With Organic Sulfur, Phosphorus, Or Nitrogen Compound Patents (Class 508/128)
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Patent number: 11124731Abstract: The present invention provides a lubricant composition suitable for reducing friction between sliding members such as those within a pump for circulating a heat medium of a heat pump device, and a lubricating system using the composition as a heat medium. A lubricant composition 10 of the present invention comprises: an antifreeze liquid 11 containing ethylene glycol; and 0.01 mass % or less of nanodiamond particles 12. The nanodiamond particles 12 are preferably detonation nanodiamond particles. The lubricant composition 10 is preferably a liquid composition for a heat pump. In addition, the lubricating system of the present invention uses the lubricant composition 10 as a heat medium.Type: GrantFiled: April 3, 2018Date of Patent: September 21, 2021Assignee: DAICEL CORPORATIONInventors: Norihiro Kimoto, Tomohiro Goto
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Patent number: 11091719Abstract: The present invention provides a lubricant composition suitable for reducing friction between sliding members such as those within a pump for circulating a heat medium of a heat pump device, and a lubricating system using the composition as a heat medium. A lubricant composition 10 of the present invention comprises: an antifreeze liquid 11 containing ethylene glycol; and 0.01 mass % or less of nanodiamond particles 12. The nanodiamond particles 12 are preferably detonation nanodiamond particles. The lubricant composition 10 is preferably a liquid composition for a heat pump. In addition, the lubricating system of the present invention uses the lubricant composition 10 as a heat medium.Type: GrantFiled: April 3, 2018Date of Patent: August 17, 2021Assignee: DAICEL CORPORATIONInventors: Norihiro Kimoto, Tomohiro Goto
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Patent number: 10487278Abstract: The present invention generally relates to methods and compounds for reducing paraffin or wax deposition in crude oil during processing, storage, or transportation. More specifically, the method comprises contacting the crude oil with a composition in an amount effective to reduce paraffin or was deposition.Type: GrantFiled: February 17, 2017Date of Patent: November 26, 2019Assignee: Ecolab USA Inc.Inventor: Kim R. Solomon
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Patent number: 10093880Abstract: This disclosure relates to a process for extracting a perfluoropolyether. The process involves: (a) contacting a solvent comprising a liquid or supercritical carbon dioxide with a lubricating grease comprising a thickener and the perfluoropolyether in an extraction zone to form an extraction solution comprising an extracted perfluoropolyether; and (b) recovering the extracted perfluoropolyether from the extraction solution; wherein the recovered extracted perfluoropolyether comprises no more than about 2 wt % of the thickener.Type: GrantFiled: December 23, 2014Date of Patent: October 9, 2018Assignee: THE CHEMOURS COMPANY FC, LLCInventors: Keith W. Hutchenson, Sharon Ann Libert, Jon Lee Howell, Xian Liang
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Patent number: 10087393Abstract: This disclosure relates to a process for extracting a perfluoropolyether. The process involves: (a) contacting a solvent comprising a liquid or supercritical carbon dioxide with a lubricating grease comprising a thickener, an extraction aid material, and the perfluoropolyether in an extraction zone to form an extraction solution comprising an extracted perfluoropolyether; and (b) recovering the extracted perfluoropolyether from the extraction solution; wherein the recovered extracted perfluoropolyether comprises no more than about 2 wt % of the thickener.Type: GrantFiled: December 23, 2014Date of Patent: October 2, 2018Assignee: THE CHEMOURS COMPANY FC, LLCInventors: Keith W Hutchenson, Sharon Ann Libert, Jon Lee Howell, Xian Liang, Val Krukonis, Hans Schonemann
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Patent number: 8951942Abstract: A method for the preparation of carbon nanotube modified fluids such, that the dispersion of nanotubes in such fluids, exampled by those which are oil based is enhanced through the combined use of mechanical, sonic and ultrasonic devices.Type: GrantFiled: June 19, 2009Date of Patent: February 10, 2015Inventors: Martin Pick, Krzysztof Kazimiers Koziol, Alan Hardwick Windle
