-soluble, non-toxic, biodegradable, environmentally benign lubricants and/or coolants for a variety of industrial and machining purposes. One embodiment of the invention is a cooling and/or lubricating composition comprising sufficient amount of the mucilage to cool and/or lubricate a machining surface. Other embodiments further comprise a sufficient amount of a preservative to substantially inhibit degradation of the composition. Also encompassed within the scope of this invention are methods for making mucilage-comprising cooling and/or lubricating compositions, as well as concentrating and drying such compositions. Other aspects of this invention are methods for machining a surface, comprising extracting a mucilages, adding a sufficient amount of a preservative to substantially inhibit degradation of the mucilage to form a mucilage mixture, applying the mucilage mixture to a surface to be machined, and thereafter machining the surface. In another aspect, the invention provides methods for lubricating and/or cooling a machining surface comprising extracting a mucilage, adding a sufficient amount of a preservative to substantially inhibit degradation of the mucilage to form a mucilage mixture, and applying the mucilage mixture to the machining surface to act as a lubricant and/or coolant. A further aspect of this invention is the use of plant mucilage to coat the outer hull of watercraft, thereby reducing friction and drag, and increasing the speed of the craft. Optionally, such a composition may further comprise a cream wax.