Patents by Inventor Renuka N. Ganesh

Renuka N. Ganesh 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: 8993702
    Abstract: This invention relates to a transition metal catalyst compound represented by the structure: wherein M is hafnium or zirconium; each X is, independently, selected from the group consisting of hydrocarbyl radicals having from 1 to 20 carbon atoms, hydrides, amides, alkoxides, sulfides, phosphides, halogens, dienes, amines, phosphines, ethers, or a combination thereof; each R1 and R3 are, independently, a C1 to C8 alkyl group; and each R2, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, and R14 are, independently, hydrogen, or a substituted or unsubstituted hydrocarbyl group having from 1 to 8 carbon atoms, provided however that at least three of the R10-R14 groups are not hydrogen, compositions thereof and methods of use thereof to prepare polymers.
    Type: Grant
    Filed: October 19, 2012
    Date of Patent: March 31, 2015
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Donna J. Crowther, Renuka N. Ganesh, Andrew G. Narvaez, Jr., Patrick Brant
  • Patent number: 8940839
    Abstract: This invention relates to a composition comprising a multiblock polyolefin represented by the formula: PO—C(R11)(R12)—C(R13)?C(R14)—C(R15)(R16)—PO*, or isomers thereof, wherein R11, R12, R13, R14, R15, and R16, are each independently a substituted or unsubstituted C1 through C4 hydrocarbyl group or a hydrogen; PO and PO* are polyolefins; PO and PO* are each independently a substituted or unsubstituted hydrocarbyl group having 9 to 4000 carbon atoms, provided that at least one of PO and PO* are C20 or greater, said polyolefin having: 1) an internal unsaturation as shown by the 13C NMR peak at between about 128 and about 132 ppm; 2) an Mn ratio “Z”=0.1 to 10 where Z is the Mn (as determined by 13C NMR) divided by Mn (as determined according to Gel Permeation Chromotography using polystyrene standards); and 3) optionally, from 0.3(J) and 0.
    Type: Grant
    Filed: March 25, 2011
    Date of Patent: January 27, 2015
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: John R. Hagadorn, Charles J. Ruff, Renuka N. Ganesh, Patrick Brant
  • Patent number: 8674040
    Abstract: Pyridyldiamido transition metal complexes are disclosed for use in alkene polymerization to produce multimodal polyolefins.
    Type: Grant
    Filed: May 24, 2011
    Date of Patent: March 18, 2014
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: John R. Hagadorn, Renuka N. Ganesh
  • Patent number: 8669326
    Abstract: This invention relates to a process to functionalize polyolefins comprising contacting a transition metal amide catalyst with an amine (preferably a secondary amine), and one or more vinyl terminated materials, preferably one or more vinyl terminated polyolefins. This invention further relates to the amine-functionalized polyolefins produced thereby.
    Type: Grant
    Filed: March 25, 2011
    Date of Patent: March 11, 2014
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: John R. Hagadorn, Donna J. Crowther, Renuka N. Ganesh, Patrick Brant
  • Patent number: 8519147
    Abstract: This invention relates to a carbene complex of metal salt represented by the formula: [T?M(R)c]n wherein, R is a monoanionic group; c is 1 or 2; M is a Li or Mg; T is a cyclic carbene ligand; and n is selected from the group of integers comprising 1 to 24 wherein the complex has 50% or less decomposition when stored in 0.01 molar benzene at 23° C. for a period of 1 hour. This invention also relates to transition-metal-carbene complexes prepared from such carbene complexes of metal salts, where the transition-metal-carbene complex is represented by the formula: [M*(T)(L0)q(L1?)s(L2?)t]g, where M* is a transition metal from Group 6, 7, 8, 9, 10, 11 or 12, T is a cyclic carbene ligand, L0 is a neutral ligand, L1? is a monoanionic ligand, L2? is a dianionic ligand, q is 0, 1, 2, 3 or 4, s is 0, 1, 2, 3, or 4, t is 0, 1, 2, 3, or 4, g is the overall charge of the molecule. The transition-metal-carbene complexes may be used for synthesis reactions, including metathesis of olefins.
