Overbased Or Carbonated Carboxylates Patents (Class 508/460)
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Patent number: 6730638Abstract: A lubricating composition for internal combustion engines especially useful with fuels having less than 350 ppm sulfur comprises a lubricating oil basestock, a boron containing ashless dispersant, a molybdenum containing friction reducing agent, a metal type detergent and zinc dithiophosphate.Type: GrantFiled: January 24, 2003Date of Patent: May 4, 2004Assignee: ExxonMobil Research and Engineering CompanyInventors: Liehpao O. Farng, Andrew Jackson, Willie A. Givens, Jr., Douglas E. Deckman, William H. Buck
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Patent number: 6720294Abstract: A lubricating oil composition comprising, as a detergent, metal salt of a long chain hydrocarbyl-substituted organic acid, at a concentration of not more than 15 mmol/kg oil.Type: GrantFiled: April 27, 1999Date of Patent: April 13, 2004Assignee: Infineum USA L.P.Inventors: Malcolm Willars, Peter Sant
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Publication number: 20040063589Abstract: Lubricant compositions are made containing, as a metal protectant additive, an overbased amorphous alkaline earth metal salt of fatty acid. The additive is added in either a liquid or powdered form to the base oil in the composition. The overbased additive in the lubricating composition serves as a metal protectant to provide detergency, friction-modifying and acid-neutralizing properties to the compositions.Type: ApplicationFiled: September 19, 2003Publication date: April 1, 2004Applicant: OMG Americas, Inc.Inventors: Chester E. Ramey, James E. Reddy
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Publication number: 20040053795Abstract: Shelf stable haze free liquids of overbased alkaline earth metal salts are obtained by reacting metal base with fatty acids in the presence of liquid hydrocarbon and aliphatic alcohols having at least 8 carbon atoms to provide overbased liquids essentially free of a phenol or a phenolic derivative. Stabilizer compositions containing the overbased liquids and mixed metal stabilizers of zinc, cadmium and tin are provided for stabilizing halogen-containing polymers.Type: ApplicationFiled: August 18, 2003Publication date: March 18, 2004Applicant: OMG Americas, Inc.Inventors: James E. Reddy, Chester E. Ramey, Lawrence A. Dominey
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Publication number: 20040048753Abstract: Soot induced kinematic viscosity increase of lubricating oil compositions for diesel engines equipped with EGR systems can be ameliorated by selection of viscosity modifier, lubricating oil flow improvers, detergents and/or dispersants.Type: ApplicationFiled: September 10, 2002Publication date: March 11, 2004Inventors: Andrew J.D. Ritchie, Jai G. Bansal, Jacob Emert, Glen P. Fetterman, Antonio Gutierrez, Matthew D. Irving, Christopher J. Locke, Michael T. Minotti
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Patent number: 6692654Abstract: Refrigerating machine oils comprising an ester oil for use with a refrigerant containing carbon dioxide are described. The refrigerating machine oils have excellent lubricity, miscibility with a refrigerant, stability and electric insulation.Type: GrantFiled: February 28, 2002Date of Patent: February 17, 2004Assignee: Nippon Mitsubishi Oil CorporationInventors: Tomomasa Osumi, Hiroyuki Hirano, Yasuyuki Watanabe
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Publication number: 20040029747Abstract: A modified lubricating oil detergent that is the reaction product of an oil soluble detergent comprising an alkali- or alkaline earth metal hydrocarbyl phenate, carboxylate or sulfonate and an &agr;, &bgr;-unsaturated carbonyl compound; and lubricating oil compositions containing a combination of such a modified detergent and a nitrogen-containing dispersant.Type: ApplicationFiled: August 6, 2002Publication date: February 12, 2004Inventors: Jacob Emert, Antonio Gutierrez
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Publication number: 20040014614Abstract: A lubricant additive gel formed by the gellation of two or more lubricant additives for the slow release of the additive components into a fluid. The lubricant additive gel slowly releases into its component lubricant additives when contacted with the fluid such as an oil thereby serving as a lubricant fluid such as an oil thereby.Type: ApplicationFiled: July 16, 2002Publication date: January 22, 2004Inventors: James D. Burrington, Bruce H. Grasser, Herman F. George, John R. Martin, John K. Pudelski, James P. Roski, Barbara L. Soukup, Melinda E. Bartlett
