Patents by Inventor George Marie Karel Mathys
George Marie Karel Mathys has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9168518Abstract: Deactivation of a zeolite catalyst during its use to catalyse the oligomerisation of olefins, is often believed to be a result of the formation of high boiling polymers as by-products. These by-products can remain on the catalyst and undergo further conversion to higher molecular weight polymers, which resemble heavy tars and in some cases even have the appearance of coke-like material. These materials can coat the catalyst particles and plug pores in the catalyst, thereby causing catalyst deactivation. The invention relates to an improved method for regenerating such a catalyst.Type: GrantFiled: April 28, 2010Date of Patent: October 27, 2015Assignee: ExxonMobil Chemical Patents Inc.Inventors: John Stephen Godsmark, Georges Marie Karel Mathys, Hans Karel Theresia Goris, Roger Eijkhoudt, Stephen Harold Brown
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Patent number: 9169169Abstract: A process for the oligomerization of olefins includes treating, e.g., water washing, an olefin-containing hydrocarbon stream to lower the concentration of an organic nitrogen-containing Lewis base contained therein until the treated hydrocarbon stream is substantially free of the Lewis base; and subsequently contacting the treated hydrocarbon stream with a molecular sieve catalyst to produce a product including at least one oligomer.Type: GrantFiled: June 24, 2011Date of Patent: October 27, 2015Assignee: ExxonMobil Chemical Patents Inc.Inventors: John Stephen Godsmark, George Marie Karel Mathys, Hubertus Joseph Beckers, Charles Morris Yarbrough, Stephen Harold Brown, Yeo-Meng Lim
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Patent number: 8716542Abstract: In a process for oligomerizing an olefinic hydrocarbon feedstock comprising at least 65 wt % olefins and/or sulfur-containing molecules, the feedstock is contacted under oligomerization conditions with (a) a first unidimensional 10-ring molecular sieve catalyst and (b) a second multidimensional crystalline molecular sieve catalyst. The first and second catalysts may be contained in separate reactors or as separate beds in a single reactor.Type: GrantFiled: September 2, 2010Date of Patent: May 6, 2014Assignee: ExxonMobil Chemical Patents Inc.Inventors: Stephen Harold Brown, John Stephen Godsmark, Georges Marie Karel Mathys
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Publication number: 20130204060Abstract: Deactivation of a zeolite catalyst during its use to catalyse the oligomerisation of olefins, is often believed to be a result of the formation of high boiling polymers as by-products. These by-products can remain on the catalyst and undergo further conversion to higher molecular weight polymers, which resemble heavy tars and in some cases even have the appearance of coke-like material. These materials can coat the catalyst particles and plug pores in the catalyst, thereby causing catalyst deactivation. The invention relates to an improved method for regenerating such a catalyst.Type: ApplicationFiled: April 28, 2010Publication date: August 8, 2013Applicant: ExxonMobil Chemical Patents Inc.Inventors: John Stephen Godsmark, Georges Marie Karel Mathys, Hans Karel Theresia Goris, Roger Eijkhoudt, Stephen Harold Brown
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Patent number: 8115042Abstract: In the oligomerization of olefins in a tubular reactor employing a molecular sieve catalyst, the temperature of the reaction is monitored and the space velocity of the olefin feed to the reactor is reduced as the temperature increases. This has been found to increase catalyst life and lead to extended production runs. Further extensions of the production run are achieved by improving reactor operating stability as the end of the production run approaches.Type: GrantFiled: June 5, 2009Date of Patent: February 14, 2012Assignee: ExxonMobil Chemical Patents Inc.Inventors: John Stephen Godsmark, Georges Marie Karel Mathys, Paul Hamilton, Stephen Harold Brown, Yeo-Meng Lim
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Publication number: 20110282092Abstract: Nitrogen-containing Lewis bases act as poisons for molecular sieve catalysts used in oligomerisation reactions. Lowering their presence in the feed prior to the contacting thereof with the molecular sieve brings a significant extension of catalyst life. Thus, processes that are directed to the lowering of these poisons are provided.Type: ApplicationFiled: June 24, 2011Publication date: November 17, 2011Inventors: John Stephen Godsmark, George Marie Karel Mathys, Hubertus Joseph Beckers, Charles Morris Yarbrough, Stephen Harold Brown, Yeo-Meng Lim
