The Nitrogen Is Bonded Directly To -c(=x)-, Wherein X Is Chalcogen (e.g., Amides, Etc.) Patents (Class 508/376)
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Patent number: 11518954Abstract: The invention is directed to a zinc-free lubricating composition for an internal combustion engine containing a phosphorus anti-wear agent, an ashless antioxidant, and a metal-free basic detergent. The lubricating composition provides wear protection, deposit control, and improved acid control with reduced levels of metal-containing additives.Type: GrantFiled: April 9, 2021Date of Patent: December 6, 2022Assignee: The Lubrizol CorporationInventors: Ewan E. Delbridge, Patrick E. Mosier
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Patent number: 10988702Abstract: The invention is directed to a zinc-free lubricating composition for an internal combustion engine containing a phosphorus anti-wear agent, an ashless antioxidant, and a metal-free basic detergent. The lubricating composition provides wear protection, deposit control, and improved acid control with reduced levels of metal-containing additives.Type: GrantFiled: July 19, 2016Date of Patent: April 27, 2021Assignee: The Lubrizol CorporationInventors: Ewan E. Delbridge, Patrick E. Mosier
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Patent number: 9394501Abstract: Provided herein are grease compositions comprising at least one estolide compound of formula: in which n is an integer equal to or greater than 0; m is an integer equal to or greater than 2; R1, independently for each occurrence, is selected from optionally substituted alkyl that is saturated or unsaturated, and branched or unbranched; R2 is selected from hydrogen and optionally substituted alkyl that is saturated or unsaturated, and branched or unbranched; and R3 and R4, independently for each occurrence, are selected from optionally substituted alkyl that is saturated or unsaturated, and branched or unbranched. Also provided are methods of making estolide-based grease products.Type: GrantFiled: February 6, 2012Date of Patent: July 19, 2016Assignee: Biosynthetic Technologies, LLCInventors: Jeremy Forest, Jakob Bredsguard
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Publication number: 20140057818Abstract: The invention provides a lubricating composition containing an antiwear agent and an oil of lubricating viscosity. The invention further relates to the use of the lubricating composition in an internal combustion engine, or a driveline device.Type: ApplicationFiled: December 16, 2011Publication date: February 27, 2014Applicant: THE LUBRIZOL CORPORATIONInventors: William R. S. Barton, Mark C. Davies, Christopher L. Friend, Ewan E. Delbridge, Patrick E. Mosier, Michael R. Sutton, Matthew D. Gieselman
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Publication number: 20140045737Abstract: The invention provides a lubricating composition containing an oil of lubricating viscosity and an ashless thiocarbamate compound having an optionally-substituted hydrocarbyl group on an S-atom and an optionally-substituted hydrocarbyl group on an N-atom. The invention further relates to a method of the lubricating an internal combustion engine with the lubricating composition.Type: ApplicationFiled: March 7, 2012Publication date: February 13, 2014Inventors: Yanshi Zhang, Seth L. Crawley, Richard Yodice
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Publication number: 20130303417Abstract: 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: ApplicationFiled: July 11, 2013Publication date: November 14, 2013Applicant: THE LUBRIZOL CORPORATIONInventors: William R.S. Barton, Seth L. Crawley, Patrick E. Mosier, Matthew D. Gieselman, Daniel J. Saccomando
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Publication number: 20130296208Abstract: 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: ApplicationFiled: July 11, 2013Publication date: November 7, 2013Applicant: THE LUBRIZOL CORPORATIONInventors: William R. S. Barton, Seth L. Crawley, Patrick E. Mosier, Matthew D. Gieselman, Daniel J. Saccomando
