The Chalcogen And The Carbon Of The -c(=o)o- Group Are Bonded To A Single Benzene Ring (e.g., Salicylic Acid Salts, Etc.) Patents (Class 508/518)
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Publication number: 20080257803Abstract: A lubricant additive gel formed by the gellation of two or more lubricant additives for the slow release of the additive components into a fluid. The lubricant additive gel slowly releases into its component lubricant additives when contacted with the fluid such as an oil thereby serving as a lubricant fluid such as an oil thereby.Type: ApplicationFiled: May 28, 2008Publication date: October 23, 2008Applicant: The Lubrizol CorporationInventors: James D. Burrington, Bruce H. Grasser, Herman F. George, John R. Martin, John K. Pudelski, James P. Roski, Barbara L. Soukup, Melinda E. Bartlett
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Publication number: 20080194439Abstract: A non-chlorine type lubricant in which a sulfur type extreme pressure additive, an organic zinc compound, a calcium type additive, and an ester compound are blended with a base oil for the lubricant, and having a kinetic viscosity from 5 to 50 mm2/s at 40° C.Type: ApplicationFiled: February 1, 2008Publication date: August 14, 2008Applicant: TOYOTA BOSHOKU KABUSHIKI KAISHAInventors: Mami KATO, Teruo FUKAYA
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Publication number: 20080139424Abstract: The present invention provides a lubricating oil composition which has excellent anti-wear properties for a metal pulley and a metal belt and initial anti-shudder properties and can retain the anti-shudder properties for a long period of time, suitable for use in a continuously variable transmission with a slip-controlled wet clutch and a metal belt. The lubricating oil composition comprises a lubricating base oil, (A) an alkylsalicylic acid metal salt and/or an (overbased) basic salt thereof, wherein the component ratio of the monoalkylsalicylic acid metal salt is from 85 to 100 percent by mole, the component ratio of the dialkylsalicylic acid metal salt is from 0 to 15 percent by mole and the component ratio of the 3-alkylsalicylic acid metal salt is from 40 to 100 percent by mole; (B) a specific nitrogen compound; and (C) a phosphorus-containing anti-wear agent.Type: ApplicationFiled: February 6, 2008Publication date: June 12, 2008Applicant: NIPPON OIL CORPORATIONInventors: Hitoshi KOMATSUBARA, Shigeki MATSUI
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Patent number: 7371710Abstract: Lubricating oil compositions particularly suitable for automatic transmissions comprising a lubricating base oil, (A) a boron-containing ashless dispersant in an amount of 0.02 to 0.1 percent by mass in terms of boron, based on the total mass of the composition, (B) an alkaline earth metal-based detergent with a base number of 0 to 500 mgKOH/g in an amount of 0.01 percent by mass or more in terms of alkaline earth metal, based on the total mass of the composition, and (C) an alkali metal borate or a hydrate thereof and having excellent anti-wear properties and improved fatigue life by inhibiting pitching.Type: GrantFiled: March 10, 2004Date of Patent: May 13, 2008Assignee: Nippon Oil CorporationInventor: Eitaro Morita
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Publication number: 20080108531Abstract: The present invention relates to the use of viscosity modifiers in a control release additive gel. Furthermore, the present invention relates to an additive gel containing a viscosity modifier that control releases additives into a lubricant.Type: ApplicationFiled: November 8, 2006Publication date: May 8, 2008Applicant: The Lubrizol CorporationInventors: James D. Burrington, Barbara P. Leffel
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Patent number: 7358217Abstract: Quenching oil compositions comprising (1) an oil having kinematic viscosity (ASTM Test Method D-445) at 40° C. ranging from about 4 to about 45 mm2sec?1 (about 40 to about 210 Saybolt Universal Seconds (SUS)) and having a saturated content from about 80% to about 100%; and (2) an alkali metal salt of saligenin derivative and optionally, further comprising at least one of (3) an aliphatic polyolefin having Mn ranging from about 300 to about 10,000; (4) at least one member selected from the group consisting of metal salts of hydrocarbyl substituted phenols, salicylic acids, carboxylic acids, and sulfonic acids; and (5) at least one member selected from the group consisting of hydrocarbyl substituted succinic esters, amides, ester-amides, imides, amine salts, acid-esters, acid-amides ester-amine salts, amide-amine-salts and acid-amine salts, and methods of heat treating metals comprising employing said quenching oils.Type: GrantFiled: December 16, 2002Date of Patent: April 15, 2008Assignee: The Lubrizol CorporationInventors: William R. Sweet, Sanjay Kalhan
