摘要:
A lubricating oil composition is disclosed which comprises (a) a major amount of an oil of lubricating viscosity, (b) one or more phosphorus-containing anti-wear additives other than a zinc dithiophosphate, (c) one or more ashless dispersants, (d) one or more metal-containing detergents, and (e) one or more antioxidants, wherein the lubricating oil composition contains no more than about 0.03 weight percent of phosphorus, based on the total weight of the natural gas engine lubricating oil composition, and further wherein the lubricating oil composition is substantially free of any zinc compounds.
摘要:
An aqueous hydraulic fluid composition comprising (i) a salt of formic acid, and (ii) one or more lubricants such as a monovalent metal salt, ammonium, or amine salt of a dicarboxylic acid, is described in which the aqueous hydraulic fluid composition demonstrates increased thermal stability when exposed to elevated temperatures for a prolonged period of time while being able to tolerate the presence of 10% v/v synthetic seawater. The aqueous hydraulic fluid composition contains less than about 20% by weight (preferably none or substantially none) of an oil selected from the group consisting of mineral oils, synthetic hydrocarbon oils, and mixtures thereof. The hydraulic fluid preferably contains no glycols in some embodiments. The pH of the hydraulic fluid is preferably from 8 to 10 and is maintained by a buffer which preferably comprises borax in some embodiments.
摘要:
A lubricating oil composition for internal combustion engines which comprises a lube base oil and, incorporated therein, (A) 0.01 to 0.2 wt.% phosphoric triester represented by the general formula (1) in terms of phosphorus amount, (B) 0.01 to 0.3 wt.% succinimide and/or derivative thereof in terms of nitrogen amount, (C) 0.05 to 1 wt.% alkali metal or alkaline earth metal detergent in terms of metallic-element amount, and (D) 0.01 to 3 wt.% phenolic antioxidant and/or amine antioxidant. It is excellent in antiwear properties, retention of base number, high-temperature detergency, and low-friction characteristics. O=P(OR1)3 (1) (In the formula, R1 represents a C1-30 hydrocarbon group.)
摘要:
The present invention provides a hydraulic oil composition, which comprise a lubricating oil base oil having %C A of not more than 2, %C P /%C N of not less than 6 and an iodine value of not more than 2.5.
摘要翻译:本发明提供一种液压油组合物,其包含%C A为2以下,%C P /%C N以上且不大于2.5的润滑油基础油。
摘要:
The present invention provides a lubricating oil composition for machine tools and a lubricating oil composition which comprise a lubricating oil base oil having %C A of not more than 2, %C P /%C N of not less than 6 and an iodine value of not more than 2.5.
摘要:
The invention relates to water-based hydraulic fluids comprising a) water, b) at least one glycol, a polyglycol, or both, and c) 0.1 to 30 wt % of at least one compound of formula 1, where M is hydrogen, an alkali metal, an alkali earth metal, or ammonia, Ar 1 and Ar 2 are independently monocyclic or polycyclic aromatic groups that can have substituents or can comprise heteroatoms.
摘要:
Dargestellt und beschrieben wird eine wässrige Lösung enthaltend einen organischen Phosphorsäureester sowie eine wasserlösliche organische Schwefelverbindung und/oder eine organische Molybdänverbindung zur Herstellung eines Metallblechs oder Metallblechzuschnitts mit einer Beschichtung aus Schmierstoff, insbesondere einem Korrosionsschutzöl, Pre-Lube und/oder Dry-Lube, wobei das Metallblech oder der Metallblechzuschnitt eine Schicht umfasst, welche durch Aufbringen einer einen organischen Phosphorsäureester enthaltenden Lösung auf die metallische Oberfläche des Blechs gebildet ist. Derartig beschichtete Metallbleche weisen ausgezeichnete tribologische Eigenschaften auf.
摘要:
A substantially lead-free lubricant for use in hot forging of metals, especially forging of aluminum and aluminum alloy components. The lubricant comprises one or more oils, graphite, and one or more phosphorus-based additives. Additional additives, such as metallic lubricants and dispersants may also be included. The lubricant does not burn when subjected to temperatures in excess of 300° C.