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Patent number: 7772171Abstract: 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: GrantFiled: July 17, 2006Date of Patent: August 10, 2010Assignee: The Lubrizol CorporationInventors: Saleem Al-Ahmad, Melody Wilk, Jack Kelley, John K. Pudelski, Paul E. Adams, Ewa Bardasz
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Patent number: 7598211Abstract: 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: GrantFiled: October 2, 2003Date of Patent: October 6, 2009Assignee: R.T. Vanderbilt Company, Inc.Inventors: Thomas J. Karol, Steven G. Donnelly
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Patent number: 7563752Abstract: Disclosed are lubricating oil compositions comprising a lubricating base oil, (A) a specific alkali metal or alkaline earth metal salicylate and/or an overbased or basic salt thereof in an amount of 0.005 to 5 percent by mass in terms of metal, (B) a phosphorus-containing anti-wear agent in an amount of 0.005 to 0.2 percent by mass in terms of phosphorus, (C) an amide compound in an amount of 0.01 to 1 percent by mass and containing sulfur in a total amount of 0.3 percent by mass or less, based on the total mass of the composition. The lubricating oil compositions are low sulfur lubricating oils which are extremely excellent in anti-wear properties and long drain properties and suitable particularly for an internal combustion engine.Type: GrantFiled: February 1, 2005Date of Patent: July 21, 2009Assignee: Nippon Oil CorporationInventor: Kazuhiro Yagishita
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Publication number: 20080176776Abstract: In order to provide for a grease composition which has a good compatibility with boots made of rubber or thermoplastic elastomer, and which also gives low wear and low friction, a grease composition for use in constant velocity joints is suggested, comprising a) a base oil composition; b) at least one tri-nuclear molybdenum compound of the formula Mo3SkLnQz, wherein L are independently selected ligands having organo groups with a sufficient number of carbon atoms to render the compound soluble or dispersible in the oil, n is from 1 to 4, k varies from 4 though 7, Q is selected from the group of neutral electron donating compounds such as amines, alcohols, phosphines, and ethers, and z ranges from 0 to 5 and includes non-stoichiometric values; c) at least one urea derivative thickener.Type: ApplicationFiled: October 8, 2007Publication date: July 24, 2008Applicants: GKN Driveline International GmbH, Kyodo Yushi Co., Ltd.Inventors: Jisheng E., Shinya Kondo, Frank Reher, Akira Taniguchi
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Patent number: 7183241Abstract: A lubricating oil with very low phosphorus content, and having long life 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 neutral and overbased metallic detergents, at least a zinc dialkyldithiocarbamate and a zinc dialkyldithiophosphate antiwear additive and at least a dihydrocarbylthiocarbamoyl.Type: GrantFiled: September 19, 2003Date of Patent: February 27, 2007Assignee: ExxonMobil Research and Engineering CompanyInventor: Stanley James Cartwright
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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: 7112558Abstract: The invention relates to a lubricating composition comprising a base oil of lubricating viscosity, a hydroxy-substituted dithiocarbamate, an organo-molybdenum compound, and optionally a phosphorous source.Type: GrantFiled: February 8, 2002Date of Patent: September 26, 2006Assignee: Afton Chemical Intangibles LLCInventor: Vincent J. Gatto
