Patents Represented by Attorney, Agent or Law Firm Michael F. Esposito
  • Patent number: 6881780
    Abstract: A polyacrylate ester, and more particularly a polymethacrylate ester based dispersant-viscosity improver for lubricating oil compositions. Specifically, the dispersant viscosity improvers of this invention are nitrogen-containing copolymers comprising units derived from (A) from about 5% to about 75% by weight of alkyl acrylate ester monomers containing from 2 to 11 carbon atoms in the alkyl group; (B) from about 25% to about 95% by weight of alkyl acrylate ester monomers containing from 12 to about 24 carbon atoms in the alkyl group; and (C) From about 0.1% to about 20% by weight of at least one nitrogen containing monomer selected from the group consisting of vinyl substituted nitrogen heterocyclic monomers, N,N-dialkylaminoalkyl acrylate monomers, N,N-dialkylaminoalkyl acrylamide monomers and tertiary-alkyl acrylamides, provided that the total equals 100%. Processes for preparing the compositions, additive concentrates and lubricating oil compositions are described.
    Type: Grant
    Filed: August 7, 2001
    Date of Patent: April 19, 2005
    Assignee: The Lubrizol Corporation
    Inventors: Charles P. Bryant, Bryan A. Grisso, Robert Cantiani
  • Patent number: 6827749
    Abstract: An aqueous hydrocarbon fuel is produced by a batch or continuous process. The process employs a reactant emulsion as a starting component with a hydrocarbon fuel, emulsifier and water. The resulting aqueous hydrocarbon fuel emulsion has improved stability.
    Type: Grant
    Filed: October 15, 2001
    Date of Patent: December 7, 2004
    Assignee: The Lubrizol Corporation
    Inventors: David L. Westfall, John J. Mullay, Stephen P. Rowan
  • Patent number: 6823822
    Abstract: This invention relates to a process for reducing engine wear in the operation of an internal combustion engine, comprising: (A) recirculating at least part of the exhaust gas from the engine to the intake air supply of the engine; and (B) operating the engine using a water-blended fuel composition made by combining: (i) a normally liquid hydrocarbon fuel; (ii) water; and (iii) at least one surfactant.
    Type: Grant
    Filed: January 9, 2004
    Date of Patent: November 30, 2004
    Assignee: The Lubrizol Corporation
    Inventors: David A. Duncan, Deborah A. Langer, Mayur P. Shah, Frank V. Zalar
  • Patent number: 6818601
    Abstract: A composition of matter suitable for use as a dispersant-viscosity improver for lubricating oil compositions comprises the reaction product of reactants comprising (a) hydrocarbon polymer grafted with an &agr;,&bgr;-ethylenically unsaturated carboxylic acid or functional derivative thereof; and (b) an amine selected from the group consisting of (b-1) a product made by contacting at least one hydroxy-containing material with at least one amine having at least one N—H group, and (b-2) an acylated derivative of (b-1) containing at least one condensable N—H group.
    Type: Grant
    Filed: June 22, 2000
    Date of Patent: November 16, 2004
    Assignee: The Lubrizol Corporation
    Inventor: Richard M. Lange
  • Patent number: 6800154
    Abstract: An emulsion comprising:(A) a discontinuous phase; (B) a continuous organic phase; and (C) an emulsifying amount of at least one nitrogen and transition metal containing composition derived from hydrocarbon substituted polycarboxylic acids or functional equivalent thereof, selected from the group consisting of (C-1) amide and imide derivatives of transition metal salts, (C-2) transition metal complexes of non-acidic acylated nitrogen compounds, and (C-3) a mixture of acylated nitrogen compounds and transition metal salts. In one particular embodiment, the invention relates to explosive emulsions wherein (A) is a discontinuous oxidizer phase comprising at least one oxygen-supplying component and (B) is a continuous organic phase which comprises at least one carbonaceous fuel. In another embodiment, the discontinuous phase (A) is a discontinuous aqueous phase.
    Type: Grant
    Filed: January 23, 2002
    Date of Patent: October 5, 2004
    Assignee: The Lubrizol Corporation
    Inventors: Jeffrey M. Carey, Jill M. Marlow
  • Patent number: 6794428
    Abstract: A coupler is described for use in carbon black filled rubber compositions. The coupler includes an amine group and a thiol group or a polysulfidic linkage. The coupler improves the interaction of the carbon black with the rubber as measured by a decrease in the tan delta at 60° C. while substantially maintaining the tan delta at 0° C.
