Polycyclo Ring System Which Contains The Hetero Ring As One Of The Cyclos (e.g., Alkyl Benzotriazoles, Etc.) Patents (Class 508/280)
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Publication number: 20080287328Abstract: There is disclosed a lubricant composition comprising major amount of a base oil and a minor amount of an additive composition comprising (i) a triazole compound substituted with an aryl moiety; (ii) at least one nitrogen containing compound chosen from an alkylated phenothiazine and a compound represented by the formula (I): wherein R0, R1 and R2 are each independently selected from the group consisting of an aryl moiety comprising from about 6 to about 30 carbon atoms, hydrogen, halogen, hydroxy, hydrocarbyl substituted hydrocarbyl, amino, amido, phosphoro, and sulfono, with the proviso that at least one of R0, R1 and R2 are chosen to be an aryl moiety comprising from about 6 to about 30 carbon atoms; ana (iii) a metal detergent with a soap/TBN ratio ranging from about 0.05 to about 1.5.Type: ApplicationFiled: May 16, 2007Publication date: November 20, 2008Inventors: John T. Loper, Paul G. Griffin, Naresh C. Mathur, David A. Hutchison
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Publication number: 20080234151Abstract: Provided is a lubricating oil composition for sizing excellent in machinability and rust preventing properties. A lubricating oil composition for sizing, including (A) a lubricating base oil having a kinematic viscosity of 0.5 to 150 mm2/s at 40° C., and compounded therein (B) as an extreme-pressure and rust preventing agent, a high basic Casulfonate in an amount of 5 to 80% by mass, (C) as a rust preventing agent, a neutral Ba sulfonate and/or a fatty acid ester of a polyhydric alcohol in an amount of 0.5 to 30% by mass, (D) as a metal deactivator, a benzotriazole compound and/or thiadiazole compound in an amount of 0.005 to 10% by mass, and (E) an anti-oxidizing agent in an amount of 0.05 to 10% by mass, each based on a total amount of the composition.Type: ApplicationFiled: March 30, 2005Publication date: September 25, 2008Applicant: IDEMITSU LOSAN CO., LTD.Inventor: Masato Kaneko
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Publication number: 20080194440Abstract: This invention relates to lubricating oil additives, and to lubricating oil compositions, their method of preparation, and use. More specifically, this invention relates to several novel lubricating oil additives and compositions which contain a tungsten compound and an antioxidant, namely aminic antioxidants such as a secondary diarylamine or an alkylated phenothiazine. The use of the tungsten compound with the secondary diarylamine and/or the alkylated phenothiazine provides improved oxidation and deposit control to lubricating oil compositions. The lubricating oil compositions of this invention are particularly useful as crankcase and transmission lubricants, gear oils and other high performance lubricant applications.Type: ApplicationFiled: April 3, 2008Publication date: August 14, 2008Inventors: Ramanathan Ravichandran, Farouk Abi-Karam, Alena Yermolenka, Michel Hourani, Ingo Roehrs
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Publication number: 20080171680Abstract: A composition of a water-soluble metalworking fluid used in metal machining is formed by adding 5 to 70 wt % additive to 5 to 95 wt % distillation residues that is generated in production of biodiesel and used as lubricating base oil, and 0 to 70 wt % ion exchange water.Type: ApplicationFiled: October 16, 2007Publication date: July 17, 2008Inventors: Kwang Soon Kim, Jae Min Cha
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Publication number: 20080139428Abstract: There is disclosed a lubricant composition comprising a major amount of a base oil; and a minor amount of a synergistic additive composition comprising: (i) a triazole compound substituted with an aryl moiety, with the proviso that the triazole compound is not an alkyl bis-3-amino-1,2,4-triazole; and (ii) a nitrogen-containing compound represented by the formula: wherein R1 and R2 are each independently selected from the group consisting of at least one aryl moiety comprising from about 6 to about 30 carbon atoms, hydrogen, halogen, hydroxy, hydrocarbyl, substituted hydrocarbyl, amino, amido, phosphoro, and sulfono.Type: ApplicationFiled: December 11, 2006Publication date: June 12, 2008Inventors: David A. Hutchison, Robert T. Dittmeier