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Publication number: 20080015130Abstract: A lubricant composition comprising a detergent and a base oil comprising less than about 3% by weight of tetracycloparaffins is disclosed. Methods of making and using the composition are also disclosed.Type: ApplicationFiled: July 14, 2006Publication date: January 17, 2008Inventors: Mark T. Devlin, Tze-chi Jao
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Patent number: 7163911Abstract: The present invention provides a novel unsulfurized, carboxylate-containing additive for lubricating oils, comprising a mixture of alkaline earth metal salts (hydrocarbyl phenate/hydrocarbyl salicylate) and a reduced amount of unreacted hydrocarbyl phenols, as well as additive packages, concentrates and finished oil compositions comprising the same. Specifically, it relates to additives comprising said mixture in which said hydrocarbyl salicylate is primarily single-aromatic-ring hydrocarbyl salicylate. The invention also provides a method for producing said additive.Type: GrantFiled: May 22, 2003Date of Patent: January 16, 2007Assignees: Chevron Oronite Company LLC, Cherov Oronite Technology B.V.Inventors: Cornelius Hendrikus Boons, Eugene Spala, Willem Van Dam
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Patent number: 7148186Abstract: The present invention provides a lubricant oil composition, having enhanced wear-preventive characteristics for a diesel engine operating with large quantities of soot in the oil (soot content: 0.2 to 4.0 wt. %), and is especially suitable for a pressure-accumulating (common rail) type diesel engine equipped with an EGR system. The lubricant oil composition containing a base oil composed of a mineral and/or synthetic oil incorporated with at least three additives that are a sulfurized oxymolybdenum dithiocarbamate at 0.03 to 0.50 wt. % as Mo; a zinc dialkyl dithiophosphate at 0.04 to 0.50 wt. % as P; and at least one metallic salt of alkyl salicylate selected from the group consisting of a Ca salt of alkyl salicylate at 0.004 to 1.0 wt. % as Ca, Mg salt of alkyl salicylate at 0.002 to 0.60 wt. % as Mg, and Zn salt of alkyl salicylate at 0.006 to 1.60 wt. % as Zn, all percentages being based on the whole composition.Type: GrantFiled: March 7, 2003Date of Patent: December 12, 2006Assignee: TonenGeneral Sekiyu K.K.Inventors: Toshiaki Kuribayashi, Nobuchika Kawagoishi, Satoshi Ogano
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Patent number: 7026273Abstract: A crankcase lubricating oil composition comprises an oil of lubricating viscosity, in a major amount, and, in respective minor amounts, a boron-containing additive and one or more co-additives, wherein the lubricating oil composition has greater than 200 ppm by mass of boron, less than 600 ppm by mass of phosphorus and less than 4000 ppm by mass of sulfur, based on the mass of the oil composition. Such compositions demonstrate provide improved wear performance.Type: GrantFiled: October 22, 2002Date of Patent: April 11, 2006Assignee: Infineum International LimitedInventors: Robert Robson, Roger W. Glyde, Alisdair J. Brown, Simon S. M. Chung, Stephen Arrowsmith
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Patent number: 6869919Abstract: Soot induced kinematic viscosity increase of lubricating oil compositions for diesel engines equipped with EGR systems can be ameliorated by selection of viscosity modifier, lubricating oil flow improvers, detergents and/or dispersants.Type: GrantFiled: September 10, 2002Date of Patent: March 22, 2005Assignee: Infineum International Ltd.Inventors: Andrew J. D. Ritchie, Jai G. Bansal, Jacob Emert, Glen P. Fetterman, Antonio Gutierrez, Matthew D. Irving, Christopher J. Locke, Michael T. Minotti
