Chalcogen Attached Indirectly To The -c(=o)o-group By Nonionic Bonding (e.g., Pentaerythritol Monooleate, Etc.) Patents (Class 508/501)
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Patent number: 7772170Abstract: Antimony dithiocarbamate is known to provide extreme pressure (EP) protection in lubricating compositions, such as grease. However, there is a desire to reduce the amount of antimony used in such compositions, while still maintaining acceptable EP performance. It has now been found by using small amounts of either ammonium dithiocarbamate or zinc dithiocarbamate in combination with the antimony dithiocarbamate (SbDTC), a lower amount of SbDTC can be used in the lubricating composition while still maintaining excellent or exceptional EP protection. To counteract the corrosive effects of the SbDTC and ammonium dithiocarbamate composition, it has been found that compounds containing a carboxylic acid group are effective in avoiding copper corrosion.Type: GrantFiled: February 10, 2006Date of Patent: August 10, 2010Assignee: R.T. Vanderbilt Company, Inc.Inventors: Ronald J. Hiza, Gaston A. Aguilar, Steven G. Donnelly, Francis S. Cheng, Ronald J. Tepper
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Patent number: 7741258Abstract: A lubricating oil composition comprising base oil, one or more glycerol esters selected from glycerol monooleate and/or glycerol dioleate, optionally in combination with glycerol trioleate, wherein said composition further comprises one or more dispersant-viscosity index improver compounds and an additive amount of one or more additional polyhydric alcohol esters; and a method of lubricating an internal combustion engine comprising applying said lubricating oil composition thereto.Type: GrantFiled: February 21, 2007Date of Patent: June 22, 2010Assignee: Shell Oil CompanyInventors: Takashi Fujitsu, Joanna Griffiths
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Patent number: 7727944Abstract: Compositions of an ester-containing phenolic antioxidant seal-conditioning agent represented by the formula and a second seal-conditioning agent selected from sulfolanes, benzyl ester, lactones, nitriles, and other ester-containing phenolic anitoxidant seal-conditioning agents, serve to protect the integrity of elastomeric materials in contact with lubricants.Type: GrantFiled: August 9, 2005Date of Patent: June 1, 2010Assignee: The Lubrizol CorporationInventors: Edward J. Konzman, Richard M. Lange
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Publication number: 20100117022Abstract: A polyol ester suitable for use as a lubricant or a lubricant base stock has a kinematic viscosity at 40° C. less than or equal to 22 cSt and a viscosity index of greater than or equal to 140. The ester comprises a reaction product of (a) at least one polyhydric alcohol having at least 2 primary hydroxyl groups, (b) at least one monocarboxylic acid having 2 to 15 carbon atoms and (c) at least one polycarboxylic acid having 2 to 15 carbon atoms, wherein the number of acid groups derived from the polycarboxylic acid(s) is at least 25% of the total number of acid groups derived from the monocarboxylic and polycarboxylic acids.Type: ApplicationFiled: October 8, 2009Publication date: May 13, 2010Applicant: CHEMTURA CORPORATIONInventors: Dale Carr, Jeffrey Hutter, Edward T. Hessell, Richard Kelley
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Patent number: 7709428Abstract: A substantially anhydrous, thickened, spreadable, warming lubricant composition comprising a mixture of glycerin, polyhydric alcohol, a non-ionic surfactant, and a Carbomer thickener, the surfactant improving wetting and spreadability of the composition on skin and latex, and the thickener providing a creamy rich feel to the composition, such that the composition can be applied to skin or a condom and provide an optimal warming effect upon contact with ambient moisture during use and such that the composition can be added to a condom package and, over the course of a week, spread and coat nearly the entire internal and external surfaces of the condom.Type: GrantFiled: February 23, 2005Date of Patent: May 4, 2010Assignee: Ansell Healthcare Products LLCInventors: Beng Sim Chuah, David M. Lucas, Tsui Shih Yeun, Dave Narasimhan
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Publication number: 20100093572Abstract: Embodiments of the invention provide a food grade lubricant, such as one of synthetic or mineral oil origin, which can be used for the lubrication of rotary screw compressors. The lubricant composition can include a blend of incidental food contact authorized ester or a distilled, acetylated monoglyceride. The lubricant composition can also include an incidental food contact authorized polyether polyol having an average molecular weight number greater than about 1500. The blend can be compounded with additives including one or more of antioxidants, corrosion inhibitors, metal passivators, and anti-foam agents that are cleared for incidental food contact.Type: ApplicationFiled: October 7, 2009Publication date: April 15, 2010Inventors: Troy F. Paquette, Eric J. Peter
