Patents Assigned to Mobil Oil Corp.
  • Patent number: 6258962
    Abstract: A process for the synthesis of alkylene carbonates, such as ethylene carbonate, by reacting alkylene oxides with carbon dioxide in the presence of a porous solid support catalyst containing an alkali or alkaline earth metal component.
    Type: Grant
    Filed: June 14, 1999
    Date of Patent: July 10, 2001
    Assignee: Mobil Oil Corp.
    Inventors: J. Scott Buchanan, Clarence D. Chang, Robert A. Crane, Lorenzo C. DeCaul, Zhaozhong Jiang, Jose G. Santiesteban, Hye Kyung Cho Timken
  • Patent number: 5576355
    Abstract: A method of inhibiting viruses in which a virus is contacted with diamondoid alcohol, ketone, ketone derivative, adamantyl amino acid, quaternary salt or combinations thereof which have antiviral properties. These diamondoid derivatives are shown to have antiviral activity against HIV.
    Type: Grant
    Filed: December 15, 1993
    Date of Patent: November 19, 1996
    Assignee: Mobil Oil Corp.
    Inventors: Catherine S. H. Chen, Dong-ming Shen
  • Patent number: 5516962
    Abstract: There are provided a catalyst, a method for making this catalyst, and a process for using this catalyst in the alkylation of an isoparaffin with an olefin to provide an alkylate. The catalyst may be made from an as-synthesized material which, upon calcination, is capable of generating zeolites designated MCM-22. The as-synthesized material is then combined with a binder material, such as alumina, by an extrusion process. The uncalcined bound material may then be ammonium exchanged, followed by a calcination treatment. The as-synthesized material may also be swollen with a suitable swelling agent, such as a cetyltrimethylammonium compound, prior to the binding process.
    Type: Grant
    Filed: August 1, 1994
    Date of Patent: May 14, 1996
    Assignee: Mobil Oil Corp.
    Inventors: Cynthia T.-W. Chu, Altaf Husain, Kathleen M. Keville, Daria N. Lissy
  • Patent number: 5516736
    Abstract: There is provided a method for selectivating a zeolite, such as ZSM-5 which may result in functionalization of the zeolite with at least one organosiliceous group of the formula, SiR.sub.n (OX).sub.4-n, where R is at least one hydrocarbyl group, n is 1 or 2 and X is Si or H. This selectivation method involves vapor phase treatment of a zeolite with an organosilicon compound having at least 2 silicon atoms. This organosilicon compound may be a silicone compound, such as hexamethyldisiloxane, or a silane compound such as hexamethyldisilane. This contacting may take place in the presence of hydrogen and an organic carrier. The functionalized zeolites may provide a catalyst which is both highly active and highly selective for converting aromatic hydrocarbons, especially alkylbenzene compounds, to products comprising the para-isomer of dialkylbenzenes. The disproportionation of toluene is an example of such a reaction.
    Type: Grant
    Filed: September 15, 1994
    Date of Patent: May 14, 1996
    Assignee: Mobil Oil Corp.
    Inventors: Clarence D. Chang, Paul G. Rodewald
  • Patent number: 5512338
    Abstract: A polymeric film structure having improved oxygen, flavor/odor, grease/oil and moisture barrier characteristics is disclosed. The structure includes a polymeric core sandwiched between an oxygen barrier on one side thereof and a moisture barrier on the other side of the polymeric core. The oxygen barrier includes polyvinyl alcohol cross-linked with aldehyde containing cross-linking agents in the presence of a catalytic amount of an inorganic acid, preferably sulfuric acid. The moisture barrier is a coating of polyvinylidene chloride, which also enhances the oxygen barrier of the polymeric film structure.
    Type: Grant
    Filed: July 21, 1994
    Date of Patent: April 30, 1996
    Assignee: Mobil Oil Corp.
    Inventors: Eber C. Bianchini, Anthony R. Knoerzer, Larry A. Parr, Leland W. Reid
  • Patent number: 5508113
    Abstract: Coating compositions which have improved oxygen and flavor/odor barrier characteristics are disclosed. The coating compositions are obtained by coating a polymeric substrate with an aqueous solution of polyvinyl alcohol and urea and drying the coating at a temperature sufficient to allow the polyvinyl alcohol and urea to crosslink such that urethane linkages are formed at least between the polymeric substrate and the coating composition. Polymeric film structures including coating compositions and a method of making the same are also disclosed.