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Patent number: 6828286Abstract: Lubricant compositions comprises a lubricant base oil and one or more compounds resulting the modification of a succinimide represented by formula (1) or (2) wherein R1 and R2 may be the same or different and are each independently a hydrocarbon group having 8 to 30 carbon atoms, R3 and R4 may be the same or different and are each independently a hydrocarbon group having 1 to 4 carbon atoms, R5 is hydrogen or a hydrocarbon group having 1 to 30 carbon atoms, n is an integer from 1 to 7. The lubricant compositions have a long-lasting anti-shudder property, an enhanced transmission capacity for a wet clutch, and an excellent shifting property.Type: GrantFiled: April 10, 2003Date of Patent: December 7, 2004Assignee: Nippon Mitsubishi Oil CorporationInventors: Kenichi Komiya, Naozumi Arimoto, Noboru Ishida, Shinichi Shirahama, Eitaro Morita
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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: 6784143Abstract: The use, in a minor amount, of a detergent composition comprising one or more metal detergents which comprises metal salts of organic acids, wherein the detergent composition comprises more than 50 mole %, based on the moles of the metal salts of organic acids in the detergent composition, of: (I) a metal salt of an aromatic carboxylic acid, or (II) a metal salt of a phenol, or (III) both a metal salt of an aromatic carboxylic acid and a metal salt of a phenol, in a lubricating oil composition for improving the oxidation resistance of the lubricating oil composition, wherein the amount of phosphorus and sulfur in the oil composition is less than 0.09 mass % and at most 0.5 mass % respectively, based on the mass of the oil composition. It has also been found that a detergent composition comprising more than 50 mole % of a metal salt of an aromatic carboxylic acid improves the reduction in wear in an engine.Type: GrantFiled: May 9, 2002Date of Patent: August 31, 2004Assignee: Infineum International Ltd.Inventors: Christopher J. Locke, Mark G. Stevens, Peter Wrench, Stephen Arrowsmith, Rebecca C. Castle, Jane R. Galsworthy
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Patent number: 6764982Abstract: This invention relates to a lubricating oil composition, comprising: (A) a base oil; and a phosphorus-containing compound represented by the formulae wherein in Formulae (B-I) and (B-II), R1, R2 and R3 are independently hydrogen or hydrocarbyl groups, and a, b and c are independently zero or 1; the lubricating oil composition being characterized by a sulfur content of about 0.01 to about 0.25% by weight.Type: GrantFiled: January 31, 2002Date of Patent: July 20, 2004Assignee: The Lubrizol CorporationInventors: Ewa A. Bardasz, Virginia A. Carrick, William D. Abraham, Gordon D. Lamb
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Publication number: 20040127371Abstract: A lubricating oil composition for use in an internal combustion engine operated with a fuel having a sulphur content of less than 50 ppm, that contains a minor amount of at least one metal-containing detergent, which lubricating oil composition, when formulated for use in a diesel engine has a total ash content of less than 1.0 wt. %, and when formulated for use in a gasoline engine has a total ash content of less than 0.7 wt. %.Type: ApplicationFiled: August 27, 2003Publication date: July 1, 2004Inventors: Stephen Arrowsmith, Alisdair J. Brown
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Patent number: 6750183Abstract: Lubricating oil compositions providing superior soot dispersing characteristics, which contain a combination of a high molecular weight dispersant and a soot dispersant comprising a linked aromatic oligomer.Type: GrantFiled: December 22, 2000Date of Patent: June 15, 2004Assignee: Infineum International Ltd.Inventors: Antonio Gutierrez, Ricardo A. Bloch, Nancy Z. Diggs, Fredrick W. Girschick, David J. Martella, Mark G. Stevens, Jacob Emert
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Patent number: 6743757Abstract: A dispersant that is a reaction product of a polyalkenyl-substituted mono- or dicarboxylic acid, anhydride or ester; and a polyamine, wherein the reaction product has from greater than about 1.3 to less than about 1.7 mono- or di-carboxylic acid producing moieties per polyalkenyl moiety, and the polyalkenyl moiety has a number average molecular weight of at least about 1800, and a molecular weight distribution (Mw/Mn) of from about 1.5 to about 2.0.Type: GrantFiled: December 6, 2001Date of Patent: June 1, 2004Assignee: Infineum International Ltd.Inventors: Ian A. W. Bell, Jacob Emert, Raymond Fellows, Antonio Gutierrez, Robert Robson