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Publication number: 20100093571Abstract: Embodiments of the invention provide a food grade food grade lubricant, such as one of synthetic or mineral oil origin, which can be used for the lubrication of compressors and vacuum pumps. The lubricant composition can include a blend of alkylated aromatics, such as naphthalenes, and synthetic hydrocarbons comprised of polyalphaolefin fluids. The blend can be compounded with additives including one or more of antioxidants, corrosion inhibitors, antiwear additives, metal passivators, and anti foam agents that are cleared for incidental food contact.Type: ApplicationFiled: October 7, 2009Publication date: April 15, 2010Inventors: Troy F. Paquette, Eric J. Peter
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Publication number: 20100087348Abstract: The present invention provides a lubricating oil composition comprising a mixture of both a poly-alpha-olefin and an ester compound, the lubricating oil composition having an SAE viscosity grade of 75 W-85, satisfying GL-5 in terms of API gear oil designation and having a viscosity index of 160 or more. The above mixture of the poly-alpha-olefin and ester compound is preferably contained in an amount of from 75 to 90 wt % with reference to the total amount of the lubricating oil composition. The poly-alpha-olefin is preferably a mixture of a poly-alpha-olefin having low viscosity of from about 3 to 6 mm2/s at 100° C. and a poly-alpha-olefin having high viscosity of from about 35 to 45 mm2/s at 100° C.Type: ApplicationFiled: December 24, 2007Publication date: April 8, 2010Inventors: Keiichi Moriki, Eiji Nagatomi, Kenji Ueno, Koji Saito, Kiyonari Ishikawa, Hiroshi Fujito
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Publication number: 20100071406Abstract: The present invention provides a lubricating oil for a compression type refrigerator including a polyvinyl ether-based compound containing an alkylene glycol or polyoxyalkylene glycol unit and a vinyl ether unit in a molecule and having a molecular weight in a range of 300 to 3,000; and an organic carboxylic acid ester of a polyhydric alcohol in which the ester contains two or more free hydroxyl groups. The lubricating oil for a compression type refrigerator of the present invention has high miscibility and high viscosity index, and is excellent in wear resistance and also corrosion prevention property under carbon dioxide atmosphere.Type: ApplicationFiled: September 25, 2007Publication date: March 25, 2010Applicant: Idemitsu Kosan Co., LtdInventors: Masato Kaneko, Harutomo Ikeda
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Publication number: 20100069273Abstract: A method of improving the compatibility of an overbased detergent with other additives in a lubricating oil composition. The method includes the step of the using a detergent have a degree of carbonation of greater than 85%.Type: ApplicationFiled: April 10, 2008Publication date: March 18, 2010Inventor: Philip Skinner
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Publication number: 20100056408Abstract: A drag reducing additive for heavy oil, such as crude oil, includes a polymeric alkyl-substituted phenol formaldehyde resin and a solvent having at least one of an ester (e.g. ethyl acetate), an aldehyde (e.g. butyraldehyde), and an aromatic hydrocarbon (e.g. toluene, xylene, and the like), or mixtures thereof. When used together with a diluent (e.g. condensate, naphtha, or the like), the additive may reduce viscosity of the combined oil, diluent, and additive by at least 20%, increase throughput by at least 6%, reduce power consumption by at least 3%, reduce the diluent proportion by at least 3%, or some combination of these effects, as compared with an otherwise identical heavy oil without the additive.Type: ApplicationFiled: August 25, 2009Publication date: March 4, 2010Applicant: Baker Hughes IncorporatedInventors: Samuel Asomaning, Scott E. Lehrer
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Publication number: 20100051854Abstract: The refrigerating machine oil of the invention is characterized by comprising an ester of a polyhydric alcohol and fatty acids with a content of a C10-C13 branched fatty acid of 50% by mole or greater. The working fluid composition for a refrigerating machine of the invention is characterized in that the working fluid composition comprises an ester of a polyhydric alcohol and fatty acids with a content of a C10-C13 branched fatty acid of 50% by mole or greater, and a refrigerant.Type: ApplicationFiled: March 11, 2008Publication date: March 4, 2010Applicant: NIPPON OIL CORPORATIONInventors: Ken Sawada, Yuji Shimomura, Katsuya Takigawa
