Abstract:
Additives comprising a salt or complex of tetrathiocarbonic acid are useful in lubricants to enhance both the extreme pressure/anti-wear and anti-oxidant capabilities thereof. The lubricants preferably are oils of lubricating viscosity, which may be thickened to grease-like consistency with one or more oil thickeners, and contain from about 0.1 to about 20 weight percent of said additives.
Abstract:
Additives containing a salt or complex of trithiocarbonic acid are useful in lubricants to enhance 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 contains from about 0.1 to about 20 weight percent of said additives.
Abstract:
A high performance ballistic grease is used in ammunition and a lubricating process to protect the barrel of a weapon from corrosion and overheating. The ballistic grease, ammunition, and process improve the structural integrity and accuracy of the weapon and are economical, nontoxic, effective, and safe. The preferred ballistic lubricating grease comprises a polyalphaolefin base oil, an amorphous silicon dioxide thickener, and a disodium octaborate tetrahydrate additive.
Abstract:
A radiation-resistant grease that is stable under elevated temperatures is disclosed. The grease is prepared by mixing a bentonite-based thickening agent with a base oil composed of m-(m-phenoxyphenoxy)diphenyl, pentaphenyl ether, a monoalkyltriphenyl ether or a monoalkyltetraphenyl ether (provided that the alkyl group contains 6-20 carbon atoms). To the mixture is added, if necessary, a gelling aid composed of an aliphatic alcohol, an aliphatic ketone and/or an aliphatic carbonate ester.
Abstract:
A light colored, open gear lubricating grease is formed from:a lubricating base oila clay thickenera combination of a polymer, preferably atactic polypropylene, and a particulate mineral, preferably zinc oxide, as tactifier and filler, andand alkali metal borate as EP additive.The ratio of polymer to mineral, may be from 1.5:1 to 1:1.5. An aromatic disulphide, preferably dibenzyl disulphide, may also be present as an EP additive and, if so, the wt. ratio of borate to disulphide may be from 5:1 to 7:1.
Abstract:
Polyolefin lubricant base oils can be surprisingly gelled by layer and chain type overtreated higher dialkyl dimethyl ammonium clays preferably containing a minimum of 12% excess of the quaternary ion moiety over their ion exchange capacity. For example, an overtreated dihydrogenated ditallow ammonium montmorillonite containing a 22% excess of the quaternary ion can be used to prepare a polydecene based grease although it does not gel mineral oil lubricants. In contrast, the known clay analog of equivalent treatment gels the mineral oil but not the synthetic polyolefin lubricant under comparable conditions.
Abstract:
Die Erfindung betrifft einen lebensmittelverträglichen Hochtemperaturschmierstoff, insbesondere ein Hochtemperaturöl und ein Hochtemperaturfett umfassend folgende Komponenten: a) mindestens ein Öl ausgewählt aus einem Trimellitsäureester oder einem Gemisch aus verschiedenen Trimellitsäureestern, Alkylaromaten, vorzugsweise ein aliphathisch substituiertes Naphthalin oder Estoliden; b) einem hydrierten oder vollhydrierten Polyisobutylens oder einer Mischung aus hydrierten oder vollhydrierten Polyisobutylen und; c) Additive einzeln oder in Kombination. Im Fall des Hochtemperaturfetts wird ein Verdickungsmittel zugegeben.
Abstract:
The object of the invention is a traction sheave elevator and a rope (3) that contains metal as a load-bearing material, such as the suspension rope of an elevator, which rope comprises at least one or more strands (7) laid from metal wires (9) and which rope (3) is lubricated with a lubricant (8). Another object is the use of the aforementioned lubricant for lubricating the rope (3). The lubricant (8) comprises at least oil and thickener, which thickener in the lubricant (8) comprises at least 10% or more of the mass of the lubricant (8).
Abstract:
The invention pertains to a method of forming a lubricating film on a surface, said method comprising applying to a surface a multiphasic composition comprising at least one (per) fluoropolyether (PFPE) lubricant, water and from 0.1 to 3 % by weight of water of at least one thickening agent, said multiphasic composition having a viscosity, when measured at 21 °C at a shear rate of 1 sec -1 of at least 10 Pa*S so as to form a layer, and drying said layer to form a lubricating film. By the use of the multiphasic composition as above detailed it is advantageously possible to convoy the PFPE lubricant to the surface to be lubricated using application techniques (doctor blade, metering rod,...) as those suitable for solid-like greases, while the actual conveyed lubricant behaves in lubrication as an oil, avoiding the use of fluorinated solvents.
Abstract:
Lubricating composition comprising fluorine oil and tricalcium phosphate. Preferably the tricalcium phosphate is used at from 1% to 40% by mass relative to the total composition. The lubricating composition of the present invention has excellent heat resistance, load resistance, fire resistance, and a long life at elevated temperatures, without using a fluororesin or the fluorine solvent to dissolve it.