Patents by Inventor Charles M. Yarbrough
Charles M. Yarbrough 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).
-
Patent number: 8288595Abstract: Embodiments of the invention disclosed herein relate to a process for the production of a C6-C15 alcohol mixture comprising the steps of: hydroformylating an olefin mixture comprising a branched C5-C14 olefin to form a hydroformylation product comprising aldehydes and formate esters, whereby the hydroformylation product has a net cold sap number from 15 to 38 mg KOH/g, and converting the aldehydes and formate esters to alcohols in a hydrogenation step comprising at least one first hydrogenation reactor comprising a fixed bed of a heterogeneous sulphided bimetallic catalyst.Type: GrantFiled: February 21, 2012Date of Patent: October 16, 2012Assignee: ExxonMobil Chemical Patents Inc.Inventors: Eddy Van Driessche, Jean-Jacques G. Muls, Arie Van Vliet, Carl R. Beck, Charles M. Yarbrough
-
Publication number: 20120149935Abstract: Embodiments of the invention disclosed herein relate to a process for the production of a C6-C15 alcohol mixture comprising the steps of: hydroformylating an olefin mixture comprising a branched C5-C14 olefin to form a hydroformylation product comprising aldehydes and formate esters, whereby the hydroformylation product has a net cold sap number from 15 to 38 mg KOH/g, and converting the aldehydes and formate esters to alcohols in a hydrogenation step comprising at least one first hydrogenation reactor comprising a fixed bed of a heterogeneous sulphided bimetallic catalyst.Type: ApplicationFiled: February 21, 2012Publication date: June 14, 2012Inventors: Eddy Van Driessche, Jean-Jacques G. Muls, Arie Van Vliet, Carl R. Beck, Charles M. Yarbrough
-
Patent number: 8183420Abstract: An alkylaromatic hydrocarbon composition prepared by the process which comprises oligomerizing an olefin selected from the group consisting of propylene, n-butene and mixtures thereof over an oligomerization catalyst, to form a oligomerization product comprising at least 95% by weight of mono-olefin oligomers of the empirical formula: CnH2n wherein n is greater than or equal to 10, the mono-olefin oligomers comprise at least 20% by weight of olefins having at least 12 carbon atoms, and the olefins having at least 12 carbon atoms having an average of from 0.8 to 2.0 C1-C3 alkyl branches per carbon chain. Sulfonation of the alkylaromatic hydrocarbon product produces an alkylaryl sulfonate mixture that exhibits advantageous properties, such as biodegradability and hard and cold water performance.Type: GrantFiled: October 8, 2009Date of Patent: May 22, 2012Assignee: ExxonMobil Chemical Patents Inc.Inventors: Carolyn B. Duncan, David Wayne Turner, Jane C. Cheng, Charles M. Yarbrough, Raphael Frans Caers, Ramzi Y. Saleh, James L. Propp
-
Patent number: 8143459Abstract: Oxo-alcohols in the plasticizer range typically contain small amounts of methyl esters having the same alkyl chain as the alcohol itself. These methyl esters are causing product quality problems and environmental problems because of transesterification in the esterification process where the plasticizer ester derivatives are produced. A process using controlled oxonation and hydrogenation conditions is disclosed for the production of alcohols containing low amounts of methyl esters. Plasticizer esters with low amounts of aliphatic di-alkyl esters are also disclosed.Type: GrantFiled: April 26, 2010Date of Patent: March 27, 2012Assignee: ExxonMobil Chemical Patents Inc.Inventors: Eddy Van Driessche, Jean-Jacques G. Muls, Arie Van Vliet, Carl R. Beck, Charles M. Yarbrough
-
Publication number: 20100312005Abstract: Oxo-alcohols in the plasticiser range typically contain small amounts of methyl esters having the same alkyl chain as the alcohol itself. These methyl esters are causing product quality problems and environmental problems because of transesterification in the esterification process where the plasticiser ester derivatives are produced. A process using controlled oxonation and hydrogenation conditions is disclosed for the production of alcohols containing low amounts of methyl esters. Plasticiser esters with low amounts of aliphatic di-alkyl esters are also disclosed.Type: ApplicationFiled: April 26, 2010Publication date: December 9, 2010Inventors: Eddy Van Driessche, Jean-Jacques G. Muls, Arie Van Vliet, Carl R. Beck, Charles M. Yarbrough
-
Publication number: 20100197978Abstract: The invention relates to the production of isopropyl alcohol (IPA) by direct hydration of propylene over mixed transition metal oxides co-precipitated with ZrO2. In embodiments the mixed metal oxides have improved hydrolytic stability and are active over a wider temperature range than existing direct hydration catalysts.Type: ApplicationFiled: April 10, 2008Publication date: August 5, 2010Inventors: Jihad M. Dakka, Doron Levin, Stephen McCarthy, Travis Allen Reine, Mary Jo Schneider, James C. Vartuli, Charles M. Yarbrough
-
Patent number: 7655826Abstract: 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: GrantFiled: April 12, 2005Date of Patent: February 2, 2010Assignee: ExxonMobil Chemical Patents Inc.Inventors: Charles M. Yarbrough, Vijay Swarup, Patrick Joseph Maher, Albert Y Hu, Michael Walter Bedell
-
