Heavy Metal Or Aluminum In An Organic Phosphorus Compound Having Four Chalcogens Bonded Directly To The Phosphorus Patents (Class 508/368)
  • Patent number: 11993757
    Abstract: To provide a lubricating oil composition for a shock absorber, an additive for friction adjustment, a lubricating oil additive, a shock absorber, and a method for adjusting friction of a shock absorber lubricating oil, capable of achieving both operation stability and riding comfort. A lubricating oil composition for a shock absorber contains a base oil and a friction adjusting agent, in which the friction adjusting agent contains zinc dithiophosphate and pentaerythritol.
    Type: Grant
    Filed: December 24, 2019
    Date of Patent: May 28, 2024
    Assignee: KYB CORPORATION
    Inventor: Shinji Kato
  • Patent number: 10611981
    Abstract: A lubricant composition of an oil of lubricating viscosity and a phosphite ester reaction product of a monomeric phosphorous acid or an ester thereof with a first alkylene diol having two hydroxy groups in a 1,4 or 1,5 or 1,6 relationship and a second, alkyl-substituted, diol being a substituted 1,3-propylene diol, exhibits good wear and frictional performance.
    Type: Grant
    Filed: November 5, 2015
    Date of Patent: April 7, 2020
    Assignee: The Lubrizol Corporation
    Inventors: William D. Abraham, Nga H. Nguyen, Paul E. Adams, Kurt F. Wollenberg
  • Publication number: 20140309150
    Abstract: A lubricant composition and a method of lubricating off-road vehicles and/or machinery. The lubricant composition includes (i) a base oil, (ii) at least one ashless component (A) having the structure P(?S)(SR1)(OR2)(OR3), wherein R1, R2 and R3 are independently selected form the group consisting of alkyl, aryl, alkylaryl, cycloalkyl, alcohol, carboxylic acid and ester having 1 to 24 carbon atoms; and (iii) at least one component (B) being a metal dialkyl dithio phosphate salt. The total of ashless components (A) provides to the lubricant composition from 0.010 to 0.080 wt. % phosphorus based on the total weight of the lubricant composition and the total of components (B) provides to the lubricant composition from 0.010 to 0.080 wt. % phosphorus based on the total weight of the lubricant composition.
    Type: Application
    Filed: April 11, 2013
    Publication date: October 16, 2014
    Applicant: Afton Chemical Corporation
    Inventor: Jonathan W. BENDER
  • Patent number: 8658577
    Abstract: The present invention provides an anti-wear compound selected from phosphorus compounds as represented by the following General Formula (2) or metal salts thereof as represented by the following General Formula (3).
    Type: Grant
    Filed: January 28, 2010
    Date of Patent: February 25, 2014
    Assignee: Shell Oil Company
    Inventors: Eiji Nagatomi, Tetsuo Wakizono
  • Publication number: 20140011719
    Abstract: A method for improving wear protection in an engine lubricated with a lubricating oil by using as the lubricating oil a formulated oil having a HTHS viscosity of less than 2.6 cP at 150° C. The formulated oil has a composition including a major amount of a lubricating oil base stock and a minor amount of metal phosphate nanoplatelets. The metal phosphate nanoplatelets are dispersed in the lubricating oil base stock sufficient for the formulated oil to pass wear protection requirements of one or more engine tests selected from TU3M, Sequence IIIG, Sequence IVA and OM646LA. Also provided are lubricating engine oil composition having improved wear protection.
    Type: Application
    Filed: June 27, 2013
    Publication date: January 9, 2014
    Applicant: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
    Inventors: Tabassumul Haque, Andy Haishung Tsou, Shuji Luo, Martin N. Webster
  • Patent number: 8592355
    Abstract: An engine oil composition obtained by compounding: (A) a base oil mixture including a first base oil and a second base oil, the first base oil having a kinematic viscosity of 2 to 50 mm2/s at 100° C., a viscosity index of 80, and a sulfur content of less than 0.03 mass %, the second base oil having a kinematic viscosity of 2 to 50 mm2/s at 100° C., a viscosity index of 60, and a sulfur content of 0.03 mass % or more; (B) an oil-soluble molybdenum-containing composition; and (C) a molybdenum-based friction modifier; in which, based on the total amount of engine oil composition, the content of the second base oil is 0.1 to 15 mass %, the content of (B) oil-soluble molybdenum-containing composition is 10 to 1000 mass ppm in terms of amount of molybdenum, and the content of (C) molybdenum-based friction modifier is 100 to 1000 mass ppm in terms of amount of molybdenum.