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Publication number: 20100029522Abstract: A refrigerator oil composition includes: a synthetic base oil; and a partial hydrocarbyl ether of an aliphatic polyhydric alcohol condensate, in which the aliphatic polyhydric alcohol condensate includes a condensate of 4 to 20 molecules of a hindered glycol and/or an aliphatic polyhydric alcohol having 3 to 6 hydroxyl groups. The refrigerator oil composition is preferably used in a compression refrigerator that uses a hydrofluorocarbon, a natural refrigerant such as a hydrocarbon, carbon dioxide, or ammonia, a mixed refrigerant of fluoroiodomethane and propene, an unsaturated fluorinated hydrocarbon, a fluorinated ether, a fluorinated alcohol, a fluorinated ketone, or a mixture thereof as a refrigerant, has a low coefficient of friction, and is excellent in energy-saving property.Type: ApplicationFiled: November 5, 2007Publication date: February 4, 2010Applicant: IDEMITSU KOSAN CO., LTD.Inventors: Takeo Tokiai, Masato Kaneko, Hiroaki Koshima
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Publication number: 20100004150Abstract: Provided are aluminum chelates having the formula (I). Also provided are compositions having these chelates, methods of producing these chelates, and methods of modifying the viscosity of a liquid or a semisolid using these chelates.Type: ApplicationFiled: August 21, 2007Publication date: January 7, 2010Inventors: Jerry R. Patton, Robert W. Alverson
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Publication number: 20090258804Abstract: A lubricant for food, beer or beverage container and container component stock is provided containing, as a conductivity enhancing additive, a phospholipid having a structure of Formula (I): wherein R1 and R2 are fully saturated fatty acyl radicals derived from saturated fatty acids containing from about 10 to 22 carbon atoms; and R3 is selected from the group consisting of choline, salts and mono- salts of Group I and II metals and fatty acid neutralized ethanolamine. Lubricant formulations are also described, comprising 0.5 to 50 wt % fatty acid ester of propylene glycol, 0.5 to 90 wt % petrolatum and 0.5 to 90 wt % mineral white oil. Finally, a lubricant for metalworking is described, containing as a load-bearing additive, a fatty acid monoester of propylene glycol as given by Formula (II): wherein n is from 7 to 21 and in which the acyl moiety is hydrogenated to maximize saturation.Type: ApplicationFiled: June 11, 2009Publication date: October 15, 2009Inventors: Krzysztof Ryszard Januszkiewicz, Harold Daniel Pattemore
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Publication number: 20090253597Abstract: In one embodiment, a lubricating oil with favorable deposit control is disclosed. The lubricating oil comprises, a major amount of base stock selected from the group consisting of Group II, Group III, GTL and any combination thereof, a mannich based dispersant comprising at least 0.1 and less than 2.0 weight percent of the lubricating oil, a demulsifier comprising a polyol ester and a poly oxyakylene, the demulsifiers comprising at least 0.002 to less than 2.0 weight percent of the lubricating oil, wherein the lubricating oil has a deposit control value less than 60 using 504 hour 120° C. Dry TOST sludge test. In a second embodiment a method of deposit control is disclosed. In a third embodiment a method of formulating an oil to improve deposit control and emulsion properties is disclosed.Type: ApplicationFiled: March 27, 2009Publication date: October 8, 2009Inventors: Andrea B. Wardlow, David G.L. Holt
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Publication number: 20090151494Abstract: A power transmission system and a method for enhancing the efficiency of such systems are provided. The system and method includes a lubricant having a viscosity from about 0.01 centistokes to about 400.00 centistokes, power transmission components with a contact surface finish of less than about 16 microinches, and coating the power transmission components with the lubricant during operation of the system.Type: ApplicationFiled: December 2, 2005Publication date: June 18, 2009Inventors: Clark V. Cooper, Joseph J. Sangiovanni, Hongmei Wen, Edward J. Karedes