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Publication number: 20140329092Abstract: Heat-transfer fluids and lubricating fluids comprising deaggregated diamond nanoparticles are described herein. Also described are composites comprising deaggregated diamond nanoparticles, and methods of making such composites. Method of using deaggregated diamond nanoparticles, for example, to improve the properties of materials such as thermal conductivity and lubricity are also disclosed.Type: ApplicationFiled: April 8, 2014Publication date: November 6, 2014Applicant: Vanderbilt UniversityInventors: Blake T. Branson, Charles M. Lukehart, Jim L. Davidson
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Publication number: 20140274831Abstract: A gear oil composition is provided. The composition comprises a major amount of base oil comprising a mixture of a mineral base oil and polybutene; and 0.1 to 0.5 wt % of carbon black, based on the total weight of the gear oil composition. Such compositions can provide improved viscosity stability.Type: ApplicationFiled: May 30, 2014Publication date: September 18, 2014Applicant: Chevron U.S.A. Inc.Inventor: Etho Satish Lalla
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Publication number: 20140162913Abstract: Disclosed are corrosion-inhibiting lubricant compositions and methods of making and using the compositions. The lubricant compositions contain petroleum based components, corrosion-inhibiting additives and a cationic surfactant. In some embodiments, the lubricant compositions also contain nano diamonds. Under standard salt fog tests, compositions exhibited 120 or 168 hours to failure, or 0-20% rust at 192 hours. Under standard wear preventative characteristics tests, compositions exhibited as low as 0.55 mm wear. Also disclosed are a device and method for aerosol delivery of a corrosion-inhibiting lubricant.Type: ApplicationFiled: July 25, 2012Publication date: June 12, 2014Inventor: David McCreery
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Publication number: 20140106995Abstract: Disclosed is a surface-treating agent for oil seal lip portion, comprising a lubricant filler and an adduct compound consisting of an adduct of toluene diisocyanate and trimethylolpropane, the surface-treating agent being applied to the surface of vulcanized rubber forming a lip portion of an oil seal comprising the lip portion and a metal ring. The application of the surface-treating agent of the present invention to the sliding surface of a seal lip portion of an oil seal effectively lengthens the service life of the oil seal, when used in a sliding part or a moving part, and leads to energy saving of equipment that uses the oil seal.Type: ApplicationFiled: June 14, 2012Publication date: April 17, 2014Applicant: NOK CorporationInventor: Kenichi Kunieda
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Patent number: 8663495Abstract: According to some embodiments, the present provides a heat transfer medium that includes, but is not limited to a base fluid, a plurality of single-walled carbon nanotubes, and a gelling formulation formed of an amine surfactant, an intercalating agent, and an oxygen-bearing solvent. The heat transfer medium is adapted for improved thermal conductivity with respect to the base fluid.Type: GrantFiled: February 22, 2007Date of Patent: March 4, 2014Assignee: William Marsh Rice UniversityInventors: Bertha Catalina Rostro, Enrique V. Barrera
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Publication number: 20140038862Abstract: Provided are a lubricating engine oil and a method of improving wear protection in an engine lubricated with such lubricating oil. The method includes using as the lubricating oil a formulated oil comprising a lubricating oil base stock as a major component, an antiwear additive as a first minor component, and carbon nanoplatelets as a second minor component. The carbon nanoplatelets are dispersed in said lubricating oil base stock. Wear protection is improved as compared to wear protection achieved using a lubricating oil not containing carbon nanoplatelets as a second minor component. A synergy exists between carbon nanoplatelets and other major components of lubricants, especially with zinc dialkyldithiophosphate (ZDDP) or other phosphate antiwear additives, that helps to form a nano-composite wear resistant and low friction tribofilm both on ferrous and non-ferrous surfaces (e.g., carbon coatings, ceramic coatings, polymeric coatings, and the like) of engines/machines.Type: ApplicationFiled: July 22, 2013Publication date: February 6, 2014Applicant: EXXONMOBIL RESEARCH AND ENGINEERING COMPANYInventors: Tabassumul Haque, Martin N. Webster, Andy Haishung Tsou