    Type: Grant
    Filed: June 5, 2006
    Date of Patent: November 26, 2013
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventor: Koki Ito
  • Patent number: 8227389
    Abstract: A lubricant additive produced by various processes, including mixing an organophosphate and an organofluorine compound, reacting an organophosphate and an organofluorine compound, reacting a fluorinated organophosphate and an organofluorine compound (with or without molybendum disulfide), or reacting an organophosphate, a metal halide and an organofluorine compound (with or without molybendum disulfide), to produce a reaction mixture comprising the lubricant additive. Also, a lubricant produced by various processes, including mixing an organophosphate and an organofluorine compound, reacting an organophosphate and an organofluorine compound, reacting a fluorinated organophosphate and an organofluorine compound (with or without molybendum disulfide), or reacting an organophosphate, a metal halide and an organofluorine compound (with or without molybendum disulfide), and adding at least a portion of the reaction mixture to a lubricant base.
    Type: Grant
    Filed: October 11, 2007
    Date of Patent: July 24, 2012
    Inventors: Pranesh B. Aswath, Harold Shaub, Ramoun Mourhatch, Krupal Patel, David P. Owen, Ronald L. Elsenbaumer
  • Patent number: 8216986
    Abstract: A lubricant additive produced by the process comprising mixing a metal halide with an organophosphate, the metal halide participating as a reactant and reacting the metal halide and the organophosphate to produce a reaction mixture comprising the lubricant additive. Also disclosed is a lubricant produced by the process comprising forming a lubricant additive by reacting metal halide and organophosphate together to form a reaction mixture, the metal halide participating as a reactant, and adding at least a portion of the reaction mixture to a lubricant base.
    Type: Grant
    Filed: July 14, 2005
    Date of Patent: July 10, 2012
    Inventors: Kajal Parekh, Pranesh B. Aswath, Harold Shaub, Ronald L. Elsenbaumer
  • Patent number: 8216982
    Abstract: Disclosed is a low-phosphorous lubricant produced by a process comprising forming a lubricant additive by reacting metal halide and organophosphate together to form a reaction mixture, the metal halide participating as a reactant, and adding at least a portion of the reaction mixture to a lubricant base comprising from about 0.01 weight percent phosphorous to about 0.1 weight percent phosphorous.
    Type: Grant
    Filed: September 7, 2005
    Date of Patent: July 10, 2012
    Inventors: Kajal Parekh, Pranesh B. Aswath, Harold Shaub, Ronald L. Elsenbaumer
  • Patent number: 8138132
    Abstract: A lubricant composition is provided as follows: At least 90% of a base grease; (a) a thiadiazole poly(ether)glycol complex in an amount which provides about 1500 to 3500 ppm sulfur; (b) molybdenum dihydrocarbyldithiophosphate in amount which provides about 77 to 450 ppm molybdenum; and (c) zinc dihydrocarbyldithiophosphate in an amount which provides about 600 to 1000 ppm zinc. An additive composition for grease, consisting of components (a), (b) and (c), is also provided.
    Type: Grant
    Filed: December 11, 2008
    Date of Patent: March 20, 2012
    Assignee: R.T. Vanderbilt Company, Inc.
    Inventors: Gaston A Aguilar, Ronald J Hiza
  • Patent number: 7989406
    Abstract: An additive to a fuel oil for a Diesel engine having a Diesel particulate filter (DPF), which comprises a molybdenum compound and having the function of improving the combustion property of a particulate matter (PM) trapped with DPF; a fuel oil comprising the additive; a lubricating oil composition for a Diesel engine having DPF, which has a sulfated ash content of 1.0% by weight or smaller, a sulfur content of 0.3% by weight or smaller and a molybdenum content of 100 ppm or greater; and DPF for removing PM in combustion gas discharged from a Diesel engine vehicle by trapping and burning PM, DPF comprising a filter supporting a molybdenum compound. The combustion property of PM trapped with the filter of DPF is improved, PM is burned at a low temperature with stability, the efficiency of removal of PM is improved and the life of DPF is increased.