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Patent number: 6916767Abstract: A composition of matter is disclosed wherein the composition comprises an N-aromatic substituted acid amide compound selected from the group consisting of compounds of formula (I) wherein A and B are independently selected alkylene groups; R1 is selected from the group consisting of hydrogen, alkyl, alkylether, or ester; R2 is hydrogen if R1 is hydrogen; R2 is an alkyl primary amine if R1 is alkyl, alkylether, or ester; R3 and R4 are independently selected from the group consisting of hydrogen and alkyl; R5 is a sterically hindered phenolic group of formula (II) or formula (III) wherein X is CH2, S, NH, or O; and m, n, and p are independently selected integers equal to 0 or 1. These compositions may be used as such or they may be bound to a polymer backbone via a linking moiety.Type: GrantFiled: December 5, 2000Date of Patent: July 12, 2005Assignee: Uniroyal Chemical Company, Inc.Inventors: Karl J. Duyck, Theodore E. Nalesnik
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Patent number: 6855675Abstract: A lubricating oil composition that has excellent antiwear properties and is especially useful for internal combustion engine comprises a lubricating base oil and contains the following components: sulfoxymolybdenum dithiocarbamate, zinc dialkyldithiophosphate and a mixture of 100 to 50% by weight of calcium alkylsalicylate and 0 to 50% by weight of magnesium alkylsalicylate, the amount of molybdenum derived from the sulfoxymolybdenum dithiocarbamate being from 200 to 1000 ppm (weight basis) of the total weight of the composition, the amount of phosphorus derived from the zinc dialkyldithiophosphate being from 0.04 to 15% by weight of the total weight of the composition, and the total amount of the calcium alkylsalicylate and the magnesium alkylsalicylate being from 1 to 10% by weight of the total weight of the composition.Type: GrantFiled: May 24, 1995Date of Patent: February 15, 2005Assignee: TonenGeneral Sekiyu K.K.Inventors: Michiya Yamada, Satoshi Asano, Hirotaka Tomizawa
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Publication number: 20040224859Abstract: A urea grease composition is provided containing a lubricating base oil and from 2 to 30 wt.Type: ApplicationFiled: December 4, 2003Publication date: November 11, 2004Inventors: Kouichi Numazawa, Kazushige Ohmura, Takahiro Ozaki, Keiji Tanaka
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Patent number: 6706672Abstract: A composition comprising: a high-sulfur API Group I mineral oil base stock; a molybdenum dithiocarbamate in an amount suitable to provide 50 to about 600 ppm molybdenum to the composition; a succinimide dispersant based on a polyolefin-substituted succinic structure, where the polyolefin has a number average molecular weight of at least 1500; a zinc dialkyldithiophosphate derived from at least one secondary alcohol; and a hindered phenol, alkylated aromatic amine, or sulfurized olefin oxidation inhibitor, is capable of passing a Sequence III test.Type: GrantFiled: March 6, 2002Date of Patent: March 16, 2004Assignee: The Lubrizol CorporationInventor: Jack C. Kelley
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Patent number: 6696393Abstract: Disclosed are methods and lubricant compositions for reducing wear in internal combustion engines lubricated with a low phosphorus content lubricating oil. The lubricant compositions of this invention comprise a synergistic combination of a complex of a molybdenum/nitrogen containing compound and at least one phosphorus-containing compound wherein the total phosphorus employed in the composition is no more than about 0.06 weight percent based on the total weight of the composition.Type: GrantFiled: August 1, 2002Date of Patent: February 24, 2004Assignee: Chevron Oronite Company LLCInventor: Alexander B. Boffa
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Patent number: 6667282Abstract: Disclosed herein is a composition comprising: (A) a lubricant, and (B) at least one alkyl hydrazide compound of the formula: wherein R1 is a hydrocarbon or functionalized hydrocarbon of from 1 to 30 carbon atoms, R2 and R3 are independently selected from the group consisting of hydrocarbon or functionalized hydrocarbons of from 1 to 30 carbon atoms and hydrogen.Type: GrantFiled: May 31, 2001Date of Patent: December 23, 2003Assignee: Crompton CorporationInventor: Theodore E. Nalesnik