    Type: Grant
    Filed: November 3, 2010
    Date of Patent: August 27, 2013
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: John R. Hagadorn, Matthew W. Holtcamp, Matthew S. Bedoya, Renuka N. Ganesh
  • Patent number: 8394902
    Abstract: Pyridyldiamido transition metal complexes are disclosed for use in alkene polymerization.
    Type: Grant
    Filed: March 25, 2011
    Date of Patent: March 12, 2013
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: John R. Hagadorn, Renuka N. Ganesh, Dmitry V. Uborsky, Ilya S. Borisov, Ivan V. Pruss, Alexander Z. Voskoboynikov
  • Patent number: 8318998
    Abstract: This invention relates to a transition metal catalyst compound represented by the structure: wherein M is hafnium or zirconium; each X is, independently, selected from the group consisting of hydrocarbyl radicals having from 1 to 20 carbon atoms, hydrides, amides, alkoxides, sulfides, phosphides, halogens, dienes, amines, phosphines, ethers, or a combination thereof; each R1 and R3 are, independently, a C1 to C8 alkyl group; and each R2, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, and R14 are, independently, hydrogen, or a substituted or unsubstituted hydrocarbyl group having from 1 to 8 carbon atoms, provided however that at least three of the R10-R14 groups are not hydrogen, compositions thereof and methods of use thereof to prepare polymers.
    Type: Grant
    Filed: March 25, 2011
    Date of Patent: November 27, 2012
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Donna J. Crowther, Renuka N. Ganesh, Andrew G. Narvaez, Jr., Patrick Brant
  • Publication number: 20120245276
    Abstract: This invention relates to a process to functionalize polyolefins comprising contacting a transition metal amide catalyst with an amine (preferably a secondary amine), and one or more vinyl terminated materials, preferably one or more vinyl terminated polyolefins. This invention further relates to the amine-functionalized polyolefins produced thereby.
    Type: Application
    Filed: March 25, 2011
    Publication date: September 27, 2012
    Inventors: John R. Hagadorn, Donna J. Crowther, Renuka N. Ganesh, Patrick Brant
  • Publication number: 20120245290
    Abstract: This invention relates to a composition comprising a multiblock polyolefin represented by the formula: PO—C(R11)(R12)—C(R13)?C(R14)—C(R15)(R16)—PO*, or isomers thereof, wherein R11, R12, R13, R14, R15, and R16, are each independently a substituted or unsubstituted C1 through C4 hydrocarbyl group or a hydrogen; PO and PO* are polyolefins; PO and PO* are each independently a substituted or unsubstituted hydrocarbyl group having 9 to 4000 carbon atoms, provided that at least one of PO and PO* are C20 or greater, said polyolefin having: 1) an internal unsaturation as shown by the 13C NMR peak at between about 128 and about 132 ppm; 2) an Mn ratio “Z”=0.1 to 10 where Z is the Mn (as determined by 13C NMR) divided by Mn (as determined according to Gel Permeation Chromotography using polystyrene standards); and 3) optionally, from 0.3(J) and 0.
    Type: Application
    Filed: March 25, 2011
    Publication date: September 27, 2012
    Inventors: John R. Hagadorn, Charles J. Ruff, Renuka N. Ganesh, Patrick Brant
  • Publication number: 20120245313
    Abstract: This invention relates to a transition metal catalyst compound represented by the structure: wherein M is hafnium or zirconium; each X is, independently, selected from the group consisting of hydrocarbyl radicals having from 1 to 20 carbon atoms, hydrides, amides, alkoxides, sulfides, phosphides, halogens, dienes, amines, phosphines, ethers, or a combination thereof; each R1 and R3 are, independently, a C1 to C8 alkyl group; and each R2, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, and R14 are, independently, hydrogen, or a substituted or unsubstituted hydrocarbyl group having from 1 to 8 carbon atoms, provided however that at least three of the R10-R14 groups are not hydrogen, compositions thereof and methods of use thereof to prepare polymers.
