Patents Represented by Attorney George J. Darsa
  • Patent number: 5597944
    Abstract: The dehydrogenation of n-parrofins to n-olefins is catalyzed by novel synthetic manganese oxide octahedral molecular sieves such as OMS-1 and OMS-2.
    Type: Grant
    Filed: November 7, 1994
    Date of Patent: January 28, 1997
    Assignee: Texaco Inc.
    Inventors: Chi-Lin O'Young, Robert A. Sawicki, Yuan-Gen Yin, Wen-Qing Xu, Steven L. Suib
  • Patent number: 5534040
    Abstract: A process for upgrading plastic material containing inorganic filler or reinforcement material for use as feedstock in a partial oxidation gas generator for the production of raw synthesis gas, fuel gas, or reducing gas. The plastic material is granulated and partially liquefied by heating in a closed autoclave at a temperature in the range of about 400.degree. F. to 495.degree. F. and a pressure in the range of about 150 psig to 750 psig while the plastic material is in contact with a pumpable hydrocarbonaceous liquid solvent. A pumpable slurry is thereby produced comprising solubilized plastic, unsolubilized plastic, hydrocarbonaceous liquid solvent, separated inorganic material and unseparated inorganic material. After removing the separated inorganic material, the remainder of the slurry is then reacted by partial oxidation to produce said raw synthesis gas, fuel gas or reducing gas.
    Type: Grant
    Filed: March 31, 1995
    Date of Patent: July 9, 1996
    Assignee: Texaco Inc.
    Inventors: Motasimur R. Khan, Christine C. Albert, Stephen J. DeCanio
  • Patent number: 5523509
    Abstract: Synthetic manganese oxide octahedral molecular sieves, e.g., OMS-1 and OMS-2, are employed as acid-base catalysts in a variety of acid-base organic conversion reactions.
    Type: Grant
    Filed: November 7, 1994
    Date of Patent: June 4, 1996
    Assignee: Texaco Inc.
    Inventors: Chi-Lin O'Young, Robert A. Sawicki, Yan-Fei Shen, Steven L. Suib
  • Patent number: 5523510
    Abstract: A process of converting linear olefins to branched olefins by a skeletal isomerization reaction wherein said reaction is carried out at a temperature of between about 300.degree. C. and about 650.degree. C., under a pressure of between about 0.1 and about 100 atmospheres and a space velocity of said linear olefins of between about 0.1 and about 40 WHSV in the presence of a steamed then acid washed zeolite ferrierite catalyst.
    Type: Grant
    Filed: August 30, 1993
    Date of Patent: June 4, 1996
    Assignee: Texaco Inc.
    Inventors: Regis J. Pellet, Chi-Lin O'Young, John Hazen, Alison E. Hadowanetz, James E. Browne
  • Patent number: 5520829
    Abstract: Lube oils of improved properties contain ethylene-propylene copolymer bearing moieties derived from the reaction product of allyl glycidyl ether and a heterocyclic amine such as N-(3-aminopropyl) morpholine.
    Type: Grant
    Filed: January 10, 1995
    Date of Patent: May 28, 1996
    Assignee: Texaco Inc.
    Inventors: Maria M. Kapuscinski, Christopher S. Liu, Larry D. Grina, Ronald E. Jones
  • Patent number: 5512190
    Abstract: The present invention provides a lubricating oil additive which provides anti-wear properties to a lubricating oil. The additive is the reaction product of 2,5-dimercapto-1,3,4-thiadiazole and a mixture of unsaturated mono-, di-, and tri-glycerides. The present invention also provides a lubricating oil additive with anti-wear properties produced by reacting a mixture of unsaturated mono-, di-, and tri-glycerides with diethanolamine to provide an intermediate reaction product and reacting the intermediate reaction product with 2,5-dimercapto-1,3,4-thiadiazole.
    Type: Grant
    Filed: August 22, 1994
    Date of Patent: April 30, 1996
    Assignee: Texaco Inc.
