The Heavy Metal Is Zinc Patents (Class 508/371)
  • Patent number: 10487289
    Abstract: A method for improving oxidation stability and viscosity control, while maintaining or improving cleanliness performance and deposit control, in an engine or other mechanical component lubricated with a lubricating oil by using as the lubricating oil a formulated oil. The formulated oil has a composition including a lubricating oil base stock as a major component, and a mixture of (i) at least one detergent, and (ii) at least one antioxidant, or a mixture of (i) at least one detergent, (ii) at least one dispersant, and (iii) at least one antioxidant, as minor components. The at least one detergent comprises a sulfonate detergent, the at least one dispersant comprises a borated dispersant, and the at least one antioxidant includes an alkylated diphenylamine. The engine or other mechanical component is lubricated with the lubricating oil operating in the presence of biodiesel fuel. A lubricating oil formulated with the above major and minor components.
    Type: Grant
    Filed: January 26, 2018
    Date of Patent: November 26, 2019
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Raymond G. Burns, III, Smruti A. Dance, Douglas E. Deckman
  • Patent number: 10132355
    Abstract: A grease for a rolling bearing of an information recording and reproducing apparatus contains a base oil, a thickener, and at least one kind of an antioxidant selected from an amine-based antioxidant expressed by the General Formula (1), and a phenol-based antioxidant expressed by the General Formula (2). The base oil contains a refined mineral oil classified as Group III in a base oil category defined by the American Petroleum Institute, and the flash point of the refined mineral oil is 240° C. or higher.
    Type: Grant
    Filed: August 25, 2016
    Date of Patent: November 20, 2018
    Assignee: SEIKO INSTRUMENTS INC.
    Inventors: Akihiro Iino, Yukihiro Nakayama, Misato Hanaoka, Hisaya Nakamura, Hiroki Yoda
  • Patent number: 9994788
    Abstract: Grease comprises a base oil and a thickener. The base oil contains mineral oil and poly-?-olefin, the proportion of the mineral oil is 10% by mass to 40% by mass in 100% by mass of the base oil, and a kinematic viscosity v1 of the mineral oil at 40° C. is higher than a kinematic viscosity v2 of the poly-?-olefin at 40° C. The base oil comprises a refined mineral oil that is classified as Group III in a base oil category defined by the American Petroleum Institute, and the flash point of the refined mineral oil is 240° C. or higher. A rolling bearing contains the grease, a rolling bearing device includes a shaft supported by the rolling bearing device, and an information recording and reproducing apparatus includes the rolling bearing device.
    Type: Grant
    Filed: January 20, 2016
    Date of Patent: June 12, 2018
    Assignee: SEIKO INSTRUMENTS INC.
    Inventors: Akihiro Iino, Yukihiro Nakayama, Misato Hanaoka, Hisaya Nakamura, Hiroki Yoda
  • Patent number: 9725673
    Abstract: The disclosure provides a lubricant composition for lubricating an engine, a method for operating an engine and an additive concentrate. The lubricant composition includes a base oil of lubricating viscosity; one or more metal dialkyldithiophosphates having more than 75 mole percent of alkyl groups derived from 4-methyl-2-pentanol, and from about 0.1 to about 2.0 percent by weight of detergent derived from an alkyl phenol or sulfurized alkyl phenol based on a total weight of the lubricant composition. An amount of the one or more metal dialkyldithiophosphate in the lubricant composition ranges from about 0.01 to about 0.10 percent by weight phosphorus based on a total weight of the lubricant composition. The lubricant composition has a total a total base number (TBN) of about 5.0 to about 10.0.
    Type: Grant
    Filed: March 25, 2010
    Date of Patent: August 8, 2017
    Assignee: AFTON CHEMICAL CORPORATION
    Inventors: Paul G. Griffin, Jeremy P. Styer
  • Patent number: 8791055
    Abstract: A lubricating composition comprising an oil of lubricating viscosity, 1 to 80 parts per million by weight of titanium in the form of an oil-soluble titanium-containing material, and a salicylate detergent provides beneficial effects on properties such as deposit control, oxidation, and filterability in engine oils.