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Publication number: 20090137436Abstract: The present invention provides a multifunctional lubricant additive package or composition for improving load-carrying capacity, pressure resistance, surface fatigue life, and other performance characteristics of a lubricant or base oil. The composition typically includes four components: (a) an alkyl or aryl neutral phosphate, (b) a long-chain organic partial ester, (c) an aryl or alkyl phosphite, and (d) a phenol compound. The present invention further provides a multifunctional lubricant having improved performance characteristics, which are obtained by mixing a lubricant with the above-described multifunctional lubricant additive package or composition.Type: ApplicationFiled: November 4, 2005Publication date: May 28, 2009Inventors: Hongmei Wen, Clark V. Cooper
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Publication number: 20090105104Abstract: Oil composition comprising a base oil component having viscosity index of greater than 120, a sulphur content of below 0.03 wt %, and a saturates content of greater than 98 wt % and an additive, wherein the base oil component has a paraffin content of greater than 80 wt % and comprises a series of iso-paraffins having n, n+1, n+2, n+3 and n+4 carbon atoms and =10 wherein n is between 20 and 40 and wherein the oil composition comprises more than 0.2 wt % of a sterically hindered phenolic type antioxidant.Type: ApplicationFiled: June 22, 2006Publication date: April 23, 2009Inventor: David John Wedlock
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Publication number: 20090082236Abstract: The present invention provides a multifunctional lubricant additive or composition for improving load-carrying capacity, scuffing (scoring) resistance, and other performance characteristics of a lubricant. The composition includes a friction modifier, an antiwear additive, an extreme pressure additive, and a surface fatigue life modifier. The present invention further provides a method for improving the performance characteristics of a lubricant, which includes a step of mixing a lubricant base oil or fully formulated lubricant with the above-described multifunctional lubricant additive composition.Type: ApplicationFiled: November 4, 2005Publication date: March 26, 2009Applicant: UNITED TECHNOLOGIES CORPORATIONInventors: Hongmei Wen, Clark V. Cooper
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Publication number: 20090054283Abstract: This invention relates to lubrication oil compositions comprising (i) a base fluid stock comprising (a) a PO3G fluid (a polytrimethylene ether glycol that is a fluid at ambient temperature) and (b) a PO3G ester fluid (an ester of a polytrimethylene ether glycol that is a fluid at ambient temperature), and (ii) one or more fuel oil additives.Type: ApplicationFiled: August 21, 2008Publication date: February 26, 2009Applicant: E.I. duPont de Nemours and CompanyInventors: Matthew Arthur Page, Hari Babu Sunkara, Kanthi S. Wijesekera
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Publication number: 20090054284Abstract: This invention relates to lubrication oil compositions comprising (i) an acid ester (monoester and/or diester) of polytrimethylene ether glycol; and (ii) a vegetable oil lubricant.Type: ApplicationFiled: August 21, 2008Publication date: February 26, 2009Applicant: E. I. duPont de Nemours and CompanyInventor: Hari Babu Sunkara
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Publication number: 20090054282Abstract: This invention relates to lubrication oil compositions comprising (i) a base fluid stock comprising an acid ester of a polytrimethylene ether glycol that is a fluid at ambient temperature, and (ii) one or more lube oil additives.Type: ApplicationFiled: August 21, 2008Publication date: February 26, 2009Applicant: E.I. duPont de Nemours and CompanyInventor: Hari Babu Sunkara
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Publication number: 20080280795Abstract: A lubricating oil composition comprising base oil, one or more glycerol esters selected from glycerol monooleate and/or glycerol dioleate, optionally in combination with glycerol trioleate, wherein said composition further comprises one or more dispersant-viscosity index improver compounds and an additive amount of one or more additional polyhydric alcohol esters; and a method of lubricating an internal combustion engine comprising applying said lubricating oil composition thereto.Type: ApplicationFiled: February 21, 2007Publication date: November 13, 2008Inventors: Takashi Fujitsu, Joanna Griffiths
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Publication number: 20080269382Abstract: The invention describes a process for stabilizing an organic material against oxidative, thermal or light-induced degradation, which comprises incorporating therein or applying thereto at least a compound of the formula (I) wherein the general symbols are as defined in claim 1. The compounds of the formula I are especially useful as processing stabilizers for synthetic polymers.Type: ApplicationFiled: August 22, 2005Publication date: October 30, 2008Inventors: Michele Gerster, Dietmar Mader, Bruno Rotzinger
