Patents Represented by Attorney D. M. Tyus
  • Patent number: 8017540
    Abstract: A method of preparing a crystalline molecular sieve is provided, which method comprises (a) providing a reaction mixture comprising at least one source of ions of tetravalent element Y, at least one source of alkali metal hydroxide, water, optionally at least one seed crystal, and optionally at least one source of ions of trivalent element X, said reaction mixture having the following mole composition: Y:X2=10 to infinity OH?:Y=0.001 to 2 M+:Y=0.001 to 2 ?wherein M is an alkali metal and the amount of water is at least sufficient to permit extrusion of said reaction mixture; (b) extruding said reaction mixture to form a pre-formed extrudate; and (c) crystallizing said pre-formed extrudate under vapor phase conditions in a reactor to form said crystalline molecular sieve whereby excess alkali metal hydroxide is removed from the pre-formed extrudate during crystallization. The crystalline molecular sieve product is useful as catalyst in hydrocarbon conversion processes.
    Type: Grant
    Filed: October 1, 2010
    Date of Patent: September 13, 2011
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Wenyih Frank Lai, Robert Ellis Kay
  • Patent number: 7842277
    Abstract: This disclosure relates to a crystalline MCM-22 family molecular sieve composition having, in its as-synthesized form, an X-ray diffraction pattern including a peak at d-spacing maximum of 12.33±0.23 Angstroms, a distinguishable peak at a d-spacing maximum between 12.57 to about 14.17 Angstroms and a non-discrete peak at a d-spacing maximum between 8.8 to 11. Angstroms, wherein the peak intensity of the d-spacing maximum between 12.57 to about 14.17 Angstroms is less than 90% of the peak intensity of the d-spacing maximum at 12.33±0.23 Angstroms. This disclosure also relates to methods of making the crystalline MCM-22 family molecular sieve composition.
    Type: Grant
    Filed: July 13, 2007
    Date of Patent: November 30, 2010
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Wieslaw J. Roth, Machteld M. Mertens, Els C. De Clerck, Ivy D. Johnson
  • Patent number: 7795487
    Abstract: Disclosed herein is a process and catalyst for producing a monoalkylated aromatic compound from a polyalkylated aromatic compound, comprising the step of contacting an alkylatable aromatic compound with a polyalkylated aromatic compound under at least partial liquid phase conditions in the presence of a zeolite beta catalyst having a phosphorus content in the range of 0.001 wt. % to 10.0 wt. % of said catalyst, to provide a product which comprises a monoalkylated aromatic compound.
    Type: Grant
    Filed: February 27, 2006
    Date of Patent: September 14, 2010
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Michael C. Clark, Jane C. Cheng, Ajit B. Dandekar
  • Patent number: 7772448
    Abstract: A process is described for producing an alkylaromatic compound in a multistage reaction system comprising at least first and second series-connected alkylation reaction zones each containing an alkylation catalyst. A first feed comprising an alkylatable aromatic compound and a second feed comprising an alkene and one or more alkanes are introduced into said first alkylation reaction zone. The operating conditions, e.g. temperature and pressure, of the first alkylation reaction zone are controlled effective to cause the alkylatable aromatic compound to be partly in the vapor phase and partly in the liquid phase, and the ratio of the volume of liquid to the volume of vapor of the feed in each zone to be from about 0.1 to about 10. The aromatic compound and the alkene of the feed are reacted in the presence of the alkylation catalyst to form an effluent comprising the alkylaromatic compound, unreacted alkylatable aromatic compound, any unreacted alkene and the alkane.
    Type: Grant
    Filed: January 28, 2009
    Date of Patent: August 10, 2010
    Assignees: Badger Licensing LLC, ExxonMobil Chemical Patents Inc.
    Inventors: Michael C. Clark, Brian Maerz
  • Patent number: 7737314
    Abstract: A process for producing an ethylbenzene product having a purity of at least 99.50 percent based on the weight of ethylbenzene present in the product by the ethylation of the benzene present in non-extracted feed, e.g., non-extracted hydrocarbon composition. The non-extracted feed is substantially free of both C4? hydrocarbons and the C7+ aromatic hydrocarbons and contains benzene and benzene coboilers. The process is carried out in the liquid phase, in the presence of an acid-active catalyst containing MCM-22 family molecular sieve, and under specified conditions.
