Patents Represented by Attorney Alexander J. McKillop

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  • Method of extruding ethylene-vinyl alcohol copolymer (EVOH)
    Patent number: 5460760
    Abstract: According to the present invention, the copolymers of ethylene vinyl alcohol are extruded using extrusion equipment coated with a fluoropolymer. This method improves the processability, alleviates/slows down die buildup, improves the extrudate quality by reducing die lines on surfaces of the extruded product.
    Type: Grant
    Filed: April 18, 1994
    Date of Patent: October 24, 1995
    Assignee: Mobil Oil Corporation
    Inventors: Mingliang L. Tsai, Tien-Kuei Su
  • Olefin polymerization catalysts
    Patent number: 5461017
    Abstract: An improved catalyst for the polymerization of olefins comprising at least one metallocene and at least one aluminoxane co-catalyst supported on a substrate comprising a cross-linked polymeric, porous, resin wherein at least one of the monomers in the resin has at least one pendant functional group which is not reactive under the conditions of the formation of the substrate, and therefore survives the copolymerization which forms the substrate. One specific cross-linked resin is a copolymer of styrene, divinyl benzene and acetoxy styrene.
    Type: Grant
    Filed: March 4, 1994
    Date of Patent: October 24, 1995
    Assignee: Mobil Oil Corporation
    Inventors: Allan B. Furtek, Ronald S. Shinomoto
  • Method for removing alkaline sulfate scale
    Patent number: 5458860
    Abstract: The present invention relates to the use of low frequency sonic energy within the range of 1.25 to 6.5 KHz, preferably less than 2.0 KHz and most preferably 1.25 KHz, for enhancing the dissolution of alkaline earth metal scales from well bores using a scale-removing solvent comprising an aqueous alkaline solution having a pH of about 8 to about 14 and containing EDTA or DTPA and a catalyst or synergist, preferably an oxalate anion. When the scale deposit is contacted with the scale removing solvent while simultaneously transmitting low frequency sonic energy through the solvent, substantially more scale is dissolved at a faster rate than previously possible.
    Type: Grant
    Filed: September 9, 1994
    Date of Patent: October 17, 1995
    Assignee: Mobil Oil Corporation
    Inventors: Richard L. Morris, James M. Paul
  • Catalytic conversion with improved catalyst
    Patent number: 5456821
    Abstract: A process is provided for converting feedstock hydrocarbon compounds over a catalyst composition which comprises a large-pore molecular sieve component and an additive catalyst component, said additive catalyst component having been formulated in a special way to provide an improved catalyst and conversion process. An embodiment of the present invention comprises an improved catalytic cracking process to produce high octane gasoline, and increased lower olefins, especially propylene and butylene.
    Type: Grant
    Filed: August 17, 1994
    Date of Patent: October 10, 1995
    Assignee: Mobil Oil Corp.
    Inventors: Robert P. L. Absil, Jocelyn A. Kowalski
  • Naphthalene alkylation process using mixed H/NH3 form catalyst
    Patent number: 5457254
    Abstract: Long chain alkyl substituted naphthalenes are produced by alkylating naphthalene with an olefin or other alkylating agent with at least 6, and usually 12 to 20 carbon atoms, in the presence of an alkylation catalyst comprising a zeolite having both ammonium and protonic species associated with the exchangeable sites of the zeolite. The zeolite is usually a large pore size zeolite such as USY. The presence of both ammonium and protonic species increases selectivity for production of long chain mono-alkyl substituted naphthalenes in preference to more highly substituted products.
    Type: Grant
    Filed: December 27, 1993
    Date of Patent: October 10, 1995
    Assignee: Mobil Oil Corporation
    Inventors: Susan C. Ardito, Henry Ashjian, Thomas F. Degnan, Terry E. Helton, Quang N. Le, Augusto R. Quinones
  • Carboxylic acid/ester products as multifunctional additives for fuels
    Patent number: 5456731
    Abstract: Reaction products of hydrocarbylcarboxylic anhydrides and aminoalkanols can provide effective antiwear, antirust, and corrosion-inhibiting properties in lubricant and fuel applications.
    Type: Grant
    Filed: June 29, 1994
    Date of Patent: October 10, 1995
    Assignee: Mobil Oil Corporation
    Inventors: David A. Blain, Robert H. Davis, Andrew G. Horodysky, Shi-Ming Wu
  • Isoparaffin/olefin alkylation with minimal acid inventory
    Patent number: 5457257
    Abstract: A process for alkylating an isoparaffin with an olefin in the presence of a catalyst comprising HF, BF.sub.3, and a hydroxylic promoter wherein the total acid dosage as defined herein is less than about 1 weight percent of the total hydrocarbon reactants and the molar ratio of BF.sub.3 to the sum of the moles of HF and hydroxylic promoter is greater than zero and less than about 1.
