Patents Represented by Attorney, Agent or Law Firm Marina V. Schneller
  • Tin-colating microporous crystalline materials and their use as dehydrogenation, dehydrocyclization reforming catalysts
    Patent number: 5192728
    Abstract: Group VIII metal modified non-acidic tin containing microporous crystalline materials which in catalysis exhibit high selectivity for dehydrogenation and dehydrocyclization are described.
    Type: Grant
    Filed: October 6, 1989
    Date of Patent: March 9, 1993
    Assignee: Mobil Oil Corporation
    Inventors: Ralph M. Dessau, Ernest W. Valyocsik, James C. Vartuli
  • Antiwear/antioxidant additives based on dimercapto derivatives of acrylates and methacrylates polymers and amine reaction products thereof
    Patent number: 5188746
    Abstract: The invention relates to zinc and phosphorus free additives for lubricating compositions which are produced by a free radical reaction between a dimercaptothiadiazole and monomer oligomer or homologue of acrylates or methacrylate, which in minor amounts impart antiwear/extreme pressure and antioxidation properties to the lubricant.
    Type: Grant
    Filed: November 1, 1990
    Date of Patent: February 23, 1993
    Assignee: Mobil Oil Corporation
    Inventor: Robert H. Davis
  • Dehydrocyclization and reforming catalyst
    Patent number: 5185484
    Abstract: A Pt/Ba/USY catalyst prepared with a high SiO.sub.2 /Al.sub.2 O.sub.3 ratio USY gives improved aromatics selectivity compared to other Pt/USY containing catalysts. The improved selectivity is a result of the method of catalyst preparation which includes incorporation of a Group IIA metal after platinum incorporation.
    Type: Grant
    Filed: December 26, 1989
    Date of Patent: February 9, 1993
    Assignee: Mobil Oil Corp
    Inventors: Kenneth J. Del Rossi, Garry W. Kirker, Albin Huss, Jr.
  • Biaxially oriented polypropylene film
    Patent number: 5182168
    Abstract: A thermoplastic film comprising a base layer of a thermoplastic resin which comprises polypropylene and a coating layer of an alkali metal salt of an alkyl sulfate is disclosed. The film is characterized by reduced COF and improved anti-blocking characteristics without the attendant problems associated with decreased clarity, adhesion and wettability common to films treated to improve their COF and anti-blocking characteristics. The disclosure also provides a process for making the film in which the polypropylene-coating thermoplastic resin is extruded into a sheet, said sheet oriented in the longitudinal direction to form a monoxially oriented film, said film coated with the alkali metal salt of an alkyl sulfate and said coated film oriented in the transverse direction.
    Type: Grant
    Filed: October 9, 1991
    Date of Patent: January 26, 1993
    Assignee: Mobil Oil Corporation
    Inventors: Shaw-Chang Chu, Kevin A. Kirk
  • Selective ortho propylation of phenol over large pore zeolite
    Patent number: 5175375
    Abstract: The invention relates to producing ortho isopropyl phenol catalytically by contacting phenol with isopropanol or propylene, at a temperature of from about 200.degree. C. to about 300.degree. C., with ZSM-12 and zeolite Beta; and recovering ortho isopropyl phenol.
    Type: Grant
    Filed: October 11, 1991
    Date of Patent: December 29, 1992
    Assignee: Mobil Oil Corporation
    Inventors: Clarence D. Chang, Stuart D. Hellring
  • Toluene disproportionation catalyst
    Patent number: 5173461
    Abstract: A catalyst comprising a molecular sieve having a lattice aluminum content in which the silica/alumina framework mole ratio is less than 55, and having a diffusion rate constant of less than about 150 sec.sup.-1 .times.10.sup.-6 is particularly useful for vapor-phase disproportionation of toluene.