    Type: Grant
    Filed: November 18, 1994
    Date of Patent: April 16, 1996
    Assignee: Mobil Oil Corp.
    Inventor: Anthony R. Knoerzer
  • Patent number: 5500109
    Abstract: There is provided a method for preparing an alumina bound, zeolite catalyst, wherein a zeolite of low silanol content is used as the source of zeolite used to prepare the catalyst. A particular zeolite used in this catalyst is zeolite Y. This catalyst may be combined with at least one hydrogenation component and used to hydrocrack hydrocarbons, such as gas oils. In particular, an NiW/USY/alumina catalyst may be used in a hydrocracking reaction to produce distillate boiling range hydrocarbons from higher boiling hydrocarbons.
    Type: Grant
    Filed: October 17, 1994
    Date of Patent: March 19, 1996
    Assignee: Mobil Oil Corp.
    Inventors: Kathleen M. Keville, Hye K. C. Timken, Robert A. Ware
  • Patent number: 5498814
    Abstract: A process and catalyst for Shape Selective Hydrocarbon Conversions such as the regioselective disproportionation of toluene to para-xylene wherein hydrocarbon to be converted is passed over a catalytic molecular sieve which is trim selectivated with a reaction stream comprising toluene and a silicon-containing high efficiency p-xylene selectivating agent under toluene conversion conditions. The toluene disproportionation process attains a single-pass para-xylene product over 95% coupled with a toluene conversion of at least 15%. The present invention also includes the highly para-selective catalyst which results from the treatment of a catalytic molecular sieve with a high efficiency p-xylene selectivating agent under the recited conditions.
    Type: Grant
    Filed: April 5, 1994
    Date of Patent: March 12, 1996
    Assignee: Mobil Oil Corp.
    Inventors: Clarence D. Chang, Paul G. Rodewald
  • Patent number: 5498743
    Abstract: A process is provided for synthesis of dialkylcarbonate, e.g., dimethylcarbonate, by reacting an alcohol, e.g., methanol, with a cyclic carbonate, e.g., propylene carbonate, in the presence of a catalyst comprising an alkaline earth metal halide, e.g., magnesium iodide, and a solid support having a high surface area and controlled surface hydroxyl concentration.
    Type: Grant
    Filed: October 20, 1994
    Date of Patent: March 12, 1996
    Assignee: Mobil Oil Corp.
    Inventors: Stuart S. Shih, Margaret M. Wu, Tsoung Y. Yan
  • Patent number: 5496649
    Abstract: An improved oxygen barrier layer for coating a substrate, such as a polymeric film. The oxygen barrier is a layer of cross-linked polyvinyl alcohol and glyoxal, which exhibits improved barrier characteristics to the transmission of oxygen. The oxygen barrier is produced by coating a solution of polyvinyl alcohol, glyoxal and tensoactive agent onto at least one side of a substrate adapted for receipt of such solution. The polyvinyl alcohol is thereafter cross-linked in the absence of a catalyst to provide the oxygen barrier.
    Type: Grant
    Filed: July 21, 1994
    Date of Patent: March 5, 1996
    Assignee: Mobil Oil Corp.
    Inventors: William M. Mallory, Eber C. Bianchini
  • Patent number: 5495059
    Abstract: A ex situ selectivated catalytic molecular sieve for enhanced shape selective hydrocarbon conversions in which a catalytic molecular sieve is modified by being exposed to at least two selectivation sequences, each sequence including an impregnation of the molecular sieve with a selectivating agent and a subsequent calcination of the impregnated molecular sieve. The ex situ selectivation method is also described, including the use of aqueous carriers for the selecting agent. Also a method for in situ trim-selectivating the modified catalytic molecular sieve. Also, a method for moderate steaming of the selectivated molecular sieve. Also a method for in situ trim-selectivating the modified catalytic molecular sieve. Also described is the process for shape selective hydrocarbon conversion comprising contacting a hydrocarbon feedstream under conversion conditions with the selectivated molecular sieve.
    Type: Grant
    Filed: November 14, 1994
    Date of Patent: February 27, 1996
    Assignee: Mobil Oil Corp.