    Type: Grant
    Filed: September 22, 2004
    Date of Patent: August 2, 2011
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventor: Tadashi Katafuchi
  • Patent number: 7932219
    Abstract: The present invention provides a grease composition which prevents frictional wear of a lubricating surface in a high load-applied state or in a state in which sliding motion is generated and is durable for a long time, a method of manufacturing capable of easily determining an addition ratio of an extreme-pressure agent of the grease composition, and a rolling bearing in which the grease composition is enclosed. A grease composition is composed by adding a thickener and an extreme-pressure agent containing sulfur in a molecular structure thereof to base oil. The extreme-pressure agent is added to the base oil so that a product of an amount (mgS/g) of active sulfur contained in the extreme-pressure agent and an addition amount (wt %) of the extreme-pressure agent with respect to an entire amount of the grease composition is in a range of 3 to 13.
    Type: Grant
    Filed: February 28, 2005
    Date of Patent: April 26, 2011
    Assignee: NTN Corporation
    Inventor: Hidenobu Mikami
  • Patent number: 7879776
    Abstract: A lubricant additive produced by the process comprising mixing an organophosphate and an organofluorine compound and reacting the organophosphate and the organofluorine compound to produce a reaction mixture comprising the lubricant additive. Also, a lubricant produced by the process comprising forming a reaction mixture by reacting an organophosphate and an organofluorine and adding at least a portion of the reaction mixture to a lubricant base.
    Type: Grant
    Filed: October 26, 2005
    Date of Patent: February 1, 2011
    Inventors: Krupal Patel, Pranesh B. Aswath, Harold Shaub, Ronald L. Elsenbaumer
  • Patent number: 7867957
    Abstract: The lubricating oil composition of the invention comprises a lubricating base oil with a urea adduct value of no greater than 4% by mass and a viscosity index of 100 or higher, an ashless friction modifier at 0.01-10% by mass and a phosphorus-containing anti-wear agent at 0.01-0.2% by mass as phosphorus, based on the total amount of the composition.
    Type: Grant
    Filed: March 28, 2008
    Date of Patent: January 11, 2011
    Assignee: Nippon Oil Corporation
    Inventors: Shigeki Matsui, Kazuo Tagawa
  • Patent number: 7772171
    Abstract: An internal combustion engine with a catalyst-containing exhaust-gas aftertreatment device is lubricated with a composition of a base oil; and a zinc salt of a mixture of phosphorus-containing compounds having hydrocarbyl groups R1 and R2 where the average total number of carbon atoms in R1 plus R2 for the mixture of phosphorus-containing compounds is at least 9.5, where 4 to 30 weight percent of such groups contain 2 to 4 carbon atoms and where in less than 8 mole percent of the phosphorus-containing molecules in the mixture of phosphorus-containing compounds each of R1 and R2 contain 2 to 4 carbon atoms.
    Type: Grant
    Filed: July 17, 2006
    Date of Patent: August 10, 2010
    Assignee: The Lubrizol Corporation
    Inventors: Saleem Al-Ahmad, Melody Wilk, Jack Kelley, John K. Pudelski, Paul E. Adams, Ewa Bardasz
  • Publication number: 20100160195
    Abstract: Aniline compounds useful as ashless TBN sources for lubricating oil compositions that are compatible with fluoroelastomeric engine seal materials, and lubricating oil compositions containing such aniline compounds.
    Type: Application
    Filed: December 23, 2008
    Publication date: June 24, 2010
    Inventors: Jie Cheng, Jacob Emert
  • Patent number: 7696137
    Abstract: A lubricating oil composition is disclosed which comprises a lubricating base oil, (A) at least one type of compound selected from specific phosphoric acid esters and salts thereof or in combination with (B) at least one type of compound selected from specific metal salts of specific phosphoric acid esters, with excellent oxidation stability, base number retention properties, anti-wear properties, extreme pressure properties and anti-corrosion properties and thus can be suitably used, in particular, as a lubricating oil for an internal combustion engine.
    Type: Grant
    Filed: February 15, 2005
    Date of Patent: April 13, 2010
    Assignee: Nippon Oil Corporation
    Inventor: Kazuhiro Yagishita
  • Publication number: 20100016188
    Abstract: The present invention relates to an antiwear agent and lubricating compositions thereof. The invention further provides for a method of lubricating a driveline device or a grease application by employing a lubricating composition containing the antiwear agent.