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Publication number: 20080222946Abstract: A diesel fuel composition comprising diesel fuel, triglycerides of vegetable origin and an oxygenate material exhibits good engine emissions, improved lubricity and no deterioration in engine performance.Type: ApplicationFiled: March 15, 2007Publication date: September 18, 2008Inventor: Glen M. Snower
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Publication number: 20080119377Abstract: The lubricant compositions of the present disclosure comprises a base oil and an additive composition comprising, for example, a detergent and an additive chosen from a phosphorus-containing compound, a friction modifier, and a dispersant, wherein the additive composition exhibits at least one of reduced thin-film friction and increased fuel efficiency as compared to an additive composition that is devoid of the detergent and the additive. As a further example, the additive composition can comprise a friction modifier and a dispersant, wherein the additive composition exhibits at least one of reduced thin-film friction and increased fuel efficiency as compared to an additive composition that is devoid of the friction modifier and the dispersant. Methods of using the additive and lubricant compositions are also disclosed.Type: ApplicationFiled: November 22, 2006Publication date: May 22, 2008Inventors: Mark T. DEVLIN, Tze-chi Jao
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Publication number: 20080081773Abstract: Provided is a method of inhibiting the formation of emulsions in a natural gas dehydrator by lubricating the upstream compressors and natural gas engines with a lubricating oil comprising an effective amount of one or more demulsifiers. Provided is also a method of lubricating the upstream compressors and natural gas engines with the same oil compositions.Type: ApplicationFiled: September 28, 2006Publication date: April 3, 2008Inventor: John D. Palazzotto
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Patent number: 7332461Abstract: A lubricant composition for metal forming and cutting has at least one compound of the formula (I): R1—(AO)n—OOC—(CH2)m—Ph—(R2)p where R1 is a C1 to C15 alkyl group AO is an alkyleneoxy group which may vary along the (poly) alkylenoxy chain; n is 0 or from 1 to 100; m is 0, 1 or 2; and Ph is a phenly group, which may be substituted with groups (R2)p; where each R2 is independently an alkyl, halogen, haloalky or alkoxy group; and p is 0 or from 1 to 3. The lubricant composition also includes at least one lubricant additive selected from the group consisting of an organic ester additive, a polyalkylene glycol additive, a sulphur-containing synthetic additive, a sulphur-containing oleochemical additive, a suiphonate, a phosphorus-containing additive and a chlorinated paraffin additive. Also described are a method of using the lubricant composition in metal forming and cutting applications and the use of the lubricant composition in metal forming and cutting applications.Type: GrantFiled: August 14, 2003Date of Patent: February 19, 2008Assignee: Croda International PLCInventor: John Eastwood
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Publication number: 20070265176Abstract: A lubricating composition is provided that has good elastomer compatibility and friction-reduced properties which comprises a base oil having a viscosity index (VI) greater than about 80, a kinematic viscosity (Kv) of 100° C. of from about 2 mm2/s, containing 90 wt % or more saturates, having less than about 5 ppm sulfur, and wherein the base oil is derived from a waxy feed; and a minor amount of (a) a polyol ester of an aliphatic carboxylic acid having 12 to 24 carbon atoms and (b) an oil soluble or oil dispersible molybdenum compound.Type: ApplicationFiled: May 7, 2007Publication date: November 15, 2007Inventors: Marc-Andre Poirier, Douglas E. Deckman
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Patent number: 7285519Abstract: Petroleum additive formulations include a petroleum additive dissolved in a carrier fluid including at least one compound of the formula (I): (R2)p-Ph-(CH2)m—COO—(AO)n—R1 where; R1 is C1 to C10 alkyl; AO is alkyleneoxy; n is 0 or from 1 to 100; m is 0, 1 or 2; and Ph is a phenyl group, which may be substituted with groups (R2)p; where each R2 is independently C1 to C4 alkyl or alkoxy; and p is 0, 1 or 2. Further, crude petroleum or petroleum refinery streams can be treated by adding a petroleum additive dissolved in a carrier fluid of the formula (I) to the product stream. Desirably the carrier fluid is or includes iso-propyl benzoate and/or 2-ethyl hexyl benzoate.Type: GrantFiled: May 24, 2002Date of Patent: October 23, 2007Assignee: Croda International PlcInventors: Terence Cox, Neil Grainger, Edward George Scovell