    Type: Grant
    Filed: September 23, 2008
    Date of Patent: July 29, 2014
    Assignee: The Lubrizol Corporation
    Inventor: Virginia A. Carrck
  • Publication number: 20140187456
    Abstract: A method of preparing a lubricant composition comprising at least one base oil component, at least one first additive component and at least one second additive component which method comprises: introducing into an elongate mixing vessel comprising at least one static mixer, at least one base oil component, at least one first additive component and at least one second additive component; the at least one first additive component being introduced into the mixing vessel separately from the at least one second additive component; and mixing the at least one second additive component with a mixture of the at least one first additive component and the at least one base oil component in the elongate mixing vessel using the at least one static mixer.
    Type: Application
    Filed: November 21, 2013
    Publication date: July 3, 2014
    Inventors: Gordon David Lamb, Kalpendra Baburao Rajurkar, Milind Satish Vaidya
  • Patent number: 8748357
    Abstract: The lubricating oil used to lubricate diesel engines is stabilized against the detrimental degradation effects of biodiesel fuel by the addition to the lubricating oil of an additive concentrate comprising a premix of a first antioxidant, a second antioxidant of a type different from the first and an organometallic compound.
    Type: Grant
    Filed: July 10, 2009
    Date of Patent: June 10, 2014
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Jacob J. Habeeb, Ramesh Varadaraj, Brandon T. Weldon
  • Patent number: 8728997
    Abstract: The present invention provides a lubricating oil composition which is less in evaporation loss even having a low viscosity and excellent in lubricating properties such as low-temperature viscosity characteristics and anti-seizure properties and in oxidation stability, suitable for use in engines, automatic transmissions, manual transmissions, final reduction gear units, and continuously variable transmissions. The lubricating oil composition comprises (A) a lubricating base oil and (B) a poly(meth)acrylate additive in such an amount that the kinematic viscosity at 100° C. of the composition (Vc) is from 3 to 15 mm2/s, the viscosity index of the composition is from 95 to 200, and the ratio of the kinematic viscosity at 100° C. of (A) the lubricating base oil (Vb) to (Vc) (=Vb/Vc) is 0.60 or greater, further, (C) a metallic detergent, (D) an ashless dispersant and (E) zinc dithiophosphate, each in a specific amount.
    Type: Grant
    Filed: April 19, 2007
    Date of Patent: May 20, 2014
    Assignee: Nippon Oil Corporation
    Inventors: Osamu Kurosawa, Masaaki Itou, Masato Takahashi
  • Patent number: 8722594
    Abstract: The present invention provides a lubricating oil composition comprising: a lubricant base oil; and a dialkyl monothiophosphate metal salt, wherein based on the total mass of the lubricating oil composition, the dialkyl monothiophosphate metal salt is contained in an amount of 0.005 to 0.12 mass % in terms of phosphorus; thereby it is possible to provide the lubricating oil composition which can be reduced in the sulfur content and which exhibits excellent friction reduction while maintaining the anti-wear property equivalent to that of the ZnDTP-added oil.
    Type: Grant
    Filed: February 23, 2011
    Date of Patent: May 13, 2014
    Assignee: JX Nippon Oil & Energy Corporation
    Inventor: Kazuhiro Yagishita
  • Patent number: 8664442
    Abstract: A dialkylanilino-cyclohexane compound useful as an antioxidant has the following formula I or formula II: wherein Ar1 and Ar2 can be the same or different and each is an alkylaromatic group; each of R1, R2, R3, and R4 is independently selected from hydrogen or CR7R8; each of R5, R6, and R7 is independently selected from hydrogen and a substituted or unsubstituted C1 to C32 hydrocarbyl group; and each R8 is independently selected from hydrogen and a C1 to C2 alkyl group, provided that when, each of R1 and R2 is CR7R8 and each such R8 is other than hydrogen, R1 and R2 may be joined to form a five or six-membered ring, and provided further that when, each of R3 and R4 is an adjacent CR7R8 and each such R8 is other than hydrogen, R3 and R4 may be joined to form a five or six-membered ring.