    Type: Grant
    Filed: May 13, 1994
    Date of Patent: October 10, 1995
    Assignee: Mobil Oil Corporation
    Inventors: Clarence D. Chang, Paul G. Rodewald
  • Catalytic dewaxing process for producing lubricating oils
    Patent number: 5456820
    Abstract: A process for making a lubricant oil of low pour point which comprises a) catalytically dewaxing a lube boiling range feedstock in the presence of hydrogen over a dewaxing catalyst comprising an intermediate pore size zeolite in the hydrogen or decationized form during a dewaxing cycle in which the temperature is progressively increased to maintain a substantially constant product pour point to produce a lubricant oil product of improved oxidation stability. The feedstock is sequenced during a dewaxing cycle from a heavy feed to a lighter feed in order to avoid contacting the lighter feed with the catalyst in its most active conditions.
    Type: Grant
    Filed: December 23, 1991
    Date of Patent: October 10, 1995
    Assignee: Mobil Oil Corporation
    Inventors: Thomas R. Forbus, Jr., David S. Shihabi, Chwan P. Kyan, Robert W. Bortz, Rene B. LaPierre
  • Shape selective hydrocarbon conversion over pre-selectivated, activated catalyst
    Patent number: 5455213
    Abstract: A process for a shape selective hydrocarbon conversion such as toluene disproportionation involves contacting a reaction stream under conversion conditions with a catalytic molecular sieve which has been pre-selectivated and concurrently activated by contact with a substantially aqueous solution of an organosilicon compound. The invention also includes a method for concurrently preselectivating and activating a catalyst and the shape selectivated, activated catalyst which results from this method.
    Type: Grant
    Filed: July 8, 1994
    Date of Patent: October 3, 1995
    Assignee: Mobil Oil Corp.
    Inventors: Clarence D. Chang, Paul G. Rodewald
  • Metallocenes supported on ion exchange resins
    Patent number: 5455214
    Abstract: A catalyst precursor composition comprises the reaction product of a cation exchange resin containing trityl carbonium ions contacted with a metallocene. The process of producing the reaction product of a cation exchange resin containing trityl carbonium ions contacted with a metallocene comprises(1) providing a cation exchange resin which has cations,(2) contacting the cation exchange resin with a solution comprising a trityl halide complex and solvent therefor to form an intermediate; and(3) contacting the intermediate with a metallocene, preferably a zirconocene salt.The resulting composition can be used to form ethylene resins in an alumoxane free system.
    Type: Grant
    Filed: September 9, 1993
    Date of Patent: October 3, 1995
    Assignee: Mobil Oil Corporation
    Inventors: Allan B. Furtek, Michael J. Krause
  • Process for preparing short chain alkyl aromatic compounds
    Patent number: 5453554
    Abstract: Relatively short chain alkyl aromatic compounds are prepared by alkylating an alkylatable aromatic compound with a relatively short chain alkylating agent under sufficient reaction conditions in the presence of a catalyst comprising zeolite MCM-56. The liquid phase syntheses of ethylbenzene and cumene are particular examples of such MCM-56 catalyzed reactions.
    Type: Grant
    Filed: May 26, 1994
    Date of Patent: September 26, 1995
    Assignee: Mobil Oil Corp.
    Inventors: Jane C. Cheng, Anthony S. Fung, Donald J. Klocke, Stephen L. Lawton, Daria N. Lissy, Wieslaw J. Roth, C. Morris Smith, Dennis E. Walsh
  • Oligomerization process for producing synthetic lubricants
    Patent number: 5453556
    Abstract: There is provided an oligomerization process. The process involves the use of a catalyst comprising an acidic solid. The acidic solid may comprise a Group IVB metal oxide, such as zirconia, modified with an oxyanion of a Group VIB metal, such as tungsten. The oligomers produced by this process may be hydrogenated to produce thermally stable lubricants and lubricant additives.
    Type: Grant
    Filed: June 22, 1994
    Date of Patent: September 26, 1995
    Assignee: Mobil Oil Corporation
    Inventors: Clarence D. Chang, Scott Han, Jose G. Santiesteban, Margaret M. Wu, Yusheng Xiong
  • Cementing efficiency in horizontal wellbores via dual density fluids and cements
    Patent number: 5452764
    Abstract: A well completion process for improved cement placement in a horizontal wellbore where dual density cleaning fluids are circulated down the wellbore for conditioning and cleaning it. Afterwards, a production tube containing centralizers is positioned centrally within the wellbore. Next, "spacer fluids" of higher and lower densities are circulated within an annulus formed by the space between the tube and the wellbore so as to more substantially clean the annulus out. Subsequently, a cement having a density greater than the spacer fluid is pumped into the annulus. Thereafter, a light weight cement is pumped into the annulus thereby overriding the heavier cement and removing voids in the annulus resulting in more efficient cement placement.
    Type: Grant
    Filed: November 15, 1993
    Date of Patent: September 26, 1995
    Assignee: Mobil Oil Corporation
    Inventor: Alfred R. Jennings, Jr.