    Type: Grant
    Filed: March 21, 1990
    Date of Patent: December 22, 1992
    Assignee: Mobil Oil Corporation
    Inventors: Robert P. Absil, Scott Han, David S. Shihabi, David O. Marler, Clarence D. Chang, Donna M. Mitko
  • LLDPE films by blending with specific polypropylenes
    Patent number: 5147936
    Abstract: A polymer blend including from about 80 to about 98 weight percent LLDPE and from about 2 to about 20 weight percent PP having an isotacticity of from about 70 to 90 percent, the blend having a viscosity ratio of LLDPE to PP greater than 3, improves the processability of LLPDE into films without loss in film properties.
    Type: Grant
    Filed: April 8, 1991
    Date of Patent: September 15, 1992
    Assignee: Mobil Oil Corporation
    Inventors: Perla N. Peszkin, Pradeep P. Shirodkar
  • Titania containing dehydrogenation catalysts
    Patent number: 5147837
    Abstract: The aging properties of Group VIII metal modified non-acidic microporous crystalline materials which in catalysis exhibit high selectivity for dehydrogenation and dehydrocyclization are improved by the incorporation therein of titanium and/or titania.
    Type: Grant
    Filed: October 22, 1990
    Date of Patent: September 15, 1992
    Assignee: Mobil Oil Corporation
    Inventors: Ralph M. Dessau, Ying-Yen P. Tsao
  • Preformed matrices containing zeolites
    Patent number: 5145659
    Abstract: A process for producing zeolites in a matrix material is described which comprises precipitating an oxide of silicon in the matrix to increase the silica of the matrix which is available for crystallization to a zeolite.
    Type: Grant
    Filed: November 20, 1989
    Date of Patent: September 8, 1992
    Assignee: Mobil Oil Corporation
    Inventor: John P. McWilliams
  • Preparation of hydroxyl-rich zeolites
    Patent number: 5143876
    Abstract: Zeolites (e.g. ZSM-5 and zeolite beta) enriched with hydroxyl groups are prepared by ammonia treatment of sieves which have suffered loss of tetrahedral aluminum from framework positions followed by careful calcination (200.degree.-450.degree. C.). The hydroxyl group created by this method are stable only to 500.degree. C.
    Type: Grant
    Filed: March 30, 1990
    Date of Patent: September 1, 1992
    Assignee: Mobil Oil Corporation
    Inventors: Clarence D. Chang, Stuart D. Hellring
  • Catalyst composition for production of linear low-density ethylene-hexene copolymers and films thereof
    Patent number: 5139986
    Abstract: The invention relates to catalysts for ethylene polymerization or copolymerization to produce film quality product which exhibits improved FDA hexane extractables. The invention also relates to catalysts for ethylene polymerization or copolymerization to produce film quality product which exhibits improved dart impact resistance. The invention relates to catalysts for ethylene polymerization or copolymerization to produce film quality product which exhibits improved MD tear properties.
    Type: Grant
    Filed: August 6, 1991
    Date of Patent: August 18, 1992
    Assignee: Mobil Oil Corporation
    Inventors: Pam J. Cook, Robert O. Hagerty, Per K. Husby, Thomas E. Nowlin
  • Low density polyethylene containing chemically bonded chromophores as UV prodegradants
    Patent number: 5134193
    Abstract: Polyethylene modified to contain chromophores which absorb at greater than 200 nm. are used to accelerate the degradaton of polyethylene on exposure to ultraviolet radiation.
    Type: Grant
    Filed: August 2, 1989
    Date of Patent: July 28, 1992
    Assignee: Mobil Oil Corporation
    Inventor: Frederick C. Scwab
  • Control of oligomer level in low pressure polyethylene reactor systems
    Patent number: 5126414
    Abstract: In accordance with the invention, the process comprises substantially eliminating distributor plate fouling in fluid bed reactor alpha olefin polymerizations, by removing oligomers from the recycle feeds to the fluid bed reactor. In accordance with the invention, the process comprises substantially eliminating gel production in the low pressure production of polymers and copolymers of ethylene. Unexpectedly, the process of the invention, which substantially eliminates distributor plate fouling also results in polymer products which are substantially free of gels.