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Patent number: 7385880Abstract: A grease composition for a precision instrument comprising a lithium soap grease or a urea grease, and an anti-wear agent, wherein the lithium soap grease and the urea grease are each a grease having no hydroxyl group in a molecule, and the anti-wear agent is contained in an amount of 0.1 to 20% by weight based on the total amount of the grease composition. By the use of the grease composition for a sliding mechanism of a precision instrument such as a watch, an appropriate slip torque can be obtained, and the precision instrument such as a watch can operate stably.Type: GrantFiled: August 19, 2003Date of Patent: June 10, 2008Assignee: Citizen Holdings Co., Ltd.Inventor: Yuji Akao
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Rolling bearing, rolling bearing for fuel cell, compressor for fuel cell system and fuel cell system
Patent number: 7265080Abstract: The rolling bearing of the invention to be incorporated in the compressor for fuel cell system comprises a fluorine-based grease containing a fluororesin and a fluorine-based oil, a urea grease containing a urea compound and a synthetic oil or a lithium complex grease containing a lithium complex and a synthetic oil encapsulated therein. In this arrangement, the grease deterioration of the rolling bearing incorporated in the compressor for force-feeding various fluids between machines can be prevented, making it possible to provide a fuel cell system which can maintain stable operation over an extended period of time.Type: GrantFiled: May 20, 2003Date of Patent: September 4, 2007Assignee: NSK Ltd.Inventors: Kenichi Iso, Hirotoshi Miyajima, Katsuaki Denpou, Yujiro Toda, Masahiko Yamazaki, Michiharu Naka, Yasunobu Fujita -
Patent number: 7214648Abstract: An engine lubricant formulated as a complete crankcase motor oil or additive concentrate composed of a combination of chemical constituents including a base oil selected from a synthetic oil, a mineral oil or semi-synthetic base oil (hydrogenated oil) or combination thereof, an oil soluble molybdenum additive, a dispersant inhibitor containing zinc dithiophosphate, and viscosity index improvers and one or more seal swelling agents to lubricate the engine and recondition the seals of new and/or high mileage engines. Addition of a polyalphaolefin and/or one or more esters such as a diester or polyolester may also be utilized therein. The lubricant may be formulated as a complete engine oil crankcase lubricant, or concentrated into an additive for addition to conventional mineral oil based engine oil, synthetic engine oils, or blends thereof in an effective amount of up to 30 percent volume percent, typically from 20 to 25 percent by volume.Type: GrantFiled: July 29, 2002Date of Patent: May 8, 2007Assignee: Ashland Licensing and Intellectual Property, LLCInventors: Mandeep S. Saini, Thomas R. Smith, Michael A. Dituro, Richard J. Baumgart, Frances E. Lockwood
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Patent number: 7018959Abstract: A water-based, recyclable metalworking fluid comprises a polyalkylene glycol, an alkanolamine, a polyglycol surfactant, a polyol surfactant, a biocide and a corrosion inhibitor. The biocide may comprise a mixture of biocidal compounds effective against bacterial and fungal organisms. The material may also include an isoalkoxy amine oxide and a glycol ether. The composition may also include ancillary ingredients such as viscosity controlling agents, defoamers, coloring agents and the like. It is a notable feature of the composition of the present invention that it is free of hazardous materials and fatty acids. Also disclosed is a method for using the composition in a metal-shaping operation.Type: GrantFiled: October 29, 2003Date of Patent: March 28, 2006Assignees: Miller Environmental, Miller Oil of Indiana, Inc., Masco CorporationInventors: Anthony A. McCullough, John M. Noble, Phillip B. Simon, Ross Darren Smith, Scott P. Riggle, Douglas E. Doles
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Patent number: 6919300Abstract: A protective lubricating composition is provided which will penetrate readily to closely fitting frictional parts and form a protective non-migrating lubricating film improving lubrication between the moving parts reducing friction and wear and preventing corrosion. The lubricant composition may be combined with solvents and propellants to make a sprayable lubricant composition.Type: GrantFiled: July 2, 2002Date of Patent: July 19, 2005Assignee: Ashland Inc.Inventors: Michael A. Dituro, Richard J. Baumgart, Mandeep S. Saini, Christopher J. Nonevski