    Inventors: Gregory P. Anderson, Julian H. Dancy, Doris Love, Jayne M. Lucas
  • Patent number: 5498827
    Abstract: A process for upgrading plastic material containing inorganic filler or reinforcement material for use as feedstock in partial oxidation gas generator for the production of raw synthesis gas, fuel gas, or reducing gas. The plastic material is granulated and mixed with water to produce the plastic sludge. The plastic sludge is preheated at a temperature in the range of about 350.degree. F. to 475.degree. F. in the absence of air in a closed system. The preheated plastic sludge is then hydrothermally treated at a temperature in the range of about 450.degree. F. to 650.degree. F. at a pressure in the range of about 100 to 1200 psig and above the vapor pressure of water at that temperature. The hydrothermally treated plastic sludge is cooled, degassed, and mixed with ground solid carbonaceous fuel, e.g., coal and water, to produce a pumpable aqueous slurry having a solids content in the range of about 40 to 60 wt. %.
    Type: Grant
    Filed: October 4, 1993
    Date of Patent: March 12, 1996
    Assignee: Texaco Inc.
    Inventors: Motasimur R. Khan, Christine C. Albert, Stephen J. DeCanio
  • Patent number: 5491256
    Abstract: A composition of matter comprising ureas, biurets or allophanates structurally represented, respectively, by ##STR1## where R is hydrogen or a (C.sub.1 -C.sub.50) linear or branched aliphatic, alkenyl, alkynyl or aryl hydrocarbon; ##STR2## where R is hydrogen or a (C.sub.1 -C.sub.50) linear or branched aliphatic, alkenyl, alkynyl or aryl hydrocarbon; or ##STR3## where R is hydrogen or a (C.sub.1 -C.sub.50) linear or branched aliphatic, alkenyl, alkynyl or aryl hydrocarbon.
    Type: Grant
    Filed: April 4, 1994
    Date of Patent: February 13, 1996
    Assignee: Texaco Inc.
    Inventors: Thomas F. Derosa, Rodney L. Sung, Benjamin J. Kaufman
  • Patent number: 5484462
    Abstract: A fuel composition comprising a mixture of hydrocarbons boiling in the range from about 320.degree. F. to 620.degree. F. and a sulfur content of about 0.05 wt. %, or below, containing from about 1 to about 20 PTB of aminoalkylmorpholine having the formula: ##STR1## where R is hydrogen of a C.sub.1 -C.sub.10 alkyl radical, and n is a number between 2 and about 10.
    Type: Grant
    Filed: September 21, 1994
    Date of Patent: January 16, 1996
    Assignee: Texaco Inc.
    Inventor: Sheldon Herbstman
  • Patent number: 5484554
    Abstract: A selective deslagging operation is conducted in a partial oxidation reactor wherein a first predetermined portion of the reactor is selectively deslagged by derivatization while limiting derivatizing slag conditions in a second predetermined portion of the reactor. Selective deslagging can be accomplished by controlled oxidation conditions in the reactor that vary from one predetermined portion of the reactor to another. Thus, the slag present in one predetermined portion is derivatized and fluidized for removal from the reactor at a faster rate than the slag present in another portion of the reactor, which is not derivatized or is subjected to more limited derivatizing slag conditions. Derivatized slag can be differentiated from non-derivatized slag that does not flow or more limited derivatized slag that has a lower mass flow rate then the derivatized slag at conditions of controlled oxidation. The derivatized slag can then be selectively removed because it has attained a lower fluidizing temperature.
    Type: Grant
    Filed: August 15, 1994
    Date of Patent: January 16, 1996
    Assignee: Texaco Inc.
    Inventors: Dinh-Cuong Vuong, Donald D. Brooker, James S. Falsetti, James K. Wolfenbarger
  • Patent number: 5482520
    Abstract: The present invention provides a chemical composition comprising a t-butyl calix[8]arene encapsulated cyanuric acid derivatized with at least one C.sub.4 -C.sub.50 n-alkyl halide, n-alkaryl halide, aryl halide or polyoxyalkylene halide.