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Patent number: 6660697Abstract: A lubricating oil composition suitable for a trunk piston marine diesel engine. The lubricating oil composition comprises an admixture of: (A) an oil of lubricating viscosity, in a major amount; and (B) an oil-soluble complex overbased metal detergent additive, in a minor amount. The composition is substantially dispersant-free or contains 1, or less than 1, preferably less than 0.5, mass % based on the mass of the compositions, of a dispersant. The composition has a TBN in the range of 3.5 to 100, preferably 8 to 100.Type: GrantFiled: November 20, 2001Date of Patent: December 9, 2003Assignee: Infineum International Ltd.Inventors: Adrian Dunn, Laurent Chambard, Terence Garner
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Patent number: 6649585Abstract: Processes for preparing superbasic zinc soaps are disclosed. The processes described comprise: (a) providing a basic zinc carbonate; (b) providing at least one organic carboxylic acid; and (c) reacting the basic zinc carbonate and the at least one organic carboxylic acid at a temperature of from about 100° C. to about 200° C. The use of such soaps for stabilizing halogen-containing plastic compositions is also described.Type: GrantFiled: December 10, 2001Date of Patent: November 18, 2003Assignee: Cognis Deutschland GmbH & Co. KGInventors: Peter Daute, Joerg-Dieter Klamann, Peter Wedl, Ralf Picard
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Patent number: 6645922Abstract: A lubricating oil composition suitable for a two-stroke cross-head marine diesel engine. The lubricating oil composition comprises a base oil and an oil-soluble overbased metal detergent additive in the form of a complex wherein the basic material of the detergent is stabilized by more than one surfactant.Type: GrantFiled: January 23, 2002Date of Patent: November 11, 2003Assignee: Infineum International Ltd.Inventors: Adrian Dunn, Laurent Chambard, Yolanda Owen
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Patent number: 6645923Abstract: A gas-fuelled engine lubricating oil composition having a TBN in the range of 2 to 20 and comprising: (A) oil of lubricating viscosity; (B) a salicylate detergent having a TBN of 95 or less; (C) a detergent having a TBN of greater than 250; (D) an ashless dispersant; and (E) an anti-wear additive.Type: GrantFiled: October 4, 2001Date of Patent: November 11, 2003Assignee: Infineum International Ltd.Inventors: Adrian Dunn, Laurent Chambard, Terence Garner
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Patent number: 6642187Abstract: This invention relates to a lubricating composition comprising a major amount of an oil of lubricating viscosity, (A) at least one organic polysulfide comprising at least about 90% dihydrocarbyl trisulfide, from about 0.1% up to about 8% dihydrocarbyl disulfide, and less than about 5% dihydrocarbyl higher polysulfides, and (B) at least one overbased metal composition, at least one phosphorus or boron compound, or mixtures of two or more thereof. The invention also relates to concentrates and greases containing the above combination. The invention also relates to methods of making the organic polysulfide.Type: GrantFiled: December 24, 1996Date of Patent: November 4, 2003Assignee: The Lubrizol CorporationInventors: James J. Schwind, Ross L. Beebe
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Patent number: 6642190Abstract: Oil-soluble overbased salicylate-phenate detergent additives comprising a complex in which the basic material of the detergent is stabilized by both salicylate and phenate surfactants. The mass % of the salicylate, as a percentage of the total surfactant mass, is at least 50, preferably greater than 50, provided that, when said mass % is less than 60, the TBN: mass % surfactant ratio of the detergent is 10 or less.Type: GrantFiled: January 31, 2002Date of Patent: November 4, 2003Assignee: Infineum International Ltd.Inventors: Steve Hammond, Mark A. Price, Philip Skinner
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Patent number: 6638897Abstract: The lubricating oil of the present invention exhibits an excellent effect of agglomerating solid impurity particles it contains to a sufficiently large size as to be captured and removed by an oil filter.Type: GrantFiled: July 9, 1999Date of Patent: October 28, 2003Assignee: TonenGeneral Sekiyu K.K.Inventors: Satoshi Ogano, Nobuchika Kawagoishi, Makota Yoneda, Toshiaki Kuribayashi
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Publication number: 20030199399Abstract: A lubricating oil composition comprising a) an oil of lubricating viscosity having a viscosity index of at least 95; b) at least one calcium detergent; c) at least one oil soluble molybdenum compound; d) at least one organic ashless nitrogen-free friction modifier; and e) at least one metal dihydrocarbyldithiophosphate compound, the composition having a Noack volatility of about 15 wt. % or less, from 0.05 to 0.6 wt. % calcium from the calcium detergent, molybdenum in an amount of at least 10 ppm from the molybdenum compound, and phosphorus from the metal dihydrocarbyldithiophosphate compound in an amount up to about 0.1 wt. %.Type: ApplicationFiled: April 5, 2002Publication date: October 23, 2003Inventors: Rolfe J. Hartley, Malcolm Waddoups
