Patents Represented by Attorney Andrew B. Griffis
  • Patent number: 7744750
    Abstract: This invention relates to a process for reducing the Bromine Index of a hydrocarbon feedstock having less than 5 wppm oxygenates-oxygen, comprising the step of contacting the feedstock with a catalyst at conversion conditions to form a first effluent, wherein the catalyst includes a molecular sieve having a zeolite structure type of MWW.
    Type: Grant
    Filed: November 17, 2005
    Date of Patent: June 29, 2010
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Stephen H. Brown, James R. Waldecker, Khavinet Lourvanij
  • Patent number: 7737315
    Abstract: The invention relates to the use of isobutene-containing olefin feedstock in oligomerization reactions, particularly in the production of octenes as feedstock for the manufacture of plasticizer alcohols, the process comprising contacting a feed comprising isobutene with a molecular sieve at a temperature in excess of 240° C. to produce a product low in triple-branched octenes.
    Type: Grant
    Filed: January 28, 2009
    Date of Patent: June 15, 2010
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Stephen Harold Brown, Georges Marie Mathys
  • Patent number: 7732634
    Abstract: The present invention is directed to a process for hydrogenating one or more organic compounds especially unsaturated organic compounds by bringing the compound into contact with a hydrogen-containing gas in the presence of a catalyst, which comprises one or more catalytically active metals applied to a porous catalyst support. The one or more catalytically active metals having been derived via a decomposed organic complex of the metal on the support, in particular amine complexes of the metal. The decomposed complex may be treated with hydrogen to activate the catalyst before use as a hydrogenation catalyst.
    Type: Grant
    Filed: November 18, 2003
    Date of Patent: June 8, 2010
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Stuart Leon Soled, Andrzej Malek, James Clarke Vartuli, Jennifer Schaefer Feeley, Sabato Miseo, Shifang Luo, Richard Henry Schlosberg, Joseph Ernest Baumgartner, Christine E. Kliewer, Steven T. Ragomo
  • Patent number: 7731839
    Abstract: A process for reducing the Bromine Index of a hydrocarbon feedstock, the process comprising the step of contacting the hydrocarbon feedstock with a catalyst at conversion conditions, wherein the catalyst includes at least one molecular sieve and at least one clay, and wherein said catalyst is sufficient to reduce more than 50% of the Bromine Index of a hydrocarbon feedstock.
    Type: Grant
    Filed: May 27, 2005
    Date of Patent: June 8, 2010
    Assignee: Exxonmobil Chemical Patents Inc.
    Inventors: Stephen Harold Brown, Gary David Mohr, Michael Christopher Clark, Selma Lawrence
  • Patent number: 7728186
    Abstract: In a process for converting methane to aromatic hydrocarbons, a feed containing methane is contacted with a dehydrocyclization catalyst in a reaction zone under conditions including a first maximum temperature effective to convert the methane to aromatic hydrocarbons and generate coke on the catalyst. A portion of the coked catalyst is transferred from the reaction zone to a separate regeneration zone, where the catalyst portion is contacted with a regeneration gas under conditions including a second maximum temperature less than or equal to the first maximum temperature and effective to at least partially remove coke from the catalyst portion. Before being returned to the reaction zone, the regenerated catalyst portion is contacted with a carburizing gas in a catalyst treatment zone separate from the reaction zone at a third maximum temperature less than the first maximum temperature.
    Type: Grant
    Filed: April 5, 2007
    Date of Patent: June 1, 2010
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Larry L. Iaccino, Neeraj Sangar, Elizabeth L. Stavens
  • Patent number: 7700814
    Abstract: Acetals are formed from a mixture comprising alcohols and aldehydes and the product is distilled to yield purified alcohols and/or acetals and/or unsaturated ethers.
    Type: Grant
    Filed: March 27, 2007
    Date of Patent: April 20, 2010
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Ronald D. Garton, Corey W. Reed, Krishna K. Rao, Bruce D. Lilly
  • Patent number: 7683227
    Abstract: In a process for converting methane to higher hydrocarbons including aromatic hydrocarbons, a feed containing methane is contacted with a dehydrocyclization catalyst in a reaction zone under conditions effective to convert said methane to aromatic hydrocarbons. A first portion of the catalyst is transferred from the reaction zone to a heating zone, where the first catalyst portion is heated by contacting the catalyst with hot combustion gases generated by burning a supplemental source of fuel. The heated first catalyst portion is then returned to the reaction zone.
    Type: Grant
    Filed: April 21, 2006
    Date of Patent: March 23, 2010
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Larry L. Iaccino, Neeraj Sangar, Elizabeth L. Stavens
  • Patent number: 7667080
    Abstract: Mixtures of C8-10 primary alcohols, preferably C9 alcohol rich, comprise from 15 to 70 wt. % unbranched molecules, the balance being branched molecules having an average branchiness of at most 2.00 branches per molecule, at least 80% of the ranches being methyl branches and at least 50% of the branched molecules being mono-methyl branched. Plasticiser esters and surfactant derivatives derived from these alcohol mixtures are also provided. The alcohol mixtures are preferably produced by hydroformylation of octene rich streams formed by Fischer-Tropsch synthesis.