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Patent number: 6734148Abstract: A boron-containing dispersant composition containing one or more dispersants that are the reaction product of a polyalkenyl-substituted mono- or dicarboxylic acid, anhydride or ester; and a polyamine, in which at least one of the dispersants has a polyalkenyl moiety with a number average molecular weight of at least about 1800, and from greater than about 1.3 to about 1.7 mono- or di-carboxylic acid producing moieties per polyalkenyl moiety; and in which a ratio of wt. % of boron to wt. % of nitrogen (B/N) for the dispersant composition is from about 0.05 to about 0.24.Type: GrantFiled: December 6, 2001Date of Patent: May 11, 2004Assignee: Infineum International Ltd.Inventors: Ian A. W. Bell, Jacob Emert, Raymond Fellows, Antonio Gutierrez, Robert Robson
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Patent number: 6720294Abstract: A lubricating oil composition comprising, as a detergent, metal salt of a long chain hydrocarbyl-substituted organic acid, at a concentration of not more than 15 mmol/kg oil.Type: GrantFiled: April 27, 1999Date of Patent: April 13, 2004Assignee: Infineum USA L.P.Inventors: Malcolm Willars, Peter Sant
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Publication number: 20030195126Abstract: A lubricant additive composition comprising (a) a carboxylated detergent-dispersant obtained by (i) neutralizing alkylphenols using an alkaline earth base in the presence of at least one carboxylic acid that contains from one to four carbon atoms but in the absence of alkali base, dialcohol, and monoalcohol, forming an intermediate product, then (ii) carboxylating the intermediate product using carbon dioxide so that at least 20 mole percent of the original alkylphenol starting material has been converted to single aromatic-ring hydrocarbyl salicylate; and (b) an overbased, non-sulfonate-containing detergent such as, for instance, a hydrocarbyl phenate-carboxylate; a medium overbased salicylate having a total base number of about 50 to 170; a high overbased salicylate having a total base number greater than 170; or an overbased sulfurized hydrocarbyl phenate of alkaline earth metals; and combinations and mixtures thereof.Type: ApplicationFiled: April 12, 2002Publication date: October 16, 2003Inventor: Cornelis Hendrikus Maria Boons
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Publication number: 20030148897Abstract: A boron-containing dispersant composition containing one or more dispersants that are the reaction product of a polyalkenyl-substituted mono- or dicarboxylic acid, anhydride or ester; and a polyamine, in which at least one of the dispersants has a polyalkenyl moiety with a number average molecular weight of at least about 1800, and from greater than about 1.3 to about 1.7 mono- or di-carboxylic acid producing moieties per polyalkenyl moiety; and in which a ratio of wt. % of boron to wt. % of nitrogen (B/N) for the dispersant composition is from about 0.05 to about 0.24.Type: ApplicationFiled: December 6, 2001Publication date: August 7, 2003Inventors: Ian A. W. Bell, Jacob Emert, Raymond Fellows, Antonio Gutierrez, Robert Robson
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Publication number: 20030148898Abstract: A dispersant that is a reaction product of a polyalkenyl-substituted mono- or dicarboxylic acid, anhydride or ester; and a polyamine, wherein the reaction product has from greater than about 1.3 to less than about 1.7 mono- or di-carboxylic acid producing moieties per polyalkenyl moiety, and the polyalkenyl moiety has a number average molecular weight of at least about 1800, and a molecular weight distribution (Mw/Mn) of from about 1.5 to about 2.0.Type: ApplicationFiled: December 6, 2001Publication date: August 7, 2003Inventors: Ian A. W. Bell, Jacob Emert, Raymond Fellows, Antonio Gutierrez, Robert Robson
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Patent number: 6596674Abstract: The invention is a liquid composition of matter useful as a metal working lubricant. The composition comprises a primary lubricity component, such as a polyether or polyether ester, and dissolved salts of carboxylic acids. The composition preferably contains not more than 0.2 percent of any element except carbon, hydrogen, oxygen, alkaline earth metals, alkali metals, inorganically bonded halogens, inorganically bonded nitrogen, inorganically bonded sulfur, and inorganically bonded phosphorus.Type: GrantFiled: February 27, 2001Date of Patent: July 22, 2003Assignee: Henkel CorporationInventor: Frank K. Botz