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Publication number: 20030195126Abstract: A lubricant additive composition comprising (a) a carboxylated detergent-dispersant obtained by (i) neutralizing alkylphenols using an alkaline earth base in the presence of at least one carboxylic acid that contains from one to four carbon atoms but in the absence of alkali base, dialcohol, and monoalcohol, forming an intermediate product, then (ii) carboxylating the intermediate product using carbon dioxide so that at least 20 mole percent of the original alkylphenol starting material has been converted to single aromatic-ring hydrocarbyl salicylate; and (b) an overbased, non-sulfonate-containing detergent such as, for instance, a hydrocarbyl phenate-carboxylate; a medium overbased salicylate having a total base number of about 50 to 170; a high overbased salicylate having a total base number greater than 170; or an overbased sulfurized hydrocarbyl phenate of alkaline earth metals; and combinations and mixtures thereof.Type: ApplicationFiled: April 12, 2002Publication date: October 16, 2003Inventor: Cornelis Hendrikus Maria Boons
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Publication number: 20030191032Abstract: The present invention concerns a detergent additive for lubricating oil compositions comprising at least two of low, medium, and high TBN detergents. Preferably the detergent is a calcium salicylate. The present invention also concerns lubricating oil compositions comprising such detergents, and at least one of Group II base stock, Group III base stock, or wax isomerate base stock.Type: ApplicationFiled: January 28, 2003Publication date: October 9, 2003Inventors: Douglas E. Deckman, Mark D. Winemiller, William L. Maxwell, William H. Buck, David J. Baillargeon
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Publication number: 20030186821Abstract: A gas engine lubricating oil composition having a boron content of more than 95 ppm, the gas engine lubricating oil composition comprising: a major amount of a lubricating oil having a viscosity index of 80 to 120, and including at least 90 mass percent of saturates and 0.03 mass percent or less of sulphur; and at least one metal detergent.Type: ApplicationFiled: March 3, 2003Publication date: October 2, 2003Inventors: Yolanda Owen, Laurent Chambard
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Publication number: 20030176297Abstract: A lubricating oil composition having less than 0.2 wt. % sulfur, less than 50 ppm chlorine, less than 50 ppm phosphorus, a NOACK volatility of 15 wt. % or less comprising an organo-molybdenum compound, an overbased calcium or magnesium salicylate, a dispersant and a supplemental antioxidant.Type: ApplicationFiled: February 20, 2002Publication date: September 18, 2003Inventors: Rolfe J. Hartley, Malcolm Waddoups, Ricardo A. Bloch, Roger W. Glyde, Robert Robson
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Publication number: 20030171228Abstract: The present invention concerns a detergent additive for lubricating oil compositions comprising at least two of low, medium, and high TBN detergents. Preferably the detergent is a calcium salicylate. The present invention also concerns lubricating oil compositions comprising such detergents, and at least one of Group II base stock, Group III base stock, or wax isomerate base stock.Type: ApplicationFiled: December 12, 2002Publication date: September 11, 2003Inventors: Douglas Edward Deckman, Mark D. Winemiller, William L. Maxwell, William H. Buck, David J. Baillargeon
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Patent number: 6613724Abstract: A gas-fuelled engine lubricating oil composition that is substantially free from anti-oxidant additives. The gas-fuelled engine lubricating oil composition exhibits good resistance to oil oxidation and nitration and improved corrosion resistance. The composition includes: (i) an oil of lubricating viscosity; (ii) a detergent composition including at least one calcium salicylate having a TBN in the range from 70 to 245; (iii) 0 to 0.2 mass % of nitrogen, based on the mass of the oil composition, of a dispersant; and (iv) a minor amount of one or more co-additives.Type: GrantFiled: June 5, 2002Date of Patent: September 2, 2003Assignee: Infineum International Ltd.Inventors: Keith Strickland, Laurent Chambard