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Patent number: 6649575Abstract: A low-phosphorus lubricant comprises: an oil of lubricating viscosity; a nitrogen-containing and a nitrogen-free dispersant; a metal dihydrocarbyl dithiophosphate; and a hydrocarbyl-substituted carboxylic acid derivative, the ratio of the dispersants being such as to provide suitable fluoroelastomer seal compatibility.Type: GrantFiled: December 5, 2001Date of Patent: November 18, 2003Assignee: Infineum International Ltd.Inventor: Robert Robson
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Patent number: 6605574Abstract: Disclosed is a grease sealed bearing for automobile that has the high temperature resistance as well as shear stability, and prevents the noise at low temperature as well as the brittle flaking under high speed rotation and high load. The grease comprises a base oil containing a synthesized hydrocarbon oil and one or more ester oils at a weight ratio of 0.1 to 0.49:0.9 to 0.51; 5 to 30% by weight of a urea based thickener, and 0.1 to 10% by weight of dithiozinc phosphate based on the whole grease. The grease sealed bearing for automobile is obtained by sealing a bearing used in a device driven by an automobile engine with the grease.Type: GrantFiled: January 16, 2002Date of Patent: August 12, 2003Assignee: NTN CorporationInventors: Mitsunari Asao, Hidenobu Mikami, Takayuki Kawamura, Takahiro Koremoto, Kunio Takemura
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Patent number: 6605573Abstract: A synthetic lubricating oil composition for internal combustion engines, comprises an organomolybdenum compound, a zinc dithiophosphate and a base stock obtained by blending an ester having a kinematic viscosity of from 8 cSt to 35 cSt at 100° C. and a saponification value of 200 mg-KOH/g or smaller with a poly (&agr;-olefin) and/or a highly-refined mineral oil.Type: GrantFiled: December 9, 1997Date of Patent: August 12, 2003Inventors: Katsuya Koganei, Makoto Kanbara
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Publication number: 20030134754Abstract: A composition comprising: a high-sulfur API Group I mineral oil base stock; a molybdenum dithiocarbamate in an amount suitable to provide 50 to about 600 ppm molybdenum to the composition; a succinimide dispersant based on a polyolefin-substituted succinic structure, where the polyolefin has a number average molecular weight of at least 1500; a zinc dialkyldithiophosphate derived from at least one secondary alcohol; and a hindered phenol, alkylated aromatic amine, or sulfurized olefin oxidation inhibitor, is capable of passing a Sequence III test.Type: ApplicationFiled: March 6, 2002Publication date: July 17, 2003Applicant: The Lubrizol CorporationInventor: Jack C. Kelley
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Patent number: 6569819Abstract: Lubricant compositions comprise a lubricant base oil, and (A) a mono substituted amide type bissuccinimide in an amount from 0.5 to 20 percent by mass, (B) zinc dithiophosphate in an amount from 0.05 to 0.3 percent by mass of phosphorus, and (C) a metal-based detergent in an amount form 0.5 to 4.0 percent by mass of sulfated ash, based on the total mass of the composition. Lubricant compositions preferably further comprises (D) a dispersant type viscosity index improver in an amount from 0.1 to 20 percent by mass, based on the total mass of the composition.Type: GrantFiled: September 27, 2001Date of Patent: May 27, 2003Assignee: Nippon Mitsubishi Oil CorporationInventors: Kazuhiro Yagishita, Jinichi Igarashi, Osamu Kurosawa
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Patent number: 6531428Abstract: A low phosphorous lubricating oil composition for internal combustion engines comprising an alkylthiocarbamate compound of the formula: wherein each of R1, R2, R3, and R4 independently represents an alkyl group of 1-18 carbon atoms, and (X) represents S, S—S, S—CH2—S, S—CH2CH2—S, S—CH2CH2CH2—S, or S—CH2CH(CH3)—S, and additive compositions and additive packages utilizing the above compound.Type: GrantFiled: April 4, 1994Date of Patent: March 11, 2003Assignee: Chevron Oronite Company LLCInventors: Morikuni Nakazato, Jiro Magarifuchi, Akihiro Mochizuki, Hiroshi Tanabe