    Type: Grant
    Filed: July 14, 2005
    Date of Patent: February 23, 2010
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Raphael Frans Caers, Allen David Godwin, Mauritz Marie Kelchtermans, Jean-Jacques G. Muls
  • Patent number: 7666366
    Abstract: The invention relates to improvements in internal loop reactors. The reactor of the invention is characterized by a plurality of cooling tubes which form the annulus between the riser and the downcomer path of said internal loop reactor. The reactor also provides improvements in hydroformylation reactions using the improved reactor.
    Type: Grant
    Filed: July 10, 2006
    Date of Patent: February 23, 2010
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Ronald Dean Garton, Matthew Findlay, Krishnan Sankaranarayanan, Arie Van Vliet
  • Patent number: 7663010
    Abstract: This disclosure relates to a catalyst system adapted for transalkylation a C9+ aromatic feedstock with a C6-C7 aromatic feedstock, comprising: (a) a first catalyst comprising a first molecular sieve having a Constraint Index in the range of 3-12 and 0.01 to 5 wt. % of at least one source of a first metal element of Groups 6-10; and (b) a second catalyst comprising a second molecular sieve having a Constraint Index less than 3 and 0 to 5 wt. % of at least one source of a second metal element of Groups 6-10, wherein the weight ratio of the first catalyst over the second catalyst is in the range of 5:95 to 75:25 and wherein the first catalyst is located in front of the second catalyst when they are brought into contacting with the C9+ aromatic feedstock and the C6-C7 aromatic feedstock in the present of hydrogen.
    Type: Grant
    Filed: October 10, 2008
    Date of Patent: February 16, 2010
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventor: Doron Levin
  • Patent number: 7659437
    Abstract: A process for converting methane to higher hydrocarbon(s) including aromatic hydrocarbon(s) comprises providing a hydrocarbon feedstock containing methane and a catalytic particulate material to a reactor system having at least first and second reaction zones connected in series. Each of the reaction zones is operated under reaction conditions sufficient to convert at least a portion of the methane to said higher hydrocarbon(s) and is maintained in a moving bed fashion, with the bulk of the catalytic particulate material being moved from the first reaction zone to the second reaction zone and with the bulk of the hydrocarbon feedstock being moved from the second reaction zone to the first reaction zone.
    Type: Grant
    Filed: March 29, 2007
    Date of Patent: February 9, 2010
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Larry L. Iaccino, Elizabeth L. Stavens, Neeraj Sangar
  • Patent number: 7655823
    Abstract: A process is provided for the production of xylenes from reformate. The process is carried out by methylating the benzene, toluene, or both present in the reformate to produce a resulting product having a higher xylenes content than the reformate. Greater than equilibrium amounts of para-xylene can be produced by the process.
    Type: Grant
    Filed: February 27, 2006
    Date of Patent: February 2, 2010
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Gary D. Mohr, John Scott Buchanan, Robert A. Crane, Jihad M. Dakka, Xiaobing Feng, Larry L. Iaccino, Shifang L. Luo
  • Patent number: 7655826
    Abstract: This invention relates to a method of making an olefin from a dialkyl ether comprising (a) introducing an ether having a formula CxH2x+1CyH2y+1 into a thermal or catalytic cracking unit processing a hydrocarbon feedstock; and (b) decomposing at least a portion of the ether to form an olefin having a formula CxH2x and/or CyH2y and an alcohol having a formula CxH2x+1 and/or CyH2y+1OH, wherein x and y independently range from about 1 to about 30. This invention also relates to a method of reducing coking in a thermal or catalytic cracking unit comprising (a) introducing an ether, having a formula CxH2x+1OCyH2y+1, into the cracking unit processing a hydrocarbon feedstock in an amount effective to reduce coke formation relative to processing the hydrocarbon feedstock in the absence of the ether, wherein x and y independently range from about 1 to about 30.
    Type: Grant
    Filed: April 12, 2005
    Date of Patent: February 2, 2010
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Charles M. Yarbrough, Vijay Swarup, Patrick Joseph Maher, Albert Y Hu, Michael Walter Bedell
  • Patent number: 7648948
    Abstract: The invention relates to compositions suitable as additive packages for lubricants and other functional fluids, the composition comprising sulfur-containing extreme pressure components, phosphorus-containing anti-wear additives, a triazole-containing species. A preferred use is in industrial gear oils. In embodiments, enhance protection in the areas of bearing wear and micropitting are obtained.