    Type: Application
    Filed: March 25, 2011
    Publication date: September 27, 2012
    Inventors: Donna J. Crowther, Renuka N. Ganesh, Andrew G. Narvaez, JR., Patrick Brant
  • Publication number: 20120071616
    Abstract: Pyridyldiamido transition metal complexes are disclosed for use in alkene polymerization.
    Type: Application
    Filed: March 25, 2011
    Publication date: March 22, 2012
    Inventors: John R. Hagadorn, Renuka N. Ganesh, Dmitry V. Uborsky, Ilya S. Borisov, Ivan V. Pruss, Alexander Z. Voskoboynikov
  • Patent number: 8022005
    Abstract: This invention relates to an activator, catalyst system, and the use thereof. In one aspect, the catalyst system includes one or more polymerization catalysts and at least one activator. The activator comprises one or more heterocyclic heteroatom containing ligands coordinated to an alumoxane, wherein the activator is a reaction product of one or more alumoxanes and one or more heterocyclic heteroatom containing compounds, the one or more heterocyclic heteroatom containing ligands represented by the formula: where Y is O, S, PH or NH; wherein each substituent X2, X3, X4, X5, X6, and X7 is independently selected from the group consisting of hydrogen, chlorine, fluorine, iodine, and bromine, provided at least one of X2, X3, X4, X5, X6 and X7 is not hydrogen when Y is NH; and wherein the ratio of the heterocyclic heteroatom containing ligand to aluminum is between about 0.01 and about 10 molar equivalents. The catalyst system may be supported or non-supported.
    Type: Grant
    Filed: November 8, 2007
    Date of Patent: September 20, 2011
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Matthew W. Holtcamp, Renuka N. Ganesh
  • Publication number: 20110224391
    Abstract: Pyridyldiamido transition metal complexes are disclosed for use in alkene polymerization to produce multimodal polyolefins.
    Type: Application
    Filed: May 24, 2011
    Publication date: September 15, 2011
    Inventors: JOHN R. HAGADORN, RENUKA N. GANESH
  • Publication number: 20110112304
    Abstract: This invention relates to a carbene complex of metal salt represented by the formula: [T?M(R)c]n wherein, R is a monoanionic group; c is 1 or 2; M is a Li or Mg; T is a cyclic carbene ligand; and n is selected from the group of integers comprising 1 to 24 wherein the complex has 50% or less decomposition when stored in 0.01 molar benzene at 23° C. for a period of 1 hour. This invention also relates to transition-metal-carbene complexes prepared from such carbene complexes of metal salts, where the transition-metal-carbene complex is represented by the formula: [M*(T)(L0)q(L1?)s(L2?)t]g, where M* is a transition metal from Group 6, 7, 8, 9, 10, 11 or 12, T is a cyclic carbene ligand, L° is a neutral ligand, L1? is a monoanionic ligand, L2? is a dianionic ligand, q is 0, 1, 2, 3 or 4, s is 0, 1, 2, 3, or 4, t is 0, 1, 2, 3, or 4, g is the overall charge of the molecule. The transition-metal-carbene complexes may be used for synthesis reactions, including metathesis of olefins.