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Patent number: 6583092Abstract: This invention relates to a lubricating oil composition, comprising: (A) a base oil; (B) an alkali or alkaline earth metal salt of a saligenin derivative; (C) an alkali or alkaline earth metal salt of a hydrocarbon-substituted salicylic acid, and (D) a metal salt of a phosphorus-containing compound.Type: GrantFiled: September 12, 2001Date of Patent: June 24, 2003Assignee: The Lubrizol CorporationInventors: Virginia A. Carrick, Gordon D. Lamb, Ewa A. Bardasz, William D. Abraham
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Patent number: 6525006Abstract: A lubricant composition comprises (1) at least one member selected from the group consisting of carboxylic acid compounds each obtained by the addition of an oxyalkylene group to a hydroxyl group of a hydroxy carboxylic acid and alkali metal salts and amine salts thereof; and (2) at least one base oil selected from the group consisting of alkyl benzene, normal paraffin, isoparaffin and &agr;-olefin. The lubricant composition is highly resistant to putrefaction when it is used as a metal-processing oil composition and shows excellent cutting characteristics in the metal-processing, which requires an extremely high lubricating action, such as form-rolling tap and deep hole boring. Moreover, the composition makes operations such as metal-processing operations easy since the liquid obtained by diluting it with water is transparent or translucent.Type: GrantFiled: February 22, 2002Date of Patent: February 25, 2003Inventors: Yoshiyuki Yoneta, Atsuya Ueda, Kazuyoshi Takeda
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Patent number: 6482778Abstract: Transmission fluid compositions comprising a zinc detergent and at least one phosphorus-containing additive have enhanced performance capabilities. The use of the zinc detergent and the phosphorus-containing additive provide transmission fluids that exhibit high steel-on-steel coefficients of friction, particularly useful in continuously variable transmissions (CVT).Type: GrantFiled: August 11, 1999Date of Patent: November 19, 2002Assignee: Ethyl CorporationInventors: Samuel H. Tersigni, Sanjay Srinivasan, David L. Strait
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Patent number: 6465399Abstract: The present invention is a lubricant composition, composed of a lubricant base oil containing: a (poly)glyceryl ether represented by the following general formula (1) (wherein R1 represents a hydrocarbon group and n represents a numeral being 1 or more.), as a (A) component; and an alkaline-earth metal salt of an organic acid as a (B) component. Furthermore, it is preferable to contain an antioxidant as a (C) component. As an alkaline-earth metal salt of an organic acid, sulfonate, phenate, or salicylate are preferable, and neutral, basic or overbased calcium salicylate or calcium sulfonate are particularly preferable.Type: GrantFiled: January 30, 2001Date of Patent: October 15, 2002Assignee: Asahi Denka Koygo Kabushiki KaishaInventors: Naomi Koishikawa, Yukio Tatsumi
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Patent number: 6407043Abstract: Greases having low noise properties are prepared by cycling kettle contents, during at least the initial stage of soap-forming or other thickening, round a processing loop comprising (i) agitation and heating and (ii) shearing. Lithium complex greases are referred to which have lower noise properties than a polyurea type grease.Type: GrantFiled: October 13, 2000Date of Patent: June 18, 2002Assignee: ExxonMobil Research and Engineering CompanyInventor: Soenke Moehr
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Patent number: 6391833Abstract: A low sulfur detergency additive suitable for lubricant composition used in air-cooled two-stroke cycle engines having an unsulfurized alkaline earth alkylsalicylate and optionally a molybdenum compound.Type: GrantFiled: April 21, 1999Date of Patent: May 21, 2002Assignee: Chevron Chemical S.A.Inventors: Frank Ilmain, Sumanth Addagarla, Jacques Cazin
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Publication number: 20020055444Abstract: A low sulfur detergency additive suitable for lubricant composition used in air-cooled two-stroke cycle engines having an unsulfurized alkaline earth alkylsalicylate and optionally a molybdenum compound.Type: ApplicationFiled: April 21, 1999Publication date: May 9, 2002Inventors: FRANK ILMAIN, SUMANTH ADDAGARLA, JACQUES CAZIN
