Abstract:
Lubricant compositions as well as methods and articles utilizing the lubricant compositions that comprise a polyoxyalkene as a lubricating agent, between 4 wt. % and 7.5 wt. % of silica as a thickening agent and an inorganic thixotropic-enhancing metal compound added in an amount of, for example, at least 20 ppm, by weight or alternatively, between 1 ppm and 2 wt. %. The silica may be fumed silica. Examples of the metal compound include KOH, NaOH, KCl, CaCl2, MgCl2, CaO, MgO, Mg(OH)2 or combinations thereof. A tire is also included, comprising a radially inner face designed to be opposite a wheel rim on which it is designed to be mounted, wherein the radially inner face is provided with the lubricant composition described above.
Abstract:
A lubricant composition for lubricating an interface between an inner surface of a tire and a safety support ring in a run-flat tire system that includes a lubricating agent selected from glycerol, polyalkylene glycol or combinations thereof and a thixotropic agent. The thixotropic agent is an organoclay comprising a mineral clay mixture treated with an alkyl quaternary ammonium salt, wherein the mineral clay mixture comprises at least one of sepiolite, palygorskite and a smectite and wherein a combined amount of palygorskite and sepiolite in the mineral clay mixture is between about 50 wt. % and about 100 wt. % with a balance of the mineral clay mixture being essentially the smectite. The lubricating agent may also be selected from a copolymer that is a mixture of alkylene oxides, preferably a mixture of ethylene oxide and propylene oxide.
Abstract:
An anti-seize composition includes lubricating solids and at least one of a material selected from a grease and an oil. The lubricating solids include at least 15 weight percent of nano-sized lubricating solid particles. The nano-sized lubricating solid particles each have at least one dimension, on average, of less than 500 nm.
Abstract:
The present invention relates to a lubricating composition containing an alkali metal borate. The invention further provides for a method of lubricating a device with grease or a metalworking fluid by employing the lubricating composition containing the alkali metal borate.
Abstract:
Fluorinated lubricants of formula: T-O[A-B]z-[A-B′]z′-A-T′ (I)wherein: A=—(X)a—O-A′-(X′)b wherein A′ is a perfluoropolyether chain comprising units (CF2O), (CF2CF2O), (CF2CF2CF2O), (CF2CF2CF2CF2O); X, X′═—CF2—, —CF2CF2—; a, b=0 or 1; B derives from olefins, of which at least one homopolymerizable by radical route, of formula: —[(CR1R2—CR3R4)j(CR5R6—CR7R8)j′]— (Ia) wherein j=1-5, j′=0-4 and 2
Abstract:
The present invention discloses a nanodiamond thermal grease, which comprises a nanodiamond powder, a thermal powder and a substrate. The nanodiamond powder has volume percentage of 5% to 30%, the thermal powder has volume percentage of 40% to 90%, and the substrate has volume percentage of 5% to 30%. The nanodiamond powder and the thermal powder are distributed uniformly in the substrate to form the nanodiamond thermal grease having high thermal conductivity.
Abstract:
A syringe coated with a lubricant containing a silicone oil and a fine silica powder on the inner surface of the barrel of the syringe can be used for injection of a surface-active drug solution without oil droplet formation on the inner surface while preventing an increase of the gasket sliding friction.
Abstract:
The invention provides a grease composition comprising a base oil consisting of a fluorinated oil and an antirust agent, wherein said antirust agent comprises an aliphatic dibasic acid salt of the formula (1) in an amount of not less than 0.1% by mass and less than 1.0% by mass based on the total mass of the grease composition; (CH2)n(COO)2Mm (1) wherein n is an integer of 1 to 19, M is an alkali or alkaline earth metal, m is 2 when M is an alkali metal and m is 1 when M is an alkaline earth metal, and a bearing wherein the grease is packed. The grease exerts less effects on the environment. It is low in evaporation loss at a high temperature, shows good antirust property and can be suitably used in a ball bearing operated at a high temperature.
Abstract:
A grease composition using lubricating base oil that is biodegradable by microorganisms in nature and has an affinity to the human body is provided. More particularly, a distillation residue secondarily generated in production of biodiesel from vegetable oil (soybean oil and canola oil) is used as the lubricating base oil.The grease composition is produced by adding 1 to 20 wt % of additives to 100 to 95 wt % of distillation residues, which is generated in production of biodiesel, and 1 to 30 wt % of thickeners.
Abstract:
A method for making a lubricating fast-setting epoxy compound comprising: mixing under vacuum dispersion a first micro-crystalline filler, a first talc, and a titanium oxide into a hardenable epoxide containing liquid forming an epoxy base. A second micro-crystalline filler, a second talc, and a hydrocarbon resin are mixed forming an accelerator mixture. A methylamino accelerator is mixed into the accelerator mixture forming an epoxy accelerator. Substantially equal amounts of the epoxy base and the epoxy accelerator are mixed to form the lubricating fast-setting epoxy compound having a high lubricity and a curing time ranging from two minutes to twelve minutes. Adjusting the mixing speed and temperature of the epoxy base, the accelerator mixture, and the epoxy accelerator is contemplated to promote homogeneity. The epoxy base can also include a flatting agent. The epoxy accelerator can also include a modified aliphatic amine, an acrylic resin, a coloring agent, or combinations thereof.