    Inventors: Jeffrey S. Beck, Sharon B. McCullen, David H. Olson
  • Patent number: 5493065
    Abstract: There is provided a process for the liquid phase synthesis of ethylbenzene with a zeolite designated MCM-49. The process involves the alkylation of benzene with ethylene under liquid phase conditions.
    Type: Grant
    Filed: October 6, 1994
    Date of Patent: February 20, 1996
    Assignee: Mobil Oil Corp.
    Inventors: Jane C. Cheng, C. Morris Smith, Dennis E. Walsh
  • Patent number: 5487940
    Abstract: A polymeric film structure having improved oxygen and moisture barrier characteristics is disclosed. The structure includes a polymeric substrate adapted to receive an oxygen barrier on one side thereof and a moisture barrier on the other side of the oxygen barrier. The oxygen barrier includes polyvinyl alcohol cross-linked with aldehyde containing cross-linking agents in the presence of a catalytic amount of an inorganic acid, preferably sulfuric acid. The moisture barrier is a metallized polymeric composite, preferably metallized oriented polypropylene.
    Type: Grant
    Filed: August 31, 1994
    Date of Patent: January 30, 1996
    Assignee: Mobil Oil Corp.
    Inventors: Eber C. Bianchini, Anthony R. Knoerzer, Larry A. Parr, Leland W. Reid
  • Patent number: 5488194
    Abstract: A process is provided for selective catalytic conversion of certain hydrocarbon feedstocks to product rich in para-dialkyl substituted benzenes. The catalyst required in the process comprises a crystalline material having the structure of PSH-3, MCM-22 or MCM-49, or a mixture of said crystalline materials, said crystalline material having been treated with one or more monomeric or polymeric siloxane compounds which decompose to oxide or non-oxide ceramic or solid-state carbon species.
    Type: Grant
    Filed: May 16, 1994
    Date of Patent: January 30, 1996
    Assignee: Mobil Oil Corp.
    Inventors: Jeffrey S. Beck, Ralph M. Dessau
  • Patent number: 5476823
    Abstract: An ex situ selectivated catalytic molecular sieve for enhanced shape selective hydrocarbon conversions in which a catalytic molecular sieve is modified by being exposed to at least two selectivation sequences, each sequence including an impregnation of the molecular sieve with a selectivating agent and a subsequent calcination of the impregnated molecular sieve. The ex situ selectivation method is also described, including the use of low volatility organic carriers for the selectivating agent. Also, a method for moderate steaming of the ex situ selectivated molecular sieve. Also a method for in situ trim-selectivating the ex situ selectivated catalytic molecular sieve. Also described is the process for shape selective hydrocarbon conversion comprising contacting a hydrocarbon feedstream under conversion conditions with the modified catalytic molecular sieve.
    Type: Grant
    Filed: May 28, 1993
    Date of Patent: December 19, 1995
    Assignee: Mobil Oil Corp.
    Inventors: Jeffrey S. Beck, David H. Olson, Sharon B. McCullen
  • Patent number: 5475178
    Abstract: There is provided a catalyst comprising a heteropoly acid, such as phosphotungstic acid, supported on a mesoporous crystalline material, such as M41S. A particular form of this M41S support is designated as MCM-41. There is also provided a method for preparing this catalyst by impregnating the heteropoly acid on the support. There is also provided a process for using this catalyst to catalyze acid catalyzed reactions, such as the isomerization of paraffins and the alkylation of aromatics.
    Type: Grant
    Filed: August 18, 1994
    Date of Patent: December 12, 1995
    Assignee: Mobil Oil Corp.
    Inventors: Kenneth J. Del Rossi, Gregory A. Jablonski, Charles T. Kresge, Guenter H. Kuehl, David O. Marler, Gayatri S. Rav, Brenda H. Rose
  • Patent number: 5472638
    Abstract: A corrosion inhibitor is disclosed which is produced by reacting an aqueous alkanolamine solution with an acid gas to form an amide and an alkanolamine salt, mixing aqueous alkanolamine with said amide and said alkanolamine salt in the absence of added inorganic base, and reacting the mixture at elevated temperature.
    Type: Grant
    Filed: April 28, 1994
    Date of Patent: December 5, 1995
    Assignee: Mobil Oil Corp.
    Inventors: Bruce D. McLaughlin, Tsoung Y. Yan
  • 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
  • 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
  • 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