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Publication number: 20030013620Abstract: A lubricating oil composition comprising a major amount of an oil of lubricating viscosity and an additive system comprising (A) from about 0.1 to about 5 % by weight of a detergent composition comprising at least two metal overbased compositions wherein said detergent composition consists essentially of (A-1) at least one alkali metal overbased detergent and (A-2) at least one calcium overbased detergent, wherein the ratio of total base number on a per 100 TBN and diluent-free basis contributed by the alkali metal detergent to the total base number contributed by the calcium detergent ranges from about 99.5-20 to about 0.5-80; (B) from about 1 to about 10 % by weight of a succinimide dispersant; and (C) from about 0.1 to about 5 % by weight of a metal dihydrocarbyl dithiophosphate of the formula (I) wherein R1 and R2 are each, independently, hydrocarbyl groups containing from 3 to 13 carbon atoms, M is a metal and n is an integer equal to the valence of M.Type: ApplicationFiled: May 23, 2002Publication date: January 16, 2003Inventor: Melody A. Wilk
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Publication number: 20030008785Abstract: Disclosed herein is a composition comprising:Type: ApplicationFiled: May 31, 2001Publication date: January 9, 2003Applicant: CROMPTON CORPORATION.Inventor: Theodore E. Nalesnik
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Publication number: 20020019320Abstract: A lubricating oil composition having a low P content of 0.01 to 0.1 wt. %, and a sulfated ash of 0.1 to 1 wt. %, which is composed of a) a major amount of mineral base oil having a low S content of at most 0.1 wt. %; b) an ashless alkenyl or alkyl-succinimide dispersant; c) a metal-containing detergent (non-sulfurized alkali metal or alkaline earth metal salt of an alkylsalicylic acid and/or non-sulfurized alkali metal or alkaline earth metal salt of an alkylphenol derivative having a Mannich base structure); d) Zn-DTP; e) an oxidation inhibitor (phenol compound and/or amine compound) and wherein the sulfur content is 0.01 to 0.3 wt %. The lubricating oil composition shows good high temperature detergency notwithstanding its low S, P, and sulfated ash content, and is favorably employable in diesel engines using fuel of an extremely low sulfur content.Type: ApplicationFiled: May 30, 2001Publication date: February 14, 2002Inventors: Morikuni Nakazato, Shigeru Iwamoto, Satoshi Hirano
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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: 6323162Abstract: The present invention provides for a lubricant oil composition for internal combustion engines, that resists oxidation in the presence of NOx and evaporation characteristics, and controls poisoning of a three-way catalyst system for occluding/reducing NOx and formation of deposit in an air intake system. The lubricant oil composition for internal combustion engines, comprises a base oil, which contains aromatic compounds at 1 wt. % or less, sulfur at 10 ppm or less, and paraffin and monocyclic naphthene compounds at 50 wt. % or more as total content, and has a kinematic viscosity of 2 to 50 mm2/s at 100° C. and evaporated quantity of 16 wt. % or less determined by the NOACK evaporation test, wherein the base oil is incorporated with a zinc dithiophosphate at 0.04 to 0.10 wt. % as phosphorus, a calcium phenate and/or calcium sulfonate having a total basic number of 100 to 400 mg KOH/g at 1 to 10 wt. %, and a polyalkenyl succinimide having a boron/nitrogen wt. ratio of 0 to 1.Type: GrantFiled: May 30, 2000Date of Patent: November 27, 2001Assignee: TonenGeneral Sekiyu K.K.Inventors: Sougawa Yasunori, Katsuya Arai