    Type: Grant
    Filed: September 9, 2008
    Date of Patent: March 4, 2014
    Assignee: Chemtura Corporation
    Inventor: Theodore E. Nalesnik
  • Publication number: 20130345103
    Abstract: A gear oil composition is provided having fuel saving performance and providing gears or bearings with sufficient durability. The composition includes a base oil having a blend of (A) a mineral lubricating base oil having a 100° C. kinematic viscosity of 2 to 6 mm2/s, a % CA of 0.5 or less and a tertiary carbon content of 7% or more and (B) a solvent-refined mineral lubricating oil having a 100° C. kinematic viscosity of 10 to 70 mm2/s in an amount of 2 to 40 percent by mass based on the total base oil composition mass; (D) zinc dialkyldithiophosphate in an amount of 0.02 to 0.5 percent by mass based on the zinc amount; and (E) an alkaline earth metal detergent having a base number of 100 mgKOH/g or greater in an amount of 0.1 to 0.5 percent by mass, based on the metal amount, of the gear oil composition mass.
    Type: Application
    Filed: September 13, 2011
    Publication date: December 26, 2013
    Applicant: JX NIPPON OIL & ENERGY CORPORATION
    Inventors: Hajime Nakao, Hitoshi Komatsubara
  • Patent number: 8614174
    Abstract: Provided is a lubricant having a first base stock of one or more alkyl cyclohexyl 1,2-dicarboxylate esters at 1 wt % to 50 wt % based on the total weight of the blend, and a second base stock at 99 wt % to 50 wt % based on the total weight of the blend, wherein the second base stock is chosen from (a) one or more C6 to C16 poly-?-olefins, (b) one or more gas-to-liquid materials, and (c) one or more Group I, II, and III oils. Also provided are methods of making such lubricant blends.
    Type: Grant
    Filed: December 5, 2008
    Date of Patent: December 24, 2013
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Abhimanyu Onkar Patil, Margaret May-Som Wu
  • Patent number: 8586516
    Abstract: There is disclosed a Super Tractor Oil Universal lubricating composition comprising an oil of lubricating viscosity formulated with an additive package comprising at least one metal detergent, at least one phosphorus-based wear preventative, and at least one molybdenum compound. Methods for improving the braking performance of a tractor and the anti-wear protection of a tractor engine are also disclosed.
    Type: Grant
    Filed: January 19, 2007
    Date of Patent: November 19, 2013
    Assignee: Afton Chemical Corporation
    Inventors: Jeffrey L. Milner, Peter L. Leitner, John M. Pietras
  • Patent number: 8557755
    Abstract: The invention provides a lubricating composition containing an oil of lubricating viscosity and a compound obtained/obtainable by a process comprising reacting a glycolic acid, a 2-halo-acetic acid, or a lactic acid, or an alkali or alkaline metal salts thereof, (typically glycolic acid or a 2-halo-acetic acid) with at least one member selected from the group consisting of an amine, an alcohol, and an aminoalcohol. The invention further relates to the use of the lubricating composition in an internal combustion engine.
    Type: Grant
    Filed: February 14, 2013
    Date of Patent: October 15, 2013
    Assignee: The Lubrizol Corporation
    Inventors: William R. S. Barton, Seth L. Crawley, Patrick E. Mosier, Matthew D. Gieselman, Daniel J. Saccomando
  • Patent number: 8530395
    Abstract: The invention provides a lubricating composition containing an oil of lubricating viscosity and a compound obtained/obtainable by a process comprising reacting a glycolic acid, a 2-halo-acetic acid, or a lactic acid, or an alkali or alkaline metal salts thereof, (typically glycolic acid or a 2-halo-acetic acid) with at least one member selected from the group consisting of an amine, an alcohol, and an aminoalcohol. The invention further relates to the use of the lubricating composition in an internal combustion engine.
