Patents Represented by Attorney D. M. Tyus
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Patent number: 8017540Abstract: 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: GrantFiled: October 1, 2010Date of Patent: September 13, 2011Assignee: ExxonMobil Chemical Patents Inc.Inventors: Wenyih Frank Lai, Robert Ellis Kay
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Patent number: 7842277Abstract: 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: GrantFiled: July 13, 2007Date of Patent: November 30, 2010Assignee: ExxonMobil Chemical Patents Inc.Inventors: Wieslaw J. Roth, Machteld M. Mertens, Els C. De Clerck, Ivy D. Johnson
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Patent number: 7795487Abstract: 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: GrantFiled: February 27, 2006Date of Patent: September 14, 2010Assignee: ExxonMobil Chemical Patents Inc.Inventors: Michael C. Clark, Jane C. Cheng, Ajit B. Dandekar
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Patent number: 7772448Abstract: 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: GrantFiled: January 28, 2009Date of Patent: August 10, 2010Assignees: Badger Licensing LLC, ExxonMobil Chemical Patents Inc.Inventors: Michael C. Clark, Brian Maerz
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Patent number: 7737314Abstract: 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: GrantFiled: February 12, 2007Date of Patent: June 15, 2010Assignee: ExxonMobil Chemical Patents Inc.Inventors: Stephen H. Brown, Nick A. Collins
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Patent number: 7737313Abstract: 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: GrantFiled: December 21, 2006Date of Patent: June 15, 2010Assignee: ExxonMobil Chemical Patents Inc.Inventors: Christine N. Elia, Frederick Y. Lo, Michael C. Clark, C. Morris Smith, Michael Hryniszak, Mohan Kalyanaraman
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Patent number: 7708976Abstract: 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: GrantFiled: September 12, 2005Date of Patent: May 4, 2010Assignee: ExxonMobil Chemical Patents Inc.Inventors: Guang Cao, Matu J. Shah
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Patent number: 7652184Abstract: 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: GrantFiled: August 4, 2008Date of Patent: January 26, 2010Assignee: ExxonMobil Chemical Patents Inc.Inventor: Michael C. Clark
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Patent number: 7645913Abstract: 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: GrantFiled: January 19, 2007Date of Patent: January 12, 2010Assignee: ExxonMobil Chemical Patents Inc.Inventors: Michael C. Clark, Vijay Nanda, Chung-Ming Chi, Maruti Bhandarkar, Brian Maerz, Matthew J. Vincent
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Patent number: 7638668Abstract: 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: GrantFiled: October 22, 2007Date of Patent: December 29, 2009Assignee: ExxonMobil Chemical Patents Inc.Inventors: Ajit B. Dandekar, Michael Hryniszak, David Lawrence Stern
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Patent number: 7371465Abstract: 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: GrantFiled: April 29, 2002Date of Patent: May 13, 2008Assignee: ExxonMobil Oil CorporationInventors: Salvatore J. Pellingra, Robert A. Migliorini
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Patent number: 7288304Abstract: 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: GrantFiled: December 30, 2002Date of Patent: October 30, 2007Assignee: ExxonMobil Oil CorporationInventor: JoAnn H. Squier
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Patent number: 7195818Abstract: 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: GrantFiled: May 1, 2002Date of Patent: March 27, 2007Assignee: ExxonMobil Oil CorporationInventors: Dan-Cheng Kong, Michael D. Cleckner
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Patent number: 7019185Abstract: 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: GrantFiled: December 6, 2002Date of Patent: March 28, 2006Assignee: ExxonMobil Chemical Patents Inc.Inventors: Ajit Bhaskar Dandekar, John P. McWilliams, Thomas Francis Degnan, Jr., Michael Hryniszak
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Patent number: 6995295Abstract: 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: GrantFiled: September 23, 2002Date of Patent: February 7, 2006Assignees: ExxonMobil Chemical Patents Inc., Washington Group InternationalInventors: Michael C. Clark, Ronald Joseph Cimini, Charles M. Smith, Brian Maerz
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Patent number: 6936744Abstract: 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: GrantFiled: July 19, 2000Date of Patent: August 30, 2005Assignee: 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