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Publication number: 20010036906Abstract: A heavy duty diesel engine lubricating oil composition having no more than 0.10 wt. % phosphorus comprises an ashless dispersant, a neutral calcium phenate, an overbased calcium or magnesium sulfonate, a metal dihydrocarbyldithiophosphate, and a phenolic or aminic antioxidant.Type: ApplicationFiled: March 14, 2001Publication date: November 1, 2001Inventors: Christopher J. Locke, Isabel P. MacDonald
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Patent number: 6207625Abstract: The present invention relates to a lubricant oil composition, comprising a base oil composed of a mineral and/or synthetic oil incorporated with at least two types of additives (A) and (B) described below, characterized by being used for diesel engines operating with large quantities of soot in their oil, in particular those equipped with an exhaust gas recirculation (EGR) system: (A) sulfurized oxymolybdenum dithiocarbamate at 0.03 to 0.50 wt % as Mo, based on the whole composition, and (B) zinc dialkyl dithiophosphate at 0.04 to 0.50 wt % as P, also based on the whole composition.Type: GrantFiled: December 10, 1999Date of Patent: March 27, 2001Assignee: Tonen CorporationInventors: Satoshi Ogano, Toshiaki Kuribayashi
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Patent number: 6187726Abstract: Compounds and lubricant compositions are disclosed that comprise a substituted linear thiourea of the structure wherein R1, R2, and R4 are independently selected from the group consisting of alkyl, alkenyl, aryl, alkaryl, aralkyl, and hydrogen; R3 is selected from the group consisting of alkyl, alkenyl, and combinations thereof; X is selected from the group consisting of (i) methylene, if, and only if, R3 is alkenyl, (ii) oxygen, and (iii) sulfur; and A is selected from the group consisting of alkylene and aryl.Type: GrantFiled: November 12, 1999Date of Patent: February 13, 2001Assignee: CK Witco CorporationInventors: Theodore E. Nalesnik, Franklin H. Barrows
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Patent number: 6114288Abstract: Lubricating oil composition for internal combustion engines having a high temperature shear viscosity of from 2.1 to less than 2.9 mPas wherein the lubricating base oil comprises 1) a zinc dialkyldithiophosphate, 2) a metallic detergent chosen from calcium alkylsalicylate and a mixture of calcium alkylsalicylate and magnesium alkylsalicylate and optionally 3) friction modifier.Type: GrantFiled: May 3, 1999Date of Patent: September 5, 2000Assignee: Shell Research LimitedInventors: Takashi Fujitsu, Koichi Kubo, Mitsuhiro Nagakari
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Patent number: 6063741Abstract: An engine oil composition is composed of: (1) at least one oil selected from the group consisting of a mineral oil and a synthetic lubricant as a base oil; (2) a molybdenum dithiocarbamate in an amount of 50 to 2000 ppm by weight when calculated as molybdenum (Mo), relative to the total weight of the engine oil composition; (3) zinc dithiophosphate in an amount of 0.01 to 0.2 wt % when calculated as phosphorus (P), relative to the total amount of the engine oil composition; and (4) an ashless organic polysulfide compound in an amount of 0.01 to 0.4 wt % when calculated as sulfur (S), relative to the total amount of the engine oil composition.Type: GrantFiled: November 7, 1997Date of Patent: May 16, 2000Assignees: Japan Energy Corporation, Toyota Jidosha Kabushiki KaishaInventors: Yasushi Naitoh, Kenyu Akiyama
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Patent number: 6060437Abstract: 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: GrantFiled: July 29, 1998Date of Patent: May 9, 2000Assignee: Exxon Chemical Patents, Inc.Inventors: Robert Robson, Trevor Anthony Brettell