    Type: Grant
    Filed: February 14, 2013
    Date of Patent: September 10, 2013
    Assignee: The Lubrizol Corporation
    Inventors: William R. S. Barton, Seth L. Crawley, Patrick E. Mosier, Matthew D. Gieselman, Daniel J. Saccomando
  • Publication number: 20130137616
    Abstract: The present invention provides a low phosphorus lubricating oil composition containing a mixture of zinc dithiophosphates in a certain ratio surprisingly yields improved lead corrosion. The synergistic combination of mixed zinc dithiophosphates containing a zinc primary dialkyl dithiophosphate, zinc secondary dialkyl dithiophosphate and zinc diaryl dithiophosphate in a respective ratio, based on the phosphorus content, of the zinc primary dialkyl dithiphosphate to zinc secondary dialkyl dithiophosphate from about 2:1 to about 1:2 and the ratio of the mixture of zinc primary dialkyl dithiophosphate and zinc secondary dialkyl dithiophosphate to zinc diaryl dithiophosphate from about 6:1 to about 1:1. When used in a lubricating oil composition having a total phosphorus content less than about 0.06 wt %, based on the total weight of the lubricating oil composition to lubricate internal combustion engines. The mixture of zinc dithiophosphates greatly reduces lead corrosion.
    Type: Application
    Filed: January 22, 2013
    Publication date: May 30, 2013
    Applicant: Chevron Oronite Company LLC
    Inventor: Alexander B. Boffa
  • Publication number: 20130137617
    Abstract: A method for improving fuel efficiency, while maintaining or 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. In one form, the formulated oil has a composition that includes a lubricating oil base stock as a major component, and zinc dialkyl dithio phosphate, a mixture of (i) at least two alkali metal detergents, (ii) at least two alkaline earth metal detergents, or (iii) one or more alkali metal detergents and one or more alkaline earth metal detergents; and a viscosity index improver, as minor components. The lubricating oil has a HTHS viscosity of less than 2.6 cP at 150° C. The composition contains less than 2 weight percent of the viscosity index improver, based on the total weight of the formulated oil or lubricating engine oil.
    Type: Application
    Filed: November 13, 2012
    Publication date: May 30, 2013
    Applicant: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
    Inventor: ExxonMobil Research and Engineering Company
  • Publication number: 20130090273
    Abstract: This invention is directed to ultra-low viscosity passenger car engine oil compositions with a kinematic viscosity at 100° C. of from 4 to 6 cSt, and comprising in admixture 60 wt % to 90 wt % of a first base oil component, based on the total weight of the composition, the first base oil component consisting of a polyalphaolefin base stock or combination of polyalphaolefin base stocks, each having a kinematic viscosity at 100° C. of from 3.2 cSt to 3.8 cSt; and 0.1 wt % to 20 wt % of a second base oil component, based on the total weight of the composition, the second base oil component consisting of a Group II, Group III or Group V base stock, or any combination thereof; wherein the composition comprises from 0 wt % to less than 0.25 wt % viscosity index improver, on a solid polymer basis.
    Type: Application
    Filed: September 12, 2012
    Publication date: April 11, 2013
    Applicants: ExxonMobil Chemical Patents Inc., ExxonMobil Research and Engineering Company
    Inventors: Richard Wayne Martin, Douglas Edward Deckman, Kevin John Kelly, Craig Janzen Emett, Mark Paul Hagemeister, Bruce Allan Harrington, Chon-Yie Lin, Phillip Thomas Matsunaga, Charles James Ruff, Kevin Bruce Stavens
  • Patent number: 8404625
    Abstract: The invention provides a lubricating composition containing an oil of lubricating viscosity and a compound obtained/obtainable by a process comprising reacting a glycolic acid, a 2-halo-acetic acid, or a lactic acid, or an alkali or alkaline metal salts thereof, (typically glycolic acid or a 2-halo-acetic acid) with at least one member selected from the group consisting of an amine, an alcohol, and an aminoalcohol. The invention further relates to the use of the lubricating composition in an internal combustion engine.
    Type: Grant
    Filed: August 16, 2010
    Date of Patent: March 26, 2013
    Assignee: The Lubrizol Corporation
    Inventors: William R. S. Barton, Seth L. Crawley, Patrick E. Mosier, Matthew D. Gieselman, Daniel J. Saccomando
  • Patent number: 8394745
    Abstract: The present invention provides a lubricating base oil comprising saturated components of 90% by mass or greater, wherein the proportion of cyclic saturated components among the saturated components is not greater than 40% by mass, and by having a viscosity index of 110 or higher and an iodine value of not greater than 2.5. The lubricating base oil of the invention exhibits excellent viscosity-temperature characteristics and heat and oxidation stability while also allowing additives to exhibit a higher level of function when additives are included. The lubricating base oil of the invention is suitable for use in various lubricating oil fields, and is especially useful for reducing energy loss and achieving energy savings in devices in which the lubricating base oil is applied.