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Patent number: 6875730Abstract: A lubricant for a refrigerator using ammonia as the refrigerant, which contains an additive selected from antioxidant, anti-wear additive and metal deactivator, and the polyether compound represented by the following general formula (1) or (2): X{—O—(AO)n—H}p??(1) X{—O—(AO1)a—(AO2)b—H}p??(2)Type: GrantFiled: January 19, 2001Date of Patent: April 5, 2005Assignees: Asahi Denka Kogyo K.K., Japan Energy CorporationInventors: Takashi Kaimai, Hitoshi Takahashi, Goro Yamamoto, Kimiyoshi Namiwa, Ayako Saneyoshi
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Patent number: 6858567Abstract: The first lubricating oil composition of the invention comprises a polyol ester (A) as a base oil, a specific amount of a viscosity index improver (B) and a specific amount of an anti-wear agent (C), and the second lubricating oil composition of the invention comprises a paraffinic hydrocarbon oil (F) having at least 30 carbon atoms and a specific amount of a viscosity index improver (B), so that these compositions exert effects that they enable a life of watch battery to last long, they enable a watch to operate in the temperature range of ?30 to 80° C. with one kind of a lubricating oil, and they are free from change of properties over a long period of time.Type: GrantFiled: February 8, 2001Date of Patent: February 22, 2005Assignee: Citizen Watch Co., Ltd.Inventor: Yuji Akao
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Publication number: 20040259743Abstract: The present invention relates to a lubricating oil composition containing: (1) an antiwear package comprising: (a) a hydrocarbyl phosphate and amine salt thereof; and (b) an alkylene coupled adduct of a hydrocarbyl substituted dithiophosphoric acid and a &agr;,&bgr;-unsaturated carbonyl containing compound; (2) an antioxidant package comprising: (a) a hydrocarbyl diphenylamine; and (b) a sterically hindered phenol; (3) a metal deactivator; and (4) an oil of lubricating viscosity. The invention further relates to the process to make the lubricating oil composition and its use in industrial fluids especially hydraulic fluids.Type: ApplicationFiled: June 18, 2003Publication date: December 23, 2004Applicant: The Lubrizol Corporation, a corporation of the State of OhioInventor: Betsy J. Butke
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Patent number: 6800595Abstract: A grease composition having a base oil and a thickener, which grease additionally has from 0.05% to 30% by weight of sodium thiosulphate and at least 0.1% by weight of one or more additives selected from the group of: calcium salicylate, magnesium salicylate, calcium phenate, and calcium sulphonate, based on the total grease composition, and use of the grease composition to improve rust prevention and abrasion resistance. The invention also relates to a method for preparing the grease composition.Type: GrantFiled: February 10, 2003Date of Patent: October 5, 2004Assignee: Shell Oil CompanyInventors: Takahiro Ozaki, Noriaki Shinoda, Kouichi Nakazawa
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Patent number: 6774092Abstract: Disclosed is an additive composition that can be mixed with various types of basic oils to produce a lubricant that can meet the international standards of manual truck gearbox oils. A preferred embodiment includes various quantities of an isobutylene sulfide, zinc dialklydithiophosate and other components. Component properties of the additive composition are selected to produce a lubricant that has good thermal stability, rust-resisting and endurance qualities and that has a low cost of use and production.Type: GrantFiled: August 16, 2002Date of Patent: August 10, 2004Assignee: PetroChina Company, Ltd.Inventors: Xisheng Fu, Xiuling Hua
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Publication number: 20040116306Abstract: Hydraulic fluids, in particular brake fluids for motor vehicles, having improved corrosion protection, comprisingType: ApplicationFiled: September 4, 2003Publication date: June 17, 2004Inventors: Bernd Wenderoth, Michael Roida, Bayram Aydin, Uwe Fidorra
