Patents by Inventor G. Paull Torrence

G. Paull Torrence 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).

  • Publication number: 20120203025
    Abstract: A process for the selective production of vinyl ester by the reaction of a carboxylic acid with acetylene with a homogeneous catalyst is disclosed and claimed. In one aspect, esters of neoacids are provided.
    Type: Application
    Filed: April 24, 2012
    Publication date: August 9, 2012
    Inventors: Barbara F.M. Kimmich, Hannah E. Toomey, Qiang Yao, G. Paull Torrence, Jan Cornelis van der Waal, Michael J. Doyle
  • Publication number: 20120202900
    Abstract: In one embodiment, the invention is to an ion exchange resin composition comprising a metal-functionalized exchange resin comprising from 3% to 94% metal-functionalized active sites; and a non-metal-functionalized exchange resin comprising non-metal-functionalized active sites.
    Type: Application
    Filed: December 28, 2011
    Publication date: August 9, 2012
    Applicant: Celanese International Corporation
    Inventors: Greg Blanchard, Ronald D. Shaver, Brian W. Hokkanen, G. Paull Torrence
  • Patent number: 8173830
    Abstract: A process for the selective production of vinyl ester by the reaction of a carboxylic acid with acetylene with a homogeneous catalyst is disclosed and claimed. In a preferred embodiment of this invention, reaction of benzoic acid and acetylene in the presence of Group VIII metal complex catalyst at a temperature of about 50 to 180° C. results in quantitative yields of vinyl benzoate.
    Type: Grant
    Filed: May 7, 2009
    Date of Patent: May 8, 2012
    Assignee: Celanese International Corporation
    Inventors: Barbara F. M. Kimmich, Hannah E. Toomey, Qiang Yao, G. Paull Torrence, Jan Cornelis van der Waal, Michael J. Doyle
  • Publication number: 20120090981
    Abstract: This invention relates to processes for producing acetic acid and, in particular, to improved processes for recovering C2+ alkyl halides and removing permanganate reducing compounds formed during the carbonylation of methanol in the presence of a Group VIII metal carbonylation catalyst to produce acetic acid.
    Type: Application
    Filed: October 13, 2011
    Publication date: April 19, 2012
    Applicant: Celanese International Corporation
    Inventors: G. Paull Torrence, Raymond Zinobile, Oyeyemi Oyerinde
  • Publication number: 20120090980
    Abstract: This invention relates to processes for producing acetic acid and, in particular, to improved processes for recovering C2+ alkyl halides and removing permanganate reducing compounds formed during the carbonylation of methanol in the presence of a Group VIII metal carbonylation catalyst to produce acetic acid.
    Type: Application
    Filed: October 13, 2011
    Publication date: April 19, 2012
    Applicant: CELANESE INTERNATIONAL CORPORATION
    Inventors: G. Paull Torrence, Raymond Zinobile, Oyeyemi Oyerinde
  • Publication number: 20120088929
    Abstract: This invention relates to processes for producing acetic acid from carbon monoxide and, in particular, to improved processes, wherein at least one reactant is fed upstream of a reactor recycle pump and/or to a pump-around loop.
    Type: Application
    Filed: October 12, 2010
    Publication date: April 12, 2012
    Applicant: Celanese International Corporation
    Inventors: G. Paull Torrence, Raymond J. Zinobile
  • Publication number: 20120083623
    Abstract: The present invention is to a process for producing acetic acid comprising the step of reacting a carbon monoxide feed and methanol and/or a methanol derivative in a first reactor to produce a crude acetic acid product. The carbon monoxide may comprise less than 99.5 mol % carbon monoxide. The process further comprises the step of purging a carbon monoxide purge stream comprising a first amount of residual carbon monoxide and one or more impurities. Preferably, the first amount is greater than 20 mol %. The process further comprises the step of separating the crude acetic acid product into at least one derivative stream comprising a second amount of residual carbon monoxide. The process further comprises the step of reacting at least a portion of the second amount of residual carbon monoxide and methanol and/or a methanol derivative in a second reactor to produce additional acetic acid.
    Type: Application
    Filed: September 13, 2011
    Publication date: April 5, 2012
    Applicant: CELANESE INTERNATIONAL CORPORATION
    Inventors: Brian W. Hokkanen, Michael Nutt, Tianshu Pan, Ronald David Shaver, G. Paull Torrence
  • Publication number: 20120078012
    Abstract: A process for producing acetic acid comprising the steps of reacting carbon monoxide and at least one of methanol and a methanol derivative in a first reactor under conditions effective to produce a crude acetic acid product; separating the crude acetic acid product into at least one derivative stream, at least one of the at least one derivative stream comprising residual carbon monoxide; and reacting at least a portion of the residual carbon monoxide with at least one of methanol and a methanol derivative over a metal catalyst in a second reactor to produce additional acetic acid.
