The -oh Group Is In Salt Form Patents (Class 508/586)
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Patent number: 6764982Abstract: This invention relates to a lubricating oil composition, comprising: (A) a base oil; and a phosphorus-containing compound represented by the formulae wherein in Formulae (B-I) and (B-II), R1, R2 and R3 are independently hydrogen or hydrocarbyl groups, and a, b and c are independently zero or 1; the lubricating oil composition being characterized by a sulfur content of about 0.01 to about 0.25% by weight.Type: GrantFiled: January 31, 2002Date of Patent: July 20, 2004Assignee: The Lubrizol CorporationInventors: Ewa A. Bardasz, Virginia A. Carrick, William D. Abraham, Gordon D. Lamb
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Publication number: 20040102335Abstract: Lubricating oils containing an additive formulation including at least one sulphonate, saligenin and salixarate detergent provide improved wear performance and decreased sulphur and phosphorus emissions.Type: ApplicationFiled: November 25, 2002Publication date: May 27, 2004Applicant: The Lubrizol CorporationInventors: Virginia A. Carrick, William D. Abraham, Gordon D. Lamb, R. Ian Wilby, James P. Roski
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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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Patent number: 6720293Abstract: A low viscosity lubricating oil composition having a CCS viscosity less than 3500 mPa.s at −25° C. and having no more than 0.16 mass % of phosphorus which comprises a dispersant, and a detergent of calcium or magnesium or both; and optionally a zinc dihydrocarbyldithiophosphate, a viscosity modifier, a pour point depressant and an antioxidant. The oil satisfies the Cummins M11 cross-head wear engine test specification in a low phosphorus and low viscosity formulation.Type: GrantFiled: September 24, 2001Date of Patent: April 13, 2004Assignee: Infineum International Ltd.Inventors: Charles H. Bovington, Christopher J. Locke, Terence Kelly
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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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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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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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Patent number: 6610637Abstract: A lubricant containing (a) a synthetic base oil composition having an overall kinematic viscosity of at least about 4.8×10−6m2/s (4.8 cSt) at 100° C. and a viscosity index of at least about 110; (b) a dispersant-viscosity modifier; and (c) a sulfur-free functionalized hydrocarbyl-substituted phenol detergent provides improved valve train wear, with longer drain intervals, to heavy duty diesel engines.Type: GrantFiled: October 16, 2001Date of Patent: August 26, 2003Assignee: The Lubrizol CorporationInventors: Thomas T. Curtis, Gordon D. Lamb, William D. Abraham
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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: 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: 20030144157Abstract: An oil composition for heat treatment of a gear which comprises mineral oil having a kinematic viscosity of 5 to 40 mm2/second at 100° C. as a base oil and, based on a total amount of the composition, 0.01 to 5% by weight of (a) a phosphoric acid ester compound and, where necessary, 0.5 to 10% by weight of (b) one compound selected from alkenylsuccinimide compounds, alkylsuccinimide compounds and addition products of boron with alkenylsuccinimide compounds or alkylsuccinimide compounds and 0.5 to 10% by weight of (c) at least one compound selected from salicylates, phenates and sulfonates of alkaline earth metals.Type: ApplicationFiled: February 14, 2003Publication date: July 31, 2003Applicant: Idemitsu Kosan Co., Ltd.Inventor: Eiichi Nakamura
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Patent number: 6586374Abstract: A synthetic lubricant for gasoline and diesel engines having a viscosity ranging between about 14.5 and 16.5 cs at 100° C., the lubricant containing from about 55 to about 75 volume percent polyalphaolefin having a viscosity of about 6 to 8 cs at 100° C., an ethylene-propylene copolymer, an ester or diester, a packaged additive, a total base number enhancer and a minor effective amount of an antifoamant. A method of use is also provided whereby the subject lubricant is recirculated through an operating engine while periodically monitoring the total base number and adjusting the total base number to a level of about 12.0 by the addition of a total base number enhancer such as calcium phenate.Type: GrantFiled: July 18, 2002Date of Patent: July 1, 2003Assignee: Primrose Oil CompanyInventor: Edward Alan Paul
