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.

Abstract: Processes for working of refractory metals and other metals employing a lubricant comprising perfluorocarbon compounds (PFCs), including aliphatic perfluorocarbon compounds (&agr;-PFCs) having the general formula: CnF2n+2, perfluoromorpholines having the general formula: CnF2n+1ON, perfluoroamines (PFAs) and highly fluorinated amines (HFAs), and perfluoroethers (PFEs) and highly fluorinated ethers (HFEs), and their polymerization products.

Abstract: A rolling bearing has a grease filled therein. The grease contains a perfluoropolyether oil having a straight-chain structure having a dynamic viscosity of from 40 to 160 mm2/s, preferably from 40 to 100 mm2/s, at 40° C. as a base oil and a particulate fluororesin as a base oil, and a particulate polytetrafluoroethylene as a thickening agent.

Abstract: Disclosed is a machining fluid admixture for cooling and lubricating a workpiece/tool interface, wherein the admixture comprises a major amount of n-propyl bromide and a minor amount of a lubricant. In other embodiments, the machining fluid consists essentially of about 30.0 to about 99.99 weight percent n-propyl bromide; from about 0.01 to about 30.0 weight percent of a lubricant; and optionally from 0.0 to about 70.0 weight percent of a fluorinated chemical. In still further embodiments, the machining fluid consists essentially of about 45.0 to about 50.0 weight percent n-propyl bromide; from about 0.01 to about 2.0 weight percent of a lubricant; and from 45.0 to about 50.0 weight percent of a fluorinated chemical. In other aspects, the present invention is directed to methods for cooling and lubricating a tool/workpiece interface.

Abstract: Use as lubricants having a low friction coefficient and an improved noise reduction among moving mechanical parts of dispersions comprising a fluorinated oil and a (per)fluoropolymer, said compositions dilutable with water and obtainable by mixing:

Abstract: Aerosol compositions containing fluorinated oils are disclosed. At least one fluorinated component compatible with the fluorinated oil and a propellant are included in the aerosol composition. Fluorinated oil-containing non-aerosol compositions are also disclosed. In a particularly desirable form, the compositions are single-phase.

Abstract: A lubricant composition having excellent lubricity and comprising at least one compound selected among fluorine compounds each having a perfluoroalkyl or perfluoroether group and an alkyl or alkenyl group in the molecule and at least one compound selected among fluorine compounds each having a perfluoropolyether group in the molecule; and a magnetic recording medium excellent in running durability and still durability and comprising a nonmagnetic substrate (1) and, formed thereon in this order, a ferromagnetic thin metal film (2), a carbon film (3), and a lubricant layer (4), wherein the lubricant layer (4) contains the lubricant composition.

Abstract: In one aspect, this invention provides a fluid comprising one or more hydrofluoroether(s) and one or more lubricious additive(s) for the cutting and abrasive treatment of metal, cermet, or composite materials. In another aspect, the present invention provides a method of cutting and abrasively treating metal, cermet, or composite materials comprising applying to the metal, cermet, or composite workpiece and tool a fluid comprising a hydrofluoroether and a lubricious additive.

Abstract: A lubricating grease composition that is a mixture of (a) a hydrocarbon-based oil, (b) a perfluoro-polyalkyl ether oil of the formula A′—(O—CF2)v—(O—C2F4)w—(O—C3F6)x—(O—C4F8)y—(O—CF2CF(CF3))z—O—A″  in which A′ is —CF3, —C2F5, —C3F7, or —CF2T where T is H or Cl, A″ is A′ or —CF3, C2F5, —C3F7, or —CF2T, where T is H or Cl1 and v, w, x, y and z are whole numbers ≧0, (c) a dicarbamide as a thickening agent, (d) typical additives and (e) organic and inorganic solid lubricants. A process for the production of the lubricating grease composition is also provided.

Abstract: A refrigerator oil composition for use with an HFC refrigerant containing HFC-134a, HFC-125 or a mixture thereof, which comprises component (A) and component (B), said component (A) being 70 to 99% by weight of an alkylbenzene oil containing at least 60% by weight, based on the total weight of component (A), of alkylbenzenes having a molecular weight of 200 to 350 and said component (B) being 30 to 1% by weight of at least one synthetic oil containing oxygen selected from the group consisting of an ester, a polyalkylene glycol, an alkyl ether of the polyalkylene glycol, a modified compound of polyglycol, a ketone, a polyphenyl ether, a silicone, a polysiloxane and a perfluoro ether.

Abstract: Disclosed is a perfluoropolyether (PFPE) lubricant comprising less than about 10 percent PFPE molecules having a molecular weight lower than about 2000 Daltons, and wherein the average molecular weight of the lubricant is greater than about 5000 Daltons. Such a lubricant comprises less than about 15 percent PFPE molecules having a moleuclar weight greater than about 10,000 Daltons. Also disclosed is a thin film magnetic disc comprising a recording surface and a PFPE lubricant in contact with the recording surface. The recording surface of such a thin film magnetic disc can be adapted to magnetically record information via an air bearing read/write head. The recording surface can be smooth. The disc can further comprise a rough-surfaced landing zone inward of the recording surface, wherein the PFPE lubricant is in contact with the landing zone. Also disclosed is a method of lubricating a thin film magnetic disc.