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Patent number: 6004910Abstract: A lubricating oil having an ashless nitrogenous TBN source together with ash containing detergent having a TBN in excess of 100, a source of magnesium, and metal dihydrocarbyl dithiophosphate with predominantly or exclusively secondary hydrocarbyl groups is described. It comprises a major amount of an oil of lubricating viscosity having a sulfated ash content between 0.35 and 2 mass percent and A) a nitrogenous TBN source selected from the group consisting of ashless nitrogen containing dispersants, ashless nitrogen containing dispersant viscosity modifiers, oil soluble aliphatic, oxyalkyl, or arylalkyl amines and mixtures thereof; B) a metal salt of an oil soluble acid having a TBN in excess of 100; C) at least 500 ppm (mass) magnesium; and D) at least one metal dihydrocarbyl dithiophosphate. The nitrogenous TBN source provides at least about 1.5 TBN to the finished lubricant. The metal salt of an oil soluble acid provides at least about 40% of the total TBN of the composition.Type: GrantFiled: March 7, 1995Date of Patent: December 21, 1999Assignee: Exxon Chemical Patents Inc.Inventors: Ricardo Alfredo Bloch, Arunas T. Lapinas, Edward F. Outten, Andrew James Dalziel Ritchie, Malcolm Waddoups
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Patent number: 5955404Abstract: Lubricant or fuel compositions comprising 1) an organo, ring-substituted diphenyl sulfide, e.g. a monoalkyldiphenyl sulfide; 2) a dispersant component comprising at least one polymer-substituted succinimide, succinamide and/or succinic acid ester in which the alcohol or phenol moiety of the ester group may optionally contain amide, imide or amine nitrogen functionality, or mixtures of said amide, imide and/or ester; and 3) a dithiophosphate, e.g., a zinc dithiophosphate. The compositions have superior antiwear and extreme pressure properties.Type: GrantFiled: November 6, 1997Date of Patent: September 21, 1999Assignee: Mobil Oil CorporationInventors: Andrew G. Horodysky, Ross A. Kremer
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Patent number: 5952273Abstract: A grease composition for constant velocity joints comprising: (a) a base oil; (b) a diurea thickener of the formula (1):R.sup.1 NH--CO--NH--C.sub.6 H.sub.4 -p-CH.sub.2 --C.sub.6 H.sub.4 -p-NH--CO--NHR.sup.2wherein R.sup.1 and R.sup.2 may be the same or different and represent aryl groups having 6 or 7 carbon atoms or cyclohexyl groups; (c) a molybdenum dialkyldithiocarbamate; (d) molybdenum disulfide; (e) at least one extreme pressure agent selected from the group consisting of zinc dithiophosphates, and sulfur-nitrogen extreme pressure agents; and (f) a phosphorus-free sulfur extreme pressure agent. The grease composition has low coefficient of friction, good performance for reducing induced thrust and high durability.Type: GrantFiled: March 25, 1998Date of Patent: September 14, 1999Assignees: Kyodo Yushi Co., Ltd,, NTN CorporationInventors: Yoichi Suzuki, Takashi Okaniwa, Yukio Asahara, Keizo Nagasawa, Mitsuhiro Kakizaki, Kiyoshi Takeuchi, Yukio Hasegawa, Shinichi Takabe
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Patent number: 5902776Abstract: This invention relates to a composition, comprising:(A) a metal, amine or ammonium salt of a compound represented by the formula ##STR1## wherein in Formula (A-I), X.sup.1, X.sup.2 and X.sup.3 and X.sup.4 are independently O or S, X.sup.1 and X.sup.2 can be NR.sup.3, a and b are independently zero or 1, and R.sup.1, R.sup.2 and R.sup.3 are independently hydrocarbyl groups and R.sup.3 can be hydrogen; and(B) a thiocarbamate represented by the formulaR.sup.1 R.sup.2 N--C(X)S--(CR.sup.3 R.sup.4).sub.a Z (B-I)wherein in Formula (B-I), R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are independently hydrogen or hydrocarbyl groups, provided that at least one of R.sup.1 and R.sup.2 is a hydrocarbyl group; X is O or S; a is 1 or 2; and Z is an activating group, a hydrocarbyl group, a hydroxy hydrocarbyl group, a hetero group, or a --SC(X)--NR.sup.1 R.sup.2 group; provided that when a is 2, Z is an activating group.Type: GrantFiled: May 7, 1998Date of Patent: May 11, 1999Assignee: The Lubrizol CorporationInventors: Brent R. Dohner, James A. Supp