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Patent number: 6613723Abstract: The present invention provides a process for preparing an overbased barium complex and an overbased barium complex prepared thereby. The process includes the steps of: heating a mixture of barium hydroxide monohydrate and an isomeric mixture of from about C10 to about C15 alcohols in the presence of a solvent, thereby producing a first mixture; contacting the first mixture and an isomeric mixture of from about C8 to about C10 branched carboxylic acids, thereby producing a second mixture which includes unreacted barium hydroxide; and contacting the second mixture and carbon dioxide, thereby producing the overbased barium complex. The overbased barium complex of the present invention is useful in the stabilization of halogen-containing polymers.Type: GrantFiled: December 6, 2001Date of Patent: September 2, 2003Assignee: ExxonMobil Chemical Patents Inc.Inventors: Philippe Buess, Cyriel Eddy Hendrickx, Bernard Francois Leroy
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Publication number: 20030158054Abstract: Powdered overbased amorphous alkaline earth salts are made which consist essentially of isolated solid agglomerated micelles of amorphous alkaline earth metal salts complexed with an amorphous alkaline earth metal carboxylate of a fatty acid. The process for making the powder involves precipitating and isolating the solid particles from liquid overbased alkaline earth metal compositions.Type: ApplicationFiled: March 4, 2003Publication date: August 21, 2003Applicant: OMG Americas, Inc.Inventors: Chester E. Ramey, James E. Reddy
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Publication number: 20030158053Abstract: A lubricating oil composition which comprises a lubricating base oil and a sulfonate, phenate or salicylate of an alkaline earth metal and has a friction coefficient between metals of 0.12 or higher at −20° C. as measured in accordance with a block-on-disk test. The friction coefficient between metals in the use of a metal belt can be kept high within a wide range of temperature from low temperatures to high temperatures. In particular, the lubricating oil exhibits a high performance of &mgr;=0.12 or higher at a low temperature of −20° C. in accordance with a block-on-disk test.Type: ApplicationFiled: October 24, 2002Publication date: August 21, 2003Inventors: Junichi Deshimaru, Yutaka Takakura
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Publication number: 20030158048Abstract: A lubricating composition for internal combustion engines especially useful with fuels having less than 350 ppm sulfur comprises a lubricating oil basestock, a boron containing ashless dispersant, a molybdenum containing friction reducing agent, a metal type detergent and zinc dithiophosphate.Type: ApplicationFiled: January 24, 2003Publication date: August 21, 2003Inventors: Liehpao O. Farng, Andrew Jackson, Willie A. Givens, Douglas E. Deckman, William H. Buck
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Publication number: 20030148899Abstract: 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: ApplicationFiled: March 7, 2003Publication date: August 7, 2003Inventors: Toshiaki Kuribayashi, Nobuchika Kawagoishi, Satoshi Ogano
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Patent number: 6599867Abstract: Overbased detergent additives for lubricating oils comprise an organic substantially aromatic carboxylate, such as an alkylsalicylate, as a surfactant and have a TBN of 200 or greater, an active ingredient content of 70 mass % or greater, a kinematic viscosity at 100° C. of less than 1000 mm2s−1 and a basicity index (BI) of less than 13.Type: GrantFiled: January 31, 2002Date of Patent: July 29, 2003Assignee: Infineum International Ltd.Inventors: Steve Hammond, Mark A. Price, Philip Skinner
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Patent number: 6596673Abstract: The cylinders of a two-stroke cross-head marine diesel engine characterised by a power output of 4,000 kW per cylinder or greater are lubricated by a cylinder lubricant comprising a basestock of lubricating viscosity, on overbased metal detergent and an oil-soluble sulfur-containing compound or phosphorus-containing compound, thereby to raise the onset temperature of scuffing-type mechanical wear of the cylinder walls.Type: GrantFiled: August 25, 2000Date of Patent: July 22, 2003Assignee: Infineum International Ltd.Inventors: Charles H. Bovington, Terence Garner
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Patent number: 6596672Abstract: A low sulfate ash lubricating oil composition comprising an oil of lubricating viscosity, 0.1 to 3.0% of a calcium overbased acidic material, 0.1 to 2.0% of a magnesium overbased acidic material, and at least 0.5% of a combination of an alkylene-coupled hindered phenol antioxidant and an antioxidant other than an alkylene-coupled hindered phenol antioxidant, is particularly useful for lubricating stationary gas engines.Type: GrantFiled: May 28, 2002Date of Patent: July 22, 2003Assignee: The Lubrizol CorporationInventors: Virginia A. Carrick, Ewa A. Bardasz, David E. Ripple