    Type: Application
    Filed: September 25, 2009
    Publication date: January 21, 2010
    Applicant: The Lubrizol Corporation
    Inventor: Charla A. Ramsey
  • Patent number: 7648949
    Abstract: Organo-Cobalt complexes having long chain saturated and unsaturated alkyl functionality as multifunctional additives in crankcase oils and the method of preparation thereof.
    Type: Grant
    Filed: January 27, 2005
    Date of Patent: January 19, 2010
    Assignee: The Lubrizol Corporation
    Inventors: Jonathan S. Vilardo, Jason R. Brown, William D. Abraham, Patrick E. Mosier, Paul E. Adams, Douglas T. Jayne, Richard M. Lange
  • Publication number: 20090156448
    Abstract: Compositions in the form of lubricating oil compositions, greases, fuels or functional fluids containing, in the form of Michael adducts, N-substituted phenylenediamine additives in which at least one of the substituents on the N atoms carries a carbonyl group that is connected to an alkyl, alkoxyalkyl, or alkylthioalkyl group either directly or via an oxygen atom.
    Type: Application
    Filed: December 12, 2007
    Publication date: June 18, 2009
    Inventors: Tushar kanti Bera, Rolfe J. Hartley, Jacob Emert, Jie Cheng, Theodore E. Nalesnik, Robert G. Rowland
  • Patent number: 7462583
    Abstract: Internal combustion engines exhibit improved efficiency of the emissions control system by using a lubricating oil composition of a base oil, an alkali or alkaline earth metal-containing detergent; a metal salt of one or more phosphorus-containing compounds represented by the formula (I), wherein X1 and X2 are independently O or S, and R1 and R2 are independently hydrocarbyl groups, the average total number of carbon atoms in R1 and R2 for the one or more phosphorus-containing compounds being at least 10.4; and an acylated nitrogen-containing compound having at least about 10 alphatic carbon atoms and a TBN of at least about 2; the lubricating oil composition being characterized by a phosphorus concentration of up to about 0.12% by weight and the substantial absence of copper, thereby generating a lean-phosphorus containing exhaust gas.
    Type: Grant
    Filed: June 5, 2003
    Date of Patent: December 9, 2008
    Assignee: The Lubrizol Corporation
    Inventors: Melody A. Wilk, William B. Chamberlin, III, Jack C. Kelley, William D. Abraham
  • Patent number: 6919300
    Abstract: 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: Grant
    Filed: July 2, 2002
    Date of Patent: July 19, 2005
    Assignee: Ashland Inc.
    Inventors: Michael A. Dituro, Richard J. Baumgart, Mandeep S. Saini, Christopher J. Nonevski
  • Publication number: 20040138073
    Abstract: An additive for imparting antiwear properties to a lubricant composition is based on a combination of (1) an organo borate ester composition and (2) one or more sulfur- or phosphorus-containing compounds or a non-sulfur molybdenum compound. The sulfur- or phosphorus-containing compounds are dithiocarbamate, bisdithiocarbamate, 1,3,4-diathiazole, phosphorodithioate, phosphorodithioate esters, and the molybdenum compound is prepared by reacting (a) about 1.0 mole of fatty oil having 12 or more carbon atoms, (b) about 1.0 to 2.5 moles diethanolamine and (c) a molybdenum source.
    Type: Application
    Filed: October 2, 2003
    Publication date: July 15, 2004
    Applicant: R.T. Vanderbilt Company, Inc.
    Inventors: Thomas J. Karol, Steven G. Donnelly
  • Publication number: 20040077506
    Abstract: A lubricating oil composition having a total base number of at least about 8, comprising a major amount of oil of lubricating viscosity; an amount of one or more dihydrocarbyl dithiophosphate metal salt introducing into the lubricating oil composition no more than 0.06 wt. % of phosphorus; at least 1.2 wt. % of hindered phenol antioxidant; and boron, and/or a boron-containing compound or compounds in an amount providing the lubricating oil composition with at least 200 ppm by weight of boron, all weight percentages being based on the total weight of the lubricating oil composition.