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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: 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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Publication number: 20030096714Abstract: An oil composition for heat treatment of a gear which comprises mineral oil having a kinematic viscosity of 5 to 40 mm2/second at 100° C. as a base oil and, based on a total amount of the composition, 0.01 to 5% by weight of (a) a phosphoric acid ester compound and, where necessary, 0.5 to 10% by weight of (b) one compound selected from alkenylsuccinimide compounds, alkylsuccinimide compounds and addition products of boron with alkenylsuccinimide compounds or alkylsuccinimide compounds and 0.5 to 10% by weight of (c) at least one compound selected from salicylates, phenates and sulfonates of alkaline earth metals.Type: ApplicationFiled: October 23, 2001Publication date: May 22, 2003Applicant: Idemitsu Kosan Co., Ltd.Inventor: Eiichi Nakamura
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Publication number: 20030096716Abstract: The use, in a minor amount, of a detergent composition comprising one or more metal detergents which comprises metal salts of organic acids, wherein the detergent composition comprises more than 50 mole %, based on the moles of the metal salts of organic acids in the detergent composition, of:Type: ApplicationFiled: May 9, 2002Publication date: May 22, 2003Inventors: Christopher J. Locke, Mark G. Stevens, Peter Wrench, Stephen Arrowsmith, Rebecca C. Castle, Jane R. Galsworthy
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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: 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: 20020151445Abstract: A lubricant containing (a) a synthetic base oil composition having an overall kinematic viscosity of at least about 4.8×10−6 m2/s (4.8 cSt) at 100° C. and a viscosity index of at least about 110; (b) a dispersant-viscosity modifier; and (c) a sulfur-free functionalized hydrocarbyl-substituted phenol detergent provides improved valve train wear, with longer drain intervals, to heavy duty diesel engines.Type: ApplicationFiled: October 16, 2001Publication date: October 17, 2002Applicant: The Lubrizol CorporationInventors: Thomas T. Curtis, Gordon D. Lamb, William D. Abraham
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Publication number: 20020151441Abstract: Automatic transmission fluids are described which contain at least 0.2 wt % of a metal-containing detergent, a dispersant, and a mixture of friction modifiers. The transmission fluids according to the present invention exhibit excellent initial anti shudder properties, excellent anti-shudder durability, and excellent friction durability.Type: ApplicationFiled: February 14, 2001Publication date: October 17, 2002Inventors: Sanjay Srinivasan, Ramnath N. Iyer, Nubar Ozbalik
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Patent number: 6455477Abstract: There is disclosed a low smoke two cycle oil comprising a solvent and 5-20% by weight polyisobutylene which has a KV of at least 6.5 mm2/s at 100° C. and a JASO M342 Smoke Index of at least 85.Type: GrantFiled: December 11, 2000Date of Patent: September 24, 2002Assignee: Infineum International Ltd.Inventor: George C. L'Heureux
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Patent number: 6423670Abstract: 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: GrantFiled: March 14, 2001Date of Patent: July 23, 2002Assignee: Infineum International Ltd.Inventors: Christopher J. Locke, Isabel P. MacDonald
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Publication number: 20020058593Abstract: A low viscosity lubricating oil composition having a CCS viscosity less than 3500 mPa.s at −25° C. and having no more than 0.16 mass % of phosphorus which comprises a dispersant, and a detergent of calcium or magnesium or both; and optionally a zinc dihydrocarbyldithiophosphate, a viscosity modifier, a pour point depressant and an antioxidant. The oil satisfies the Cummins M11 cross-head wear engine test specification in a low phosphorus and low viscosity formulation.Type: ApplicationFiled: September 24, 2001Publication date: May 16, 2002Inventors: Charles H. Bovington, Christopher J. Locke, Terence Kelly