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Publication number: 20040092408Abstract: A grease for rock bit lubrication and other high temperature bearing applications is provided comprising a high viscosity index polyalphaolefin synthetic base fluid in combination with an alkylated naphthalene base fluid.Type: ApplicationFiled: October 30, 2003Publication date: May 13, 2004Applicant: Tomlin Scientific, Inc.Inventors: Thomas F. Willey, Ryan J. Willey, Scott T. Willey
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Publication number: 20040072701Abstract: The present invention relates to a lubricant composition exhibiting enhanced load-carrying capacity and oxidative/corrosion stability. The lubricant composition of the present invention comprises a major portion of an aliphatic ester base oil having lubrication properties and formed by the reaction of pentaerythritol and an organic carboxylic acid. The lubricant composition further comprises 3-(di-isobutoxy-thiophosphonylsulfanyl)-2-methyl-propionic acid (DITMPA) as an additive comprising from about 0.01 to about 0.40 weight percent of the fully formulated lubricating oil composition as well as yellow metal passivator comprising from about 0.01 to about 0.40 weight percent of the fully formulated lubricating oil composition. The enhanced load-carrying capacity and oxidative/corrosion stability of lubricant compositions containing DITMPA and yellow metal passivator is achieved without deleteriously affecting other salient properties of the lubricant.Type: ApplicationFiled: August 21, 2003Publication date: April 15, 2004Inventors: Patrick E. Godici, David G. V. Jones, Kim E. Fyfe
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Publication number: 20040067858Abstract: The object of the present invention is to provide a lubricant which is of non-pollution and substitutable for conventional lubricants and which is excellent in lubrication characteristics, particularly low frictional characteristics. According to the present invention, the lubricant comprises an aqueous solution containing a saccharide in an amount of 0.5-30% by mass based on the total amount of the aqueous solution and the reminder of water (pure water), said saccharide comprising mainly a sucrose and a disaccharide caramel in an amount of 0.2-20% by mass based on the amount of the sucrose. As the sucrose, granulated sugar or crystal sugar is preferred, and coffee sugar containing previously a disaccharide caramel can also be used. More preferably, the lubricant contains sodium laurate and/or potassium laurate in an amount of 0.001-1% by mass. Furthermore, it is desired that the lubricant contains potassium sorbate in an amount of 0.Type: ApplicationFiled: October 6, 2003Publication date: April 8, 2004Applicant: DAIDO METAL COMPANY LTD.Inventors: Koue Ohkawa, Katuyosi Mizojiri, Nobukatu Kimura, Takayuki Shibayama
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Patent number: 6669872Abstract: An electrical oil having reduced gassing tendency includes a major amount of a paraffinic or naphthenic basestock and a blend of certain hindered phenols, especially a blend of 2,6-di-t-butyl phenol and 2,6-di-t-butyl cresol. A further enhanced gassing tendency can be provided to the electrical oil by including a tolyltriazole derivative.Type: GrantFiled: July 13, 2001Date of Patent: December 30, 2003Assignee: ExxonMobil Research and Engineering CompanyInventors: Christopher Jeffrey Still Kent, Jacob B. Angelo
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Patent number: 6649574Abstract: A biodegradable lubricating oil composition especially useful as a gear oil employs a synthetic alcohol ester basestock formed from mono- and dipentaerythritol with certain mono- and dicarboxylic acids or dicarboxylic acid anhydrides and an effective amount of a polyoxyalkylene alcohol demulsifying agent, a combination of alkylated organic acid and ashless succinimide rust inhibitors and an ashless dithiocarbamate antiwear and extreme pressure agent.Type: GrantFiled: October 8, 2002Date of Patent: November 18, 2003Assignee: ExxonMobil Research and Engineering CompanyInventors: Angeline Baird Cardis, Susan Ardito
