Abstract:
A nanolubricant composition is described where the lubricant composition includes a flowable oil or grease with nanoparticles dispersed in the flowable oil or grease. The nanoparticles are configured to polish a surface of a structure slowly over a period of time. The nanoparticles a hardness of at least about 7 Mohs and a diameter that is less than one half the arithmetic average roughness of the surface or a length that is less than one half of the arithmetic average roughness of the surface.
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:
Composition de graisse comprenant : (a) une ou plusieurs huiles de base minérales, synthétiques ou naturelles, (b) un épaississant, (c) au moins un lubrifiant solide constitué d'un ou plusieurs chalcogénures de métaux de transition à structure de fullerène inorganique, (d) un ou plusieurs additifs anti usure et/ ou extrême pression organophosphorés et/ou organo phospho soufrés. Utilisation d'une composition de graisse telle que définie ci-dessus dans les joints homocinétiques des transmissions de véhicules à moteur. Joint homocinétique contenant une graisse telle que définie ci-dessus.
Abstract:
An electric submersible motor is provided that includes a plurality of rotors and bearings mounted on a shaft, and a stator external to said rotors. A running clearance is located between an inner diameter of the stator and external diameter of the rotors, and includes a lubricating oil that includes a base hydrocarbon oil and a plurality of nanoparticles. Also provided is an improved lubricant oil and method of preparation thereof are provided. The lubricant oil includes a hydrocarbon containing base oil and a plurality of nanoparticles. The nanoparticles may be present in an amount up to 30% by volume.
Abstract:
A dialkylanilino-cyclohexane compound useful as an antioxidant has the following formula (I) or formula (I): wherein Ar 1 and Ar 2 can be the same or different and each is an alkylaromatic group; each of R 1 , R 2 , R 3 , and R 4 is independently selected from hydrogen or CR 7 R 8 ; each of R 5 , R 6 , and R 7 is independently selected from hydrogen and a substituted or unsubstituted C 1 to C 32 hydrocarbyl group; and each R 8 is independently selected from hydrogen and a C 1 to C 2 alkyl group, provided that when, each of R 1 and R 2 is CR 7 R 8 and each such R 8 is other than hydrogen, R 1 and R 2 may be joined to form a five or six-membered ring, and provided further that when, each of R 3 and R 4 is an adjacent CR 7 R 8 and each such R 8 is other than hydrogen, R 3 and R 4 may be joined to form a five or six-membered ring.
Abstract translation:可用作抗氧化剂的二烷基苯胺基 - 环己烷化合物具有下式(I)或式(I):其中Ar 1和Ar 2可以相同或不同,各自为烷基芳族基团; R 1,R 2,R 3和R 4各自独立地选自氢或CR 7 R 8; R5,R6和R7各自独立地选自氢和取代或未取代的C1至C32烃基; 并且每个R 8独立地选自氢和C 1至C 2烷基,条件是当R 1和R 2各自为CR 7 R 8且每个R 8不为氢时,R 1和R 2可以连接形成五或六元 并且进一步提供当R 3和R 4各自为相邻的CR 7 R 8且每个这样的R 8不是氢时,R 3和R 4可以连接形成五元或六元环。
Abstract:
The present invention provides a lubricating composition, at least comprising: - a base oil; - a metal sulphide or metal oxide, preferably a metal sulphide; and - an organosulphur compound. In a further aspect the present invention provides the use of the above lubricating composition for improving one or more of extreme pressure and anti-wear properties.
Abstract:
A solid stick composition for use on steel surfaces that are in sliding or rolling-sliding contact. The solid stick composition comprises a vinyl ester resin, for example, from about 20 to about 80 weight percent vinyl ester resin, a solid lubricant, for example from about 0 to about 80 weight percent lubricant, and optionally a friction modifier, for example from about 0 to about 40% weight percent friction modifier, or a combination of a solid lubricant and a friction modifier. The solid stick comprises at least one of the lubricant or the friction modifier. A method of controlling friction between a metal surface and a second metal surface by applying the solid stick composition to one or more than one of the metal surfaces is also disclosed as well as a method of reducing lateral force in a rail system comprising applying the solid stick composition onto a wheel or rail surface.
Abstract:
A grease composition comprising base oil, one or more urea thickeners, (A) in the range of from 0.1 to 5 weight% of tungsten disulphide and (B) in the range of from 0.1 to 5 weight% of one or more of zinc dithiophosphates and/or one or more molybdenum dialkyl dithiocarbamates, based on the total weight of the grease composition.