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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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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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Patent number: 6331510Abstract: A lubricant containing (a) a synthetic base oil composition having an overall kinematic viscosity of at least about 4.8×10−6 m2/s (4.8 cSt) at 100° C. and a viscosity index of at least about 110; (b) a dispersant-viscosity modifier; and (c) a sulfur-free functionalized hydrocarbyl-substituted phenol detergent provides improved valve train wear, with longer drain intervals, to heavy duty diesel engines.Type: GrantFiled: February 13, 2001Date of Patent: December 18, 2001Assignee: The Lubrizol CorporationInventors: Thomas T. Curtis, Gordon D. Lamb, William D. Abraham
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Patent number: 6310009Abstract: A saligenin derivative such as the magnesium salt represented by the formula is useful as an additive for a lubricating composition. Preferably X is —CHO or —CH2OH, and Y is —CH2— or —CH2OCH2—. R1 is a hydrocarbyl group containing 1 to 60 carbon atoms and m is 0 to 10. At least one aromatic ring should contain an R1 substituent and the total number of carbon atoms in all R1 groups should be at least 7.Type: GrantFiled: January 16, 2001Date of Patent: October 30, 2001Assignee: The Lubrizol CorporationInventors: Jody A. Kocsis, James P. Roski, Virginia A. Carrick, Richard A. Denis, Thomas J. Wolak, Gordon D. Lamb, Paul E. Adams, William D. Abraham, Susan V Cowling
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Patent number: 6306801Abstract: A lubricating oil composition having an excellent sludge formation inhibiting effect and being suitable for use as an engine oil is provided. The lubricating oil composition includes: a lubricating base oil, (A) 0.5 to 20% by mass of acylated bissuccinimide, (B) 0.05 to 0.3% by mass of zinc dithiophosphate in terms of the phosphorus content, and (C) 0.5 to 4.0% by mass of metallic detergent in terms of the sulfated ash content, based on the total mass of the composition.Type: GrantFiled: October 21, 1999Date of Patent: October 23, 2001Assignee: Nippon Mitsubishi Oil CorporationInventors: Kazuhiro Yagishita, Yoko Matsuyama, Osamu Kurosawa
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Patent number: 6277794Abstract: A marine diesel engine lubricant composition having a TBN of at least 10 and preferably a VI of at least 90, comprises a major amount of oil of lubricating viscosity, and admixed therewith, minor amounts of an ashless antiwear additive and a metal detergent in the form of (i) an overbased metal detergent having a TBN at least 300, preferably at least 330, more preferably at least 400, and comprising a surfactant system derived from at least two surfactants, and/or (ii) a metal detergent other than (i); provided that, if detergent (ii) is present, the composition does not contain a minor amount of an extreme pressure additive, being up to 5.0 mass % based on the total mass of the composition.Type: GrantFiled: December 28, 1998Date of Patent: August 21, 2001Assignee: Infineum USA L.P.Inventor: Adrian Dunn
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Patent number: 6268320Abstract: This invention relates to a composition comprising at least one sulphur-containing calixarene represented by formula (I) or a metal salt of said calixarene, wherein in formula (I): Y is a divalent bridging group, at least one of said bridging groups being a sulphur atom; R3 is hydrogen, a hydrocarbyl or a hetero-substituted hydrocarbyl group; either R1 is hydroxyl and R2 and R4 are independently either hydrogen, hydrocarbyl or hetero-substituted hydrocarbyl, or R2 and R4 are hydroxyl and R1 is either hydrogen, hydrocarbyl or hetero-substituted hydrocarbyl; and n is a number having a value of at least 4. In one embodiment, the foregoing salt is an overbased salt. The invention also relates to additive compositions and finished lubricating oil compositions containing the foregoing overbased salt. The invention also relates to a process for making the foregoing overbased salt.Type: GrantFiled: May 5, 1999Date of Patent: July 31, 2001Assignee: Lubrizol Adibis Holdings (UK) LimitedInventor: John Crawford