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Publication number: 20030176295Abstract: A grease composition comprising a base oil and a thickener, which grease additionally comprises from 0.05% to 30% by weight of sodium thiosulphate and at least 0.1% by weight of one or more additives (A) selected from the group comprising calcium salicylate, magnesium salicylate, calcium phenate and/or calcium sulphonate, based on the total grease composition; use of said grease composition to improve rust prevention and abrasion resistance, and a method for preparing said grease composition.Type: ApplicationFiled: February 10, 2003Publication date: September 18, 2003Inventors: Takahiro Ozaki, Noriaki Shinoda, Kouichi Nakazawa
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Publication number: 20030125218Abstract: A biodegradable lubricating oil composition especially useful as a gear oil employs a synthetic alcohol ester basestock formed from mono- and dipentaerythritol with certain mono- and dicarboxylic acids or dicarboxylic acid anhydrides and an effective amount of a polyoxyalkylene alcohol demulsifying agent, a combination of alkylated organic acid and ashless succinimide rust inhibitors and an ashless dithiocarbamate antiwear and extreme pressure agent.Type: ApplicationFiled: October 8, 2002Publication date: July 3, 2003Inventors: Angeline Baird Cardis, Susan Ardito
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Publication number: 20030119682Abstract: An engine lubricant formulated as a complete crankcase motor oil or additive concentrate composed of a combination of chemical constituents including a base oil selected from a synthetic oil, a mineral oil or semi-synthetic base oil (hydrogenated oil) or combination thereof, an oil soluble molybdenum additive, a dispersant inhibitor containing zinc dithiophosphate, and viscosity index improvers and one or more seal swelling agents to lubricate the engine and recondition the seals of new and/or high mileage engines. Addition of a polyalphaolefin and/or one or more esters such as a diester or polyolester may also be utilized therein. The lubricant may be formulated as a complete engine oil crankcase lubricant, or concentrated into an additive for addition to conventional mineral oil based engine oil, synthetic engine oils, or blends thereof in an effective amount of up to 30 percent volume percent, typically from 20 to 25 percent by volume.Type: ApplicationFiled: July 29, 2002Publication date: June 26, 2003Applicant: ASHLAND INC.Inventors: Mandeep S. Saini, Thomas R. Smith, Michael A. Dituro, Richard J. Baumgart, Frances E. Lockwood
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Publication number: 20030087770Abstract: Emulsifier system containing a) ethoxylates/propoxylates of fatty alcohols with 8 to 18 C atoms in the alcohol with 2 to 6 ethylene oxide units and 4 to 8 propylene oxide units, b) fatty alcohols and/or fatty alcohol propoxylates with 12 to 24 C atoms in the alcohol and 0 to 3 propylene oxide units and/or distillation residue of these fatty alcohols and c) phosphates, selected from: c1) mono- and/or diesters of phosphoric acid with alkanols with 10-20 C atoms, c2) mono- and/or diesters of phosphoric acid with ethoxylated and/or propoxylated alkanols with 10-20 C atoms and/or c3) phosphates of polyethylene glycol ethers and/or polypropylene glycol ethers, and the water-soluble salts of each of these, in a weight ratio a:b:c=1:0.3:0.1 to 1:4:1; anti-corrosive and emulsifier system with these components, emulsion concentrate with these components, oil-in-water emulsion obtainable therefrom and use thereof as a cleaning, anti-corrosive and low-temperature lubricant emulsion.Type: ApplicationFiled: October 31, 2002Publication date: May 8, 2003Inventors: Hans-Peter Oelscher, Juergen Geke
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Patent number: 6558569Abstract: Low viscosity functional fluid compositions particularly useful as brake fluids in anti-lock brake systems comprising a borate ester component, an alkoxy glycol component and an additive package which includes a corrosion inhibitor.Type: GrantFiled: November 10, 2000Date of Patent: May 6, 2003Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Tammy Tyler Shannon, Brian Terry Keen, James Leonard Hansen, Pearl Lesley Crossen