    Type: Application
    Filed: October 22, 2002
    Publication date: April 22, 2004
    Inventors: Stephen Arrowsmith, Nancy Z. Diggs, Andrew J. D. Ritchie, Jorge O. Pain
  • Publication number: 20040038834
    Abstract: This invention relates to a lubricating composition comprising a major amount of an oil of lubricating viscosity, (A) an antiwear improving amount of at least one molybdenum containing composition, (B) at least one phosphorus antiwear or extreme pressure agent, and (C) at least one dispersant, provided that the lubricating composition is free of polysulfurized olefins. The lubricating compositions have improved antiwear properties. When the lubricating composition is used in a manual transmission, the amount of brass wear is reduced.
    Type: Application
    Filed: August 21, 2003
    Publication date: February 26, 2004
    Inventor: Michael P. Gahagan
  • Patent number: 6610636
    Abstract: A premium synthetic lubricant having antiwear properties comprises a synthetic isoparaffinic hydrocarbon base stock and an effective amount of at least one antiwear additive. The antiwear additive is preferably at least one of a metal phosphate, a metal dialkyldithiophosphate, a metal dithiophosphate a metal thiocarbamate, a metal dithiocarbamate, an ethoxylated amine dialkyldithiophosphate and an ethoxylated amine dithiobenzoate. Metal dialkyldithiophosphates are preferred, particularly zincdialkyldithiophosphate (ZDDP). The base stock is derived from a waxy, Fischer-Tropsch synthesized hydrocarbon feed fraction comprising hydrocarbons having an initial boiling point in the range of about 650-750° F., by a process which comprises hydroisomerizing the feed and dewaxing the isomerate. The lubricant may also contain hydrocarbonaceous and synthetic base stock material in admixture with the Fischer-Tropsch derived base stock.
    Type: Grant
    Filed: November 9, 2001
    Date of Patent: August 26, 2003
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Paul J. Berlowitz, Jacob J. Habeeb, Robert J. Wittenbrink
  • Publication number: 20030144158
    Abstract: The invention concerns a threaded component for a seizure-resistant tubular threaded joint wherein a lubricating substance is deposited in a thin film on at least the surface of the threads of the threading, said surface being treated to adsorb said lubricating substance. The lubricating substance consists of a homogeneous mixture of a) a thickening agent; b) a set of extreme-pressure additives physically and chemically compatible with the thickening agent and comprising at least an extreme-pressure additive with chemical action called chemical EP additive and capable of being used at Hertz pressures not less than 1000 Mpa's; c) an oil. The proportions of the constituents of the lubricating substance are selected such that said lubricating substance has a consistency capable of ensuring a self-induced and film-forming lubricating process. The invention also concerns a method for producing the thin film.
    Type: Application
    Filed: April 30, 2002
    Publication date: July 31, 2003
    Inventor: Daniel Petelot
  • Publication number: 20030069145
    Abstract: A gas engine lubricating oil composition that is substantially free from dispersant. The gas engine lubricating oil composition has a TBN in the range of 3.5 to 20. The gas engine lubricating oil composition comprises an oil of lubricating viscosity and at least one metal detergent.
    Type: Application
    Filed: September 9, 2002
    Publication date: April 10, 2003
    Inventors: Laurent Chambard, Yolanda Owen
  • Patent number: 6541430
    Abstract: Fluorinated dialkyl dithiophosphoric acids according to formula (I) and metallic salts thereof: the compounds are useful, for example, as additives for lubricant compositions.
    Type: Grant
    Filed: March 24, 2000
    Date of Patent: April 1, 2003
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Richard P. Beatty
  • Publication number: 20030040442
    Abstract: The invention aims to provide a rolling bearing that secures a sufficient bearing life economically even when used under such conditions that water from the outside or water formed by moisture condensation may seep into the lubricant or the bearing is affected by the vibrations, and particularly a rolling bearing suited to the electric parts and accessaries of au automobile engine, such as an alternator. To accomplish the object, the hydrogen ion exponent pH of the grease sealed into the inside of the bearing is adjusted in a range of from 7 to 13. For the same purpose, the hydrogen ion exponent pH of the grease is adjusted in a range of from 5 to 13 where a prescribed amount of an organic metal salt or ADTC is added to the grease, where a prescribed amount of an inorganic compound having an average particle size of 2 □m or smaller is added to the grease, or where a diurea compound containing an aromatic amine or a mixture of the diurea compound is added to the grease as a thickener.