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Patent number: 6262001Abstract: An unsulfurized, alkali metal-free, detergent-dispersant composition having from 40% to 60% alkylphenol, from 10% to 40% alkaline earth alkylphenate, and from 20% to 40% alkaline earth single aromatic-ring alkylsalicylate. This composition may have an alkaline earth double aromatic-ring alkylsalicylate as long as the mole ratio of single-ring alkylsalicylate to double aromatic-ring alkylsalicylate is at least 8:1. This composition may be produced by the three-step process involving neutralization of alkylphenols, carboxylation of the resulting alkylphenate, and filtration of the product of the carboxylation step.Type: GrantFiled: October 26, 2000Date of Patent: July 17, 2001Assignee: Chevron Chemical Company LLCInventors: Jean-Louis Marie Le Coent, Jacques Cazin, Pierre Tequi
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Publication number: 20010003734Abstract: A marine diesel engine lubricant composition having a TBN of at least 10 and preferably a VI of at least 90, comprises a major amount of oil of lubricating viscosity, and admixed therewith, minor amounts of an ashless antiwear additive and a metal detergent in the form ofType: ApplicationFiled: December 15, 2000Publication date: June 14, 2001Applicant: Infineum USA L.P.Inventor: Adrian Dunn
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Patent number: 6235688Abstract: Non-thixotropic, sodium-free lubricant additive having from 10% to 50% of a liquid organic diluent and from 30% to 90% of a substituted hydrocarbaryl metal salt. At least 30 mole percent of the metal in the metal salt is lithium, and the salt is essentially free of sodium. The BN of the non-thixotropic lubricant additive attributable to the lithium is less than 150. This additive is useful for decreasing black sludge deposits and piston deposits.Type: GrantFiled: September 24, 1997Date of Patent: May 22, 2001Assignee: Chevron Chemical Company LLCInventors: Vernon R. Small, Jean-Louis Le Coent, Gerrit J. Polhaar, Ita Suharti Suwandi, William Woodford Willis, Jr.
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Patent number: 6232277Abstract: There are disclosed fuel compositions containing an additive formed by admixture of (i) at least one ethylene polymer, (ii) the product of the condensation reaction between an aldehyde or ketone or reactive equivalent thereof and at least one compound comprising one or more aromatic moieties having at least one substituent of the formula XR1 and one further substituent R2 wherein X is oxygen of sulfur, R1 is hydrogen or a moiety bearing at least one hydrocarbyl group and R2 represents a hydrocarbyl group and (iii) at least one oil soluble polar nitrogen compound different from the condensation product and having one or more substituents of the formula NR13 where R13 represents a hydrocarbyl group containing 8 to 40 carbon atoms.Type: GrantFiled: May 21, 1999Date of Patent: May 15, 2001Assignee: Exxon Chemical Patents IncInventors: Christophe Ledeore, Graham Jackson, Robert Dryden Tack, Iain More
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Patent number: 6191081Abstract: A long life lubricating oil as evidenced by a reduction in viscosity increase, oxidation and nitration, comprises a major amount of a base oil of lubricating viscosity and a minor amount of a mixture of high TBN, medium TBN and low/neutral TBN detergents wherein metal salicylate detergent is at least one of the medium or low/neutral TBN detergents.Type: GrantFiled: December 15, 1999Date of Patent: February 20, 2001Assignee: ExxonMobil Research and Engineering CompanyInventors: Stanley James Cartwright, James Walter Finch
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Patent number: 6159912Abstract: A low overbased alkyl phenyl sulfonate prepared by the neutralization of sulfonic acid with a sulfurized high TBN calcium alkylphenate in the absence of chloride and in the absence of additional carboxylic acid.Type: GrantFiled: November 5, 1998Date of Patent: December 12, 2000Assignee: Chevron Chemical Company LLCInventor: John McDonald