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Patent number: 6548457Abstract: The present invention provides a lubricant for a compression type refrigeration system using ammonia as a refrigerant, which comprises polyether compounds and aromatic amine compounds or phenothiazine compounds, and preferably further comprises alcohol compounds such as polyhydric alcohol partial ether and/or benzotriazole compounds. Further, the present invention provides a working fluid composition comprising the lubricant and an ammonia refrigerant, and a refrigeration system which is filled with the working fluid composition. The lubricant has not only good compatibility with ammonia, but excellent stability and lubricating property, and therefore can suitably used in a compression type refrigeration system using an ammonia refrigerant that does not have the possibility of ozone layer depletion and global warming phenomenon.Type: GrantFiled: January 17, 2001Date of Patent: April 15, 2003Assignee: Japan Energy CorporationInventors: Takashi Kaimai, Hitoshi Takahashi
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Publication number: 20030050197Abstract: The first lubricating oil composition of the invention comprises a polyol ester (A) as a base oil, a specific amount of a viscosity index improver (B) and a specific amount of an anti-wear agent (C), and the second lubricating oil composition of the invention comprises a paraffinic hydrocarbon oil (F) having at least 30 carbon atoms and a specific amount of a viscosity index improver (B), so that these compositions exert effects that they enable a life of watch battery to last long, they enable a watch to operate in the temperature range of −30 to 80° C. with one kind of a lubricating oil, and they are free from change of properties over a long period of time.Type: ApplicationFiled: October 9, 2001Publication date: March 13, 2003Inventor: Yuji Akao
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Publication number: 20030045436Abstract: Disclosed is an additive composition that can be mixed with various types of basic oils to produce a lubricant that can meet the international standards of manual truck gearbox oils. A preferred embodiment includes various quantities of an isobutylene sulfide, zinc dialklydithiophosate and other components. Component properties of the additive composition are selected to produce a lubricant that has good thermal stability, rust-resisting and endurance qualities and that has a low cost of use and production.Type: ApplicationFiled: August 16, 2002Publication date: March 6, 2003Inventors: Xisheng Fu, Xiuling Hua
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Publication number: 20030027729Abstract: To provide a lubricant which is excellent in the compatibility with ammonia and also has excellent practical performance such as good stability and lubricity.Type: ApplicationFiled: July 9, 2002Publication date: February 6, 2003Inventors: Takashi Kaimai, Hitoshi Takahashi, Goro Yamamoto, Kimiyoshi Namiwa, Ayako Saneyoshi
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Patent number: 6436881Abstract: Improved synthetic lubricants based on a 100% polyol ester composition suitable for use in high temperature static chain oil applications is provided. The lubricant includes a base stock based on a polyol ester that is the reaction product of a neopentyl polyol including a major proportion of dipentaerythritol and a mixture of C5 to C12 carboxylic acids. The preferred carboxylic acid mixture includes heptanoic (C7) acid, caprylic/capric (C8-10) acid and isononanoic (3, 5, 5-trimethylhyxanoic acid (iso-C9). The polyol base stock is mixed with an additive package that includes a viscosity index improver (tackifier), antioxidants, extreme pressure/antiwear agents and a corrosion inhibitor. The additive package may be added in up to about 20 percent by weight of the lubricant to provide a viscosity of the lubricant at 40° C. of at least about 275 cSt and at 100° C. of no less than about 25.0 cSt.Type: GrantFiled: June 1, 2001Date of Patent: August 20, 2002Assignee: Hatco CorporationInventors: Michael A. McHenry, Dale D. Carr, Jeffrey A. Hutter
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Publication number: 20020006878Abstract: A composition of an antioxidant of the formula 1Type: ApplicationFiled: January 16, 2001Publication date: January 17, 2002Applicant: Lubrizol CorporationInventors: William D. Abraham, Paul E. Adams, Gordon D. Lamb, Thomas J. Wolak, Richard A. Denis, Jody A. Kocsis, James P. Roski, Virginia A. Carrick, Susan V. Cowling
