Patents by Inventor Kenneth A. Burdett

Kenneth A. Burdett 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: 8324434
    Abstract: The present invention provides an improved hydrogenation processes wherein heat is efficiently managed so that catalyst productivity is optimized. More particularly, in the processes of the present invention, a nonaqueous solvent is added to a reactant to provide a nonaqueous solvent/reactant mixture that can act as a heat sink and absorb at least a portion of the heat generated within the reactor. Desirably, a reaction product, or a solvent with a minimal number of hydroxyl groups, is utilized so that the formation of unwanted byproducts can be minimized.
    Type: Grant
    Filed: February 28, 2009
    Date of Patent: December 4, 2012
    Assignee: Dow Global Technologies, LLC
    Inventors: David C. Molzahn, Kenneth A. Burdett, William L. Gibson, Karel J. Kriel, James E. McCreight, Indresh Mathur
  • Publication number: 20110060168
    Abstract: The present invention provides an improved hydrogenation processes wherein heat is efficiently managed so that catalyst productivity is optimized. More particularly, in the processes of the present invention, a nonaqueous solvent is added to a reactant to provide a nonaqueous solvent/reactant mixture that can act as a heat sink and absorb at least a portion of the heat generated within the reactor. Desirably, a reaction product, or a solvent with a minimal number of hydroxyl groups, is utilized so that the formation of unwanted byproducts can be minimized.
    Type: Application
    Filed: February 28, 2009
    Publication date: March 10, 2011
    Inventors: David C. Molzahn, Kenneth A. Burdett, William L. Gibson, Kriel J. Karel, James E. Mccreight, Indresh Mathur
  • Patent number: 7812185
    Abstract: A cross-metathesis process for preparing an ?,?-functionalized olefin, such as methyl 9-decenoate, and an ?-olefin having three or more carbon atoms, such as 1-decene.
    Type: Grant
    Filed: June 2, 2006
    Date of Patent: October 12, 2010
    Assignee: Dow Global Technologies Inc.
    Inventors: Kenneth A. Burdett, Morteza Mokhtarzadeh, Francis J. Timmers
  • Patent number: 7745652
    Abstract: Integrated processes of preparing industrial chemicals starting from seed oil feedstock compositions containing one or more unsaturated fatty acids or unsaturated fatty acid esters, which are essentially free of metathesis catalyst poisons, particularly hydroperoxides; metathesis of the feedstock composition with a lower olefin, such as ethylene, to form a reduced chain olefin, preferably, a reduced chain ?-olefin, and a reduced chain unsaturated acid or ester, preferably, a reduced chain ?,?-unsaturated acid or ester. The reduced chain unsaturated acid or ester may be (trans)esterified to form a polyester polyolefin, which may be epoxidized to form a polyester polyepoxide. The reduced chain unsaturated acid or ester may be hydroformylated with reduction to produce an ?,?-hydroxy acid or ?,?-hydroxy ester, which may be (trans)esterified with a polyol to form an ?,?-polyester polyol.
    Type: Grant
    Filed: December 5, 2008
    Date of Patent: June 29, 2010
    Assignee: Dow Global Technologies Inc.
    Inventors: Zenon Lysenko, Bob R. Maughon, Jozef Bicerano, Kenneth A. Burdett, Christopher P. Christenson, Clark H. Cummins, Marvin L. Dettloff, Alan K. Schrock, P. J. Thomas, Richard D. Varjian, Jerry E. White, John Michael Maher
  • Patent number: 7696398
    Abstract: A process of stabilizing an olefin metathesis product mixture, preferably, against double bond isomerization and thermal and chemical degradation. The process involves (a) contacting an olefin metathesis product mixture comprising one or more olefins produced in a metathesis process, a metathesis catalyst comprising a catalytic metal and one or more ligands, optionally, one or more metathesis catalyst degradation products, and optionally, one or more metals derived from sources other than the catalyst or catalyst degradation product(s), with an adsorbent, more preferably carbon; or alternatively, (b) subjecting the olefin metathesis product mixture to a two-step distillation, preferably, including short path wiped-film evaporation. A stabilized olefin metathesis product mixture to a two-step distillation, preferably, including short path wiped-film evaporation.
    Type: Grant
    Filed: September 26, 2003
    Date of Patent: April 13, 2010
    Assignee: Dow GlobalTTechnologies, Inc.
