Patents Represented by Attorney Michael Kerns
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Patent number: 7396967Abstract: A process is provided for the production of xylenes from reformate. The process is carried out by methylating under conditions effective for the methylation, the benzene/toluene present in the reformate outside the reforming loop, 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: GrantFiled: December 12, 2006Date of Patent: July 8, 2008Assignee: ExxonMobil Chemical Patents Inc.Inventors: Larry L. Iaccino, Jeevan S. Abichandani, John Scott Buchanan, Robert A. Crane, Jihad M. Dakka, Xiaobing Feng, Shifang L. Luo, Gary D. Mohr
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Patent number: 7326818Abstract: In a process for preparing a selectivated catalyst composition useful in the disproportionation of toluene, a catalyst comprising an acidic molecular sieve is contacted with a boron compound at a temperature in excess of 500° C.; and the resultant catalyst is then contacted with a medium containing hydrogen ions to at least partially restore the acid activity of the molecular sieve.Type: GrantFiled: August 15, 2003Date of Patent: February 5, 2008Assignee: ExxonMobil Chemical Patents Inc.Inventors: Jean W. Beeckman, William G. Borghard, Arthur W. Chester, Robert A. Crane, Owen C. Feeley, John C. Fried, Dominick N. Mazzone, Glenn R. Sweeten
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Patent number: 7288184Abstract: Disclosed is a process for removing acids in a system in which aromatic hydrocarbons are separated from a mixture with aliphatic hydrocarbons. The aromatic hydrocarbons are extracted from the mixture using an extracting solvent. The aromatic hydrocarbons are stripped from the extracting solvent with steam and the steam is condensed to form water which is separated from the aromatic hydrocarbons. The separated water is passed through a basic anion exchange column and is then heated to produce the steam.Type: GrantFiled: December 10, 2004Date of Patent: October 30, 2007Assignee: ExxonMobil Chemical Patents Inc.Inventors: Marcus Lambertus Hendricus van Nuland, John Joseph Monson
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Patent number: 7279536Abstract: Process to polymerize olefins comprising contacting, in a polymerization system, olefins having three or more carbon atoms with a catalyst compound, activator, optionally comonomer, and optionally diluent or solvent, at a temperature above the cloud point temperature of the polymerization system and a pressure no lower than 10 MPa below the cloud point pressure of the polymerization system, where the polymerization system comprises any comonomer present, any diluent or solvent present, the polymer product, where the olefins having three or more carbon atoms are present at 40 weigh % or more.Type: GrantFiled: August 25, 2006Date of Patent: October 9, 2007Assignee: ExxonMobil Chemical Patents Inc.Inventors: Patrick Brant, Francis Charles Rix, Gabor Kiss, Robert P. Reynolds
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Patent number: 7276638Abstract: The invention relates to a process for producing alkylated aromatic hydrocarbons, preferably with an oxygen or sulfur containing alkylating agent, in the presence of a multi-component molecular sieve catalyst composition that includes a molecular sieve and an active metal oxide. The invention is also directed to methods of making and formulating the multi-component molecular sieve catalyst composition useful in producing alkylated aromatics.Type: GrantFiled: March 29, 2006Date of Patent: October 2, 2007Assignee: ExxonMobil Chemical Patents Inc.Inventors: Jihad M. Dakka, James C. Vartuli, John S. Buchanan, Jose G. Santiesteban, Doron Levin, Lorenzo C. DeCaul
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Patent number: 7270792Abstract: A process and a system for increasing para-xylene production from a C8 aromatic feedstream by coupling at least one xylene isomerization reactor with at least one pressure swing adsorption unit or temperature swing absorption unit to produce a product having a super-equilibrium para-xylene concentration. This product is then subjected to para-xylene separation and purification.Type: GrantFiled: January 18, 2005Date of Patent: September 18, 2007Assignee: ExxonMobil Chemical Patents Inc.Inventors: Harry W. Deckman, Ronald Richard Chance, James Alexander McHenry, John Di-Yi Ou, Juan José Reinoso
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Patent number: 7271209Abstract: The present invention relates to fibers and nonwovens made from plasticized polyolefin compositions comprising a polyolefin and a non-functionalized hydrocarbon plasticizer.Type: GrantFiled: February 19, 2004Date of Patent: September 18, 2007Assignee: ExxonMobil Chemical Patents Inc.Inventors: Wen Li, Chon-Yie Lin, Bryan R. Chapman, Michael B. Kelly
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Patent number: 7271118Abstract: A catalyst system that exhibits a ratio of ethylene saturation to aromatics ring saturation of greater than 3,500. The catalyst system comprises two components and each component comprises a crystalline molecular sieve having a Constraint Index of from about 1 to about 12 and an effective amount of Group VIII metal. The catalyst system finds particular application in ethylbenzene conversion/xylenes isomerization reactions. The catalyst system can be prepared by incorporating the Group VIII metal into the molecular sieves by competitive ion exchange.Type: GrantFiled: July 29, 2004Date of Patent: September 18, 2007Assignee: ExxonMobil Chemical Patents Inc.Inventors: Brenda A. Raich, Robert A. Crane, Christine N. Elia, Teresa A. Jurgens-Kowal, Gary D. Mohr, David L. Stern
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Patent number: 7265193Abstract: This invention relates to a process to polymerize olefins comprising: contacting: (i) propylene and (ii) a mixture comprising, optionally ethylene, and three or more different alpha olefins having 4 to 20 carbon atoms, wherein at least one alpha olefin is present at Z percent or more, based upon the weight of the mixture, where Z=Y+X, where X=(100 divided by the number of alpha olefins present in the mixture) and Y equals 1 to 75, where Z is not more than 95%, with (iii) a metallocene catalyst system.Type: GrantFiled: January 13, 2004Date of Patent: September 4, 2007Assignee: ExxonMobil Chemical Patents Inc.Inventors: Weiqing Weng, Srivatsan Srinivas, Robert J. Wittenbrink
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Patent number: 7256240Abstract: In a process for producing a polymer blend, at least one first monomer is polymerized in a first slurry phase reaction zone in the presence of a supported first catalyst to produce a thermoplastic first polymer having a crystallinity of at least 30%. At least part of said first polymer is then contacted with at least one second monomer different from said first monomer in a second solution phase reaction zone in the presence of a second catalyst and in the absence of polyenes under conditions to produce a second polymer having a crystallinity of less than 20%.Type: GrantFiled: December 22, 2006Date of Patent: August 14, 2007Assignee: ExxonMobil Chemical Patents Inc.Inventor: Peijun Jiang
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Patent number: 7238747Abstract: The invention is directed to a plasticized polypropylene thermoplastic composition comprising a blend of A) from 50 to 99.9 wt % of a thermoplastic polymer derived from polypropylene, optionally with one or more copolymerizable monomer selected from C2-C10 ?-olefin or diolefin, said polymer having a melt flow rate (MFR) (ASTM D1238) of from 0.5 to 1000 and a crystallinity by differential scanning calorimetry of from 0 to 70%; B) from 0.1 to 50 wt % of at least one ethylene copolymer having a weight-average molecular weight (Mw) (GPC) of from 500 to 10,000, a molecular weight distribution (MWD) (GPC) of from greater than 1.5 to less than or equal to 3.5, and a comonomer content of from greater than or equal to 20 mol % to less than 70 mol %; and optionally, C) from 0 to 20 wt % of a thermoplastic polypropylene modifier compound other than that of B).Type: GrantFiled: April 5, 2005Date of Patent: July 3, 2007Assignee: ExxonMobil Chemical Patents Inc.Inventor: Patrick Brant