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Patent number: 6315920Abstract: An electrical oil having reduced gassing tendency includes a major amount of a paraffinic or naphthenic basestock and a blend of certain hindered phenols, especially a blend of 2,6-di-t-butyl phenol and 2,6-di-t-butyl cresol. A further enhanced gassing tendency can be provided to the electrical oil by including a tolyltriazole derivative.Type: GrantFiled: September 10, 1999Date of Patent: November 13, 2001Assignee: Exxon Research and Engineering CompanyInventors: Christopher Jeffrey Still Kent, Jacob B. Angelo
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Patent number: 6214776Abstract: An oil composition useful as a high stress electrical oil and especially as a transformer load tap changer oil is provided. The composition comprises a major amount of a paraffinic oil having a low viscosity of less than about 20 cSt @ 40° C. and an effective amount of an additive system including at least one hindered phenolic antioxidant and a benzotriazole metal deactivator.Type: GrantFiled: May 21, 1999Date of Patent: April 10, 2001Assignee: Exxon Research and Engineering CompanyInventors: Jacob B. Angelo, Christopher Jeffrey Still Kent, Frederick Michael Gragg
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Patent number: 6191078Abstract: An aviation piston engine lubricant having no metal containing additive is provided. The lubricant contains (a) a base oil consisting essentially of a mixture of (i) at least about 50 wt % based on the total weight of the lubricant of one or more mineral oils having a viscosity in the range of about 5 cSt to about 25 cSt at 100° C. and (ii) about 15 to about 40 wt % based on the total weight of the lubricant of a polyalpha olefin fluid having a viscosity in the range of about 4 cSt to about 40 cSt at 100° C.; (b) at least about 3 wt % based on the total weight of the lubricant of an ashless polyisobutylene succinic anhydride/polyamine (PIBSA/PAM) dispersant; and (c) an effective amount of one or more ashless additives selected from the group consisting of antiwear agents, extreme pressure agents, metal passivators, and antioxidants.Type: GrantFiled: September 21, 1999Date of Patent: February 20, 2001Assignee: ExxonMobil Research and Engineering CompanyInventors: Antika Shlomo, Frederick W. Girshick, Patrick Edward Godici, Richard A. Skillman
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Patent number: 6121209Abstract: The invention provides synergistic combinations of phosphorus acid-containing compounds with ashless antioxidants. These combinations dramatically improve the oxidation stability of lubricating compositions, particularly power transmission fluids such as automatic transmission fluids.Type: GrantFiled: June 4, 1997Date of Patent: September 19, 2000Assignee: Exxon Chemical Patents INCInventors: Raymond Frederick Watts, Ricardo Alfredo Bloch
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Patent number: 6083889Abstract: An oil composition useful as an electrical or transformer oil is provided. The composition comprises a major amount of a paraffinic oil having a Cleveland open cup flash point of more than about 200.degree. C. and an effective amount of an additive system including at least one hindered phenolic antioxidant and a tolyltriazole metal deactivator.Type: GrantFiled: February 5, 1999Date of Patent: July 4, 2000Assignee: Exxon Research and Engineering CompanyInventors: Jacob Ben Angelo, Christopher Jeffrey Still Kent
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Patent number: 6074992Abstract: Functional fluids comprising at least one compound selected from the group consisting of a glycol, a glycol ether, an ester, a hydrocarbon, and mixtures thereof and an effective amount of benzotriazole, a derivative thereof such as tolyltriazole or mixtures thereof and 1,2,4-triazole, a derivative thereof or mixtures thereof. The functional fluids exhibit increased resistance to corrosion and reduced sediment formation and are useful as brake fluids.Type: GrantFiled: February 2, 1999Date of Patent: June 13, 2000Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventor: Pierre Levesque
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Patent number: 6048825Abstract: A lubricant composition suitable as a helicopter transmission lubricant comprises a synthetic base stock of viscosity in the range 5.0 to 10.0 cSt at 100.degree. C., an antioxidant component, a neutral organic phosphate component, a dicarboxylic acid component, a monocarboxylic acid component, a triazole component and a phosphorus containing extreme pressure additive.Type: GrantFiled: March 3, 1999Date of Patent: April 11, 2000Assignee: Castrol LimitedInventors: Andrew J. Markson, John W. A. Pragnell, Mark A. Edwards