    Type: Grant
    Filed: April 8, 2005
    Date of Patent: January 19, 2010
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Shi-Ming Wu, William T. Sullivan, Ellen Bernice Brandes
  • Patent number: 7638673
    Abstract: This invention relates to a process for converting a hydrocarbon feedstock, comprising the steps of (A) feeding the feedstock to a reactor or adsorption unit; (B) contacting the feedstock in the reactor or adsorption unit with a solid particulate material useful for converting the feedstock under conversion conditions; (C) withdrawing converted feedstock from the reactor; and (D) removing, under the conversion conditions for a fractional time of step (B), at least a portion of the solid particulate material while the feedstock is being fed to the reactor or adsorption unit, wherein the portion is more than 0.1 wt. % of the solid particulate material in the reactor or adsorption unit and wherein the fractional time is less than 95% of the time of step (B).
    Type: Grant
    Filed: May 4, 2005
    Date of Patent: December 29, 2009
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Dana Lynn Pilliod, Katy Conley Randall, Eric Martin Harding
  • Patent number: 7629303
    Abstract: A basestock that comprises a fully hydrogenated substituted styrene linear dimer; a partially hydrogenated mono-aromatic substituted styrene linear dimer; and a partially hydrogenated di-aromatic substituted styrene linear dimer. A process of producing a basestock that comprises reacting a feed stream that comprises substituted styrene, alcohol, and a dimerization catalyst, in the presence of a solvent, to form a crude slurry of dimerized substituted styrene; and partially hydrogenating the dimerized substituted styrene with hydrogen over a Group VIII catalyst to form a basestock that comprises a fully hydrogenated substituted styrene linear dimer and a partially hydrogenated substituted styrene linear dimer.
    Type: Grant
    Filed: August 17, 2005
    Date of Patent: December 8, 2009
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Mark Paul Hagemeister, Thomas R. Forbus, Jr.
  • Patent number: 7629413
    Abstract: C9 to C11 alkyl benzoates are used as plasticisers for polyvinyl chloride in particular in combination with plasticisers such as di-2-ethyl hexyl phthalate, diisononyl phthalate, di-2-propyl heptyl phthalate, diisodecyl phthalate or di-2-ethyl hexyl terephthalate. The use of the C9 to C11 alkyl benzoates provides low viscosity low volatility plasticisers, which are fast fusing with lower hot bench gelation temperature and which can be used to reduce the staining problems associated with use of di-2-ethyl hexyl phthalate and diisononyl phthalate. The low viscosity of the C9 to C11 alkyl benzoates allows the formulation of solvent free flexible PVC formulations meeting stringent VOC limitations.
    Type: Grant
    Filed: January 18, 2006
    Date of Patent: December 8, 2009
    Assignee: Exxonmobil Chemical Patents Inc.
    Inventors: Allen David Godwin, Didier Naert
  • Patent number: 7626065
    Abstract: A process for producing a PX-rich product comprises (a) separating a feedstock containing C8 hydrocarbons to produce a C8 hydrocarbons rich stream; (b) separating at least a first portion of the C8 hydrocarbons rich stream to produce a first PX-rich stream and a first PX-depleted stream; (c) isomerizing at least a portion of the first PX-depleted stream to produce a first isomerized stream having a higher PX concentration than the first PX-depleted stream; (d) separating a second portion of the C8 hydrocarbons rich stream and/or at least a portion of the first isomerized stream to produce a second PX-rich stream and a second PX-depleted stream; (e) isomerizing at least a portion of the second PX-depleted stream to produce a second isomerized stream having a higher PX concentration than the second PX-depleted stream; (f) recovering at least a portion of at least one of the first and second PX-rich streams as PX-rich product; and (g) supplying at least a portion of at least one of the first isomerized stream, t
    Type: Grant
    Filed: August 22, 2008
    Date of Patent: December 1, 2009
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: John Di-Yi Ou, Harold W. Helmke, Jr., John R. Porter
  • Patent number: 7595420
    Abstract: A process for hydrogenating benzenepolycarboxylic acids or derivatives thereof, such as esters and/or anhydrides, by bringing one or more benzenepolycarboxylic acids or one or more derivatives thereof into contact with a hydrogen-containing gas in the presence of one or more catalytically active metal, such as platinum, palladium, ruthenium or mixtures thereof, deposited on a catalyst support comprising one or more ordered mesoporous materials.
    Type: Grant
    Filed: November 18, 2003
    Date of Patent: September 29, 2009
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Richard Henry Schlosberg, Jose Guadalupe Santiesteban, Stuart L. Soled, Andrzej Mariusz Malek, Joseph E. Baumgartner, Luo Shifang, Sabato Miseo, James Clarke Vartuli
  • Patent number: 7592497
    Abstract: The invention relates to a method of making a PAO from mixtures comprising 1-decene and 1-dodecene, characterized by a low viscosity and excellent cold temperature properties, using a promoter system comprising an alcohol. In embodiments, the product has properties similar to those obtainable using a feed of solely 1-decene.
    Type: Grant
    Filed: March 24, 2006
    Date of Patent: September 22, 2009
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Norman Yang, Pramod Jayant Nandapurkar