    Type: Grant
    Filed: February 12, 2007
    Date of Patent: June 15, 2010
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Stephen H. Brown, Nick A. Collins
  • Patent number: 7737313
    Abstract: A catalyst composition comprises (a) a MCM-22 family molecular sieve; and (b) a binder, wherein the MCM-22 family molecular sieve is characterized by an average crystal agglomerate size of less than or equal to 16 microns. The catalyst composition may further have a second molecular sieve having a Constraint Index of less than 12, e.g., less than 2. Examples of molecular sieve useful for this disclosure are a MCM-22 family molecular sieve, zeolite Y, and zeolite Beta. The catalyst composition may be used for the process of alkylation or transalkylation of an alkylatable aromatic compound with an alkylating agent.
    Type: Grant
    Filed: December 21, 2006
    Date of Patent: June 15, 2010
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Christine N. Elia, Frederick Y. Lo, Michael C. Clark, C. Morris Smith, Michael Hryniszak, Mohan Kalyanaraman
  • Patent number: 7708976
    Abstract: A novel small pore (metallo)aluminophosphate molecular sieve is disclosed. The as-synthesized material has an X-ray diffraction pattern including the lines listed in Table 1 and is produced in the presence of fluoride ions and 4-dimethylaminopyridine as structure directing agent. The silicoaluminophosphate material has methanol conversion activity and n-hexane cracking activity.
    Type: Grant
    Filed: September 12, 2005
    Date of Patent: May 4, 2010
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Guang Cao, Matu J. Shah
  • Patent number: 7652184
    Abstract: A process for alkylation of an alkylatable aromatic compound to produce a monoalkylated aromatic compound, comprising the steps of: (a) providing at least one reaction zone having a water content with at least one alkylation catalyst having an activity and a selectivity for said monoalkylated benzene, said alkylation catalyst comprising a porous crystalline molecular sieve of a MCM-22 family material, said MCM-22 family material is characterized by having an X-ray diffraction pattern including d-spacing maxima at 12.4±0.25, 3.57±0.07 and 3.42±0.
    Type: Grant
    Filed: August 4, 2008
    Date of Patent: January 26, 2010
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventor: Michael C. Clark
  • Patent number: 7645913
    Abstract: A process is disclosed for producing an alkylaromatic compound in a multistage reaction system comprising at least first and second series-connected alkylation reaction zones, each containing an alkylation catalyst. A first feed comprising an alkylatable aromatic compound and a second feed comprising an alkene are introduced into the first alkylation reaction zone. The first and second alkylation reaction zones are operated under conditions of temperature and pressure effective to cause alkylation of the aromatic compound with the alkene in the presence of the alkylation catalyst, the temperature and pressure being such that the aromatic compound is at least partly in the liquid phase. The alkylation catalyst in the first alkylation reaction zone, which may be a reactor guard bed, has more acid sites per unit volume of catalyst than the alkylation catalyst in the second reaction zone.
    Type: Grant
    Filed: January 19, 2007
    Date of Patent: January 12, 2010
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Michael C. Clark, Vijay Nanda, Chung-Ming Chi, Maruti Bhandarkar, Brian Maerz, Matthew J. Vincent
  • Patent number: 7638668
    Abstract: A process for producing cumene is provided which comprises the step of contacting benzene and propylene under at least partial liquid phase alkylating conditions with a particulate molecular sieve alkylation catalyst, wherein the particles of said alkylation catalyst have a surface to volume ratio of about 80 to less than 200 inch?1.
    Type: Grant
    Filed: October 22, 2007
    Date of Patent: December 29, 2009
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Ajit B. Dandekar, Michael Hryniszak, David Lawrence Stern
  • Patent number: 7371465
    Abstract: An embossable, multilayer, polyolefin film comprising a core layer comprising a polyolefin and an appearance enhancing agent selected from the group consisting of coloring agents, phosphorescence producing agents, reflective agents, and mixtures thereof, wherein the core layer comprises the interior of the film; and an embossable layer exterior to and on one side of the core layer, the embossable layer comprising an olefin polymer, and being particularly suitable for embossing and subsequently receiving a metal layer thereon.