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Patent number: 7989668Abstract: Nitrogen-containing Lewis bases act as poisons for molecular sieve catalysts used in oligomerisation reactions. A lowering of their presence in the feed prior to the contacting thereof with the molecular sieve brings a significant extension of catalyst life. Excessive elimination of these poisons may be disadvantageous. Lowering the levels of these catalyst poisons to more manageable concentrations is therefore preferred.Type: GrantFiled: February 1, 2007Date of Patent: August 2, 2011Assignee: Exxonmobil Chemical Patents Inc.Inventors: John Stephen Godsmark, Georges Marie Karel Mathys, Hubertus Joseph Beckers, Charles Morris Yarbrough, Stephen Harold Brown, Yeo-Meng Lim
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Publication number: 20110124827Abstract: In the oligomerisation of olefins in a tubular reactor employing a molecular sieve catalyst, the temperature of the reaction is monitored and the space velocity of the olefin feed to the reactor is reduced as the temperature increases. This has been found to increase catalyst life and lead to extended production runs. Further extensions of the production run are achieved by improving reactor operating stability as the end of the production run approaches.Type: ApplicationFiled: June 5, 2009Publication date: May 26, 2011Inventors: John Stephen Godsmark, Georges Marie Karel Mathys, Paul Hamilton, Stephen Harold Brown, Yeo-Meng Lim
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Publication number: 20100331591Abstract: In a process for oligomerizing an olefinic hydrocarbon feedstock comprising at least 65 wt % olefins and/or sulfur-containing molecules, the feedstock is contacted under oligomerization conditions with (a) a first unidimensional 10-ring molecular sieve catalyst and (b) a second multidimensional crystalline molecular sieve catalyst. The first and second catalysts may be contained in separate reactors or as separate beds in a single reactor.Type: ApplicationFiled: September 2, 2010Publication date: December 30, 2010Inventors: Stephen Harold Brown, John Stephen Godsmark, Georges Marie Karel Mathys
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Patent number: 7834229Abstract: In a process for oligomerizing an olefinic hydrocarbon feedstock comprising at least 65 wt % olefins and/or sulfur-containing molecules, the feedstock is contacted under oligomerization conditions with (a) a first unidimensional 10-ring molecular sieve catalyst and (b) a second multidimensional crystalline molecular sieve catalyst. The first and second catalysts may be contained in separate reactors or as separate beds in a single reactor.Type: GrantFiled: May 26, 2005Date of Patent: November 16, 2010Assignee: ExxonMobil Chemical Patents Inc.Inventors: Stephen Harold Brown, John Stephen Godsmark, Georges Marie Karel Mathys
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Patent number: 7572947Abstract: The invention is directed to a method of selectively oligomerizing olefin monomers by controlling feedstock composition and reaction conditions. Reaction conditions are chosen to include at least one of: (a) dimer recycle; (b) staged injection of monomer; and (c) utilization of a two catalyst system.Type: GrantFiled: August 7, 2006Date of Patent: August 11, 2009Assignee: ExxonMobil Chemical Patents Inc.Inventors: Stephen Harold Brown, Georges Marie Karel Mathys, Paul Hamilton
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Publication number: 20070213575Abstract: Nitrogen-containing Lewis bases act as poisons for molecular sieve catalysts used in oligomerisation reactions. A lowering of their presence in the feed prior to the contacting thereof with the molecular sieve brings a significant extension of catalyst life. Excessive elimination of these poisons may be disadvantageous. Lowering the levels of these catalyst poisons to more manageable concentrations is therefore preferred.Type: ApplicationFiled: February 1, 2007Publication date: September 13, 2007Inventors: John Stephen Godsmark, Georges Marie Karel Mathys, Hubertus Joseph Beckers, Charles Morris Yarbrough, Stephen Harold Brown, Yeo-Meng Lim