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Patent number: 5955403Abstract: A sulfur free lubricating composition comprises a major portion of a synthetic base lubricating oil and a minor portion of a tri(alkyl phenyl) phosphate or di(alkylphenyl)phosphoric acid antiwear agent, an amine antioxidant a substituted succinamide rust inhibitor and a tolytriazole. The tri(alkylphenyl)phosphate antiwear agent is incorporated in the oil in an amount ranging between about 0.1 to 2.0 wt % and the amine antioxidant in amount ranging from about 0.1 to 5 wt %. The succinamide is present in an amount ranging from about 0.01 to 0.5 wt % and the tolytriazole, from about 0.01 to 0.5 wt %. In the foregoing, the wt % is based on the weight of oil.Type: GrantFiled: March 24, 1998Date of Patent: September 21, 1999Assignee: Exxon Research and Engineering CompanyInventor: Chung-Lai Wong
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Patent number: 5681797Abstract: An oxidatively stable, biodegradable lubricant composition is disclosed which comprises(A) a hydrogenated polyisoprene prepared by polymerizing isoprene such that polyisoprene is obtained wherein there are from 4 to 1000 isoprene units and hydrogenating the polyisoprene to obtain a hydrogenated polysoprene containing a residual olefinic unsaturation of not more than 10 percent based upon the unsaturation content prior to hydrogenation; and(B) at least one performance additive selected from the group consisting of(1) an alkyl phenol;(2) an ether;(3) a mono- or di-substituted glyceride;(4) a phosphorus derivative;(5) a benzotriazole;(6) a phosphorus amine salt;(7) a trihydrocarbyl phosphorothionate;(8) an aromatic amine;(9) a zinc salt;(10) a pour point depressant ester;(11) a hydrogenated block copolymer; and(12) an acrylate polymer.Type: GrantFiled: February 29, 1996Date of Patent: October 28, 1997Assignee: The Lubrizol CorporationInventor: Saurabh S. Lawate
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Patent number: 5681506Abstract: A corrosion inhibiting lubricating composition comprises:(a) a synthetic ester base stock;(b) at least one aromatic amine antioxidant;(c) a neutral organic phosphate of the formula (R.sup.1 O).sub.3 PO where R.sup.1 is a tolyl, phenyl, xylyl, alkyl or cycloalkyl group, the alkyl or cycloalkyl group having up to 10 carbon atoms;(d) a saturated or unsaturated dicarboxylic acid of the general formula ##STR1## wherein x+y+z is an integer in the range from 2 to 22 inclusive and where at least one of the groups R.sub.1 to R.sub.5 is a carboxylic acid group; or a dicarboxylic acid of one of the three formulae ##STR2## (e) a straight or branched chain saturated or unsaturated monocarboxylic acid which is optionally sulphurised or an ester of such an acid; and(f) a triazole of the formula: ##STR3## or a triazole selected from 1,2,4 triazole, 1,2,3 triazole, 5-anilo-1,2,3,4-thiatriazole, 3-amino-1,2,4 triazole, 1-H-benzotriazole-1-yl-methylisocyanide, methylene-bis-benzotriazole and naphthotriazole.Type: GrantFiled: May 9, 1994Date of Patent: October 28, 1997Assignee: Castrol LimitedInventors: John William Anthony Pragnell, Andrew Jonathan Markson, Mark Anthony Edwards
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Patent number: 5622922Abstract: A homogenous product is formed by heating at a temperature in the range of from 50.degree. to 150.degree. C. a mixture of a benzotriazole and a 2,5-dihydrocarbyldithio-1,3,4-thiadiazole.Type: GrantFiled: December 27, 1995Date of Patent: April 22, 1997Assignee: Exxon Chemical Patents Inc.Inventors: Dean B. Clarke, Dale R. Carroll
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Patent number: 5531912Abstract: A stearate free solid lubricant for cold working of metals contains approximately equal amounts of an alkene-acrylate ionomer and an alkoxylated alcohol in which the alcohol moiety has from 18-60 carbon atoms and the alkoxylate block has about the same number of carbon atoms. This lubricant can be conveniently applied from aqueous solution/suspension and works effectively even when the underlying steel surface has no conversion coating, which is usually required with stearate lubricants for best results.Type: GrantFiled: September 2, 1994Date of Patent: July 2, 1996Assignee: Henkel CorporationInventors: Richard J. Church, Kenneth J. Hacias