    Type: Application
    Filed: September 28, 2010
    Publication date: March 29, 2012
    Applicant: Celanese International Corporation
    Inventors: G. Paull Torrence, Brian W. Hokkanen, Michael O. Nutt, Tianshu Pan, Ronald David Shaver
  • Publication number: 20120036769
    Abstract: Processes for producing alcohols such as ethanol and propanol from a mixed acid feedstock in an integrated process. In one embodiment, the process comprises the step of carbonylating methanol in the presence of a carbonylation catalyst to form a mixed acid feedstock comprising acetic acid and one or more higher acids, preferably comprising propionic acid. The mixed acid feed is hydrogenated in the presence of a hydrogenation catalyst to form a crude alcohol product comprising ethanol and one or more higher alcohols, preferably including propanol.
    Type: Application
    Filed: August 3, 2011
    Publication date: February 16, 2012
    Applicant: CELANESE INTERNATIONAL CORPORATION
    Inventors: Victor JOHNSTON, Lincoln SARAGER, Mark SCATES, Ronald David SHAVER, G. Paull TORRENCE, R. Jay WARNER, Heiko WEINER, Trinity Horton, Radmila JEVTIC, James Zink, David Lee
  • Patent number: 8017802
    Abstract: The present invention relates to carbonylation of methanol, methyl acetate, dimethyl ether or mixtures thereof to produce glacial acetic acid, and more specifically to the manufacture of glacial acetic acid by the reaction of methanol, methyl acetate, dimethyl ether or mixtures thereof with carbon monoxide wherein the product glacial acetic acid contains low impurities.
    Type: Grant
    Filed: May 21, 2007
    Date of Patent: September 13, 2011
    Assignee: Celanese International Corporation
    Inventors: Mark O. Scates, G. Paull Torrence
  • Patent number: 7982065
    Abstract: A process for the selective production of vinyl ester by the reaction of a carboxylic acid with acetylene under heterogeneous catalytic conditions is disclosed and claimed. In a preferred embodiment of this invention, reaction of benzoic acid and acetylene in the presence of supported platinum catalyst at a temperature of from about 100 to 180° C. results in quantitative yields of vinyl benzoate.
    Type: Grant
    Filed: May 7, 2009
    Date of Patent: July 19, 2011
    Assignee: Celanese International Corporation
    Inventors: Barbara F. M. Kimmich, Hannah E. Toomey, Qiang Yao, G. Paull Torrence, Jan Cornelis van der Waal, Bozena A. A. Silberova
  • Publication number: 20100286441
    Abstract: A process for the selective production of vinyl ester by the reaction of a carboxylic acid with acetylene under heterogeneous catalytic conditions is disclosed and claimed. In a preferred embodiment of this invention, reaction of benzoic acid and acetylene in the presence of supported platinum catalyst at a temperature of from about 100 to 180° C. results in quantitative yields of vinyl benzoate.
    Type: Application
    Filed: May 7, 2009
    Publication date: November 11, 2010
    Inventors: Barbara F.M. Kimmich, Hannah E. Toomey, Qiang Yao, G. Paull Torrence, Jan Cornelis van der Waal, Bozena A.A. Silberova
  • Publication number: 20100286440
    Abstract: A process for the selective production of vinyl ester by the reaction of a carboxylic acid with acetylene with a homogeneous catalyst is disclosed and claimed. In a preferred embodiment of this invention, reaction of benzoic acid and acetylene in the presence of Group VIII metal complex catalyst at a temperature of about 50 to 180° C. results in quantitative yields of vinyl benzoate.