    Inventors: Kenneth A. Burdett, Rob R. Maughon, Patrick H. Au-Yeung
  • Publication number: 20090143544
    Abstract: Integrated processes of preparing industrial chemicals starting from seed oil feedstock compositions containing one or more unsaturated fatty acids or unsaturated fatty acid esters, which are essentially free of metathesis catalyst poisons, particularly hydroperoxides; metathesis of the feedstock composition with a lower olefin, such as ethylene, to form a reduced chain olefin, preferably, a reduced chain ?-olefin, and a reduced chain unsaturated acid or ester, preferably, a reduced chain ?,?-unsaturated acid or ester. The reduced chain unsaturated acid or ester may be (trans)esterified to form a polyester polyolefin, which may be epoxidized to form a polyester polyepoxide. The reduced chain unsaturated acid or ester may be hydroformylated with reduction to produce an ?,?-hydroxy acid or ?,?-hydroxy ester, which may be (trans)esterified with a polyol to form an ?,?polyester polyol.
    Type: Application
    Filed: December 5, 2008
    Publication date: June 4, 2009
    Applicant: Dow Global Technologies Inc.
    Inventors: Zenon Lysenko, Bob R. Maughon, Jozef Bicerano, Kenneth A. Burdett, Christopher P. Christenson, Clark H. Cummins, Marvin L. Dettloff, Alan K. Schrock, P. J. Thomas, Richard D. Varjian, Jerry E. White, John Michael Maher
  • Publication number: 20080228017
    Abstract: A cross-metathesis process for preparing an ?,?-functionalized olefin, such as methyl 9-decenoate, and an ?-olefin having three or more carbon atoms, such as 1-decene.
    Type: Application
    Filed: June 2, 2006
    Publication date: September 18, 2008
    Applicant: DOW GLOBAL TECHNOLOGIES INC.
    Inventors: Kenneth A. Burdett, Francis J. Timmers, Morteza Mokhtarzadeh
  • Publication number: 20080103346
    Abstract: A process for separating a homogeneous metathesis catalyst and, optionally, one or more homogeneous metathesis catalyst degradation products from a metathesis reaction mixture containing in addition to said metathesis catalyst and said metathesis catalyst degradation product(s), one or more olefin metathesis products, one or more unconverted reactant olefins, and optionally, a solvent. The process involves contacting the metathesis reaction mixture with a nanofiltration membrane, such as a polyimide nanofiltration membrane, so as to recover a permeate containing a substantial portion of the olefin reaction products, the unconverted reactant olefins, and optional solvent, and a retentate containing the metathesis catalyst, and optionally, metathesis catalyst degradation product(s). In another aspect, this invention pertains to a continuous metathesis reaction-catalyst separation process, preferably, conducted in a nanofiltration membrane reactor.
    Type: Application
    Filed: October 14, 2005
    Publication date: May 1, 2008
    Applicant: DOW GLOBAL TECHNOLOGIES, INC.
    Inventors: Kenneth A. Burdett, Baymond M. Collins, Bob R. Maughon, Michael L. Tulchinsky
  • Patent number: 7176336
    Abstract: A process of preparing an unsaturated alcohol (olefin alcohol), such as, a homo-allylic mono-alcohol or homo-allylic polyol, involving protecting a hydroxy-substituted unsaturated fatty acid or fatty acid ester, such as methyl ricinoleate, derived from a seed oil, to form a hydroxy-protected unsaturated fatty acid or fatty acid ester; homo-metathesizing or cross-metathesizing the hydroxy-protected unsaturated fatty acid or fatty acid ester to produce a product mixture containing a hydroxy-protected unsaturated metathesis product; and deprotecting the hydroxy-protected unsaturated metathesis product under conditions sufficient to prepare the unsaturated alcohol. Preferably, methyl ricinoleate is converted by cross-metathesis or homo-metathesis into the homo-allylic mono-alcohol 1-decene-4-ol or the homo-allylic polyol 9-octadecene-7,12-diol, respectively.
    Type: Grant
    Filed: September 14, 2004
    Date of Patent: February 13, 2007
    Assignee: Dow Global Technologies Inc.
    Inventors: Bob R. Maughon, Kenneth A. Burdett, Zenon Lysenko
  • Patent number: 7119216
    Abstract: An olefin metathesis process involving contacting an unsaturated fatty acid ester or unsaturated fatty acid, such as methyloleate or oleic acid, with a lower olefin, preferably ethylene, in the presence of a metathesis catalyst so as to prepare a first product olefin, preferably, a reduced chain ?-olefin, such as methyl-9-decenoate or 9-decenoic acid, respectively. The metathesis catalyst contains ruthenium or osmium and a chelating ligand, preferably, a chelating ligand containing a carbene moiety and a second donor moiety of a Group 15 or 16 element Optionally, the catalyst can be supported on a catalyst support, such as, a cross-linked polymeric resin.