    Type: Application
    Filed: March 7, 2002
    Publication date: February 27, 2003
    Applicant: NSK LTD.
    Inventors: Atsushi Yokouchi, Youichi Matsumoto, Kenichi Iso, Kouichi Hachiya, Hideki Koizumi, Michiharu Naka
  • Publication number: 20030000866
    Abstract: This invention relates to mineral oil based gear oils and transmission fluids which comprise a major amount of a mineral oil having an iodine number of less than 9 and where at least 55% of the saturates are aliphatic, and gear oil or transmission fluid additives. In one embodiment, the invention relates to a gear oil or transmission fluid composition comprising a major amount of lubricant basestock and at least one functional additive wherein a major amount of the lubricant basestock comprises a mineral oil having an iodine number of less than 9 and comprising at least 45% by weight of aliphatic saturates. These gear oils and transmission fluids have good viscosity and oxidation properties.
    Type: Application
    Filed: May 24, 2000
    Publication date: January 2, 2003
    Inventor: Robert W. Cain
  • Publication number: 20020119895
    Abstract: This invention relates to a lubricating composition comprising a major amount of an oil of lubricating viscosity and (A) an antiwear improving amount of at least one molybdenum containing composition, and (B) at least one member selected from the group consisting of (i) at least one borated overbased metal salt of an acidic organic compound, provided that (A) and (Bi) are not the same, (ii) a combination of (a) at least one organic polysulfide or at least one ashless dithiocarbamate containing composition and (b) at least one component selected from the group consisting of a metal thiophosphate, a phosphoric acid ester or salt thereof, a phosphorus-containing carboxylic acid, ester, ether, or amide, a borated dispersant, an alkali metal borate, a borated fatty amine, a borated phospholipid, a borate ester, and mixtures thereof, and (iii) a combination of (i) and (ii).
    Type: Application
    Filed: May 26, 1995
    Publication date: August 29, 2002
    Inventors: SUSAN P. COOK, JAMES J. SCHWIND, BERNARD CONSTANS, HENRI BOURGOGNON
  • Publication number: 20020103089
    Abstract: A lubricant composition for a surface treatment of a steel filament comprises at least one specified compound as a lubricant component and a rubber-steel filament composite body is prepared by using a steel filament treated with the lubricant composition.
    Type: Application
    Filed: June 29, 2001
    Publication date: August 1, 2002
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Yasuo Fukushima, Hajime Kondo
  • Publication number: 20020086803
    Abstract: A premium synthetic lubricant having antiwear properties comprises a synthetic isoparaffinic hydrocarbon base stock and an effective amount of at least one antiwear additive. The antiwear additive is preferably at least one of a metal phosphate, a metal dialkyldithiophosphate, a metal dithiophosphate a metal thiocarbamate, a metal dithiocarbamate, an ethoxylated amine dialkyldithiophosphate and an ethoxylated amine dithiobenzoate. Metal dialkyldithiophosphates are preferred, particularly zincdialkyldithiophosphate (ZDDP). The base stock is derived from a waxy, Fischer-Tropsch synthesized hydrocarbon feed fraction comprising hydrocarbons having an initial boiling point in the range of about 650-750° F., by a process which comprises hydroisomerizing the feed and dewaxing the isomerate. The lubricant may also contain hydrocarbonaceous and synthetic base stock material in admxture with the Fischer-Tropsch derived base stock.
    Type: Application
    Filed: November 9, 2001
    Publication date: July 4, 2002
    Inventors: Paul J. Berlowitz, Jacob J. Habeeb, Robert J. Wittenbrink
  • Publication number: 20020002120
    Abstract: This invention relates to a lubricating composition comprising a major amount of an oil of lubricating viscosity, (A) an antiwear improving amount of at least one molybdenum containing composition, (B) at least one phosphorus antiwear or extreme pressure agent, and (C) at least one dispersant, provided that the lubricating composition is free of polysulfurized olefins. The lubricating compositions have improved antiwear properties. When the lubricating composition is used in a manual transmission, the amount of brass wear is reduced.