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Patent number: 7285516Abstract: Lubricating oils containing an additive formulation including at least one sulphonate, saligenin and salixarate detergent provide improved wear performance and decreased sulphur and phosphorus emissions.Type: GrantFiled: November 25, 2002Date of Patent: October 23, 2007Assignee: The Lubrizol CorporationInventors: Virginia A. Carrick, William D. Abraham, Gordon D. Lamb, R. Ian Wilby, James P Roski
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Patent number: 7256162Abstract: Esters formed from polyol, C12-C28 branched chain fatty acid, and/or C12-C28 cyclic fatty acid are useful as a friction modifier for lubricants. Monomer is a preferred source for these fatty acids.Type: GrantFiled: September 26, 2003Date of Patent: August 14, 2007Assignee: Arizona Chemical CompanyInventors: Charley M. Pollock, Lloyd A. Nelson
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Patent number: 6852678Abstract: An aqueous lubricant is provided which by simple application onto metal surfaces forms lubricating films required for heavy working of metals, and which contains no oil. The aqueous lubricant is prepared by suspending or dispersing a metal chelate compound in water with a surfactant or the like. The metal chelate compound has a polydentate or multidentate chelate ligand, in which at least one of the coordinating atoms is sulfur, coordinated to the coordination site of at least one metal species selected from among zinc, manganese, iron, molybdenum, tin and antimony. When applied onto metal surfaces, the aqueous lubricant forms effective lubricating films on the metal surfaces. The lubricating films contain sulfur as coordinating atoms and therefore, extreme pressure produces sulfur radicals through decomposition by tribo-chemical reactions. The sulfur radicals are highly reactive and react rapidly with the metal surface to produce metal sulfides with a lubricating effect.Type: GrantFiled: November 19, 2001Date of Patent: February 8, 2005Assignees: MEC International Corporation, Toyota Jidosha Kabushiki KaishaInventors: Heijiro Ojima, Masahiko Takeuchi, Fumio Ikesue, Noritoshi Kaskimura, Fumio Kawahara, Mitsuru Tomono
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Patent number: 6849583Abstract: A lubricant composition containing an anti-deposition component having an anti-deposition effect which is especially useful for the lubrication of refrigeration compressors and in reducing or removal of unwanted deposits in constricted areas in a refrigeration system.Type: GrantFiled: July 26, 2001Date of Patent: February 1, 2005Assignee: Imperial Chemical Industries PlcInventors: Stuart Corr, Steven James Randles, Peter Timothy Gibb
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Patent number: 6844298Abstract: The present invention relates to a water-soluble aluminium and aluminium alloys hot rolling composition comprising a base stock oil and, based on the total weight of the composition, from 1 to 80% by weight of a combination of: a monoester of a fatty acid with a polyol and a tetraester of a fatty acid with pentaerythritol; the weight monoester:tetraester ratio of said combination ranging from 1:20 to 10:1. The invention also relates to an oil-in-water emulsion, to a hot rolling process and to the use of the oil-in-water emulsion in a hot rolling process.Type: GrantFiled: February 7, 2001Date of Patent: January 18, 2005Assignee: Mobil Oil FrancaiseInventors: Francis Prince, Jean-Yves Henri Claire
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Lubricating oil composition comprising borated and EC-treated succinimides and phenolic antioxidants
Patent number: 6784142Abstract: An additive package comprising one or more borated dispersants, one or more EC-treated dispersants, and one or more phenolic antioxidants; a lubricating oil composition comprising said additive package; and a method of controlling bearing corrosion and valve train wear using said lubricating oil.Type: GrantFiled: February 14, 2003Date of Patent: August 31, 2004Assignees: Chevron Oronite Company LLC, Chevron Oronite Technology B.V.Inventors: Willem Van Dam, Peter Kleijwegt -
Patent number: 6759374Abstract: The present invention provides a composition for cutting or abrasive working operations that comprises at least one lubricious additive and at least one hydrofluorocarbons. The present invention also provides a method for cutting or abrasive working.Type: GrantFiled: September 19, 2001Date of Patent: July 6, 2004Assignee: 3M Innovative Properties CompanyInventors: Dean S. Milbrath, Mark W. Grenfell