    Type: Grant
    Filed: June 17, 1994
    Date of Patent: January 9, 1996
    Assignee: Texaco Inc.
    Inventors: Iftikhar Alam, Rodney L. D. Sung
  • Patent number: 5468264
    Abstract: A gasoline fuel composition comprising a major portion of gasoline and a minor portion of one or more polyaryl amines, effective to increase the octane number of the gasoline composition, represented by the formula: ##STR1## where R.sup.1 -R.sup.5 are independently hydrogen or C.sub.1 -C.sub.8 aliphatic hydrocarbons; R.sup.6 -R.sup.8 are independently hydrogen or C.sub.1 -C.sub.6 aliphatic hydrocarbons; x is between 0 and about 2, inclusive, y is between 0 and about 3, inclusive; and z is between about 1 and about 50, inclusive.
    Type: Grant
    Filed: November 1, 1994
    Date of Patent: November 21, 1995
    Assignee: Texaco Inc.
    Inventors: Thomas F. DeRosa, William M. Studzinski, Joseph M. Russo, Benjamin J. Kaufman, Robert T. Hahn
  • Patent number: 5468262
    Abstract: A liquid jet fuel composition comprising:(a) a major portion of a liquid fuel; and(b) a minor effective portion of a thermal stabilizing additive prepared by(i) reacting a polyamine, an aldehyde and a phenol containing active hydrogen to form a phenol - aldehyde - amine condensate; and(ii) reacting said phenol - aldehyde - amine condensate and a succinic acid anhydride bearing a polyolefin - derived substituent containing residual unsaturation, thereby forming a phenol - aldehyde amine Mannich condensate polyamine succinimide product additive; and(iii) recovering said product additive.
    Type: Grant
    Filed: April 19, 1993
    Date of Patent: November 21, 1995
    Assignee: Texaco Inc.
    Inventors: William P. Acker, Robert T. Hahn, Thomas J. Mach, Rodney L. Sung
  • Patent number: 5464592
    Abstract: A gasifier for partially combusting a carbonaceous fuel mixture in the combustion chamber of the gasifier. The latter includes a water bath into which the hot effluent or products of combustion are immersed, including a synthetic gas. The products of combustion are directed into the bath by way of a constricted throat section. To avoid excessive erosion action and/or thermal shock to the throat section as a result of exposure to the effluent's high temperatures, the throat section is structured with an internal framework of pipes. The framework is communicated with a pressurized source of a cooling fluid, preferably water, whereby to cool the throat section sufficiently to counteract the ill effects of exposure to contact with the high temperature effluent.
    Type: Grant
    Filed: November 22, 1993
    Date of Patent: November 7, 1995
    Assignee: Texaco Inc.
    Inventors: Donald D. Brooker, James S. Falsetti, James K. Wolfenbarger, Dinh-Cuong Vuong
  • Patent number: 5463160
    Abstract: The selective conversion by skeletal isomerization over steam pretreated ferrierite zeolite-based catalysts having pore sizes of at least about 4.2 Angstroms and a pore structure characterized by intersecting 10-MR and 8-MR channels. The steam pretreated ferrierite zeolite-based catalysts have sufficient acidity to catalyze the skeletal isomerization of normal olefins. The catalysts can be used to produce isoolefins for reaction with alcohols in integrated processes to produce tertiary amyl methyl ethers such as TAME.
    Type: Grant
    Filed: August 30, 1993
    Date of Patent: October 31, 1995
    Assignee: Texaco Inc.
    Inventors: Erven J. Kuhlmann, James R. Pascoe, Christopher J. Thom
  • Patent number: 5461904
    Abstract: It is an object of the present invention to provide a leak detection means that directs any leaked fluid to a single preselected radial point where it contacts and activates an indicating means. The means for defining the leakage flow path to the indicating means also acts as a barrier preventing contamination of the flange bolts by any leaking fluid.