    Type: Application
    Filed: May 7, 2009
    Publication date: November 11, 2010
    Applicant: CELANESE INTERNATIONAL CORPORATION
    Inventors: Barbara F.M. Kimmich, Hannah E. Toomey, Qiang Yao, G. Paull Torrence, Jan Cornelis van der Waal, Michael J. Doyle
  • Patent number: 7678939
    Abstract: Processes for the production of acetic acid by carbonylation of methanol, and reactive derivatives thereof, in a reaction mixture using a rhodium-based catalyst system with at least one catalyst stabilizer selected from the group of ruthenium catalyst stabilizers, tin catalyst stabilizers, and mixtures thereof are provided. The catalyst stabilizers minimize precipitation of the rhodium metal during recovery of the acetic acid product, particularly in flasher units in an acetic acid recovery scheme. Stability of the rhodium metal is achieved even when the acetic acid is produced in low water content reaction mixtures in the presence of an iodide salt co-promoter at a concentration that generated an iodide ion concentration of greater than about 3 weight % of the reaction mixture. The stabilizing ruthenium or tin compounds may be present in the reaction mixture for the production of acetic acid at molar concentrations of ruthenium or tin metal to rhodium of about 0.1:1 to about 20:1.
    Type: Grant
    Filed: May 25, 2007
    Date of Patent: March 16, 2010
    Assignee: Celanese International Corporation
    Inventor: G. Paull Torrence
  • Publication number: 20090209786
    Abstract: The present invention relates to carbonylation of methanol, methyl acetate, dimethyl ether or mixtures thereof to produce glacial acetic acid, and more specifically to the manufacture of glacial acetic acid by the reaction of methanol, methyl acetate, dimethyl ether or mixtures thereof with carbon monoxide wherein the product glacial acetic acid contains low impurities.
    Type: Application
    Filed: May 21, 2007
    Publication date: August 20, 2009
    Inventors: Mark O. Scates, G. Paull Torrence
  • Publication number: 20090187043
    Abstract: The present invention relates to carbonylation of methanol, methyl acetate, dimethyl ether or mixtures thereof to produce glacial acetic acid, and more specifically to the manufacture of glacial acetic acid by the reaction of methanol, methyl acetate, dimethyl ether or mixtures thereof with carbon monoxide wherein the product glacial acetic acid contains low impurities.
    Type: Application
    Filed: May 21, 2007
    Publication date: July 23, 2009
    Inventors: Mark O. Scates, G. Paull Torrence
  • Publication number: 20090156859
    Abstract: The present invention relates to carbonylation of methanol, methyl acetate, dimethyl ether or mixtures thereof to produce glacial acetic acid, and more specifically to the manufacture of glacial acetic acid by the reaction of methanol, methyl acetate, dimethyl ether or mixtures thereof with carbon monoxide wherein the product glacial acetic acid contains low impurities.
    Type: Application
    Filed: May 21, 2007
    Publication date: June 18, 2009
    Inventors: Mark O. Scates, G. Paull Torrence
  • Publication number: 20080293967
    Abstract: This invention relates to carbonylation of methanol, methyl acetate, dimethyl ether or mixtures thereof to produce glacial acetic acid, and more specifically to the manufacture of glacial acetic acid by the reaction of methanol, methyl acetate dimethyl ether or mixtures thereof with carbon monoxide wherein the product glacial acetic acid contains low formic acid impurities.
    Type: Application
    Filed: May 21, 2007
    Publication date: November 27, 2008
    Inventors: Mark O. Scates, G. Paull Torrence
  • Publication number: 20080293966
    Abstract: The present invention relates to carbonylation of methanol, methyl acetate, dimethyl ether or mixtures thereof to produce glacial acetic acid, and more specifically to the manufacture of glacial acetic acid by the reaction of methanol, methyl acetate, dimethyl ether or mixtures thereof with carbon monoxide wherein the product glacial acetic acid contains low impurities.
    Type: Application
    Filed: May 21, 2007
    Publication date: November 27, 2008
    Inventors: Mark O. Scates, G. Paull Torrence
  • Patent number: 7053241
    Abstract: Processes for the production of acetic acid by carbonylation of methanol, and reactive derivatives thereof, in a reaction mixture using a rhodium-based catalyst system with at least one metal salt catalyst stabilizer selected from the group of ruthenium salts, tin salts, and mixtures thereof are provided. The metal salt stabilizers minimize precipitation of the rhodium metal during recovery of the acetic acid product, particularly in flasher units in an acetic acid recovery scheme. Stability of the rhodium metal is achieved even when the acetic acid is produced in low water content reaction mixtures in the presence of an iodide salt co-promoter at a concentration that generated an iodide ion concentration of greater than about 3 wt. % of the reaction mixture. The stabilizing metal salts may be present in the reaction mixtures for the production of acetic acid at molar concentrations of metal to rhodium of about 0.1:1 to about 20:1.
    Type: Grant
    Filed: February 24, 2005
    Date of Patent: May 30, 2006
    Assignee: Celanese International Corporation
    Inventor: G. Paull Torrence