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Patent number: 6159911Abstract: Disclosed is a diesel engine oil composition containing a lube oil base and one or more metallic detergent-dispersants selected from among a perbasic alkaline earth metal sulfonate, phenolate, and salicylate. The total phosphorus content of the composition is suppressed to 100 ppm by weight or less, to thereby provide diesel engine oil compositions having excellent oxidation stability and wear resistance.Type: GrantFiled: April 15, 1998Date of Patent: December 12, 2000Assignee: Idemitsu Kosan Co., Ltd.Inventor: Tadashi Katafuchi
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Patent number: 6140280Abstract: Disclosed are novel succinimide compounds effective in diesel engine lubricating oil for protecting engine parts from being corroded or worn by SOx. An acid compound of formula (I) or (II) is reacted with a polyamine to produce the succinimide compounds, which give an absorption peak (.alpha.-peak) at 1640.+-.cm.sup.-1 and an absorption peak (.beta.-peak) at 1700.+-.10 cm.sup.-1 in the IR spectral pattern with the ratio, .alpha.-peak intensity/.beta.-peak intensity, of being 0.12 or more.[1] ##STR1## R is an alkenyl or alkyl group derived from a C2 to C15 olefinic polymer and having a number-average molecular weight of from 200 to 4000. The succinimide compound is added to base oil along with a metallic detergent-dispersant additives selected from over-based sulfonates, phenates and salicylates of alkaline earth metals to give a lubricating oil composition for diesel engines.Type: GrantFiled: October 8, 1997Date of Patent: October 31, 2000Assignee: Idemitsu Kosan Co., Ltd.Inventors: Takeshige Nakano, Tadashi Katafuchi
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Patent number: 6107259Abstract: An engine oil contains a lubricating oil and an overbased calcium sulfonate having a dispersion of calcite-core micelles, which engine oil has commercial haze free properties, namely a Hazitron test value of less than about 30 and more particularly less than about 15 to 10, and commercial anti-wear properties, namely exhibiting a 4-Ball wear test scar diameter of less than 0.4 mm. The detergent has a TBN of from 100 to 400 and yet a viscosity of no more than 100,000 cps at 25.degree. C. and usually 20,000 to 30,000 cps at 25.degree. C. The overbased calcium sulfonate detergent provides a stable dispersion of calcite-core sulfonate micelles in the oil. The calcite overbased sulfonate is substantially free of amorphous, vaterite and aragonite forms of the calcium carbonate. The method of producing the improved calcite-core dispersion overbased calcium sulfonate provides for reacting an overbased amorphous calcium sulfonate having a TBN of about 400 or more with a C.sub.1 to C.sub.Type: GrantFiled: July 15, 1998Date of Patent: August 22, 2000Assignee: Witco CorporationInventors: Ronald J. Muir, Theo I. Eliades, Ken Niece, Wayne A. Mackwood
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Patent number: 6103672Abstract: An improved polybutene-free lubricant composition for marine diesel engines, comprising a major amount of oil of lubricating viscosity and, provided by admixing therewith, minor amounts of a) at least one of a borated dispersant or oil-soluble or oil-dispersible boron compound; and b) one or more overbased metal compounds the or each compound having a TBN of at least 300, with the proviso that if an overbased metal salicylate is present then the TBN of said salicylate is at least 200; wherein the TBN of the composition is at least 10 and the viscosity index of the composition is at least 90.Type: GrantFiled: May 1, 1998Date of Patent: August 15, 2000Assignee: Exxon Chemical Patents, Inc.Inventors: Adrian Dunn, Alain Louis Pierre Lenack, Philip Skinner
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Patent number: 6008166Abstract: A detergent concentrate composition suitable for incorporation into a finished lubricating oil comprises:(A) an additive concentrate comprising:(a) a lubricating oil, and(b) a lubricating oil soluble sulphurised or non-sulphurised alkaline earth metal hydrocarbyl phenate modified by reaction to incorporate from greater than 2 to less than 40% by weight based on the weight of the concentrate (A) of either (i) at least one carboxylic acid having the formula: ##STR1## wherein R is a C.sub.10 to C.sub.24 alkyl or alkenyl group and R.sup.1 is either hydrogen, a C.sub.1 to C.sub.4 alkyl group or a --CH.sub.2 -COOH group, or an anhydride or ester thereof, or (ii) a di- or polycarboxylic acid containing from 36 to 100 carbon atoms or an anhydride or ester thereof, the concentrate having a BN greater than 300 and a viscosity at 100.degree. C.Type: GrantFiled: August 1, 1997Date of Patent: December 28, 1999Assignee: Lubrizol Adibis Holdings LimitedInventors: Stephen James Cook, Sean Patrick O'Connor, John Crawford
