Abstract:
A composition is disclosed which comprises an aryl perfluoropolyether, optionally a halogenated oil, and further optionally a thickening agent. The composition can be used as a lubricant itself or as an additive to an oil or grease lubricant and can withstand temperatures higher than 300° C. without decomposition. The halogenated oil can be a perfluoropolyether, a fluorosilicone, a polytrifluorochloroethylene, or combinations of two or more thereof. The thickening agent can be finely divided silica, boron nitride, clay, soap, poly(tetrafluoroethylene), clay, talc, silica, titanium dioxide, polydimethylsiloxane, polyurea, polyurethane, or combinations of two or more thereof.
Abstract:
Methods of lubricating food processing equipment that include applying a food grade, high temperature lubricant composition to the food processing equipment are described. The composition includes a polyol polyester base oil that is a reaction product of at least one neopentyl polyhydric alcohol and at least one monocarboxylic acid. Also described are methods of preparing a food grade, high temperature composition comprising reacting at least one neopentyl polyhydric alcohol and at least one monocarboxylic acid. The composition may be a lubricant composition. Additionally, the invention provides a food grade, high temperature lubricant composition comprising a polyol polyester base oil that is a reaction product of at least one neopentyl polyhydric alcohol and at least one monocarboxylic acid.
Abstract:
A perfluoropolyether, a composition comprising the perfluoropolyether, a process for producing the perfluoropolyether, and a process for improving the thermostability of grease or lubricant are provided. The perfluoropolyether comprises perfluoroalkyl radical end groups in which the radical has at least 3 carbon atoms per radical and is substantially free of perfluoromethyl and perfluoroethyl end groups. The process for producing the perfluoropolyether can comprise (1) contacting a perfluoro acid halide, a C2- to C4-substituted ethyl epoxide, or a C3+ fluoroketone with a metal halide to produce an alkoxide; (2) contacting the alkoxide with either hexafluoropropylene oxide or tetrafluorooxetane to produce a second acid halide; (3) esterifying the second acid halide to an ester; (4) reducing the ester to its corresponding alcohol; (5) converting the alcohol with a base to a salt form; (6) contacting the salt form with a C3 or higher olefin to produce a fluoropolyether; and (7) fluorinating the fluoropolyether. The process for improving the thermostability of a grease or lubricant comprises combining the grease or lubricant with the composition.
Abstract:
The present invention relates to a method of lubricating the interface between a supporting ring and inner surface of a tire for use with a rim for a tire having two beads, comprising the step of providing a lubricant on a surface of said supporting ring, said lubricant comprising at least 60 percent by weight of polydimethylsiloxane, from about 7 to about 13 weight percent of amorphous silica, and from about 7 to about 13 weight percent of hydroxy-terminated dimethyl siloxane.
Abstract:
Disclosed is a lubricating composition such as a lubricant, a lubricating grease, or a rust preventive oil for use in a torque limiter and a ball-and-roller bearing; the lubricating composition having chemical attack resistance for a synthetic resin molded product. The lubricating composition comprises as a base oil at least one synthetic saturated hydrocarbon oil selected from the group consisting of a poly-&agr;-olefin, and an ethylene-&agr;-olefin copolymer. When a phosphoric acid ester is used as a compounding agent, or at lease one lubricating grease selected from the group consisting of an urea compound, silica powder, and bentonite powder is mixed therein, the lubricating composition is a rust preventive oil using a metal salt of sulfonic acid and the like. The lubricating composition is suitably used for machine parts of a business machine including the synthetic resin molded product.
Abstract:
Disclosed is a lubricating composition such as a lubricant, a lubricating grease, or a rust preventive oil for use in a torque limiter and a ball-and-roller bearing; the lubricating composition having chemical attack resistance for a synthetic resin molded product. The lubricating composition comprises as a base oil at least one synthetic saturated hydrocarbon oil selected from the group consisting of a poly-null-olefin, and an ethylene-null-olefin copolymer. When a phosphoric acid ester is used as a compounding agent, or at lease one lubricating grease selected from the group consisting of an urea compound, silica powder, and bentonite powder is mixed therein, the lubricating composition is a rust preventive oil using a metal salt of sulfonic acid and the like. The lubricating composition is suitably used for machine parts of a business machine including the synthetic resin molded product.
Abstract:
A coating composition for producing an article is disclosed. The coating composition includes a blend of a polymer resin and a lubricating oil, wherein the coating composition is in a liquid-phase By using the coating composition, it is possible to produce the article which can be used in various industries, only with a simple process of molding and curing a polymer resin by the technique of the prior art.
Abstract:
A lubricating formulation prepared from a blend of components comprised of 35-55% of a first base oil; 30-50% of a second base oil; 0.5-5% of a hydrophobic fumed silica; and 1-10% of a hydrophilic fumed silica, wherein the hydrophobic fumed silica and the hydrophilic fumed silica are introduced during formulation so that the hydrophobic famed silica and the hydrophilic fumed silica are pulverized, discharged and dissolved under a surface the blend during formulation.
Abstract:
The invention provides a grease composition capable of smoothly operating the lubricated parts even under wide-ranging temperature conditions, and at the same time, exhibiting excellent noise reducing effect on the lubricated parts. The grease composition containing a base oil and a thickener is provided, wherein the base oil includes at least one first base oil selected from the group consisting of poly-α-olefins and ethylene-α-olefin oligomers and at least one second base oil selected from the group consisting of polybutene, polyisobutylene, polymethacrylate, and styrene based copolymers, with the first base oil being contained in an amount of 65 mass % or more and the second base oil being contained in an amount of 1 mass % or more and less than 35 mass % based on the total mass of the base oil, the base oil having a kinematic viscosity of 350 to 1400 mm2/s at 40° C., the first base oil having a kinematic viscosity of 300 to 1200 mm2/s at 40° C., and the second base oil having a kinematic viscosity of 1500 to 200,000 mm2/s at 40° C.
Abstract:
The invention relates to a high-temperature grease which is used inter alia in corrugated cardboard plants and comprises exclusively fluorine-free base oil.