    Type: Application
    Filed: November 3, 2010
    Publication date: May 12, 2011
    Inventors: John R. Hagadorn, Matthew W. Holtcamp, Matthew S. Bedoya, Renuka N. Ganesh
  • Patent number: 7692046
    Abstract: A promoter can have utility in selective heterogeneous oxidation of arylalkyl hydrocarbons such as, for example, cyclohexyl benzene and/or sec-butyl benzene to form hydroperoxides. The promoter can include the product of contacting a solid support comprising a metal oxide surface and an iron compound. The solid support can include, for example, titanium dioxide and/or an iron oxide such as magnetite and can have magnetic susceptibility. A method for the oxidation of arylalkyl hydrocarbons to form hydroperoxides can include contacting 16 an arylalkyl hydrocarbon with oxygen in the presence of the promoter under catalytic oxidation conditions to form arylalkyl hydroperoxide, which can then be converted to phenol via cleavage 26. The method can include recovery 22 of the promoter from the arylalkyl hydroperoxide and can further include recycling the recovered promoter to the contacting 16. Where the solid support has magnetic susceptibility, the recovery 22 can include magnetic separation of the promoter.
    Type: Grant
    Filed: June 21, 2007
    Date of Patent: April 6, 2010
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Matthew W. Holtcamp, Renuka N. Ganesh, Tan-Jen Chen, Jihad M. Dakka
  • Patent number: 7648940
    Abstract: This invention relates to a catalyst composition of the formula: where Z—O is a support material, where O is oxygen, preferably Z is Si, Ti, Al, Sn, Fe, Ga, Zr, B, Mg, or Cr; each X is, independently, N, O, P or S; each n is, independently, 1 or 2; each R is, independently, an alkyl group, a substituted alkyl group, an aryl group, or a substituted aryl group, provided at least one R group is an aryl or substituted aryl group. This invention also relates to the use of the above catalyst compound with an aluminum alkyl to polymerize olefins and other monomers.
    Type: Grant
    Filed: October 30, 2006
    Date of Patent: January 19, 2010
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Matthew W. Holtcamp, Renuka N. Ganesh
  • Publication number: 20090124486
    Abstract: This invention relates to an activator, catalyst system, and the use thereof. In one aspect, the catalyst system includes one or more polymerization catalysts and at least one activator. The activator comprises one or more heterocyclic heteroatom containing ligands coordinated to an alumoxane, wherein the activator is a reaction product of one or more alumoxanes and one or more heterocyclic heteroatom containing compounds, the one or more heterocyclic heteroatom containing ligands represented by the formula: where Y is O, S, PH or NH; wherein each substituent X2, X3, X4, X5, X6, and X7 is independently selected from the group consisting of hydrogen, chlorine, fluorine, iodine, and bromine, provided at least one of X2, X3, X4, X5, X6 and X7 is not hydrogen when Y is NH; and wherein the ratio of the heterocyclic heteroatom containing ligand to aluminum is between about 0.01 and about 10 molar equivalents. The catalyst system may be supported or non-supported.
    Type: Application
    Filed: November 8, 2007
    Publication date: May 14, 2009
    Inventors: Matthew W. Holtcamp, Renuka N. Ganesh
  • Publication number: 20080319234
    Abstract: A promoter can have utility in selective heterogeneous oxidation of arylalkyl hydrocarbons such as, for example, cyclohexyl benzene and/or sec-butyl benzene to form hydroperoxides. The promoter can include the product of contacting a solid support comprising a metal oxide surface and an iron compound. The solid support can include, for example, titanium dioxide and/or an iron oxide such as magnetite and can have magnetic susceptibility. A method for the oxidation of arylalkyl hydrocarbons to form hydroperoxides can include contacting 16 an arylalkyl hydrocarbon with oxygen in the presence of the promoter under catalytic oxidation conditions to form arylalkyl hydroperoxide, which can then be converted to phenol via cleavage 26. The method can include recovery 22 of the promoter from the arylalkyl hydroperoxide and can further include recycling the recovered promoter to the contacting 16. Where the solid support has magnetic susceptibility, the recovery 22 can include magnetic separation of the promoter.
    Type: Application
    Filed: June 21, 2007
    Publication date: December 25, 2008
    Inventors: Matthew W. Holtcamp, Renuka N. Ganesh, Tan-Jen Chen, Jihad M. Dakka