Abstract:
A grease composition is produced by mixing a thickener comprising a fluoro resin and a second thickener component (a metallic soap, a complex metallic soap, an N-substituted terephthalamic acid metal salt, organic bentonite or a calcium sulfonate complex) into a base oil. This grease composition is excellent in heat resistance, load carring capacity, water resistance, rust protection, lubricating life and the like. A rolling apparatus filled with the above grease composition has excellent lubricating ability and is long-lived under high-temperature conditions. Moreover, a grease composition is produced by mixing a thickener comprising a fluoro resin and carbon black as a second thickener component into abase oil. This grease composition is excellent in heat resistance, water resistance, rust protection, lubricating life, electric conductivity and the like. A rolling apparatus filled with the above grease composition has excellent electric conductivity and is long-lived under high-temperature conditions.
Abstract:
This invention is to provide a conductive grease which is less to decrease conductivity as a time passes. The conductive grease comprises a base oil, a thickener, a conductive solid powder, and at least one kind of a wear inhibitor, an extreme pressure agent and an oiliness agent, wherein an amount of the conductive solid powder added is 0.1 to 10 wt %, and an amount of the at least one kind of a wear inhibitor, an extreme pressure agent and an oiliness agent added is 0.1 to 10 wt %. Further, the conductive grease comprises the base oil and at least one of conductive additives, and the conductive additives are fibrous carbon, metallic particle, metallic compound particle and carbon nano-tube. The conductive grease to be packed into the rolling bearing comprises conductive fine particles such as carbon black and has an oil separation degree of 2% or lower. A ball bearing to be favorably used at high temperature comprises an inner race and an outer race, and a plurality of balls freely rotating between both races, and the conductive grease packed into a space defined between both races and holding the plural balls therein, and the conductive grease comprises the base oil, a thickener comprising fluorine compound or silicone compound and 0.2 to 10 wt % of the carbon black.
Abstract:
This invention is to provide a conductive grease which is less to decrease conductivity as a time passes. The conductive grease comprises abase oil, a thickener, a conductive solid powder, and at least one kind of a wear inhibitor, an extreme pressure agent and an oiliness agent, wherein an amount of the conductive solid powder added is 0.1 to 10 wt %, and an amount of the at least one kind of a wear inhibitor, an extreme pressure agent and an oiliness agent added is 0.1 to 10 wt %. Further, the conductive grease comprises the base oil and at least one of conductive additives, and the conductive additives are fibrous carbon, metallic particle, metallic compound particle and carbon nano-tube. The conductive grease to be packed into the rolling bearing comprises conductive fine particles such as carbon black and has an oil separation degree of 2% or lower. A ball bearing to be favorably used at high temperature comprises an inner race and an outer race, and a plurality of balls freely rotating between both races, and the conductive grease packed into a space defined between both races and holding the plural balls therein, and the conductive grease comprises the base oil, a thickener comprising fluorine compound or silicone compound and 0.2 to 10 wt % of the carbon black.
Abstract:
Encapsulating particles of solid thiocarbonate salts, esters and complexes with air- and water-impermiable coatings produces compositions having long-term stability.
Abstract:
A composition which comprises (a) a salt of monovalent metal (M) of a carboxylic acid in which the COOH group is attached to a ring atom of a fused ring system and (b) a grease which is a non-soap thickened oil which may be a mineral oil or a synthetic oil such as a silicone oil. The metal (M) may be sodium. The fused ring system is preferably a fused aromatic hydrocarbon ring system such as naphthalene and may include further substituents, for example an -OH group, in addition to the COOH group. If the acid contains both OH and COOH groups, these can be attached to adjacent atoms of the fused ring system. Sodium 2-naphthoate and sodium 3-hydroxy-2-naphthoate have been found to be particularly suitable. The grease has improved corrosion resistance and the addition of the metal compound does not result in destructing of the grease.
Abstract:
Additives comprising an adduct of a calcium salt of a thiocarbonic acid and calcium hydroxide are useful in lubricants to enhance both the extreme pressure/anti-wear and anti-oxidation capabilities thereof. The lubricants are preferably oils of lubricating viscosity, which may be thickened to a grease-like consistency with one or more oil thickeners and contain from about 0.1 to about 20 weight percent of said adduct.
Abstract:
A feeding lubricant for use on a welding electrode comprises about 10 to 40 wt.% of at least one soap-based lubricant, about 40 to 90 wt.% of at least one solid particulate lubricant selected from MoS 2 , WS 2 , ZnO, graphite and PTFE and up to 20 wt.% of at least one optional additional particulate lubricant ingredient.
Abstract:
Die Erfindung betrifft die Verwendung von ionischen Flüssigkeiten zur Herstellung von wasserbeständigen Schmierfettzusammensetzungen, die in einem Temperaturbereich von mindestens -30°C bis mindestens 180°C gesetzt werden und gute Korrosionsschutzeigenschaften aufweisen.
Abstract:
A thermally conductive silicone grease composition comprising at least the following components: an organopolysiloxane (A) represented by the following general formula : [wherein R 1 designates identical or different univalent hydrocarbon groups; X designates identical or different univalent hydrocarbon groups or alkoxysilyl-containing groups of the following general formula: -R 2 -SiR 1 a (OR 3 ) (3-a) (wherein R 1 designates the previously mentioned groups; R 2 designates oxygen atoms or alkylene groups; R 3 designates alkyl groups; and 'a' is an integer ranging from 0 to 2); and 'm' and 'n' are integers equal to or greater than 0, respectively]; a thermally conductive filler (B); and an organopolysiloxane (C) having silicon-bonded hydrogen atoms on both molecular terminals and in the molecular chains; is characterized by excellent resistance to heat and reduced oil bleeding.
Abstract:
A grease composition which exhibits a long lifetime even when used in high-temperature atmosphere and excellently low evaporation and which is noncombustible, namely, a grease composition which comprises as the base oil an ionic fluid composed of a cation and an anion and having an ion concentration of 1 mol/dm 3 or above as determined at 20°C and which contains a thickening agent having a dropping point of 260°C or above.