    Type: Grant
    Filed: September 13, 1993
    Date of Patent: October 31, 1995
    Assignee: Texaco Limited
    Inventor: Peter Baker
  • Patent number: 5458808
    Abstract: A process is provided for continuously controlling the hydrocarbon heat content and flow rate of a partial oxidation unit feed-gas stream under conditions where the composition and hence the hydrocarbon heat content of the feed-gas stream is subject to variation. The hydrocarbon heat content of the incoming gases is continuously measured and compared against a design hydrocarbon heat content. An evaluating means calculates whether a moderator is required to decrease the hydrocarbon heat content to the design hydrocarbon heat content or a supplemental high hydrocarbon heat content gas is required to increase the hydrocarbon heat content to the design hydrocarbon heat content. The process utilizes recycle synthesis gas as a moderator.
    Type: Grant
    Filed: January 7, 1994
    Date of Patent: October 17, 1995
    Assignee: Texaco Inc.
    Inventors: Robert M. Suggitt, Raymond F. Wilson, Wing-Chiu F. Fong
  • Patent number: 5445659
    Abstract: A process for converting scrap plastic material into a high quality transportation fuel. The plastic material is granulated and mixed with granulated solid carbonaceous fuel e.g. coal and liquid hydrocarbonaceous solvent e.g. waste motor oil to produce a plastic-containing sludge. The plastic-containing sludge is liquefied in a closed autoclave while in contact with hydrogen gas. A pumpable slurry from the autoclave is heated and fractionated in a fractionation zone to produce a hydrocarbonaceous distillate which may be used for transportation fuel. A bottoms stream from the fractionation zone comprising liquid hydrocarbonaceous material and inorganic material is reacted by partial oxidation to produce nontoxic slag and raw synthesis gas, fuel gas or reducing gas which may be purified in a gas purification zone.
    Type: Grant
    Filed: October 4, 1993
    Date of Patent: August 29, 1995
    Assignee: Texaco Inc.
    Inventors: Motasimur R. Khan, Christine C. Albert, Stephen J. DeCanio
  • Patent number: 5445731
    Abstract: Apparatus for breaking or separating a liquid mixture or emulsion having two or more components. The apparatus includes a closed vessel having one or more sequentially connected filtering compartments holding a filtering element such as a membrane assembly capable of achieving a multi-stage pervaporation to separate out a vaporous component of the solution. The apparatus further includes a bypass facility which interconnects adjacent filtering compartments. To compensate for the loss of heat energy during the vaporization segments, the residual liquid solution is bypassed into a second vaporization phase, the bypass facility including heating means for maintaining the residual solution of a predetermined liquid temperature prior to its entering the second or subsequent filtering phase.
    Type: Grant
    Filed: September 8, 1993
    Date of Patent: August 29, 1995
    Assignee: Texaco Inc.
    Inventors: David Tuohey, Craig R. Bartels, Vatsal M. Shah
  • Patent number: 5445750
    Abstract: A lubricating oil composition comprising(1) a major portion of a lubricating oil of a base oil viscosity, and(2) a minor portion of an antioxidant-dispersant lubricating additive prepared by the process comprising:(a) reacting a polyethyleneamine with an alkenylsuccinic acid anhydride to form a mono- and/or bis-alkenylsuccinimide;(b) adding to said mono-and/or bis-alkenylsuccinimide, a bis(hydroxyaromatic) substituted carboxylic acid and, optionally, another acylating agent to form an acylated mono-and/or bis-alkenylsuccinimide;(c) recovering said acylated mono-and/or bis-alkenylsuccinimide.
    Type: Grant
    Filed: September 3, 1993
    Date of Patent: August 29, 1995
    Assignee: Texaco Inc.
    Inventors: Harry Chafetz, Christopher S. Liu, Brian L. Papke, Thomas A. Kennedy