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Patent number: 6340659Abstract: Lubricants which comprise, as an additive a salt of the reaction product of (i) glyoxylic acid or a hydrocarbyl substituted glyoxylic acid and (ii) a hydroxyaromatic compound, at least a portion of the molecules of which are alkyl-substituted, are useful for lubricating ceramic-containing engines, high temperature engines, and natural gas-fueled engines. Particularly useful additives are those in which the hydroxyaromatic compound is a dialkyl phenol containing a t-butyl group in an ortho position.Type: GrantFiled: December 13, 1995Date of Patent: January 22, 2002Assignee: The Lubrizol CorporationInventors: Jody A. Kocsis, Sheri L. Blystone, Ewa A. Bardasz, Marvin B. DeTar
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Patent number: 6329328Abstract: The present invention provides for a lubricant oil composition for internal combustion engines for automobiles with enhanced friction loss reduction and is especially suitable for a pressure-accumulating (common rail) type diesel engine equipped with an EGR system. The lubricant oil composition contains a base oil composed of a mineral and/or synthetic oil incorporated with at least four additives of (A) at least one type of organomolybdenum compound selected from the group consisting of sulfurized oxymolybdenum dithiocarbamate, sulfurized oxymolybdenum dithiophosphate, molybdenum phosphate and molybdenum-amine complex at 0.01 to 0.20 wt. % as Mo, (B) zinc dialkyl dithiophosphate at 0.01 to 0.50 wt. % as P, (C) one of Ca and Mg salts of alkyl salicylate at 0.05 to 1.0 wt. % as Ca or Mg and (D) Zn salt of alkyl salicylate at 0.005 to 0.2 wt.Type: GrantFiled: May 30, 2000Date of Patent: December 11, 2001Assignee: Tonen General Sekiyu K. K.Inventors: Katsuya Koganei, Satoshi Ogano, Toshiaki Kuribayashi
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Patent number: 6310010Abstract: Concentrates for lubricating oil compositions are prepared by mixing at elevated temperature: (i) at least one high molecular weight ashless dispersant; (ii) at least one oil-soluble overbased metal detergent; and (iii) at least one surface-active agent comprising a low molecular weight hydroxyl or amine group.Type: GrantFiled: April 9, 1999Date of Patent: October 30, 2001Assignee: Exxon Chemicals Patents INCInventors: Gary Higton, Jacob Emert, Robert A. Wilkinson, Isabel P. MacDonald, Karl J. Van Driesen, Salvatore Rea, James P. Stokes, Andrew J. D. Ritchie
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Publication number: 20010012821Abstract: The present invention is a lubricant composition, composed of a lubricant base oil containing: a (poly)glyceryl ether represented by the following general formula (1) 1Type: ApplicationFiled: January 30, 2001Publication date: August 9, 2001Inventors: Naomi Koishikawa, Yukio Tatsumi
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Patent number: 6262001Abstract: An unsulfurized, alkali metal-free, detergent-dispersant composition having from 40% to 60% alkylphenol, from 10% to 40% alkaline earth alkylphenate, and from 20% to 40% alkaline earth single aromatic-ring alkylsalicylate. This composition may have an alkaline earth double aromatic-ring alkylsalicylate as long as the mole ratio of single-ring alkylsalicylate to double aromatic-ring alkylsalicylate is at least 8:1. This composition may be produced by the three-step process involving neutralization of alkylphenols, carboxylation of the resulting alkylphenate, and filtration of the product of the carboxylation step.Type: GrantFiled: October 26, 2000Date of Patent: July 17, 2001Assignee: Chevron Chemical Company LLCInventors: Jean-Louis Marie Le Coent, Jacques Cazin, Pierre Tequi
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Patent number: 6235688Abstract: Non-thixotropic, sodium-free lubricant additive having from 10% to 50% of a liquid organic diluent and from 30% to 90% of a substituted hydrocarbaryl metal salt. At least 30 mole percent of the metal in the metal salt is lithium, and the salt is essentially free of sodium. The BN of the non-thixotropic lubricant additive attributable to the lithium is less than 150. This additive is useful for decreasing black sludge deposits and piston deposits.Type: GrantFiled: September 24, 1997Date of Patent: May 22, 2001Assignee: Chevron Chemical Company LLCInventors: Vernon R. Small, Jean-Louis Le Coent, Gerrit J. Polhaar, Ita Suharti Suwandi, William Woodford Willis, Jr.