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Patent number: 7112711Abstract: A process for oligomerising alkenes having from 3 to 6 carbon atoms which comprises contacting a feedstock comprising a) one or several alkenes having x carbon atoms, and, b) optionally, one or several alkenes having y carbon atoms, x and y being different, with a catalyst containing a zeolite of the MFS structure type, under conditions to obtain selectively oligomeric product containing predominant amounts of certain oligomers. The process is carried out at a temperature comprised between 125 and 175° C. when the feedstock contains only alkenes with 3 carbon atoms and between 140 and 240° C., preferably between 140 and 200° C. when the feedstock contains comprises at least one alkene with 4 or more carbon atoms.Type: GrantFiled: April 20, 2001Date of Patent: September 26, 2006Assignee: ExxonMobil Chemical Patents Inc.Inventors: Georges Marie Karel Mathys, Jihad Mohammed Dakka, Machteld Maria Mertens, Johan A. Martens, Igor V. Mishin, Raman Ravishankar, Roger Eijkhoudt
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Publication number: 20040006250Abstract: A process for oligomerising alkenes having from 3 to 6 carbon atoms which comprises contacting a feedstock comprising a) one or several alkenes having x carbon atoms, and, b) optionally, one or several alkenes having y carbon atoms, x and y being different, with a catalyst containing a zeolite of the MFS structure type, under conditions to obtain selectively oligomeric product containing predominant amounts of certain oligomers. The process is carried out at a temperature comprised between 125 and 175° C. when the feedstock contains only alkenes with 3 carbon atoms and between 140 and 240° C., preferably between 140 and 200° C. when the feedstock contains comprises at least one alkene with 4 or more carbon atoms.Type: ApplicationFiled: April 14, 2003Publication date: January 8, 2004Inventors: Georges Marie Karel Mathys, Jihad Mohammed Dakka, Machteld Maria Mertens, Johan A Martens, Igor V Mishin, Raman Ravishankar, Roger Eijkhoudt
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Patent number: 6191308Abstract: &agr;-Hydroxycarbonyl compounds are obtained from aldehydes or ketones by forming an acetal or ketal which is decomposed to a vinyl ether. The ether is selectively oxidized under conditions yielding an &agr;-hydroxy-aldehyde or &agr;-hydroxy-ketone with the carbonyl group protected. The last-mentioned compounds are valuable sources for other functional organic molecules, for example lactic acid.Type: GrantFiled: August 17, 1999Date of Patent: February 20, 2001Assignee: Exxon Chemical Patents Inc.Inventors: Jihad Mohammed Dakka, Georges Marie Karel Mathys, Hans Karel Theresia Goris
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Patent number: 6107525Abstract: A propene ether is selectively oxidized to an aldehyde-masked 2-hydroxypropanal using a metal-containing oxidation catalyst.Type: GrantFiled: October 26, 1998Date of Patent: August 22, 2000Assignee: Exxon Chemical Patents Inc.Inventors: Jihad Mohammed Dakka, Georges Marie Karel Mathys, Hans Karel Theresia Goris
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Patent number: 5874661Abstract: The average degree of branching of a branched olefin feedstock is reduced by skeletal isomerization in contact with a molecular sieve.Type: GrantFiled: May 3, 1996Date of Patent: February 23, 1999Assignee: Exxon Chemical Patents Inc.Inventors: Wim Herman Verrelst, Luc Roger Marc Martens, Georges Marie Karel Mathys
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Patent number: 5739076Abstract: New titanium zeolite Beta catalysts which have been found to be useful as catalysts for the oxidation of organic compounds using organic hydroperoxides as oxidation catalysts. They are particularly useful as ring opening oxidation catalysts and may be used to produce adipic acid from cyclohexane.Type: GrantFiled: April 19, 1995Date of Patent: April 14, 1998Assignee: Exxon Chemical Patents Inc.Inventors: Diane Renata Cornelia Huybrechts, Philip Luc Buskens, Georges Marie Karel Mathys, Luc Roger Marc Martens
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Patent number: 5698747Abstract: Ethers, for example those produced by acid-catalyzed dehydration of alcohols, are freed from esters by treatment with an alkoxide, and are especially suitable as drilling fluid components.Type: GrantFiled: April 12, 1994Date of Patent: December 16, 1997Assignee: Exxon Chemical Patents Inc.Inventors: Allen David Godwin, Georges Marie Karel Mathys
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Patent number: 5683673Abstract: In the manufacture of Beta zeolite, good yields result from a high ethene pressure, advantageously accompanied by synthesis gel ageing and low aluminium content.Type: GrantFiled: May 3, 1996Date of Patent: November 4, 1997Assignee: Exxon Chemical Patents Inc.Inventors: Philip Luc Buskens, Luc Roger Marc Martens, Georges Marie Karel Mathys