Patents by Inventor Michael A. Risch

Michael A. Risch 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: 7858714
    Abstract: This invention is directed to processes of making polymer in the presence of a fluorinated hydrocarbon and recovering the polymer. The processes provided enable polymerization processes to be practiced with minimal fouling in the reaction system, and allows for the recovery of the fluorinated hydrocarbon and other hydrocarbons such as hydrocarbons for reuse in the process or hydrocarbon by-products from the polymerization process. The invention is particularly beneficial in the production of propylene based polymers using Ziegler Natta catalyst systems.
    Type: Grant
    Filed: June 20, 2005
    Date of Patent: December 28, 2010
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Robert O. Hagerty, Chia S. Chee, Randall B. Laird, Michael A. Risch, Pradeep P. Shirodkar, Peijun Jiang
  • Patent number: 7728084
    Abstract: This invention is directed to processes of making polymer in the presence of a hydrofluorocarbon or perfluorocarbon and recovering the polymer. The processes provided enable polymerization processes to be practiced with minimal fouling in the reaction system, and to the recovery of the hydrofluorocarbon and other hydrocarbons such as hydrocarbons for reuse in the process or hydrocarbon by-products from the polymerization process. The invention is particularly beneficial in the production of ethylene based polymers using Ziegler Natta catalyst systems.
    Type: Grant
    Filed: June 20, 2005
    Date of Patent: June 1, 2010
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Robert O. Hagerty, Chia S. Chee, Randall B. Laird, Michael A. Risch, Pradeep P. Shirodkar, Zerong Lin, Larry L. Iaccino
  • Patent number: 7700699
    Abstract: This invention is directed to processes of making polymer in the presence of a fluorinated hydrocarbon and recovering the polymer. The processes provided enable polymerization processes to be practiced with minimal fouling in the reaction system, and allows for the recovery of the fluorinated hydrocarbon and other hydrocarbons such as hydrocarbons for re-use in the process or hydrocarbon by-products from the polymerization process. The invention is particularly beneficial in the production of propylene polymers and copolymes using bulky ligand metallocene-type catalyst systems.
    Type: Grant
    Filed: June 20, 2005
    Date of Patent: April 20, 2010
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Robert O. Hagerty, Randall B. Laird, Michael A. Risch, Pradeep P. Shirodkar, Peijun Jiang
  • Patent number: 7691956
    Abstract: This invention is directed to processes of making polymer in the presence of a hydrofluorocarbon or perfluorocarbon and recovering the polymer. The processes provided enable polymerization processes to be practiced with minimal fouling in the reaction system, and to the recovery of the hydrofluorocarbon and other hydrocarbons such as hydrocarbons for reuse in the process or hydrocarbon by-products from the polymerization process. The invention is particularly beneficial in the production of ethylene based polymers using bulky ligand metallocene-type catalyst systems.
    Type: Grant
    Filed: June 20, 2005
    Date of Patent: April 6, 2010
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Robert O. Hagerty, Chia S. Chee, Randall B. Laird, Michael A. Risch, Pradeep P. Shirodkar, Zerong Lin, Larry L. Iaccino
  • Patent number: 7550637
    Abstract: A selective hydrogenation catalyst composition comprises at least two different metal components selected from Groups 8 to 10 of the Periodic Table of Elements, one of which may be rhodium, and at least one metal component selected from Group 13 of the Periodic Table of Elements, such as indium.
    Type: Grant
    Filed: August 15, 2005
    Date of Patent: June 23, 2009
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: David M. Lowe, Michel Molinier, John D. Y. Ou, Michael A. Risch, Anthony F. Volpe, Jr., Jeffrey C. Yoder
  • Patent number: 7491776
    Abstract: This invention is directed to processes of making polymer in the presence of a hydrofluorocarbon or perfluorocarbon and recovering the polymer. The processes provided enable polymerization processes to be practiced with minimal fouling in the reaction system, and provide polymer products that can be manufactured to relatively low densities. The invention is particularly beneficial in the production of ethylene based polymers using chromium catalyst systems.