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Patent number: 6753300Abstract: A lubricant sheet for making a hole used for a printed circuit board, comprising an organic substance layer having a thickness of 0.02 to 3.0 mm and formed of a mixture (a) or a mixture (b) and a metal foil having a thickness of 0.05 to 0.5 mm, said organic substance layer being formed on one surface of said metal foil, said mixture (a) being a mixture containing polyether ester (I), a solid water-soluble lubricant (II) and polyethylene glycol (III) having a number average molecular weight of 200 to 600, and said mixture (b) being a mixture containing said polyether ester (I), said solid water-soluble lubricant (II) and a liquid water-soluble lubricant (IV), and a method of making a hole which uses the lubricant sheet.Type: GrantFiled: September 4, 2001Date of Patent: June 22, 2004Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Mitsuo Eziri, Shinya Komatsu, Masaru Taguchi, Norio Nagai
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Patent number: 6750185Abstract: The invention provides a lubricant oil composition useful for reduction in friction loss and improvement in fuel economy in internal combustion engines, particularly, a lubricant oil composition for internal combustion engines exhibiting an excellent friction reducing effect even in a diesel engine equipped with EGR accompanied with an increase in soot content in oil. The invention is a lubricant composition for internal combustion engines comprising a lubricant base oil consisting of a mineral oil and/or synthetic oil or the like incorporated with 1 wt % or more, based on the total weight of the lubricant oil composition, a nonionic surfactant with alkylene oxide added thereto consisting of at least one compound having an HLB value of 15 or more and a molecular weight of 900 or more, and a friction reducing method for internal combustion engines using this lubricant oil composition.Type: GrantFiled: March 29, 2002Date of Patent: June 15, 2004Assignee: TonenGeneral Sekiyu K.K.Inventors: Sonmin Ryu, Shuzo Nemoto, Satoshi Ogano
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Patent number: 6750184Abstract: The present invention relates to improved lubricant compositions highly resistant to oxidative degradation comprising selected 5-tert.-butyl-4hydroxy-3-methylphenyl substituted fatty acid esters, diphenylamines and zinc dithiophosphates. The compositions as defined above are characterized by superior antioxidative properties. This can be demonstrated in various standard tests such as Deposit and Oxidation Panel Test (DOPT) and Pressurized Differential Scanning Calorimetry (PDSC).Type: GrantFiled: September 19, 2001Date of Patent: June 15, 2004Assignee: Ciba Specialty Chemicals CorporationInventors: Marc Ribeaud, Paul Dubs, Serge Laemlin
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Patent number: 6734150Abstract: This invention relates to a lubricating oil composition comprising a base stock and an antioxidant comprising an oil soluble trinuclear organomolybdenum compound of the generic formula: Mo3Sx—(Q) (1) wherein x is from 4 to 10 and Q is a core group, which may be a ligand, and at least one other compound selected from a phenolic and an aminic compound wherein the basestock has a kinematic viscosity at 100° C. (KV100) from about 2 cSt to 20 cSt (2×10−6 to 20×10−6 m2/sec) and a saturates content of at least 85%. The composition has a high oxidation stability, reduced deposit formation and is capable of giving rise to good fuel economy improvement.Type: GrantFiled: November 12, 2002Date of Patent: May 11, 2004Assignee: ExxonMobil Research and Engineering CompanyInventors: Jason Zhisheng Gao, Christopher John May, Jeffrey Robert Torkelson, Paul Simon Woolley
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Patent number: 6727207Abstract: The present invention is to provide a rolling bearing suitable for the use under a high temperature, high speed, high load and high vibration condition, having a good rust-preventive performance and the excellent flaking life without a hazard to a human body. A rolling bearing is described, comprising an inner race, an outer race and rolling elements, with a grease composition comprising, as the main components, a base oil, a thickener and at least one kind of a rust-preventive additive made from a naphthenate or a succinic acid derivative, packed in a bearing space formed by at least the inner race, the outer race and the rolling elements, said at least one kind of a rust-preventive additive is present in an amount of 0.1 to 10% by weight based on the total amount of the grease composition.Type: GrantFiled: January 3, 2002Date of Patent: April 27, 2004Assignee: NSK Ltd.Inventors: Kenichi Iso, Atsushi Yokouchi, Michiharu Naka
