Abstract:
The invention relates to the use of ionic fluids for the production of water-resistant lubricating grease compositions, which are employed in a temperature range of at least -30°C to at least 180°C and have good anti-corrosion properties.
Abstract:
The invention relates to the use of ionic fluids for the production of water-resistant lubricating grease compositions, which are employed in a temperature range of at least -30°C to at least 180°C and have good anti-corrosion properties.
Abstract:
An engine startup torque transmitting device (1) for transmitting a drive torque, generated by a starter, to an engine crankshaft (2) to start up an engine, is disclosed having a clutch (6), disposed between a first rotary body (3), mounted on the crankshaft, and a second rotary body (5) rotatably supported on the first rotary body, through which a torque transfer is established from the second rotary body to the first rotary body. The clutch (6) is internally filled with lubricating grease including base oil containing squalene. Squalene has kinetic viscosity with less temperature dependency and high traction force. The use of grease containing squalene provides a compromise between clutch-engaging capability and wear resistance. This enables reduction in wear of an inner member without sacrificing clutch-engaging capability, resulting in an elongated operating life with no increase in physical size of the clutch.
Abstract:
An engine startup torque transmitting device (1) for transmitting a drive torque, generated by a starter, to an engine crankshaft (2) to start up an engine, is disclosed having a clutch (6), disposed between a first rotary body (3), mounted on the crankshaft, and a second rotary body (5) rotatably supported on the first rotary body, through which a torque transfer is established from the second rotary body to the first rotary body. The clutch (6) is internally filled with lubricating grease including base oil containing squalene. Squalene has kinetic viscosity with less temperature dependency and high traction force. The use of grease containing squalene provides a compromise between clutch-engaging capability and wear resistance. This enables reduction in wear of an inner member without sacrificing clutch-engaging capability, resulting in an elongated operating life with no increase in physical size of the clutch.
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:
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 (1) 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 or (2) at least one bromine or iodine atom at the primary position of the perfluoropolyether.
Abstract:
The invention relates to a lubricating composition which can be used to lubricate an interface between a tyre casing and a safety support which is mounted to the wheel rim inside said casing. The invention further relates to one such casing and a mounted assembly for a motor vehicle which are provided with the aforementioned lubricating composition. The inventive lubricating composition is characterised in that it comprises an alkene oxide polymer (polyoxyalkene) as a lubricating agent and between 4 % and 7.5 % silica (weight percent of the lubricating composition) as a thickening agent.
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:
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.