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Publication number: 20030134756Abstract: A low sulfate ash lubricating oil composition comprising an oil of lubricating viscosity, 0.1 to 3.0% of a calcium overbased acidic material, 0.1 to 2.0% of a magnesium overbased acidic material, and at least 0.5% of a combination of an alkylene-coupled hindered phenol antioxidant and an antioxidant other than an alkylene-coupled hindered phenol antioxidant, is particularly useful for lubricating stationary gas engines.Type: ApplicationFiled: May 28, 2002Publication date: July 17, 2003Inventors: Virginia A. Carrick, Ewa A. Bardasz, David E. Ripple
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Publication number: 20030104954Abstract: Liquid overbased calcium/barium/zinc ternary systems are provided for stabilizing halogen-containing polymers. These overbased ternary stabilizer systems are shelf stable liquids and provide polyvinyl chloride compositions with improvements in thermal stability, early color, clarity and plate-out resistance.Type: ApplicationFiled: March 15, 2002Publication date: June 5, 2003Applicant: OMG Americas, Inc.Inventors: James E. Reddy, Jeremy A. Hackett
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Patent number: 6569818Abstract: 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: GrantFiled: May 30, 2001Date of Patent: May 27, 2003Assignee: Chevron Oronite Company, LLCInventors: Morikuni Nakazato, Shigeru Iwamoto, Satoshi Hirano
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Patent number: 6569821Abstract: An overbased metal detergent having friction-modifying properties comprises colloidal inorganic base particles stably dispersed in an oil of lubricating viscosity. The colloidal particles constitute from 15 to 40 mass % of the detergent, and a stabilizing system constitutes from 20 to 45 mass % thereof, the balance being the oil of lubricating viscosity. The stabilizing system is the mixture obtained by combining an oil-soluble detergent component and from 25 to 75 mass % of an aliphatic amide having from 10 to 30 carbon atoms.Type: GrantFiled: January 3, 2000Date of Patent: May 27, 2003Assignee: Infineum USA L.P.Inventors: Tuncel Ibrahim, John A Cleverley, Phillip Skinner, Jane Rachel Galsworthy, Christopher John Adams, Rudi ter Haar
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Patent number: 6559105Abstract: A composition of an antioxidant of the formula where R3 is an alkyl group of 2 to 6 carbon atoms, and a dispersant or a detergent, is a useful additive package for lubricant compositions.Type: GrantFiled: January 16, 2001Date of Patent: May 6, 2003Assignee: The Lubrizol CorporationInventors: William D. Abraham, Paul E. Adams, Gordon D. Lamb, Thomas J. Wolak, Richard A. Denis, Jody A. Kocsis, James P. Roski, Virginia A. Carrick, Susan V. Cowling
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Publication number: 20030069145Abstract: 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: ApplicationFiled: September 9, 2002Publication date: April 10, 2003Inventors: Laurent Chambard, Yolanda Owen
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Publication number: 20030050490Abstract: Shelf stable haze free liquids of overbased alkaline earth metal salts are obtained by reacting metal base with fatty acids in the presence of liquid hydrocarbon and aliphatic alcohols having at least 8 carbon atoms to provide overbased liquids essentially free of a phenol or a phenolic derivative. Stabilizer compositions containing the overbased liquids and mixed metal stabilizers of zinc, cadmium and tin are provided for stabilizing halogen-containing polymers.Type: ApplicationFiled: May 18, 2001Publication date: March 13, 2003Applicant: OMG Americas, Inc.Inventors: James E. Reddy, Chester E. Ramey, Lawrence A. Dominey
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Publication number: 20030004069Abstract: Oil-soluble overbased salicylate-phenate detergent additives comprising a complex in which the basic material of the detergent is stabilized by both salicylate and phenate surfactants. The mass % of the salicylate, as a percentage of the total surfactant mass, is at least 50, preferably greater than 50, provided that, when said mass % is less than 60, the TBN: mass % surfactant ratio of the detergent is 10 or less.Type: ApplicationFiled: January 31, 2002Publication date: January 2, 2003Inventors: Steve Hammond, Mark A. Price, Philip Skinner
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Publication number: 20030004070Abstract: A gas-fuelled engine lubricating oil composition that is substantially free from anti-oxidant additives. The gas-fuelled engine lubricating oil composition exhibits good resistance to oil oxidation and nitration and improved corrosion resistance.Type: ApplicationFiled: June 5, 2002Publication date: January 2, 2003Inventors: Keith Strickland, Laurent Chambard