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Publication number: 20140005085Abstract: Embodiments of the present invention may include a macro-composition with a special structure. The structure includes a layered macro-composition made of a nanoparticle as an inner nucleus, an intermediate layer around the nucleus, and an outer layer intercalated with the nucleus or encapsulating the nucleus and the intermediate layer. A plurality of the layered macro-compositions is bonded together by bonds, so that each layered macro-composition is bonded to at least one other such layered macro-composition. Embodiments include a macro-composition made of three 3-layered macro-compositions joined in a chain by two bonds. These macro-composition assemblies may take the shape of layered macro-compositions bonded together in chains, or forming other shapes, such as rings. The layered macro-composition may be no more than about 100 nanometers in size, for example. The bonds of the complex macro-composition may have an average length of no more than about 100 nanometers, for example.Type: ApplicationFiled: May 31, 2013Publication date: January 2, 2014Applicant: NanoMech, Inc.Inventor: Ajay P. Malshe
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Patent number: 8598098Abstract: A lubricant composition applicable to a sliding section or sliding member of an automotive internal combustion engine or power transmission apparatus to significantly lower a friction coefficient. The lubricant composition contains a base oil for a lubricating oil, an oxygen-containing organic compound, a diamond nano-particle and a dispersant for the diamond nano-particle.Type: GrantFiled: January 24, 2008Date of Patent: December 3, 2013Assignee: Nissan Motor Co., Ltd.Inventors: Akira Nakagawa, Yutaka Mabuchi
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Patent number: 8575079Abstract: A lube oil composition is provided. The lube oil composition includes a base oil and a carbon nanocapsule grafting with an alkyl group dispersed in the base oil, wherein the carbon nanocapsule is hollow or filled with metal, metal alloy, metal oxide, metal carbide, metal sulfide, metal nitride or metal boride.Type: GrantFiled: May 2, 2008Date of Patent: November 5, 2013Assignee: Industrial Technology Research InstituteInventors: Gan-Lin Hwang, Ting-Yao Su, Woan-Shiow Tzeng, Hsin-Yi Wu
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Publication number: 20130267447Abstract: A grease composition includes: at least one mineral-based, synthetic-based, or natural-based oil, a thickener predominantly consisting of at least one simple or complex aluminium soap; at least one molybdenum dithiocarbamate; and graphite. The grease can be used for the lubrication of open systems.Type: ApplicationFiled: December 12, 2011Publication date: October 10, 2013Applicant: TOTAL RAFFINAGE MARKETINGInventor: Franck Bardin
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Patent number: 8513170Abstract: A method for producing a solid lubricant includes steps of preparing and coating. A phosphate aqueous solution prepared by the step of preparing is an aqueous solution containing at least one of aluminum dihydrogen phosphate and magnesium dihydrogen phosphate in an amount of 0.5 to 10% by mass. A graphite material is coated with a phosphate using the phosphate aqueous solution. The graphite material is used at a ratio of 40 to 50 parts by mass based on 100 parts by mass of the aqueous solution.Type: GrantFiled: October 15, 2010Date of Patent: August 20, 2013Assignee: Akebono Brake Industry Co., Ltd.Inventors: Masanori Kato, Hiroshi Idei, Akinori Hashimoto
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Patent number: 8455407Abstract: The invention relates to the use of ionic liquids for production of water-resistant lubricating grease compositions, which are used in a temperature range from at least 30° C. to at least 180° C. and have good anticorrosion properties.Type: GrantFiled: March 19, 2009Date of Patent: June 4, 2013Assignee: Kluber Lubrication Munchen KGInventors: Martin Schmidt-Amelunxen, Dieter Sohn, Stefan Grundei, Andrea Höpke