    Type: Grant
    Filed: February 27, 2002
    Date of Patent: October 10, 2006
    Assignee: Dow Global Technologies Inc.
    Inventors: Thomas H. Newman, Cynthia L. Rand, Kenneth A. Burdett, Bob R. Maughon, Donald L. Morrison, Eric P. Wasserman
  • Publication number: 20060167326
    Abstract: A process of stabilizing an olefin metathesis product mixture, preferably, against double bond isomerization and thermal and chemical degradation. The process involves (a) contacting an olefin metathesis product mixture comprising one or more olefins produced in a metathesis process, a metathesis catalyst comprising a catalytic metal and one or more ligands, optionally, one or more metathesis catalyst degradation products, and optionally, one or more metals derived from sources other than the catalyst or catalyst degradation product(s), with an adsorbent, more preferably carbon; or alternatively, (b) subjecting the olefin metathesis product mixture to a two-step distillation, preferably, including short path wiped-film evaporation. A stabilized olefin metathesis product mixture is disclosed containing one or more olefins obtained in a metathesis process and having a total concentration of metal(s) of less than about 30 parts per million by weight.
    Type: Application
    Filed: September 26, 2003
    Publication date: July 27, 2006
    Inventors: Kenneth Burdett, Rob Maughon, Patrick Au-Yeung
  • Publication number: 20050154221
    Abstract: Integrated processes of preparing industrial chemicals starting from seed oil feedstock compositions containing one or more unsaturated fatty acids or unsaturated fatty acid esters, which are essentially free of metathesis catalyst poisons, particularly hydroperoxides; metathesis of the feedstock composition with a lower olefin, such as ethylene, to form a reduced chain olefin, preferably, a reduced chain ?-olefin, and a reduced chain unsaturated acid or ester, preferably, a reduced chain ?,?-unsaturated acid or ester. The reduced chain unsaturated acid or ester may be (trans)esterified to form a polyester polyolefin, which may be epoxidized to form a polyester polyepoxide. The reduced chain unsaturated acid or ester may be hydroformylated with reduction to produce an ?,?-hydroxy acid or ?,?-hydroxy ester, which may be (trans)esterified with a polyol to form an ?,?polyester polyol.
    Type: Application
    Filed: April 17, 2003
    Publication date: July 14, 2005
    Inventors: Zenon Lysenko, Bob Maughon, Josef Bicerano, Kenneth Burdett, Christopher Christenson, Clark Cummins, Marvin Dettloff, Alan Schrock, P. J. Thomas, Richard Varjian, Jerry White, John Maher
  • Publication number: 20050080301
    Abstract: A process of preparing an unsaturated alcohol (olefin alcohol), such as, a homo-allylic mono-alcohol or homo-allylic polyol, involving protecting a hydroxy-substituted unsaturated fatty acid or fatty acid ester, such as methyl ricinoleate, derived from a seed oil, to form a hydroxy-protected unsaturated fatty acid or fatty acid ester; homo-metathesizing or cross-metathesizing the hydroxy-protected unsaturated fatty acid or fatty acid ester to produce a product mixture containing a hydroxy-protected unsaturated metathesis product; and deprotecting the hydroxy-protected unsaturated metathesis product under conditions sufficient to prepare the unsaturated alcohol. Preferably, methyl ricinoleate is converted by cross-metathesis or homo-metathesis into the homo-allylic mono-alcohol 1-decene-4-ol or the homo-allylic polyol 9-octadecene-7,12-diol, respectively.
    Type: Application
    Filed: September 14, 2004
    Publication date: April 14, 2005
    Inventors: Bob Maughon, Kenneth Burdett, Zenon Lysenko
  • Publication number: 20050070750
    Abstract: An olefin metathesis process involving contacting an unsaturated fatty acid ester or unsaturated fatty acid, such as methyloleate or oleic acid, with a lower olefin, preferably ethylene, in the presence of a metathesis catalyst so as to prepare a first product olefin, preferably, a reduced chain ?-olefin, such as methyl-9-decenoate or 9-decenoic acid, respectively. The metathesis catalyst contains ruthenium or osmium and a chelating ligand, preferably, a chelating ligand containing a carbene moiety and a second donor moiety of a Group 15 or 16 element Optionally, the catalyst can be supported on a catalyst support, such as, a cross-linked polymeric resin.