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Patent number: 6214778Abstract: A grease composition comprising a major amount of an oil of lubricating viscosity; a thickener selected from the group consisting of monoureas, diureas, triureas and polyureas, or mixtures thereof; and an oil soluble neutral or overbased zinc salt of a carboxylic acid selected from the group consisting of zinc salts of fatty acids, the zinc salts of hydrocarbyl-substituted salicylic acids, and zinc glyoxylates is disclosed.Type: GrantFiled: August 8, 2000Date of Patent: April 10, 2001Assignee: The Lubrizol CorporationInventor: Patricia R. Todd
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Patent number: 6140282Abstract: A long life lubricating oil as evidenced by a reduction in viscosity increase, oxidation and nitration, comprises a major amount of a base oil of lubricating viscosity and a minor amount of a mixture of high TBN, medium TBN and low/neutral TBN detergents wherein metal salicylate detergent is at least one of the medium or low/neutral TBN detergents.Type: GrantFiled: December 15, 1999Date of Patent: October 31, 2000Assignee: ExxonMobil Research and Engineering CompanyInventors: Stanley James Cartwright, James Walter Finch
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Patent number: 6140281Abstract: A lubricating oil of enhanced life as evidenced by a reduction in viscosity increase, nitration, and TBN depletion and equivalent or improved oxidation and TAN increase performance relative to commercial oils comprises a major amount of a base oil of lubricating viscosity and a minor amount of a mixture of one or more metal sulfonate(s) and/or phenate(s) and one or more metal salicylate(s) detergents, all such detergents used in the mixture being of the same or substantially similar Total Base Number (TBN).Type: GrantFiled: December 15, 1999Date of Patent: October 31, 2000Assignee: ExxonMobil Research and Engineering CompanyInventors: Alan Gary Blahey, James Walter Finch, Stanley James Cartwright
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Patent number: 6140279Abstract: Concentrates for lubricating oil compositions are prepared by mixing at elevated temperature:(i) at least one high molecular weight ashless dispersant;(ii) at least one oil-soluble overbased metal detergent; and (iii) at least one other concentrate additive provided that the additive is first mixed with the detergent or the dispersant.Type: GrantFiled: April 9, 1999Date of Patent: October 31, 2000Assignee: Exxon Chemical Patents IncInventors: Jacob Emert, Isabel P. MacDonald
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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: 5922656Abstract: The lubricant composition of the present invention can be used in automatic transmissions and contains 0.05 to 2% of a metallic salt of organic acid (component (A)), such as calcium sulfonate, 0.15 to 4% of a specific polyamide compound (component (B)) and 0.05 to 1.5% of acid phosphate or acid phosphite ester (component (C)) which are added to a lubricant base oil, wherein all percentages are by weight in the total lubricant composition. The lubricant composition for automatic transmissions can show high anti-shudder property, high anti-shudder durability for an extended period, high property of preventing clogging of the friction material, and sufficient transmission torque capacity, while retaining the lubricant characteristic requirements for use in automatic transmissions.Type: GrantFiled: March 23, 1998Date of Patent: July 13, 1999Assignees: Tonen Corporation, Toyota Jidosha Kabushiki KaishaInventors: Narihiko Yoshimura, Takanori Kugimiya, Takanori Nakada, Fumio Ueda, Yasushi Ando
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Patent number: 5900392Abstract: An aqueous belt lubricant composition comprising water and from 1.0 to 10 wt % of at least a fatty alkyl propylene tetramine, from 1.0 to 10 wt % of at least a fatty alcohol polygylcol ether, all percentages are based on the total weight of the aqueous belt lubricant composition, and at least one acid in an amount sufficient to establish a pH value between about 5.0 and about 7.0. The composition may further comprising one or more of alkoxylated fatty alkyl monoamines, alkoxylated fatty alkyl diamines and/or a solutizer.Type: GrantFiled: July 24, 1998Date of Patent: May 4, 1999Assignee: Loeffler Chemical CorporationInventor: Laut Bernhard
