Patents by Inventor Stephen A. DiBiase

Stephen A. DiBiase has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5141658
    Abstract: This invention is directed to novel compositions comprising (A) certain sulfur compounds, and (B) at least one carboxylic detergent composition. The compositions of the invention are useful as additives in lubricants and functional fluids, fuels and aqueous systems. Lubricating, fuel and functional fluid compositions containing the derivatives of the invention exhibit improved antioxidant, anti-wear, thermal stability and/or extreme-pressure properties.The compositions of the invention comprise the combination of(A) at least one sulfur compound characterized by the structural formula ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, G.sup.1 and G.sup.
    Type: Grant
    Filed: August 28, 1991
    Date of Patent: August 25, 1992
    Inventor: Stephen A. DiBiase
  • Patent number: 5043470
    Abstract: A process is described for the separation and recovery of isocyanate monomers from isocyanate concentrates which leaves a residue which is liquid and burnable. The process for the separation and recovery of isocyanate monomers from isocyanate concentrates formed in the production of isocyanates and comprising a volatile isocyanate monomer and by-products comprises the steps of:(A) preparing a mixture comprising(A-1) the isocyanate concentrate; and(A-2) an oil solution comprising;(A-2-a) a major amount of hydrocarbon oil, and(A-2-b) a minor amount of at least one carboxylic ester obtained by reacting(A-2-b-1) at least one substituted succinic acylating agent with(A-2-b-2) at least one alcohol of the general formulaR.sub.3 (OH).sub.M (I)wherein R.sub.
    Type: Grant
    Filed: June 1, 1990
    Date of Patent: August 27, 1991
    Assignees: The Lubrizol Corporation, Mobay Corporation
    Inventors: Stephen A. DiBiase, Larry W. Arndt, Gregory M. Stansfield, Louis A. Renbaun
  • Patent number: 4800031
    Abstract: This invention is directed to lubricating and functional fluid compositions having improved antioxidant and extreme pressure properties and high temperature stability. The lubricant and functional fluid compositions comprise a major amount of at least one oil of lubricating viscosity and a minor amount of(A) a sulfur compound characterized by the structural formula ##STR1## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are each independently H or hydrocarbyl groups;R.sup.1 and/or R.sup.3 may be G.sup.1 or G.sup.2 ;R.sup.1 and R.sup.2 and/or R.sup.3 and R.sup.4 together may be alkylene groups containing about 4 to about 7 carbon atoms;G.sup.1 and G.sup.2 are each independently C(X)R, COOR, C.tbd.N, R.sup.5 --C.dbd.NR.sup.6, CON(R).sub.2 or NO.sub.2, and G.sup.1 also ay be a CH.sub.2 OH group, wherein X is O or S, R.sup.5 and each R are independently H or a hydrocarbyl group, R.sup.6 is H or a hydrocarbyl group;when both G.sup.1 and G.sup.2 are R.sup.5 C.dbd.NR.sup.6, the two R.sup.
    Type: Grant
    Filed: November 7, 1986
    Date of Patent: January 24, 1989
    Assignee: The Lubrizol Corporation
    Inventors: Stephen A. DiBiase, Joseph W. Pialet
  • Patent number: 4764297
    Abstract: A process for producing a sulfurized olefin product substantially free of ash containing waste is disclosed. The process involves dehydrohalogenation of an olefin/sulfur halide complex by contacting the complex with a protic solvent in the absence of any metal ion. The process allows for the solvolytic dehydrohalogenation of the complex. The sulfurized olefin product obtained is isolated and may be subjected to further processing to remove any remaining halides. The resulting sulfurized olefin is a useful additive in lubricating oils.
    Type: Grant
    Filed: March 20, 1987
    Date of Patent: August 16, 1988
    Assignee: The Lubrizol Corporation
    Inventors: Roger L. Sowerby, Stephen A. DiBiase
  • Patent number: 4755311
    Abstract: This invention is directed to borated amine salts of dihydrocarbyl monothiophosphoric acids, and to lubricating and functional fluid compositions containing said borated amine salts. The lubricating and functional fluid compositions have improved extreme pressure properties and high temperature stability.The borated amine salts of the invention may be characterized by the formula ##STR1## or mixtures thereof wherein R.sup.1 and R.sup.2 are each independently hydrocarbyl groups containing from 1 to about 30 carbon atoms. In one preferred embodiment, the amine salts are derived from hydroxyhydrocarbyl amines.The lubricating and functional fluid compositions may contain, in addition to the borated amine salts, at least one nitrogen-containing composition prepared by the reaction of a hydrocarbon-substituted succinic acid-producing compound with at least about one-half equivalent, per equivalent of acid-producing compound, of an amine containing at least one hydrogen attached to a nitrogen atom.
    Type: Grant
    Filed: August 14, 1986
    Date of Patent: July 5, 1988
    Assignee: The Lubrizol Corporation
    Inventors: Louis Burjes, Stephen A. DiBiase
  • Patent number: 4752416
    Abstract: Lubricating and functional fluid compositions are described which comprise at least one oil of lubricating viscosity and an extreme-pressure and friction-modifying amount of(A) at least one phosphite ester characterized by the formula ##STR1## wherein R.sup.1 is a straight-chain hydrocarbyl group and R.sup.2 is a branched-chain hydrocarbyl group. The invention also relates to compositions which comprise the combination of such phosphite esters as represented by Formula I and various sulfur-containing compositions. The compositions comprising said combinations also are useful in lubricating and functional fluid compositions including lubricating oils and greases. Aqueous systems containing the phosphite esters represented by Formula I as well as combinations of phosphite esters with sulfur-containing compositions also are described.