    Type: Application
    Filed: December 22, 2000
    Publication date: January 3, 2002
    Inventor: Michael P. Gahagan
  • Patent number: 6211123
    Abstract: A lubricating oil composition is provided comprising a major amount of an oil of lubricating viscosity and a minor amount of, as an additive, at least one compound comprising a trinuclear tungsten core and bonded thereto a ligand or ligands capable of rendering the compound oil-soluble or oil-dispersible.
    Type: Grant
    Filed: June 17, 1999
    Date of Patent: April 3, 2001
    Assignee: Infineum USA L.P.
    Inventors: Alisdair J. Brown, Ian A. W. Bell, John A. Cleverley, Jose M. G. Gomes, Edward I. Stiefel, Jonathan M. McConnachie
  • Patent number: 6165949
    Abstract: A premium synthetic lubricant having antiwear properties comprises a synthetic isoparaffinic hydrocarbon base stock and an effective amount of at least one antiwear additive. The antiwear additive is preferably at least one of a metal phosphate, a metal dialkyldithiophosphate, a metal dithiophosphate a metal thiocarbamate, a metal dithiocarbamate, an ethoxylated amine dialkyldithiophosphate and an ethoxylated amine dithiobenzoate. Metal dialkyldithiophosphates are preferred, particularly zincdialkyldithiophosphate (ZDDP). The base stock is derived from a waxy, Fischer-Tropsch synthesized hydrocarbon feed fraction comprising hydrocarbons having an initial boiling point in the range of about 650-750.degree. F., by a process which comprises hydroisomerizing the feed and dewaxing the isomerate. The lubricant may also contain hydrocarbonaceous and synthetic base stock material in admxture with the Fischer-Tropsch derived base stock.
    Type: Grant
    Filed: September 4, 1998
    Date of Patent: December 26, 2000
    Assignee: Exxon Research and Engineering Company
    Inventors: Paul J. Berlowitz, Jacob J. Habeeb, Robert J. Wittenbrink
  • Patent number: 6063742
    Abstract: Improved grease compositions comprise a major amount of an oil based metal soap thickened base grease selected from the group consisting of simple metal soap thickened base grease, complex grease and failed complex grease, at least one metal salt of a sulfur and phosphorus containing acid, an overbased metal salt of an organic acid, a hydrocarbyl phosphite, and optionally, an aliphatic group substituted carboxylic acid, anhydride thereof and aliphatic group substituted lactone, wherein the aliphatic group contains at least about 8 carbon atoms in amounts sufficient to increase the dropping point of the base grease, as measured by ASTM Procedure D-2265 by at least 15.degree. C.
    Type: Grant
    Filed: March 1, 1999
    Date of Patent: May 16, 2000
    Assignee: The Lubrizol Corporation
    Inventor: Edward J. Konzman
  • Patent number: 6060437
    Abstract: A lubricating oil composition for internal combustion engines comprises:(A) a major amount of a basestock of lubricating viscosity containing from greater than 35 to less than 70 mass % of one or more PAO's, the balance preferably being one or more Group I basestocks as defined in API 1509; and(B) two or more additive components such as an ashless dispersant and a metal detergent.
    Type: Grant
    Filed: July 29, 1998
    Date of Patent: May 9, 2000
    Assignee: Exxon Chemical Patents, Inc.
    Inventors: Robert Robson, Trevor Anthony Brettell
  • Patent number: 6010986
    Abstract: Disclosed is a composition for reducing the copper-lead bearing corrosion of a formulation that includes a major amount of an oil of lubrication viscosity and a minor amount of a corrosion-reducing additive comprising:(A) a dispersant with a total base number of from 20 to 160 on an oil-free basis, with the proviso that the dispersant is substantially boron-free;(B) a metal salt of a phosphorus acid; and(C) a metal overbased composition comprising at least one carboxylate, phenate, or sulfonate wherein the metal is lithium, sodium, potassium, magnesium or calcium, and wherein the improvement comprises(D) a borate ester.
    Type: Grant
    Filed: July 31, 1998
    Date of Patent: January 4, 2000
    Assignee: The Lubrizol Corporation
    Inventors: Carl F. Stachew, James R. Shanklin
  • Patent number: 6008165
    Abstract: 1. A composition for reducing the copper-lead bearing corrosion of a formulation that includes a major amount of an oil of lubrication viscosity and a minor amount of a corrosion-reducing additive comprising(A) a borated dispersant with a total base number of from 20 to 160 on an oil-free basis;(B) a metal salt of a phosphorus acid; and(C) a metal overbased composition comprising at least one carboxylate, phenate, or sulfonate wherein the metal is lithium, sodium, potassium, magnesium or calcium, and wherein the improvement comprises(D) a borate ester.The borated ester and borated dispersant provide from 20 to about 800 parts per million (ppm) mass of boron in the composition.