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Patent number: 8435931Abstract: Lubricating oil of reduced friction comprise lubricating oil base stock and dissolved therein carbon nanomaterials functionalized on their surface with ester or amide functionality and made using a technique involving multiple space apart in time or dropwise additions of reactants to the carbon nanomaterials.Type: GrantFiled: July 13, 2010Date of Patent: May 7, 2013Assignee: Exxonmobil Research and Engineering CompanyInventors: Jacob Joseph Habeeb, Caliann N. Bogovic
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Patent number: 8283296Abstract: A substantially lead-free lubricant for use in hot forging of metals, especially forging of aluminum and aluminum alloy components. The lubricant comprises one or more oils, graphite, and one or more phosphorus-based additives. Additional additives, such as metallic lubricants and dispersants may also be included. The lubricant does not burn when subjected to temperatures in excess of 300° C.Type: GrantFiled: October 11, 2006Date of Patent: October 9, 2012Assignee: Henkel AG & Co., KGaAInventors: Laurent Hugues, Harold Gankema, Geert Heideman, Douwe Marten Kok, Gerko Odink
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Publication number: 20120251521Abstract: The present invention is a solution or colloid of fullerene, SWNTs, or graphene in cyclic terpenes, lactones, terpene-alcohol, fatty-acid alcohols, and lactones following ultrasonication and ultracentrifugation processing, for oil-energy, biological, electrical-thermal applications. The compositions are useful as fuel/oil/grease/gels (synthetic included), oil/fuel/additives/propellants, identification dyes, and heat-transfer fluids. Other functions are phase-change fluids for solar energy power plants, antifreeze, electronic dyes, electrolytic fluid/solvent, electrically-thermally conductive material for electrochemical, dielectric, filler/adhesive for semiconductor, eletro-optical, and liquid crystal substrates/coatings for touch sensitive transmissive or reflective displays. When combined with gelatin the formulations can function as dichroic-optical coatings for thin-films/waveguides/holograms.Type: ApplicationFiled: April 2, 2011Publication date: October 4, 2012Inventors: Bertha Rostro, Mehdie Kohanloo
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Publication number: 20110252825Abstract: The present invention provides a refrigerator oil composition which satisfies both sludge dispersibility and prevention of wear and seizing of sliding parts made of aluminum and/or iron, and a compressor and a refrigeration apparatus using the refrigerator oil composition. The refrigerator oil composition is characterized by comprising a base oil which is at least one member selected from mineral oils and synthetic oils, and at least one polyamide compound having two or more amide groups in the molecule and being present in an amount of 0.01 to 5% by mass based on the total amount of the refrigerator oil composition.Type: ApplicationFiled: June 29, 2011Publication date: October 20, 2011Applicant: Idemitsu Kosan Co., Ltd.Inventor: Masato KANEKO
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Publication number: 20110224113Abstract: A method for the preparation of carbon nanotube modified fluids such, that the dispersion of nanotubes in such fluids, exampled by those which are oil based is enhanced through the combined use of mechanical, sonic and ultrasonic devices.Type: ApplicationFiled: June 19, 2009Publication date: September 15, 2011Inventors: Martin Pick, Krzysztof Kazimiers Koziol, Alan Hardwick Windle
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Publication number: 20110092399Abstract: The invention relates to the use of ionic liquids for production of water-resistant lubricating grease compositions, which are used in a temperature range from at least 30° C. to at least 180° C. and have good anticorrosion properties.Type: ApplicationFiled: March 19, 2009Publication date: April 21, 2011Inventors: Martin Schmidt-Amelunxen, Dieter Sohn, Stefan Grundei, Andrea Höpke
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Publication number: 20110059301Abstract: The invention relates to a wiping rubber for wiper blades in windshield wipers, comprising a profile body formed of an elastomer or rubber material, at least partially having a surface coating. The surface coating (22) comprises carbon fibers (24).Type: ApplicationFiled: April 1, 2009Publication date: March 10, 2011Applicant: ROBERT BOSCH GMBHInventors: Reiner Lay, Valerie Carlier