Abstract: A water or aqueous soluble salt of a perfluoro polyether alcohol is applied to form a lubricant topcoat on a magnetic recording medium. Suitable soluble salts include the sodium salt of a perfluoro polyether diol.

Abstract: A lubricant containing a perfluoropolyether compound and a magnetic recording medium using the same are disclosed. When the lubricant is applied to a magnetic disk, the chain decomposition of perfluoropolyether ascribable to hydrofluoric acid is reduced. In addition, the generation of a highly viscous substance is reduced.

Abstract: In lubricant (5) of a magnetic recording medium made of conventional perfluoropolyether, one or more conductive high molecular compound is mixed. The conductive lubricant (5) prevents electric charge generated by frictional electricity from staying on the medium surface, and effectively prolongs the head-life by suppressing the break of the head element because of electric discharge between the disk medium and the head element. By employing the conductive lubricant, magnetic recording media and magnetic recording devices which are more reliable and durable can be realized.

Abstract: In one aspect, this invention provides a composition for the cutting and abrasive treatment of metals and ceramic materials comprising a hydrofluoroether. In another aspect, the present invention provides a method of cutting and abrasively treating metals and ceramic materials comprising applying to the metal or ceramic workpiece and tool a composition comprising a hydrofluoroether.

Abstract: The invention provides novel organic compounds, and more particularly those having excellent lubricity, compatible with lubricating organic compounds having a benzene ring and a phosphazine ring and retaining stability free of hydrolysis for a prolonged period of time. The organic compounds are represented by the formula R.sub.1 --R.sub.0 --R.sub.1 or R.sub.0 --R.sub.1. R.sub.0 is a chain saturated organic group containing a chain of carbon atoms or a chain of carbon atom C and oxygen atom O, and filled with fluorine atoms F or trifluoromethyl groups CF.sub.3 except at one end or both ends of the chain. R.sub.1 is --CH.sub.2 --O--(CH.sub.2).sub.p --{CH(CH.sub.3)}.sub.k --{C(CH.sub.3).sub.2 }.sub.t --R.sub.2 wherein p, k and t are each an integer of 0 or not smaller than 1, and R.sub.2 is phenyl or a functional group corresponding to phenyl in which at least one of the hydrogen atoms is substituted with a compound of at least two elements selected from the group consisting of C, H, O and F or with F, Br or Cl.

Abstract: Greases comprising a mineral and/or synthetic lubricating oil having an hydrogenated basis, a fluoropolyethereal oil and an organic or inorganic thickening agent, wherein the weight ratio lubricating oil+fluoropolyethereal oil/thickening agent ranges from 97:3 to 80:20 and the weight ratio lubricating oil/fluoropolyethereal oil ranges from 95:5 to 60:40.

Abstract: A poly-.alpha.-olefin:fluoroalkene diblock polymer useful as a lubricant and having a linking moiety of a heteroatom or a heteroatom-containing group linking a poly-.alpha.-olefin oligomeric unit with a fluoroalkene oligomeric unit and being miscible in hydrofluorocarbons or a mixture of hydrofluorocarbons, hydrochlorofluorocarbons, chlorofluorocarbons and the miscible composition useful as compressor fluids.

Abstract: The invention concerns a lubricant based on silicone oils or silicone greases and is characterized in that it comprises between 95 and 99 wt % silicone oil or silicone grease and between 1 and 5 wt % organic compounds from the group comprising trichloromethyl compounds having at least one oxygen atom in the sp.sup.3 configuration.

Abstract: A lubricant comprising a mixture of a perfluoropolyalkyl ether and a phosphazene is described. The lubricant is useful in thin-film magnetic recording disk applications, where very low static and dynamical coefficients of friction are desired and balling effects are minimized.

Abstract: Microemulsions substantially consisting of:an aqueous solution,a perfluoropolyether having perfluoroalkyl end groups,a hydrocarbon compound,a fluorinated surfactantand optionally also of a hydrogenated or fluorinated alcohol, said microemulsions being in the form of a limpid or opalescent liquid, macroscopically consisting of a single phase, stable in a certain temperature range. The dispersing phase (or continuous phase) in the microemulsion may consist of one of the three above said liquid components, wherefore the microemulsion may be of the oil-in-water or water-in-oil type.

Abstract: A lubricating composition containing about 0.1-10 weight percent of a perfluoropolyether lubricant containing perfluoropolyether molecules having at least one hydrogen-containing end group per molecule, and about 99.9-90 weight percent of a liquid, perfluorinated, nonaromatic cyclic organic solvent or mixture of such solvents is provided.

Abstract: The invention relates to a process for reducing the back migration of the most volatile fractions of perfluoropolyethers during the operation of mechanical vaccum-generating pumps which utilize perfluoropolyethers: use is made of perfluoropolyethers containing not more than 0.1% by weight of fractions having a molecular weight lower than or equal to 1,500 and not more than 1.3% by weight of fractions having a molecular weight lower than or equal to 1,800.