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Patent number: 6723685Abstract: A lubricating oil composition comprising a) an oil of lubricating viscosity having a viscosity index of at least 95; b) at least one calcium detergent; c) at least one oil soluble molybdenum compound; d) at least one organic ashless nitrogen-free friction modifier; and e) at least one metal dihydrocarbyldithiophosphate compound, the composition having a Noack volatility of about 15 wt. % or less, from 0.05 to 0.6 wt. % calcium from the calcium detergent, molybdenum in an amount of at least 10 ppm from the molybdenum compound, and phosphorus from the metal dihydrocarbyldithiophosphate compound in an amount up to about 0.1 wt. %.Type: GrantFiled: April 5, 2002Date of Patent: April 20, 2004Assignee: Infineum International Ltd.Inventors: Rolfe J. Hartley, Malcolm Waddoups
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Patent number: 6692654Abstract: Refrigerating machine oils comprising an ester oil for use with a refrigerant containing carbon dioxide are described. The refrigerating machine oils have excellent lubricity, miscibility with a refrigerant, stability and electric insulation.Type: GrantFiled: February 28, 2002Date of Patent: February 17, 2004Assignee: Nippon Mitsubishi Oil CorporationInventors: Tomomasa Osumi, Hiroyuki Hirano, Yasuyuki Watanabe
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Patent number: 6689726Abstract: Lubricating oil formulations comprising base oil, sulfur-phosphorous anti-wear/extreme pressure agent and hindered phenol antioxidant, which combination of extreme pressure agent and hindered phenol antioxidant produces crystals and containing antioxidants, wherein the base oil is characterized as having a saturates content of 99 wt % or more is stabilized against crystal formation by the addition of a minor amount of high molecular weigh di- or polycarboxylic acid, or anhydride and an ester.Type: GrantFiled: June 17, 2002Date of Patent: February 10, 2004Assignee: ExxonMobil Research and Engineering CompanyInventor: David Gary Lawton Holt
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Publication number: 20040014615Abstract: This invention relates to a lubricating oil composition comprising a base stock and an antioxidant comprising an oil soluble trinuclear organomolybdenum compound of the generic formula: Mo3Sx-(Q) (I) wherein x is from 4 to 10 and Q is a core group, which may be a ligand, and at least one other compound selected from a phenolic and an aminic compound wherein the basestock has a kinematic viscosity at 100° C. (KV100) from about 2 cSt to 20 cSt (2×10−6 to 20×10−6 m2/sec) and a saturates content of at least 85%. The composition has a high oxidation stability, reduced deposit formation and is capable of giving rise to good fuel economy improvement.Type: ApplicationFiled: November 12, 2002Publication date: January 22, 2004Inventors: Jason Zhisheng Gao, Christopher John May, Jeffery Robert Torkelson, Paul Simon Woolley
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Publication number: 20030232729Abstract: Cooling lubricant (concentrate or solution) comprising a cooling lubricant base based on mineral and/or synthetic oil and preservative comprising (a) one or more 1- or 2-(C3 to C24 alkyl) glyceryl ethers.Type: ApplicationFiled: May 30, 2003Publication date: December 18, 2003Inventors: Wolfgang Beilfuss, Ralf Gradtke, Wolfgang Siegert, Karl-Heinz Diehl, Klaus Weber
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Patent number: 6642191Abstract: A lubricating oil comprising a major amount of at least one of Group II, III, and IV base oil and a minor amount of 3,5-di-t-butyl 4-hydroxy phenol propionate. A method of making this lubricating oil and a method of lubricating a natural gas engine with this lubricating oil.Type: GrantFiled: November 29, 2001Date of Patent: November 4, 2003Assignee: Chevron Oronite Company LLCInventors: John D. Palazzotto, Mark R. Logan
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Publication number: 20030199399Abstract: A lubricating oil composition comprising a) an oil of lubricating viscosity having a viscosity index of at least 95; b) at least one calcium detergent; c) at least one oil soluble molybdenum compound; d) at least one organic ashless nitrogen-free friction modifier; and e) at least one metal dihydrocarbyldithiophosphate compound, the composition having a Noack volatility of about 15 wt. % or less, from 0.05 to 0.6 wt. % calcium from the calcium detergent, molybdenum in an amount of at least 10 ppm from the molybdenum compound, and phosphorus from the metal dihydrocarbyldithiophosphate compound in an amount up to about 0.1 wt. %.Type: ApplicationFiled: April 5, 2002Publication date: October 23, 2003Inventors: Rolfe J. Hartley, Malcolm Waddoups