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Patent number: 5942476Abstract: A low-viscosity overbased hydrocarbyl phenate-carboxylate is produced by contacting a mixture of a hydrocarbyl phenate, at least one solvent, metal hydroxide, aqueous metal chloride, and an alkyl polyhydric alcohol containing from one to five carbon atoms with carbon dioxide under overbasing reaction conditions. The hydrocarbyl phenate is treated with a long-chain carboxylic acid, anhydride or salt thereof to form the hydrocarbyl phenate-carboxylate before, during, or subsequent to overbasing. The hydrocarbyl phenate can be sulfurized or unsulfurized.Type: GrantFiled: June 3, 1998Date of Patent: August 24, 1999Assignee: Chevron Chemical CompanyInventor: Curt B. Campbell
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Patent number: 5792731Abstract: A lubricant composition for continuous variable transmissions which comprises a base oil and auxiliaries incorporated therein which are a sulfur-based extreme pressure additive (A), a phosphorus-based extreme pressure additive (B), and an alkaline earth metal-based detergent (C) It is superior in wear resistance and extreme pressure properties and keeps the coefficient of friction high for a long period of time, so that it is capable of transmitting a large capacity of torque when it is applied to an continuous variable transmission. It is particularly suitable for a transmission of metal belt type.Type: GrantFiled: June 5, 1997Date of Patent: August 11, 1998Assignee: Idemitsu Kosan Co., Ltd.Inventors: Toshihiko Ichihashi, Hideo Igarashi, Noboru Sonoda
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Patent number: 5719107Abstract: Thus, the instant invention is directed toward an oil for diesel engines comprising an admixture of (A) a major amount of an oil of lubricating viscosity, (B) at least 4 mass % dispersant, (C) at least 0.3 mass % of a metal phenate, (D) less than 0.1 mass % friction modifier, (E) less than 0.3 mass % of sulfurized phenols and, (F) less than 0.12 mass % neutral calcium sulfonate.Type: GrantFiled: August 9, 1996Date of Patent: February 17, 1998Assignee: Exxon Chemical Patents IncInventors: Edward Francis Outten, Andrew James Dalziel Ritchie
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Patent number: 5674821Abstract: A detergent concentrate composition suitable for incorporation into a finished lubricating oil comprises:(A) an additive concentrate comprising:(a) a lubricating oil, and(b) a lubricating oil soluble sulphurized or non-sulphurized alkaline earth metal hydrocarbyl phenate modified by reaction to incorporate from greater than 2 to less than 40% by weight based on the weight of the concentrate (A) of either (i) at least one carboxylic acid having the formula: ##STR1## wherein R is a C.sub.10 to C.sub.24 alkyl or alkenyl group and R.sup.1 is either hydrogen, a C.sub.1 to C.sub.4 alkyl group or a --CH.sub.2 --COOH group, or an anhydride or ester thereof, or (ii) a di- or polycarboxylic acid containing from 36 to 100 carbon atoms or an anhydride or ester thereof, the concentrate having a BN greater than 300 and a viscosity at 100.degree. C.Type: GrantFiled: January 11, 1995Date of Patent: October 7, 1997Assignee: BP Chemicals (Additives) LimitedInventors: Stephen James Cook, Sean Patrick O'Connor, John Crawford
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Patent number: 5607906Abstract: A grease composition for constant velocity joints which consists essentially of: (a) a base oil; (b) an urea thickener; (c) molybdenum disulfide; and (d) a metal salt or an overbasic metal salt selected from the group consisting of metal salts or overbasic metal salts of oxidized waxes, petroleum sulfonates, alkyl aryl sulfonates, salicylate, and phenates. In addition to (a) to (d), it may further contain, (e) an extreme pressure agent selected from the group consisting of a metal-free sulfur-phosphorus extreme pressure agent and molybdenum dithiophosphate, or (f) molybdenum dithiocarbamate. The grease composition exhibits excellent wear-resistance and pitting-inhibitory effect.Type: GrantFiled: April 22, 1996Date of Patent: March 4, 1997Assignee: Kyodo Yushi Co., Ltd.Inventors: Takashi Okaniwa, Hisayuki Osawa