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Patent number: 5895777Abstract: A petroleum additive having excellent storage stability and heat stability, which comprises an alkaline earth metal salt of aromatic hydroxycarboxylic acid containing a higher aliphatic carboxylic acid, a higher aliphatic amine or a higher aliphatic amide, or a sulfurized mixture thereof. A process for improving storage stability, heat stability and viscosity character of the petroleum additive.Type: GrantFiled: December 6, 1996Date of Patent: April 20, 1999Assignees: Cosmo Research Institute, Cosmo Oil Co., Ltd.Inventors: Sanae Ueda, Shinji Yamaoka, Jun Imai
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Patent number: 5856280Abstract: The present invention resides in a turbo oil composition exhibiting enhanced antioxidancy and resistance to deposit formation, and to a method for achieving that result in turbo oils. The gas turbine lubricating oil of the present invention comprises a major proportion of synthetic polyol ester based base stock including diesters and polyol esters, preferably polyol ester based base stock and a minor proportion of an antioxidant/deposit control additive, specifically a sulfur-containing carboxylic acid (SCCA) derivative. Other conventional additives such as extreme pressure, pour point reduction, oxidative stability, anti-foaming, hydrolytic stability, improved viscosity index performance, anti-wear, and corrosion inhibitor additives and others may also be employed. The use of SCCA derivative produces a turbo oil exhibiting markedly superior oxidation stability and deposit control performance compared to that exhibited by turbo oil without the SCCA derivative.Type: GrantFiled: February 4, 1997Date of Patent: January 5, 1999Assignee: Exxon Research and Engineering CompanyInventors: Jeenok T. Kim, Patrick Edward Godici, Paul Joseph Berlowitz, Morton Beltzer
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Patent number: 5827805Abstract: Compositions represented by the structures ##STR1## where Ar represents an aromatic group, each R is independently a hydrocarbyl group, at least one R having more than 12 carbon atoms, a is 1 to 4, and R' is hydrogen or alkyl, are useful as lubricant and fuel additives and as intermediates for the preparation of derivatives useful as such additives.Type: GrantFiled: February 29, 1996Date of Patent: October 27, 1998Assignee: The Lubrizol CorporationInventors: Paul E. Adams, Bryan A. Grisso, Mark R. Baker
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Patent number: 5726133Abstract: The present invention is directed to a low ash natural gas engine oil which contains an additive package including a particular combination of detergents and also containing other standard additives such as dispersants, antioxidants, antiwear agents, metal deactivators, antifoamants and pour point depressants and viscosity index improvers. The low ash natural gas engine oil exhibits reduced deposit formation and enhanced resistance to oil oxidation and nitration.Type: GrantFiled: February 27, 1996Date of Patent: March 10, 1998Assignee: Exxon Research and Engineering CompanyInventors: Alan G. Blahey, James W. Finch
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Patent number: 5688751Abstract: Two-stroke cycle engines can be effectively lubricated by supplying to the engine a mixture of an oil of lubricating viscosity and a hydrocarbyl-substituted hydroxyaromatic carboxylic acid or an ester, unsubstituted amide, hydrocarbyl-substituted amide, ammonium salt, hydrocarbylamine salt, or monovalent metal salt thereof in an amount suitable to reduce piston deposits in said engine. The mixture supplied to the engine contains less than 0.06 percent by weight of divalent metals.Type: GrantFiled: August 14, 1996Date of Patent: November 18, 1997Assignee: The Lubrizol CorporationInventors: William K. S. Cleveland, Jack L. Karn, Daniel M. Vargo
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Patent number: 5672572Abstract: A lubricating oil composition having a total base number of 2 to 13 and comprising (A) 0.04 to 0.12% by weight (in terms of phosphorus), based on the whole composition, of a zinc dialkyldithiophosphate, (B) 1.0 to 3.0% by weight of a calcium sulfonate (TBN 200 to 300) and 0.3 to 2.5% by weight of a calcium salicylate (TBN 10 to 100) and (C) 50 to 2,000 ppm (in terms of molybdenum) of sulfurized oxymolybdenum dithiocarbamate containing a hydrocarbyl group having 8 to 23 carbon atoms.Type: GrantFiled: March 19, 1996Date of Patent: September 30, 1997Inventors: Katsuya Arai, Satoshi Asano, Sadao Wada