    Type: Application
    Filed: February 27, 2002
    Publication date: March 31, 2005
    Inventors: Thomas Newman, Cynthia Rand, Kenneth Burdett, Bob Maughon, Donald Morrison, Eric Wasserman
  • Patent number: 6759550
    Abstract: The present invention pertains to an improved method of oxidizing substituted aromatic compounds (such as p xylene) to their corresponding aromatic acids (such as terephthalic acid). The improvement involves carrying out the oxidation reaction in an aqueous medium, wherein the aqueous medium contains at least 30 percent water, preferably up to 30 percent surfactant and preferably a low molecular weight material containing a hydrophilic end group as a co-surfactant. The reaction is carried out at a pH of less than 3.0.
    Type: Grant
    Filed: November 13, 2002
    Date of Patent: July 6, 2004
    Assignee: The Dow Chemical Company
    Inventors: John Klier, Christopher J. Tucker, Thomas H. Kalantar, Kenneth A. Burdett, Daniel Patrick Green, Luciano Piras, Sergio Schena, Guo-shuh John Lee
  • Publication number: 20020042488
    Abstract: Novel substantially random functionalized interpolymers and processes for making them are disclosed. The novel interpolymers include those prepared from ethylene and vinyl aromatic monomers such as ethylene-styrene interpolymers which are then functionalized with a variety of electrophilic and nucleophilic reagents.
    Type: Application
    Filed: January 10, 2001
    Publication date: April 11, 2002
    Inventors: Ray E. Drumright, Robert H. Terbrueggen, Kenneth A. Burdett, Francis J. Timmers, Stephen F. Hahn
  • Publication number: 20020037988
    Abstract: Novel substantially random functionalized interpolymers and processes for making them are disclosed. The novel interpolymers include those prepared from ethylene and vinyl aromatic monomers such as ethylene-styrene interpolymers which are then functionalized with a variety of electrophilic and nucleophilic reagents.
    Type: Application
    Filed: October 10, 2001
    Publication date: March 28, 2002
    Inventors: Ray E. Drumright, Robert H. Terbrueggen, Kenneth A. Burdett, Francis J. Timmers, Stephen F. Hahn
  • Patent number: 6313252
    Abstract: Novel substantially random functionalized interpolymers and processes for making them are disclosed. The novel interpolymers include those prepared from ethylene and vinyl aromatic monomers such as ethylene-styrene interpolymers which are then functionalized with a variety of electrophilic and nucleophilic reagents.
    Type: Grant
    Filed: February 4, 1999
    Date of Patent: November 6, 2001
    Assignee: The Dow Chemical Company
    Inventors: Ray E. Drumright, Robert H. Terbrueggen, Kenneth A. Burdett, Francis J. Timmers, Stephen F. Hahn
  • Patent number: 5583268
    Abstract: A process of catalytically reacting a 3-18 carbon mono-olefin such as cyclohexene with an arylhydroxide such as phenol in the liquid phase forming an ortho-alkylated arylhydroxide which is subsequently catalytically dehydrogentated to form an ortho-alkenylarylhydroxide or ortho-arylarylhydroxide such as ortho-phenylphenol.
    Type: Grant
    Filed: December 15, 1995
    Date of Patent: December 10, 1996
    Assignee: The Dow Chemical Company
    Inventors: Guo-shuh J. Lee, Juan M. Garces, Dennis A. Hucul, Tracy L. Young, Kenneth A. Burdett
  • Patent number: 5488020
    Abstract: A composition comprising a copper(I) impregnated aluminosilicate zeolite wherein the zeolite is selected from faujasites, L and .OMEGA., and wherein the zeolite has a silica to bulk alumina molar ratio between about 12 and about 50 and a silica to framework alumina molar ratio of at least about 15. The catalyst preparation involves in the following order: drying the selected zeolite, impregnating the dried zeolite with a copper(II) salt, calcining the copper(II)-impregnated zeolite, and reducing the copper(II) to copper(I). The composition is useful as a catalyst for the cyclodimerization of 1,3-butadiene to 4-vinylcyclohexene.
    Type: Grant
    Filed: February 23, 1994
    Date of Patent: January 30, 1996
    Assignee: The Dow Chemical Company
    Inventors: Ronald W. Diesen, Kenneth A. Burdett, Ravi S. Dixit, Stanley S. T. King