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Publication number: 20020183212Abstract: Overbased detergent additives for lubricating oils comprise an organic substantially aromatic carboxylate, such as an alkylsalicylate, as a surfactant and have a TBN of 200 or greater, an active ingredient content of 70 mass % or greater, a kinematic viscosity at 100° C. of less than 1000 mm2s−1 and a basicity index (BI) of less than 13.Type: ApplicationFiled: January 31, 2002Publication date: December 5, 2002Inventors: Steve Hammond, Mark A. Price, Philip Skinner
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Publication number: 20020155958Abstract: A lubricating oil composition suitable for a two-stroke cross-head marine diesel engine. The lubricating oil composition comprises a base oil and an oil-soluble overbased metal detergent additive in the form of a complex wherein the basic material of the detergent is stabilized by more than one surfactant.Type: ApplicationFiled: January 23, 2002Publication date: October 24, 2002Inventors: Adrian Dunn, Laurent Chambard, Yolanda Owen
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Publication number: 20020107152Abstract: A low-phosphorus lubricant comprises:Type: ApplicationFiled: December 5, 2001Publication date: August 8, 2002Inventor: Robert Robson
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Publication number: 20020098992Abstract: A lubricating oil composition suitable for a trunk piston marine diesel engine.Type: ApplicationFiled: November 20, 2001Publication date: July 25, 2002Inventors: Adrian Dunn, Laurent Chambard, Terence Garner
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Publication number: 20020098991Abstract: A gas-fuelled engine lubricating oil composition having a TBN in the range of 2 to 20 and comprising:Type: ApplicationFiled: October 4, 2001Publication date: July 25, 2002Inventors: Adrian Dunn, Laurent Chambard, Terence Garner
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Patent number: 6376434Abstract: A lube oil composition which is suitably used for diesel engines which exhaust large amounts of sulfur dioxides (Sox). The composition exhibit excellent corrosion/wear preventive properties against SOx. The lube oil composition of the invention for diesel engines includes a lube oil base having a kinematic viscosity of 8-35 mm2/s at 100° C.; a component (A) which is a compound selected from the group consisting of over based sulfonates of alkaline earth metals, over based phenates of alkaline earth metals, and over based salicylates of alkaline earth metals; and a component (B) which is a bis-type succinic imide compound having an absorption ratio, &agr;/&bgr; (wherein &agr; is the intensity of an absorption peak at 1550±10 cm−1 and &bgr; is the intensity of an absorption peak at 1700±10 cm−1), of absorption peaks in an IR spectrum of not more than 0.005.Type: GrantFiled: October 23, 1997Date of Patent: April 23, 2002Assignee: Idemitsu Kosan Co., Ltd.Inventor: Tadashi Katafuchi
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Patent number: 6348438Abstract: An overbased alkaline earth metal single-aromatic ring hydrocarbyl salicylate-carboxylate is produced by overbasing a mixture of a single-aromatic ring hydrocarbyl salicylate, at least one solvent, a metal hydroxide, and an alkyl polyhydric alcohol alkaline earth metal hydroxide, by contacting that mixture with carbon dioxide under overbasing reaction conditions. The alkyl group of the alkyl polyhydric alcohol has from one to five carbon atoms. The overbased metal single-aromatic ring hydrocarbyl salicylate is treated, before, during, or subsequent to overbasing, with a long-chain carboxylic acid to form a single-aromatic ring hydrocarbyl salicylate-carboxylate.Type: GrantFiled: June 3, 1999Date of Patent: February 19, 2002Assignees: Chevron Oronite S.A., Chevron Oronite Company LLCInventors: Jean-Louis Marie Le Coent, Curt B. Campbell, Thierry Triconnet
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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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Publication number: 20020006878Abstract: A composition of an antioxidant of the formula 1Type: ApplicationFiled: January 16, 2001Publication date: January 17, 2002Applicant: Lubrizol CorporationInventors: William D. Abraham, Paul E. Adams, Gordon D. Lamb, Thomas J. Wolak, Richard A. Denis, Jody A. Kocsis, James P. Roski, Virginia A. Carrick, Susan V. Cowling
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Publication number: 20020002120Abstract: 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: ApplicationFiled: December 22, 2000Publication date: January 3, 2002Inventor: Michael P. Gahagan
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Publication number: 20010053750Abstract: The lubricating oil of the present invention exhibits an excellent effect of agglomerating solid impurity particles it contains to a sufficiently large size as to be captured and removed by an oil filter.Type: ApplicationFiled: July 9, 1999Publication date: December 20, 2001Inventors: SATOHI OGANO, NOBUCHIKA KAWAGOISHI, MAKOTO YONEDA, TOSHIAKI KURIBAYASHI