    Type: Grant
    Filed: April 29, 2002
    Date of Patent: May 13, 2008
    Assignee: ExxonMobil Oil Corporation
    Inventors: Salvatore J. Pellingra, Robert A. Migliorini
  • Patent number: 7288304
    Abstract: A metallized thermoplastic label includes a first skin layer containing a thermoplastic and a first cavitating agent, wherein the first skin layer has a first side and a second side, the first skin layer is cavitated, and the first side of the first skin layer is adapted to be used in contact with a cold glue adhesive. The label further includes a cavitated core layer and a second skin layer that is metallized. The particle size of the cavitating agent in the core layer is selected to achieve a desired appearance, especially luster, of the metal layer.
    Type: Grant
    Filed: December 30, 2002
    Date of Patent: October 30, 2007
    Assignee: ExxonMobil Oil Corporation
    Inventor: JoAnn H. Squier
  • Patent number: 7195818
    Abstract: A sealable multi-layer opaque film. In particular, a sealable multi-layer opaque film that is moisture permeable and water resistant. The sealable multi-layer opaque film is an oriented multilayer film with a core layer comprising an orientation-enhancing polymer, a polypropylene homopolymer and a beta crystal nucleator of polypropylene and at least one sealable skin layer.
    Type: Grant
    Filed: May 1, 2002
    Date of Patent: March 27, 2007
    Assignee: ExxonMobil Oil Corporation
    Inventors: Dan-Cheng Kong, Michael D. Cleckner
  • Patent number: 7019185
    Abstract: In a method for producing monoalkylated aromatic compounds, an aromatic feed is contacted with an alkylating agent in the presence of a catalyst comprising a molecular sieve having an X-ray diffraction pattern including d-spacing maxima at 12.4±0.25, 6.9±0.15, 3.57±0.07, and 3.42±0.07 Angstrom. The catalyst also contains at least one metal cation selected from Groups 1–4 and 7–16 of the Periodic Table of Elements, wherein the metal cation is present in an amount of at least 0.5% by weight of the catalyst, whereby selectivity of the catalyst to produce monoalkylates over polyalkylates is improved as compared with the identical catalyst but without the metal cation present.
    Type: Grant
    Filed: December 6, 2002
    Date of Patent: March 28, 2006
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Ajit Bhaskar Dandekar, John P. McWilliams, Thomas Francis Degnan, Jr., Michael Hryniszak
  • Patent number: 6995295
    Abstract: A process is described for producing an alkylaromatic compound by reacting an alkylatable aromatic compound with a feed comprising an alkene and an alkane in a multistage reaction system comprising at least first and second series-connected alkylation reaction zones each containing an alkylation catalyst. At least the first alkylation reaction zone is operated under conditions of temperature and pressure effective to cause alkylation of the aromatic compound with the alkene in the presence of the alkylation catalyst, the temperature and pressure being such that the aromatic compound is partly in the vapor phase and partly in the liquid phase. An effluent comprising the alkylaromatic compound, unreacted alkylatable aromatic compound, any unreacted alkene and the alkane is withdrawn from the first alkylation reaction zone and at least part of the alkane is removed from the effluent to produce an alkane-depleted effluent. The alkane-depleted effluent is then supplied to the second alkylation reaction zone.
    Type: Grant
    Filed: September 23, 2002
    Date of Patent: February 7, 2006
    Assignees: ExxonMobil Chemical Patents Inc., Washington Group International
    Inventors: Michael C. Clark, Ronald Joseph Cimini, Charles M. Smith, Brian Maerz
  • Patent number: 6936744
    Abstract: The present invention provides a process for producing a monoalkylated aromatic compound, particularly cumene, comprising the step of contacting a polyalkylated aromatic compound with an alkylatable aromatic compound under at least partial liquid phase conditions and in the presence of a transalkylation catalyst to produce the monoalkylated aromatic compound, wherein the transalkylation catalyst comprises a mixture of at least two different crystalline molecular sieves, wherein each of said molecular sieves is selected from zeolite beta, zeolite Y, mordenite and a material having an X-ray diffraction pattern including d-spacing maxima at 12.4±0.25, 6.9±0.15, 3.57±0.07 and 3.42±0.07 Angstrom.
    Type: Grant
    Filed: July 19, 2000
    Date of Patent: August 30, 2005
    Assignee: ExxonMobil Chemical Patents, Inc.
    Inventors: Jane Chi Ya Cheng, Michael Alan Steckel, Charles Morris Smith, William Alois Weber, Stephen Harold Brown, Ajit Bhaskar Dandekar, Michael Alan Better