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Patent number: 5858931Abstract: A lubricating composition of the present invention comprises a base oil for lubricating oil or base grease; at least one molybdenum compound as component (A) selected from the group consisting of a selected sulfurized oxymolybdenum dithiocarbamate, a selected sulfurized oxymolybdenum dithiophosphate and a selected molybdenum amine compound; and a (poly)glycerol ether and/or a (poly)oxyalkylene glycol monoalkyl ether as component (B).Type: GrantFiled: August 5, 1996Date of Patent: January 12, 1999Assignee: Asahi Denka Kogyo K.KInventors: Noriyoshi Tanaka, Aritoshi Fukushima, Yukio Tatsumi, Kazuhisa Morita, Yoko Saito
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Patent number: 5767045Abstract: Hydraulic fluid compositions and additive concentrates are described that provide improved wet filtrability. The additive components comprise a mixture formed from at least (a) a zinc dihydrocarbyl dithiophosphate anti-wear agent, (b) a succinimide compound, and optionally (c) one or more alkali metal or alkaline earth metal-containing detergents.Type: GrantFiled: December 2, 1996Date of Patent: June 16, 1998Assignee: Ethyl Petroleum Additives LimitedInventor: Helen T. Ryan
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Patent number: 5744430Abstract: There is provided a composition having therein a base oil with a specified kinematic viscosity and with a specified total amount of aromatics, comprising, in specified amounts based on the total weight of the composition:(b) an alkaline earth metal salicylate detergent;(c) a zinc dialkyldithiophosphate;(d) a succinimide ashless dispersant containing a polybutenyl group having a specified number-average molecular weight;(e) a phenol ashless antioxidant;(f) a molybdenum dithiocarbamate friction modifier; and(g) a viscosity index improver in such an amount that the kinematic viscosity of said composition ranges from 5.6 to 12.5 mm.sup.2 /s at 100.degree. C. The present invention provides an engine oil which has excellent fuel consumption and maintains the fuel consumption for a long period of time.Type: GrantFiled: April 25, 1996Date of Patent: April 28, 1998Assignee: Nippon Oil Co., Ltd.Inventors: Kiyoshi Inoue, Yasuhisa Yamada, Akira Yaguchi, Masakuni Hirata
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Patent number: 5629272Abstract: An engine oil composition which comprises a metal-containing detergent, zinc dithiophosphate, and a boron-containing ashless dispersant dissolved or dispersed in a base oil; characterized by further containing an antiwear agent having an aliphatic amide compound and either a dithiocarbamate compound or an ester derived from a fatty acid and boric acid.Type: GrantFiled: December 3, 1993Date of Patent: May 13, 1997Assignee: Oronite Japan LimitedInventors: Morikuni Nakazato, Jiro Magarifuchi, Yoshifumi Isozaki
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Patent number: 5612298Abstract: This invention relates to a grease for constant velocity joints which comprises of organic molybdenum compound, antimondialkyl dithiocarbamate (referred as Sb-DTC), zinc dithiophosphate and organic sulfide with conventionally used lithium grease or lithium aluminum grease and particularly as an organic molybdenum compound is used molybdenum dialkyldithio carbamate having good thermal stability, low friction coefficient and good extreme pressure.Type: GrantFiled: December 8, 1995Date of Patent: March 18, 1997Assignee: Hyundai Motor CompanyInventors: Dae Y. Bae, Sung G. Son
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Patent number: 5569405Abstract: An engine oil composition having a base oil, an ashless dispersant, a metal-containing detergent, zinc dithiophosphate and a sulfur-containing phenol derivative. Examples of sulfur-containing phenol derivative include 2,4-bis{(octylthio)methyl}-o-cresol, 2,2-thiodiethylenebis{3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate}, and tridecyl 2-(3,5-di-ti-butyl-4-hydroxybenzylthio)acetate.Type: GrantFiled: August 27, 1993Date of Patent: October 29, 1996Assignee: Chevron Chemical CompanyInventors: Morikuni Nakazato, Takahiro Muramatsu, Shigeru Iwamoto