    Type: Grant
    Filed: November 19, 1991
    Date of Patent: June 30, 1992
    Assignee: Mobil Oil Corporation
    Inventors: Quentin S. Cooke, Glyarpuram N. Prasad, John J. Schlueter, Jr., Grace O. Tsien
  • Production of mono-substituted alkylaromatics from C.sub.8 +N-paraffins
    Patent number: 5124497
    Abstract: A process for producing monosubstituted monoalkylaromatics from C.sub.8 +n-paraffins-containing feeds, by contacting the feeds with a non-acid catalyst comprising a microporous crystalline material containing tin, indium, thallium or lead, is disclosed.
    Type: Grant
    Filed: October 11, 1989
    Date of Patent: June 23, 1992
    Assignee: Mobil Oil Corporation
    Inventors: Ralph M. Dessau, Ernest W. Valyocsik, Randall D. Partridge
  • Non-acidic dehydrogenation catalyst of enhanced stability
    Patent number: 5122489
    Abstract: A metal selected from the group consisting of ruthenium, iridium or rhenium on non-acidic microporous crystalline materials also containing a dehydrogenation/hydrogenation metal enhances the aging characteristics and stability of the base catalyst.
    Type: Grant
    Filed: October 15, 1990
    Date of Patent: June 16, 1992
    Assignee: Mobil Oil Corporation
    Inventor: Ralph M. Dessau
  • Particulate polymer-supported olefin polymerization catalyst
    Patent number: 5118648
    Abstract: Supported olefin, e.g., alpha-olefin, polymerization catalyst compositions, such as Ziegler-Natta catalysts, are modified by using porous, polymer particles having an average pore diameter of at least about 10 .ANG. as the catalyst support. The resulting catalyst composition is more active than refractory oxide-supported catalysts and it is not susceptible to deactivation by catalyst poisons, such as oxygen or water. Additionally, the polymer particles need not be calcined prior to the catalyst synthesis.
    Type: Grant
    Filed: July 9, 1990
    Date of Patent: June 2, 1992
    Assignee: Mobil Oil Corporation
    Inventors: Allan B. Furtek, Binnur Z. Gunesin
  • Silica-alumina-organic amine product, its synthesis and use in zeolite production
    Patent number: 5110573
    Abstract: The invention relates to the synthesis of a precursor containing silicon and aluminun and an organic directing agent for zeolite syntheses and its use in zeolite production.
    Type: Grant
    Filed: August 16, 1990
    Date of Patent: May 5, 1992
    Assignee: Mobil Oil Corporation
    Inventor: Ivy D. Johnson
  • Zeolite MCM-22 catalysts for olefin isomerization
    Patent number: 5107047
    Abstract: The invention is a catalytic process for isomerizing an olefin under catalytic isomerization conditions, in the presence of an olefin isomerization catalyst comprising MCM-22. The light olefins are linear and/or branched olefins containing greater than three carbon atoms. The olefins can be contained in a fraction having a boiling range of from C.sub.5 + to 390.degree. F.
    Type: Grant
    Filed: January 28, 1991
    Date of Patent: April 21, 1992
    Assignee: Mobil Oil Corporation
    Inventors: Kenneth J. Del Rossi, Albin Huss, Jr.
  • Dehydrogenation of alcohols over non-acidic metal-zeolite catalysts
    Patent number: 5103066
    Abstract: The invention relates to a catalytic dehydrogenation of alcohols to produce ketones and/or aldehydes. The catalyst comprises a dehydrogenation metal and a non-acidic microporous crystalline material as a support. The support may contain indium, tin, thallium or lead, when the dehydrogenation metal is a Group VIII metal.
    Type: Grant
    Filed: December 10, 1990
    Date of Patent: April 7, 1992
    Assignee: Mobil Oil Corp.
    Inventor: Ralph M. Dessau
  • Zeolites of increased hydrogen adsorption capacity
    Patent number: 5102839
    Abstract: Hydroxyl rich zeolites containing 0.1 to 20 weight percent of a hydrogenation/dehydrogenation metal are described which have increased hydrogen adsorption capacity.
    Type: Grant
    Filed: January 9, 1991
    Date of Patent: April 7, 1992
    Assignee: Mobil Oil Corporation
    Inventors: William S. Borghard, Stuart D. Hellring