Publication number: 20100022802Abstract: An alkylaromatic hydrocarbon composition prepared by the process which comprises oligomerizing an olefin selected from the group consisting of propylene, n-butene and mixtures thereof over an oligomerization catalyst, to form a oligomerization product comprising at least 95% by weight of mono-olefin oligomers of the empirical formula: CnH2n wherein n is greater than or equal to 10, the mono-olefin oligomers comprise at least 20% by weight of olefins having at least 12 carbon atoms, and the olefins having at least 12 carbon atoms having an average of from 0.8 to 2.0 C1-C3 alkyl branches per carbon chain. Sulfonation of the alkylaromatic hydrocarbon product produces an alkylaryl sulfonate mixture that exhibits advantageous properties, such as biodegradability and hard and cold water performance.Type: ApplicationFiled: October 8, 2009Publication date: January 28, 2010Inventors: Carolyn B. Duncan, David Wayne Turner, Jane C. Cheng, Charles M. Yarbrough, Raphael Frans Caers, Ramzi Y. Saleh, James L. Propp
-
Patent number: 7622621Abstract: In a process for preparing an alkylaromatic hydrocarbon composition an olefinic hydrocarbon mixture and an aromatic compound are contacted under alkylation conditions with an aromatic alkylation catalyst selected from a homogeneous acid catalyst and heterogeneous acid 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 Angstroms. The olefinic hydrocarbon mixture comprises at least 5 wt % by weight of mono-olefin oligomers of the empirical formula: CnH2n wherein n is greater than or equal to 10, the mono-olefin oligomers comprising at least 20 percent by weight of olefins having at least 12 carbon atoms, and the olefins having at least 12 carbon atoms having an average of from 0.8 to 2.0 C1-C3 alkyl branches per carbon chain.Type: GrantFiled: March 28, 2003Date of Patent: November 24, 2009Assignee: ExxonMobil Chemical Patents Inc.Inventors: Carolyn B. Duncan, David Wayne Turner, Jane C. Cheng, Charles M. Yarbrough, Raphael Frans Caers, Ramzi Y. Saleh, James L. Propp
-
Patent number: 7425662Abstract: A selectivated molecular sieve, e.g., ZSM-22 or ZSM-23, is used as olefin oligomerization catalyst to provide product, e.g., octenes and dodecenes from butene, having a low degree of branching and hindered double bonds.Type: GrantFiled: March 28, 2003Date of Patent: September 16, 2008Assignee: ExxonMobil Chemical Patents Inc.Inventors: Jon E. Stanat, Georges M. K. Mathys, David Wayne Turner, Jane C. Cheng, Stephen W. Beadle, Cesar M. Cheng Guajardo, Roger Eijkhoudt, Allen D. Godwin, Ernest E. Green, Charles M. Yarbrough, Raphael Frans Caers, Carolyn B. Duncan, Ramzi Y. Saleh
-
Patent number: 7399891Abstract: This invention relates to a process for the production of an alcohol, the process comprising (a) reacting an olefin and water in the presence of a catalyst under conditions sufficient to form a crude alcohol stream comprising alcohol, and a dialkyl ether; (b) separating at least a portion of the crude alcohol stream into an alcohol-containing stream and a dialkyl ether stream; (c) contacting at least a portion of the dialkyl ether stream with an ether decomposition catalyst, the ether decomposition catalyst comprising a mixed metal oxide having the following composition XmYnZpOq where X is at least one metal selected from Group 4 of the Periodic Table of Elements, Y is at least one metal selected from Group 3 (including the Lanthanides and Actinides) and Group 6 of the Periodic Table of Elements and Z is at least one metal selected from Groups 7, 8, and 11 of the Periodic Table of Elements; m, n, p, and q are the atomic ratios of their respective components and, when m is 1, n is from about 0.01 to about 0.Type: GrantFiled: June 8, 2005Date of Patent: July 15, 2008Assignee: ExxonMobil Chemical Patents Inc.Inventors: Charles M Yarbrough, Brian William Roberts, Dennis Jay Davoren, Kenneth Joseph Buturla, Carl Stotz Katzenstein, Doron Levin, Hans Georg Korsten, Vijay Swarup
-
Patent number: 6891052Abstract: A process is disclosed for forming a vinyl ester from a carboxylic acid and acetylene in the presence of a zinc carboxylate catalyst, wherein a mixture of carboxylic acid and zinc carboxylate catalyst is formed and the water content of the mixture is reduced to between about 0.02 wt. % and about 0.3 wt. %, prior to introduction of the acetylene into the reactor. Optionally, water is introduced into the reactor during the reaction to hydrate any anhydride by-product of the reaction present in the reactor to carboxylic acid reactant. Water is added during the reaction in an amount that is sufficient to convert the anhydride by-product to carboxylic acid reactant, but does not raise the amount of water in the reaction mixture to a level that will reduce the reactivity of the catalyst or reduce the rate of the vinylation reaction.Type: GrantFiled: October 31, 1997Date of Patent: May 10, 2005Assignee: ExxonMobil Chemical Patents Inc.Inventors: Ky I. Tanner, Charles M. Yarbrough
-
Patent number: 6733637Abstract: A process for producing high purity isopropyl alcohol. In one embodiment, the process includes the steps of: (a) feeding a feed stream comprising at least about 99.9 wt. % isopropyl alcohol into a separation column; (b) separating the isopropyl alcohol into an overhead stream taken overhead from the separation column and a bottoms stream taken as bottoms from the separation column; and (c) removing the high purity isopropyl alcohol at a point: (i) below where the feed stream enters the separation column but above the bottoms stream, or (ii) above where the feed stream enters the separation column but below the overhead stream. The high purity isopropyl alcohol has a metals content of less than about 1 ppb and a water content of less than about 100 ppm.Type: GrantFiled: June 2, 2000Date of Patent: May 11, 2004Assignee: ExxonMobil Chemical Patents Inc.Inventors: Paul E. Burton, Dennis J. Davoren, Timothy P. Dean, John P. Motlow, Charles M. Yarbrough