    Type: Grant
    Filed: March 28, 2007
    Date of Patent: March 12, 2013
    Assignees: Nippon Oil Corporation, Petroleum Energy Center
    Inventors: Takashi Sano, Shinichi Shirahama, Kazuo Tagawa, Kenichi Komiya, Shigeki Matsui, Osamu Kurosawa
  • Patent number: 8377857
    Abstract: A method of lubricating a cylinder liner and a crankcase in a marine diesel crosshead engine with the same lubricating oil composition. The lubricating oil composition has a TBN, as measured using ASTM D 2896-98, of 10 to 55 mg KOH/g. The lubricating oil composition comprises: at least 40 mass % of an oil of lubricating viscosity; at least one detergent; at least one dispersant; and at least one anti-wear additive.
    Type: Grant
    Filed: May 24, 2006
    Date of Patent: February 19, 2013
    Assignee: Infineum International Limited
    Inventors: Laurent Chambard, Laura Kosidowski
  • Patent number: 8377860
    Abstract: The disclosed invention relates to polymers with heterocyclic-containing groups, and to concentrates and lubricating oil compositions containing the polymers.
    Type: Grant
    Filed: August 18, 2008
    Date of Patent: February 19, 2013
    Assignee: The Lubrizol Corporation
    Inventors: Saleem Al-Ahmad, Marina Baum, Jonathan S. Vilardo, Patrick E. Mosier
  • Patent number: 8367592
    Abstract: To provide a lubricant for metallic material working and a method of press working a metallic material that makes it possible to improve the working accuracy of a press worked product and prolong the life of the die assembly beyond prior levels of life. [Solution] A lubricant for metallic material working comprises a mixture of a sulfur-based extreme pressure agent, an organic zinc compound, a calcium-based additive, and an ester compound, with lubricant base oil. The sulfur-based extreme pressure agent has a sulfur content of 5% by weight or higher based on the total weight of the lubricant. The organic zinc compound has a zinc content of 0.5% by weight or higher based on the total weight of the lubricant. The calcium-based additive has a calcium content of 0.5% by weight or higher based on the total weight of the lubricant. And the ester compound occupies a content of 1.0% by weight or higher based on the total weight of the lubricant.
    Type: Grant
    Filed: March 13, 2006
    Date of Patent: February 5, 2013
    Assignee: Toyota Boshoku Kabushiki Kaisha
    Inventors: Mami Kato, Masami Sakakibara, Teruo Fukaya, Yoshio Miyasaka
  • Publication number: 20120302475
    Abstract: An additive composition is provided for a lubricating oil that is easy to produce, does not have adverse effects, such as causing rubber seals to swell, and is excellent in storage stability. The additive composition contains a metal salt of a phosphorus-containing compound represented by formula (1) in an amount of 10 to 90 percent by mass of the composition, contained in a hydrocarbon solvent selected from a mineral oil, a hydrocarbon synthetic oil and a mixture thereof, the hydrocarbon solvent having a 100° C. kinematic viscosity of 0.5 to 4.5 mm2/s, a % CA of 3 or less, and a sulfur content of 0.05 percent by mass or less: wherein X1 and X2 are each independently oxygen or sulfur, R1, R2, R3, and R4 are each independently a straight-chain alkyl group having 3 to 12 carbon atoms, the average of the carbon number is 5 or greater, and M is a divalent metal atom.
    Type: Application
    Filed: October 8, 2010
    Publication date: November 29, 2012
    Applicant: JX NIPPON OIL & ENERGY CORPORATION
    Inventor: Kazuhiro Yagishita
  • Patent number: 8318646
    Abstract: A lubricating oil composition comprising (A) an oil of lubricating viscosity in a major amount; and, (B) as an additive component in a minor amount, an oil-soluble zinc salt of a dithiophosphoric acid, the dithiophosphoric acid being the reaction product of phosphorus pentasulphide with a mixture of at least one first alcohol of the formula ROH where R is an aliphatic hydrocarbyl group having at least four carbon atoms or is an alkaryl group, and at least one second alcohol which is an ester of a polyhydric alcohol.