  • Selective 1,2-diarylethane synthesis
    Patent number: 5453555
    Abstract: There is provided a process for reacting a 2-arylethanol, such as 2-phenethanol, with an aromatic compound, such as toluene, to produce a 1,2-diarylethane, such as 2-phenethyltoluene. The reaction involves the use of a catalyst comprising an acidic solid oxide, such as ZSM-5, zeolite Beta, MCM-22 or ZSM-12.
    Type: Grant
    Filed: November 22, 1993
    Date of Patent: September 26, 1995
    Assignee: Mobil Oil Corp.
    Inventors: Clarence D. Chang, Stuart D. Hellring
  • Process for making tertiary-thiols
    Patent number: 5453544
    Abstract: A process for making t-butylthiol by reacting hydrogen sulfide and an olefin having a carbon number of 3 to 15 in the presence of a HZSM-5, HZSM-12, or MCM-22 zeolite catalyst. The reaction takes place under autogenous pressure conditions and a temperature of about 70.degree. C. to about 160.degree. C.
    Type: Grant
    Filed: June 6, 1994
    Date of Patent: September 26, 1995
    Assignee: Mobil Oil Corporation
    Inventor: Thomas J. Giacobbe
  • Catalyst and process for producing low-aromatics distillates
    Patent number: 5451312
    Abstract: This invention provides a process for producing a distillate boiling-range hydrocarbon product which comprises hydrotreating a hydrodesulfurized aromatic, substantially dealkylated hydrocarbon feed produced by the catalytic cracking of a hydrocarbon fraction, the feed having an initial boiling point of at least 300.degree. F., an aromatic content of at least about 30 weight percent, a hydrogen content not more than about 12 weight percent and a sulfur content of not more than 5000 ppmw, in the presence of a catalyst comprising an inorganic, non-layered, porous, crystalline phase material having pores with diameters of at least about 13 .ANG. and exhibiting, after calcination, an X-ray diffraction pattern with at least one peak with a relative intensity of 100 at a d-spacing greater than about 18 .ANG.
    Type: Grant
    Filed: October 26, 1993
    Date of Patent: September 19, 1995
    Assignee: Mobil Oil Corporation
    Inventors: Minas R. Apelian, Thomas F. Degnan, Stuart S. Shih
  • Alpha-olefin oligomerization using supported metal halide catalysts
    Patent number: 5451704
    Abstract: A process for the production of hydrocarbon lubricant basestock comprises contacting C.sub.2 to C.sub.20 alpha-olefin feedstock, or mixtures thereof, e.g., 1-decene, under heterogeneous oligomerization conditions with a catalyst comprising halides of a metal component anchored on an adsorbent inorganic oxide solid, e.g., silica, by an oxygen-metal bond to provide a reaction mixture containing said hydrocarbon lubricant basestock. The catalyst is prepared by contacting the inorganic oxide solid with organic metal halide of the formula RMXY wherein R is alkyl or aryl, M is aluminum, X is halogen and Y is selected from the group consisting of halogen, alkyl, alkenyl, aryl, alkoxy, and amido moieties.
    Type: Grant
    Filed: May 5, 1993
    Date of Patent: September 19, 1995
    Assignee: Mobil Oil Corporation
    Inventors: Suzzy C. Ho, Margaret M. Wu
  • Plastic films with surface anti-fog properties
    Patent number: 5451460
    Abstract: This invention provides a water-based, insoluble, heat-sealable, anti-fog coating composition to be used for polymer films. The anti-fog composition of the invention includes a non-ionic, hydrophilic surfactant, a hydrophobic binder compatible with the surfactant in an aqueous medium in an amount sufficient to form an emulsion. A heat-sealable polymer film coated with the heat-sealable anti-fog coating composition of the invention is also provided together with a method for preparing the same.
    Type: Grant
    Filed: June 24, 1993
    Date of Patent: September 19, 1995
    Assignee: Mobil Oil Corp.
    Inventors: Pang-Chia Lu, Leland W. Reid
  • Method of forming perforations in a structure during molding thereof
    Patent number: 5451356
    Abstract: A thermoforming technique for making a shaped article from a web of polystryrene foam sheet or the like, with simultaneous forming and perforation of the article. Serrated cutter and spaced mandrel elements mounted in opposing mold sections provide a perforated pattern in the sheet.
    Type: Grant
    Filed: March 24, 1994
    Date of Patent: September 19, 1995
    Assignee: Mobil Oil Corporation
    Inventor: Gregg A. Hebert
  • Foldable zipper slider with improved compression-type latch
    Patent number: 5448808
    Abstract: A plastic zipper slider having hinged wings is provided with an improved latch tongue which is deflected downward to snap in place. Additional flexible latch web structure cooperates with the latch tongue to provide additional forces which are active in assuring that the wings are fully latched and to also provide additional resistance to unlatching the wings.
    Type: Grant
    Filed: June 20, 1994
    Date of Patent: September 12, 1995
    Assignee: Mobil Oil Corporation
    Inventor: Jon Gross