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Publication number: 20100240557Abstract: A perfluoropolyether oil composition, which comprises a perfluoro-polyether base oil, preferably a thickener-containing perfluoropolyether base oil, and a fluorine-containing di- or mono-amide-based compound having a perfluoropolyether group, where 0.01 to 50% by weight of the amide-based compound, based on total weight of the base oil and the amide-based compound, is contained when the perfluoropolyether oil composition is used as a lubricating oil composition, particularly grease, and 0.01 to 90% by weight thereof is contained, when the perfluoropolyether oil composition is used as an electrode-coating agent for a cell. The perfluoropolyether oil composition shows a metal surface protective action against corrosive gases such as sulfide gases, etc. without deteriorating the abrasion resistance, and also shows a distinguished high temperature durability even in the presence of graphite or molybdenum disulfide.Type: ApplicationFiled: March 25, 2010Publication date: September 23, 2010Applicant: NOK KLUBER CO., LTD.Inventors: Yuji WATANABE, Yasumichi KIDO, You DOI, Miyuki HASHIDA, Toshio NITTA, Tatsuya HASHIMOTO, Akira OTANI, Jiro YURIMOTO
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Publication number: 20100022422Abstract: A process for producing a nanographite dispersion in a fluid wherein the thermal conductivity of the dispersion is enhanced from the base fluid by more than 10% for a 1% graphite dispersion. A high purity graphite with high crystallinity and reduced surface damage and oxidation is selected as the starting material. The starting material is subjected to a process of wet media milling in the presence of dispersant and solvent fluid. The mill temperature is controlled to control and reduce surface damage to yield a nanographite with flake shape and controlled aspect ratio until a particle size average of 300 nm diameter and 50 nm is obtained. The process recycles a portion of the milled material to increase the ratio of small particle distribution to large particles in an intermediate product with small and large particle bi-modal distribution. The large particle distribution is removed by a separation process such as centrifugation or filtration.Type: ApplicationFiled: May 15, 2007Publication date: January 28, 2010Inventors: Gefei Wu, Zhiqiang Zhang, Frances E. Lockwood, Stephanie M. McCoy, Thomas R. Smith
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Publication number: 20090305052Abstract: The invention relates to an aqueous graphite dispersion including graphite particles dispersed in water along with stabilizers acting as dispersants, and additives. The graphite particles are at least partially spherical.Type: ApplicationFiled: September 8, 2006Publication date: December 10, 2009Applicant: GRAPHIT KROPFMUHL AGInventor: Werner Handl
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Patent number: 7624990Abstract: A sealant is provided that possesses many or all of the characteristics of conventional thread sealants, and allows application with improved smoothness and uniformity of application. Sealants in accordance with the invention utilize engineered fibers such as melamines like Basofill and polyaramids such as Kevlar in its composition. Engineered fibers offer consistency and uniformity that other previously used sealants lack. Engineered fibers can improve the gap filling characteristics of the sealant, as well as the resistance of the sealant to chemicals and high pressures. Engineered fibers tend to have very high strength and low density.Type: GrantFiled: April 11, 2006Date of Patent: December 1, 2009Assignee: Hercules Chemical Company Inc.Inventors: Fred Richard Scholer, John Wrobleski
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Publication number: 20080248979Abstract: A lubricant composition applicable to a sliding section or sliding member of an automotive internal combustion engine or power transmission apparatus to significantly lower a friction coefficient. The lubricant composition contains a base oil for a lubricating oil, an oxygen-containing organic compound, a diamond nano-particle and a dispersant for the diamond nano-particle.Type: ApplicationFiled: January 24, 2008Publication date: October 9, 2008Inventors: Akira NAKAGAWA, Yutaka Mabuchi