    Type: Grant
    Filed: September 3, 2009
    Date of Patent: November 27, 2012
    Assignee: Infineum International Limited
    Inventors: Mark D. Andrews, Benjamin R. Elvidge
  • Patent number: 8293692
    Abstract: The present invention provides a lubricating oil composition comprising at least one type of base oil selected from mineral oils and synthetic oils, and a succinate ester and a sarcosinic acid as rust prevention agents. The succinate ester content is preferably set at 0.01 to 0.1 wt. %, and the sarcosinic acid content is preferably set at 0.001 to 0.01 wt. %. Further, they are preferably set such that the resulting weight ratio of the succinate ester content and sarcosinic acid content is 1:0.01 to 0.7. The lubricating oil composition according to the present invention shows excellent rust prevention properties and a satisfactorily long oxidation lifetime. Further it allows to attain a high level of anti-sludge performance and extreme pressure performance and lubrication performance, even when it is used for example in turbine bearings in combined cycle generators having multiplier gears operated under severe high temperature and high pressure conditions.
    Type: Grant
    Filed: July 18, 2007
    Date of Patent: October 23, 2012
    Assignee: Shell Oil Company
    Inventor: Tohru Ikai
  • Patent number: 8278254
    Abstract: Lubricated surfaces, lubricant compositions for lubricating a surface, and methods for increasing antiwear properties in lubricants. The lubricated surface is provided by a lubricant composition including a base oil of lubricating viscosity, at least one metal salt of phosphorothioic acid, and an amount of at least one hydrocarbon soluble titanium compound effective to provide an increase in antiwear properties of the lubricant composition. A ratio of titanium metal to phosphorus in the antiwear agent ranges from about 0.3:1 to about 1.5:1.
    Type: Grant
    Filed: September 10, 2007
    Date of Patent: October 2, 2012
    Assignee: Afton Chemical Corporation
    Inventors: Mark T. Devlin, Kenneth J. Garelick, Naresh C. Mathur, Jeffrey M. Guevremont
  • Patent number: 8242065
    Abstract: A grease composition, which comprises a base oil selected from at least one of synthetic hydrocarbon oil, ester-based synthetic oil, and ether-based synthetic oil; a thickening agent selected from at least one of lithium-based soap, lithium-based complex soap, and a urea-based compound; polytetrafluoroethylene resin powders having a number average molecular weight Mn of 20,000-100,000; and zinc dialkyldithiophosphate having straight or branched alkyl groups of at least 3 carbon atoms, preferably 5-13 carbon atoms, and more preferably 8-12 carbon atoms, has not only a distinguished lubricability, when applied to plastic members, but also a distinguished durability as given by change in friction coefficient and wear loss, after the sliding test.
    Type: Grant
    Filed: October 2, 2007
    Date of Patent: August 14, 2012
    Assignee: NOK Kluber Co., Ltd.
    Inventors: Wataru Sawaguchi, Toshio Nitta
  • 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
  • Publication number: 20120184473
    Abstract: Provided herein are lubricating oil compositions comprising a major amount of a base oil, at least one oil-soluble molybdenum compound and a zinc dialkyldithiophosphate compound, wherein the molybdenum content derived from the molybdenum compound is at least 10 ppm based on the total weight of the lubricating oil composition and the phosphorus content derived from the zinc dialkyldithiophosphate compound is about 200 to 500 ppm based on the total weight of the lubricating oil composition. The lubricating oil composition can further comprise at least one additive. Methods of making and using the lubricating oil compositions are also described.
    Type: Application
    Filed: March 23, 2012
    Publication date: July 19, 2012
    Inventors: Alexander B. Boffa, Kenji Takeoka
  • Patent number: 8222191
    Abstract: The present invention relates to a lubricating composition containing an oil of lubricating viscosity, a metal containing antiwear agent and a metal containing dispersant. The invention further provides for a method for lubricating a hydraulic system.