    Type: Grant
    Filed: October 29, 2002
    Date of Patent: September 21, 2004
    Assignee: The Lubrizol Corporation
    Inventors: James D. Burrington, Benny R. Richardson, Joseph W. Pialet, Ann E. Wykoff, Roger L. Sowerby, Kenneth W. Lee, Ralph E. Kornbrekke, Ghebrehiwet N. Ghebremeskel, Kirk E. Davis
  • Patent number: 6793695
    Abstract: A fuel composition exhibiting improved anti-static properties, comprises a liquid fuel which contains less than 500 parts per million by weight sulfur; 0.001 to 1 ppm of a hydrecarbyl monoamine or hydrocarbyl-substituted poly(alkylenieamine); and 10 to 500 ppm of at least one fatty acid containing 8 to 24 carbon atoms, or an ester thereof.
    Type: Grant
    Filed: August 28, 2002
    Date of Patent: September 21, 2004
    Assignee: The Lubrizol Corporation
    Inventors: Mark F. Wilkes, David A. Duncan, Shaun P. Carney
  • Patent number: 6787663
    Abstract: 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: Grant
    Filed: October 30, 2002
    Date of Patent: September 7, 2004
    Assignee: The Lubrizol Corporation
    Inventors: Paul E. Adams, Thomas J. Wolak
  • Patent number: 6780209
    Abstract: The disclosed invention relates to a composition comprising a partially dehydrated product made by: (I) reacting (A) a hydrocarbyl substituted succinic acid or anhydride with (B) a polyol, a polyamine, a hydroxyamine, or a mixture of two or more thereof, to form a first intermediate product comprising: an ester, partial ester or mixture thereof when (B) is a polyol; an amide, imide, salt, amide/salt, partial amide or mixture of two or more thereof when (B) is a polyamine; or an ester, partial ester, amide, partial amide, amide/salt, imide, ester/salt, salt or a mixture of two or more thereof when (B) is a hydroxyamine, a mixture of a polyol and a polyamine, a mixture of a polyol and a hydroxyamine, a mixture of a polyamine and a hydroxyamine, or a mixture of a polyol, a polyamine and a hydroxyamine; the hydrocarbyl substituent of said acid or anhydride having an average of about 8 to about 200 carbon atoms; and (II) heating said first intermediate product at an effective temperature to form a second interme
    Type: Grant
    Filed: January 24, 2000
    Date of Patent: August 24, 2004
    Assignee: The Lubrizol Corporation
    Inventors: Brian B. Filippini, Richard M. Lange, Bryan A. Grisso, Bryn Hird
  • Patent number: 6777378
    Abstract: This invention relates to a lubricating oil composition, comprising: (A) a base oil; (B) a molybdenum and sulfur containing composition derived from a basic nitrogen containing compound, a molybdenum compound and carbon disulfide; (C) a boron-containing compound; and (D) optionally a phosphorus containing compound, provided the phosphorus content of the lubricating oil composition does not exceed about 0.10% by weight.
    Type: Grant
    Filed: February 15, 2002
    Date of Patent: August 17, 2004
    Assignee: The Lubrizol Corporation
    Inventors: William D. Abraham, Jack C. Kelley, Jonathan S. Vilardo
  • Patent number: 6770605
    Abstract: A composition suitable for reducing sludge and degradation of elastomer seals in engines comprises an oil of lubrication viscosity and a minor amount of a sludge preventing/seal protecting nitrogen containing dispersant, which is a reaction product of a hydrocarbyl-substituted succinic acylating agent having a limited amount of low molecular weight substituent; and a polyamine or condensed polyamine containing less than 20 mole percent of polyamine components of 6 or fewer nitrogen atoms.
    Type: Grant
    Filed: September 11, 2000
    Date of Patent: August 3, 2004
    Assignee: The Lubrizol Corporation
    Inventors: Carl F. Stachew, Gordon D. Lamb, William D. Abraham, Mary Galic Raguz
  • Patent number: 6764982
    Abstract: 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: Grant
    Filed: January 31, 2002
    Date of Patent: July 20, 2004
    Assignee: The Lubrizol Corporation
    Inventors: Ewa A. Bardasz, Virginia A. Carrick, William D. Abraham, Gordon D. Lamb
  • Patent number: 6759375
    Abstract: A sump-lubricated internal combustion engine equipped with exhaust gas recycle, lubricated with (a) an oil of lubricating viscosity, (b) 0.05 to 1 percent by weight of an amide of an aliphatic carboxylic acid, and (c) at least one additional dispersant, detergent, or anti-wear agent, exhibits reduced temperature of the lubricant in the sump.