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Publication number: 20080090740Abstract: A substantially lead-free lubricant for use in hot forging of metals, especially forging of aluminum and aluminum alloy components. The lubricant comprises one or more oils, graphite, and one or more phosphorus-based additives. Additional additives, such as metallic lubricants and dispersants may also be included. The lubricant does not burn when subjected to temperatures in excess of 300° C.Type: ApplicationFiled: October 11, 2006Publication date: April 17, 2008Inventors: Laurent Hugues, Harold Gankema, Geert Heideman, Douwe Marten Kok, Gerko Odink
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Patent number: 7294608Abstract: The present invention discloses the use of calcium sulfonate based greases compounds for use in application where the compounds are continuously, periodically or intermittently exposed to fluids that tend to contamination, erode, ablate or otherwise remove or interfere with the compounds ability to protect contact surfaces such as those present in threaded connections, and, especially in threaded connections associated with oilfield applications. The present invention also discloses methods for making and using such greases and compounds in application where the compounds are continuously, periodically or intermittently exposed to fluids that tend to contamination, erode, ablate or otherwise remove or interfere with the compounds ability to protect contact surfaces.Type: GrantFiled: April 28, 2003Date of Patent: November 13, 2007Assignee: Jet-Lube, Inc.Inventors: Donald Oldiges, Herschel McDonald, Tom Blake
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Patent number: 7105472Abstract: The present invention relates to a coating solution to be applied on the surface of metals or metal alloys, a process for cold forming of metals and metal alloys using said coating solution, and a coated blank made of a metal or a metal alloy.Type: GrantFiled: April 4, 2003Date of Patent: September 12, 2006Inventor: Walter Zepf
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Patent number: 7014694Abstract: An oil-based corrosion inhibitor composition for use in lubricating and/or hydraulic oils includes an oil-soluble sulfonate salt, an imidazoline salt of a fatty acid or a poly acid, and a polymerized ester, with the corrosion inhibitor composition being diluted with a polyalphaolefin to a suitable viscosity for subsequent use as an additive to such oils. In preferred embodiments, the corrosion inhibiting additive composition is mixed with the lubricating and/or hydraulic oils at a concentration of between about 2–5% by weight of the combination.Type: GrantFiled: April 9, 2003Date of Patent: March 21, 2006Assignee: Cortec CorporationInventors: Boris A. Miksic, Alla Furman, Margarita Kharshan, Lee Boutelle
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Patent number: 6734147Abstract: A process is disclosed for manufacturing a lubricant composition comprising combining a superabsorbent polymer with a material for decreasing friction between moving surfaces. The superabsorbent polymer absorbs from about 25 to greater than 100 times its weight in water and may comprise a polymer of acrylic acid, an acrylic ester, acrylonitrile or acrylamide, including co-polymers thereof or starch graft co-polymers thereof or mixtures thereof. A product produced by the process includes the material for decreasing friction comprising a petroleum lubricant containing an additive, water containing an additive, synthetic lubricant, grease, solid lubricant or metal working lubricant, wherein the synthetic lubricant, grease, solid lubricant or metal working lubricant optionally contain an additive. A process comprising controlling the delivery of a lubricant to at least one of two moving surfaces in order to decrease friction between said moving surfaces, is also disclosed.Type: GrantFiled: October 3, 1997Date of Patent: May 11, 2004Assignee: LCC County Mosquito ControlInventor: Richard Levy
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Publication number: 20030216265Abstract: The present invention relates to a coating solution to be applied on the surface of metals or metal alloys, a process for cold forming of metals and metal alloys using said coating solution, and a coated blank made of a metal or a metal alloy.Type: ApplicationFiled: April 4, 2003Publication date: November 20, 2003Inventor: Walter Zepf
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Publication number: 20030158047Abstract: 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.Type: ApplicationFiled: February 27, 2003Publication date: August 21, 2003Applicant: NSK LTD.Inventors: Katsuaki Denpo, Atsushi Yokouchi, Koichi Hachiya, Michiharu Naka, Tooru Shouda, Hideki Koizumi