    Type: Grant
    Filed: November 18, 2010
    Date of Patent: July 17, 2012
    Assignee: The Lubrizol Corporation
    Inventor: Allan Barber
  • Publication number: 20120177915
    Abstract: Provided by the present invention is a lubricating oil composition showing a very low frictional coefficient when used as a lubricating oil for a low friction sliding material prepared by blending with an additive selected from a specific phosphorus-zinc-containing compound and a specific sulfur-containing compound, and a sliding mechanism having an excellent low frictional property in which a DLC film containing 5 to 50 atom % of hydrogen is formed or a sliding mechanism having an excellent low frictional property in which 1 to 30 atom % of tungsten (W) or molybdenum (Mo) is contained is provided by combining the above lubricating oil composition with a sliding member having a film of a specific low frictional sliding material on a sliding face.
    Type: Application
    Filed: September 13, 2010
    Publication date: July 12, 2012
    Applicants: NIPPON ITF INC., IDEMITSU KOSAN CO., LTD.
    Inventors: Moritsugu Kasai, Ryou Yamada, Masanori Tsujioka, Koji Miyake
  • 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: 8207099
    Abstract: A crankcase lubricant, an additive concentrate and a method for improving water tolerance of a lubricant. The lubricant includes a) a major amount of a base oil; b) an alkali or alkaline earth metal-containing detergent; c) a phosphorus-based wear preventative; and d) a surfactant agent other than (b). The lubricant has a weight ratio of alkali or alkaline earth metal content to phosphorus content, based on a total mass of lubricant, ranging from about 1.6 to about 5.0.
    Type: Grant
    Filed: September 22, 2009
    Date of Patent: June 26, 2012
    Assignee: Afton Chemical Corporation
    Inventor: John T. Loper
  • Patent number: 8178478
    Abstract: An internal combustion engine crankcase lubricating oil composition is disclosed. The crankcase lubricating oil composition has a TBN no greater than 6 and contains the following additives: (B1) a metal detergent system having a metal ratio no greater than 3, as the sole detergent system; (B2) an organic ashless friction modifier; (B3) an oil-soluble molybdenum friction modifier; and (B4) a metal dihydrocarbyl dithiophosphate.
    Type: Grant
    Filed: February 23, 2006
    Date of Patent: May 15, 2012
    Assignee: Infineum International Limited
    Inventors: Brian Lawrence, Christopher Locke
  • Patent number: 8138130
    Abstract: A multifunctional product is prepared by the reaction of an alkyl or alkenyl succinic acid derivative with a Fused-Ring Aromatic diamine, with a charge mole ratio of the diamine moiety in stoichiometric excess, under reactive conditions to thereby yield a multifunctional lubricant additive.
    Type: Grant
    Filed: March 31, 2005
    Date of Patent: March 20, 2012
    Assignee: Chevron Oronite Company LLC
    Inventors: Kenneth Dale Nelson, Edward A. Chiverton
  • 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: 8088720
    Abstract: The present invention is directed to method of making a green lubricant composition having improved wear protection and reduced phosphorus emissions.
    Type: Grant
    Filed: February 6, 2009
    Date of Patent: January 3, 2012
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Jacob J. Habeeb, Douglas E. Deckman, Brandon T. Weldon, William L. Maxwell
  • Patent number: 8084403
    Abstract: The embodiments described herein relate to particular formulations and methods that provide reduced engine deposits. The lubricant composition includes a base oil having a NOACK volatility of from about 5 to about 15 and a zinc dialkyl dithio phosphate composition. The zinc dialkyl dithio phosphate composition has at least about 65 mole percent of zinc dialkyl dithio phosphate compounds derived from all primary alcohols, wherein the zinc dialkyl dithio phosphate composition has greater than about 40 mole percent zinc dialkyl dithio phosphate compounds having alkoxy moieties derived from alcohols having four carbon atoms.