    Type: Grant
    Filed: May 23, 2002
    Date of Patent: July 6, 2004
    Assignee: The Lubrizol Corporation
    Inventors: Thomas T. Curtis, Ewa A. Bardasz, Daniel H. Heath, Peter B. Thomson
  • Patent number: 6748905
    Abstract: This invention relates to a process for reducing engine wear in the operation of an internal combustion engine, comprising: (A) recirculating at least part of the exhaust gas from the engine to the intake air supply of the engine; and (B) operating the engine using a water-blended fuel composition made by combining: (i) a normally liquid hydrocarbon fuel; (ii) water; and (iii) at least one surfactant.
    Type: Grant
    Filed: March 4, 2002
    Date of Patent: June 15, 2004
    Assignee: The Lubrizol Corporation
    Inventors: David A. Duncan, Deborah A. Langer, Mayur P. Shah, Frank V. Zalar
  • Patent number: 6730640
    Abstract: Continuously variable transmissions are lubricated by supplying to the transmission a composition of an oil of lubricating viscosity and an oil-soluble zinc salt containing at least one hydrocarbyl group of at least 4 carbon atoms. The amount of the zinc salt is sufficient to provide an increased steel-on-steel dynamic coefficient of friction for the composition, being at least 0.125. The composition is substantially free from thiophosphate salts and exhibits a copper corrosion rating of 1B or better (ASTM-130).
    Type: Grant
    Filed: June 10, 2002
    Date of Patent: May 4, 2004
    Assignee: The Lubrizol Corporation
    Inventors: Roger L. Sowerby, Craig D. Tipton, James L. Sumiejski
  • Patent number: 6725653
    Abstract: This invention relates to a process for reducing the level of pollutants in the exhaust of a diesel engine, comprising: operating said diesel engine using as the fuel a water-diesel fuel emulsion; and contacting the exhaust gas from said diesel engine with an after-treatment such as a filter.
    Type: Grant
    Filed: June 6, 2003
    Date of Patent: April 27, 2004
    Assignee: The Lubrizol Corporation
    Inventors: Kevin F. Brown, Ted N. Tadrous, Deborah A. Langer, David A. Duncan
  • Patent number: 6727357
    Abstract: Compositions comprising alkoxylated lipophilic polyol compounds, e.g., ehtoxylated, esterified methyl glucosides, are disclosed wherein at least 5% of the polyol derivatives have about three moles of the lipophilic substituent per mole of polyol. Quite advantageously, the disclosed polyol derivatives can be dissolved into aqueous solutions to provide liquid thickeners suitable for thickening surfactant-containing compositions, e.g., shampoos, at cold processing temperatures.
    Type: Grant
    Filed: March 18, 2003
    Date of Patent: April 27, 2004
    Assignee: The Lubrizol Corporation
    Inventors: Stuart Barry Polovsky, Carmella A. Barbeito, Wing Kin Li, Edward F. Diantonio, Russell Lowell Kreeger
  • Patent number: 6727208
    Abstract: 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: Grant
    Filed: May 23, 2002
    Date of Patent: April 27, 2004
    Assignee: The Lubrizol Corporation
    Inventor: Melody A. Wilk
  • Patent number: 6706672
    Abstract: 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: Grant
    Filed: March 6, 2002
    Date of Patent: March 16, 2004
    Assignee: The Lubrizol Corporation
    Inventor: Jack C. Kelley
  • Patent number: 6677284
    Abstract: A problem with refrigeration systems using ammonia as the refrigerant and hydrocarbon lubricants is that the seals/gaskets of the systems have a tendency to harden and shrink. This can cause leakage of the refrigerant and eventually require disassembly of the equipment and replacement of the seals. The addition of a small amount polyether having an aromatic fragment of 6-18 carbon atoms or an aliphatic fragment of 10-22 carbon atoms can soften the seals and partially re-swell the seals solving the leakage problem and avoiding expensive maintenance costs. Alternatively a polyether of 1,2-butylene oxide which is more oil soluble than most other polyethers with a smaller Z group e.g. derived from alkanols of 1 to 9 carbon would be effective at reducing hardening and shrinkage.
    Type: Grant
    Filed: August 29, 2002
    Date of Patent: January 13, 2004
    Assignee: The Lubrizol Corporation
    Inventors: Thomas Rajewski, John C. Tolfa, Hsinheng Li