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Patent number: 6589918Abstract: 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.Type: GrantFiled: June 21, 2001Date of Patent: July 8, 2003Assignee: NSK Ltd.Inventors: Katsuaki Denpo, Atsushi Yokouchi, Koichi Hachiya, Michiharu Naka, Tooru Shouda, Hideki Koizumi
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Publication number: 20020022580Abstract: A powdery mold-releasing lubricant according to the present invention uses a powdery mixture of a powdery organic material, which is evaporated or decomposed by heating to generate a gas, and a powdery inorganic material. A gas-solid mixed layer formed with the gas generated from the powdery mixture and the powdery inorganic material is used as a heat-insulating boundary layer. The powdery mold-releasing lubricant is inexpensive and has a superior mold lubricity.Type: ApplicationFiled: June 12, 2001Publication date: February 21, 2002Inventors: Hideharu Fukunaga, Makoto Yoshida, Takami Sawai
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Publication number: 20020019319Abstract: 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.Type: ApplicationFiled: June 21, 2001Publication date: February 14, 2002Applicant: NSK LTD.Inventors: Katsuaki Denpo, Atsushi Yokouchi, Koichi Hachiya, Michiharu Naka, Tooru Shouda, Hideki Koizumi
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Patent number: 6335309Abstract: Die release lubricant is made from powder solid lubricant, adhesion enhancer made of organic or inorganic compound and volatile solvent. Before melted metal is injected into a die for casting, the die release lubricant is sprayed to an inside surface of the die. The die release lubricant is in a liquid state and is uniformly applied to the inside surface of the die. As a result, application efficiency of the die release lubricant is improved while an amount of thermal decomposition gas generated during casting is reduced.Type: GrantFiled: July 20, 1999Date of Patent: January 1, 2002Assignees: Denso Corporation, Nippon Graphite Industries Co., Ltd.Inventors: Hiromi Takagi, Tomoyuki Hatano, Tadao Okura
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Patent number: 6255260Abstract: A metal forming lubricant suitable for extreme condition use is formulated to contain one or more differential solid lubricants composed of a high melt temperature, substantially halogen-free thermoplastic in addition to conventional lubricants such as organic phosphate esters and natural and synthetic polymer waxes. The lubricants offer superior performance while resisting the tendency to foul metal working dies with gummy deposits.Type: GrantFiled: September 13, 1999Date of Patent: July 3, 2001Inventor: David J. Stork
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Patent number: 5776866Abstract: A parting agent capable of being applied to a die with split die members closed, and preventing the production of defective castings and the occurrence of heat shock as well as the precipitation of a solid lubricant. The parting agent is composed of a mixture of a parting component, a dispersing component for dispersing the paritng component through water, a surface active agent as a foaming agent, and water, and is foamed into a foamy state. The foamy parting agent can be applied to the die with the split die members closed. This overcomes problems caused by the scattering of the parting agent due to spraying. In addition, since the parting component is retained with a film defining foam, the separation and precipitation thereof can be prevented.Type: GrantFiled: October 11, 1996Date of Patent: July 7, 1998Assignees: Toyota Jidosha Kabushiki Kaisha, Hitachi Powdered Metals Co., Ltd.Inventors: Mithuhiro Karaki, Mikiya Nozaki, Masato Hakoiwa, Toshiaki Midorikawa
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Patent number: 5547594Abstract: This invention relates to lubricants for polyethylene snow sliders which comprise fluorinated disulfides of the formula[R.sub.f (CH.sub.2).sub.m S].sub.2having a melting point of at least 25.degree. C. at most 60.degree. C., a fluorine content of at least 61% and at most 68% and wherein R.sub.f is independently a straight or branched perfluoroalkyl group.Type: GrantFiled: February 3, 1995Date of Patent: August 20, 1996Inventor: Athanasios Karydas