    Type: Grant
    Filed: May 1, 2009
    Date of Patent: December 27, 2011
    Assignee: Afton Chemical Corporation
    Inventors: William Y. Lam, Gregory H. Guinther
  • Patent number: 8058216
    Abstract: The present invention provides a grease composition capable of securely preventing an abnormal noise from being generated when it is cold and having a long life at a high temperature, and a rolling bearing in which this grease is enclosed. The grease composition having heat-resistant properties and performance of preventing the generation of a low-temperature abnormal noise contains a base oil, a thickener, and an additive, and is used for a rolling bearing. A worked penetration of the grease composition at 25° C. is 300 or less, and an unworked penetration thereof at ?20° C. is 200 or more. The grease-enclosed rolling bearing has an inner ring, an outer ring, rolling elements interposed between the inner ring and the outer ring, and the above-described grease composition enclosed on a periphery of the rolling elements. The grease-enclosed rolling bearing is used for an automotive electric auxiliary machine.
    Type: Grant
    Filed: December 15, 2005
    Date of Patent: November 15, 2011
    Assignee: NTN Corporation
    Inventor: Takayuki Kawamura
  • Patent number: 8034753
    Abstract: A low SAPS lubricating oil composition exhibiting excellent piston cleanliness having up to 0.3 wt. % sulfur, up to 0.08 wt. % phosphorus, and a sulfated ash content up to 0.80 wt. % comprising an overbased alkali metal or alkaline earth metal alkyl salicylate detergent having a low soap content.
    Type: Grant
    Filed: September 2, 2005
    Date of Patent: October 11, 2011
    Assignee: Infineum International Limited
    Inventor: Robert W. Shaw
  • Patent number: 7960322
    Abstract: This invention encompasses a lubricating oil composition contaminated with at least about 0.3 wt % of a biodiesel fuel or a decomposition product thereof, based on the total weight of the lubricating oil composition, comprising: a. a major amount of base oil of lubricating viscosity; and b. a diarylamine compound, wherein, the amount of the diarylamine compound is at least about 0.1 wt. %, based on the total weight of the lubricating oil composition. Methods of using the lubricating oil compositions are also described.
    Type: Grant
    Filed: October 26, 2007
    Date of Patent: June 14, 2011
    Assignee: Chevron Oronite Company LLC
    Inventor: Alexander B. Boffa
  • Patent number: 7960319
    Abstract: A lubricating oil composition favorably employable for trunk piston diesel engines contains an overbased sulfurized alkylphenol calcium salt, at least two (preferably three) overbased alkylsalicylic acid calcium salts having different base ratios and hydrocarbyl groups of different carbon atom numbers, a borated ashless dispersant, and a zinc dihydrocarbyldithiophosphate.
    Type: Grant
    Filed: December 13, 2007
    Date of Patent: June 14, 2011
    Assignee: Chevron Japan Ltd.
    Inventor: Hiroyuki Nagamatsu
  • 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: 7897549
    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: Grant
    Filed: March 24, 2008
    Date of Patent: March 1, 2011
    Assignee: R.T. Vanderbilt Company, Inc.
    Inventors: Thomas J. Karol, Steven G. Donnelly
  • 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: 7838474
    Abstract: This invention encompasses lubricating oil compositions comprising a base oil, a biodiesel fuel and a detergent. The detergent can be a metal phenate detergent such as alkaline metal phenates. The lubricating oil compositions can further comprise at least one antiwear agent such as zinc dialkyl dithiophosphate compounds. Methods of making and using the lubricating oil compositions are also described.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: November 23, 2010
    Assignee: Chevron Oronite Company LLC
    Inventor: Alexander B. Boffa
  • Patent number: 7838473
    Abstract: A lubricating oil composition of TBN 8-9 having up to 0.3 wt. % sulfur, up to 0.08 wt. % phosphorus, and a sulfated ash content up to 0.80 wt. %, comprising an overbased magnesium-containing lubricating oil detergent, and 2.5 to 4 wt. % of a nitrogen-containing ashless dispersant.
    Type: Grant
    Filed: September 14, 2005
    Date of Patent: November 23, 2010
    Assignee: Infineum International Limited
    Inventors: Robert W. Shaw, Michele Anne Thornhill
  • Patent number: 7838472
    Abstract: An oil composition for cutting and grinding by minimal quantity lubrication system and for sliding surface according to the present invention comprises an ester and a sulfur compound and/or a phosphorus compound.
    Type: Grant
    Filed: March 26, 2008
    Date of Patent: November 23, 2010
    Assignee: Nippon Oil Corporation
    Inventors: Hideo Yokota, Masanori Ibi, Satoshi Suda