    Type: Grant
    Filed: December 11, 1986
    Date of Patent: June 21, 1988
    Assignee: The Lubrizol Corporation
    Inventors: Curtis R. Scharf, Stephen A. DiBiase, William C. Tritt
  • Patent number: 4740322
    Abstract: Sulfur-containing compositions are described which are prepared by sulfurizing(A) at least one fatty acid ester of a polyhydric alcohol, or(B) at least one fatty acid, fatty acid ester of a monohydric alcohol, or a mixture thereof, or(C) at least one other olefin, or(D) mixtures of any two or more of (A), (B) and (C), in the presence of a catalytic amount of(E) at least one salt of at least one dithiocarbamic acid of the formulaR.sub.1 (R.sub.2)N--CSSHwherein R.sub.1 and R.sub.2 are each independently hydrocarbyl groups, or(F) at least one mercapto benzothiazole, or(G) mixtures of (E) and (F).Preferably, various mixtures of (A), (B) and (C) are sulfurized in accordance with the invention.
    Type: Grant
    Filed: January 31, 1986
    Date of Patent: April 26, 1988
    Assignee: The Lubrizol Corporation
    Inventors: Stephen A. DiBiase, Roger L. Sowerby
  • Patent number: 4729840
    Abstract: Reaction products of 5-norbornene-2,3-dicarboxylic anhydride O,O-dialkyldithiophosphate adduct of the formula ##STR1## have been found to be beneficial additives for functional fluids used in the machinery of motorized vehicles. These additives are effective extreme pressure agents and antiwear agents as well as antioxidants for use in such functional fluids as lubricating oils including automatic transmission fluids and hydraulic fluids.
    Type: Grant
    Filed: July 11, 1986
    Date of Patent: March 8, 1988
    Assignee: The Lubrizol Corporation
    Inventors: Richard M. Lange, William C. Tritt, Stephen A. DiBiase
  • Patent number: 4690767
    Abstract: The hydrogen sulfide emission of oil-soluble sulfurized organic compounds is reduced by utilizing a hindered amine and optionally a carboxylic acid or acid anhydride in effective amounts.
    Type: Grant
    Filed: August 11, 1986
    Date of Patent: September 1, 1987
    Assignee: The Lubrizol Corporation
    Inventors: Stephen A. DiBiase, James N. Vinci
  • Patent number: 4623473
    Abstract: Sulfur-containing, oil-soluble compositions are described which are useful as lubricating oil additives, particularly in lubricants containing little or no phosphorus. In one embodiment, the compositions of the invention comprise (A) at least one metal salt of at least one dithiocarbamic acid of the formulaR.sub.1 (R.sub.2)N--CSSH (I)wherein R.sub.1 and R.sub.2 are each independently hydrocarbyl groups in which the total number of carbon atoms in R.sub.1 and R.sub.2 is sufficient to render the metal salt oil-soluble, and (B) at least one oil-soluble sulfurized Diels-Alder adduct. Lubricating oil compositions containing the compositions of the invention exhibit improved oxidation-corrosion-inhibiting properties, anti-wear properties, and/or extreme pressure properties. Such lubricating compositions containing less than about 0.1% by weight of phosphorus also exhibit good compatability with nitrile seals.
    Type: Grant
    Filed: January 31, 1985
    Date of Patent: November 18, 1986
    Assignee: The Lubrizol Corporation
    Inventors: Kirk E. Davis, Stephen A. DiBiase
  • Patent number: 4615818
    Abstract: The hydrogen sulfide emission of oil-soluble sulfurized organic compounds is reduced by utilizing a hindered amine and optionally a carboxylic acid or acid anhydride in effective amounts.
    Type: Grant
    Filed: March 15, 1985
    Date of Patent: October 7, 1986
    Assignee: The Lubrizol Corporation
    Inventors: Stephen A. DiBiase, James N. Vinci
  • Patent number: 4612129
    Abstract: Sulfur-containing, oil-soluble compositions are described which are useful as lubricating oil additives, particularly in lubricants containing little or no phosphorus. In one embodiment, the compositions of the invention comprise (A) at least one metal salt of at least one dithiocarbamic acid of the formulaR.sub.1 (R.sub.2)N--CSSH (I)wherein R.sub.1 and R.sub.2 are each independently hydrocarbyl groups in which the total number of carbon atoms in R.sub.1 and R.sub.2 is sufficient to render the metal salt oil-soluble, (B) at least one oil-soluble sulfurized organic compound, and (C) at least one auxiliary corrosion-inhibitor. In other embodiments, the compositions also contain (D) at least one detergent/dispersant. Lubricating oil compositions containing the compositions of the invention exhibit improved oxidation-corrosion-inhibiting properties, anti-wear properties, and/or extreme pressure properties. Such lubricating compositions containing less than about 0.
    Type: Grant
    Filed: January 31, 1985
    Date of Patent: September 16, 1986
    Assignee: The Lubrizol Corporation
    Inventors: Stephen A. DiBiase, Kirk E. Davis, Thomas A. Tagliamonte