    Type: Grant
    Filed: July 31, 1998
    Date of Patent: December 28, 1999
    Assignee: The Lubrizol Corporation
    Inventors: James R. Shanklin, Carl F. Stachew
  • Patent number: 5739089
    Abstract: A mixed zinc/copper dihydrocarbyl dithiophosphate, e.g. of zinc diethyl-hexyl dithiophosphate and cuprous diethyl-hexyl dithiophosphate, is prepared by reacting a dihydrocarbyl dithiophosphoric acid (DDPA) with a mixture of a basic zinc compound eg ZnO, and a basic copper compound eg Cu.sub.2 O, preferably in the presence of a promoter, eg zinc acetate. The product is a good antioxidant for use in lubricating oils.
    Type: Grant
    Filed: March 11, 1997
    Date of Patent: April 14, 1998
    Assignee: Exxon Chemical Patents Inc.
    Inventor: Terence Colclough
  • Patent number: 5719107
    Abstract: Thus, the instant invention is directed toward an oil for diesel engines comprising an admixture of (A) a major amount of an oil of lubricating viscosity, (B) at least 4 mass % dispersant, (C) at least 0.3 mass % of a metal phenate, (D) less than 0.1 mass % friction modifier, (E) less than 0.3 mass % of sulfurized phenols and, (F) less than 0.12 mass % neutral calcium sulfonate.
    Type: Grant
    Filed: August 9, 1996
    Date of Patent: February 17, 1998
    Assignee: Exxon Chemical Patents Inc
    Inventors: Edward Francis Outten, Andrew James Dalziel Ritchie
  • Patent number: 5698498
    Abstract: This invention relates to a lubricating composition comprising a major amount of an oil of lubricating viscosity and (A) a minor amount of at least one hydroxyalkyl dithiocarbamate or at least one borate thereof, wherein the dithiocarbamate is derived from an amine other than an alkyl or alkenylsuccinimide. In another aspect the invention relates to a lubricating composition comprising a major amount of an oil of lubricating viscosity, a hydroxyalkyl dithiocarbamate or a borate thereof, and (B) at least one sulfur compound or (C) at least one phosphorus or boron antiwear or extreme pressure agent. The invention also relates to greases, functional fluids and aqueous fluids containing the hydroxyalkyl dithiocarbamates and borates thereof. The lubricants and fluids have improved antiwear and extreme pressure properties including providing improved antiscuff protection.
    Type: Grant
    Filed: August 23, 1996
    Date of Patent: December 16, 1997
    Assignee: The Lubrizol Corporation
    Inventors: Carmen V. Luciani, Syed Q. A. Rizvi, Bernard C. Roell, Jr.
  • Patent number: 5627294
    Abstract: An alcohol and/or a carboxylic acid or carboxylate is used to reduce the proportion of sediment obtained in the manufacture of a metal or ammonium dihydrocarbyl dithiophosphate, for example, a zinc dihydrocarbyl dithiophosphate (ZDDP) for use as an antiwear agent/antioxidant in crankcase lubricating oils.
    Type: Grant
    Filed: February 24, 1995
    Date of Patent: May 6, 1997
    Assignee: Exxon Chemical Patents Inc.
    Inventors: David R. Adams, Patrick F. Ginnelly
  • Patent number: RE39648
    Abstract: Thus, the instant invention is directed toward an oil for diesel engines comprising an admixture of (A) a major amount of an oil of lubricating viscosity, (B) at least 4 mass % dispersant, (C) at least 0.3 mass % of a metal phenate, (D) less than 0.1 mass % friction modifier, (E) less than 0.3 mass % of ashless sulfurized phenols and, (F) less than 0.12 mass % neutral calcium sulfonate.
    Type: Grant
    Filed: July 24, 2001
    Date of Patent: May 22, 2007
    Assignee: Infineum USA L.P.
    Inventors: Edward Francis Outten, Andrew James Dalziel Ritchie