    Type: Grant
    Filed: June 20, 2005
    Date of Patent: February 17, 2009
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Robert O. Hagerty, Chia S. Chee, Randall B. Laird, Michael A. Risch, Pradeep P. Shirodkar, Zerong Lin, Larry L. Iaccino
  • Publication number: 20080312375
    Abstract: This invention is directed to processes of making polymer in the presence of a fluorinated hydrocarbon and recovering the polymer. The processes provided enable polymerization processes to be practiced with minimal fouling in the reaction system, and allows for the recovery of the fluorinated hydrocarbon and other hydrocarbons such as hydrocarbons for re-use in the process or hydrocarbon by-products from the polymerization process. The invention is particularly beneficial in the production of propylene polymers and copolymes using bulky ligand metallocene-type catalyst systems.
    Type: Application
    Filed: June 20, 2005
    Publication date: December 18, 2008
    Inventors: Robert O. Hagerty, Randall B. Laird, Michael A. Risch, Pradeep P. Shirodkar, Peijun Jiang
  • Patent number: 7462751
    Abstract: A selective hydrogenation catalyst composition comprises a support; a first metal component comprising rhodium; and a second metal component comprising a metal other than rhodium and selected from Groups 1 to 15 of the Periodic Table of Elements, wherein said first and second components are predominantly contained in an outer surface layer of the support having a depth of not more than 1000 microns.
    Type: Grant
    Filed: August 26, 2005
    Date of Patent: December 9, 2008
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: David M. Lowe, Michel Molinier, John D. Y. Ou, Michael A. Risch, Anthony F. Volpe, Jr., Jeffrey C. Yoder, Valery Sokolovskii
  • Patent number: 7449530
    Abstract: This invention is directed to processes of making polymer in the presence of a fluorinated hydrocarbon and recovering the polymer. The processes provided enable polymerization processes to be practiced with minimal fouling in the reaction system, and allows for the recovery of the fluorinated hydrocarbon and other hydrocarbons such as hydrocarbons for re-use in the process or hydrocarbon by-products from the polymerization process. The invention is particularly beneficial in the production of propylene-ethylene based copolymers using Ziegler-Natta catalyst systems.
    Type: Grant
    Filed: June 20, 2005
    Date of Patent: November 11, 2008
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Robert O. Hagerty, Randall B. Laird, Michael A. Risch, Pradeep P. Shirodkar, Peijun Jiang
  • Patent number: 7423103
    Abstract: This invention is directed to a polymerization process that is carried out at relatively high productivity levels and with relatively low fouling. The process includes mixing together a catalyst system, at least one monomer and a hydrofluorocarbon to produce the polymer. The reaction is carried out such that little to no chlorine containing hydrocarbons are present.
    Type: Grant
    Filed: June 20, 2005
    Date of Patent: September 9, 2008
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Kevin B. Stavens, Robert O. Hagerty, Randall B. Laird, Zerong Lin, Michael A. Risch, Larry L. Iaccino
  • Publication number: 20080081885
    Abstract: This invention is directed to processes of making polymer in the presence of a hydrofluorocarbon or perfluorocarbon and recovering the polymer. The processes provided enable polymerization processes to be practiced with minimal fouling in the reaction system, and to the recovery of the hydrofluorocarbon and other hydrocarbons such as hydrocarbons for reuse in the process or hydrocarbon by-products from the polymerization process. The invention is particularly beneficial in the production of ethylene based polymers using bulky ligand metallocene-type catalyst systems.
    Type: Application
    Filed: June 20, 2005
    Publication date: April 3, 2008
    Inventors: Robert O. Hagerty, Chia S. Chee, Randall B. Laird, Michael A. Risch, Pradeep P. Shirodkar, Zerong Lin, Larry L. Iaccino
  • Patent number: 7326821
    Abstract: This invention is to a process for removing dimethyl ether from an olefin stream. The process includes contacting the olefin stream with a molecular sieve that has improved capacity to adsorb the dimethyl ether from the olefin stream. The molecular sieve used to remove the dimethyl ether has low or no activity in converting the olefin in the olefin stream to other products.
    Type: Grant
    Filed: June 16, 2003
    Date of Patent: February 5, 2008
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Michael A. Risch, John Di-Yi Ou
  • Publication number: 20070293638
    Abstract: This invention is directed to processes of making polymer in the presence of a hydrofluorocarbon or perfluorocarbon and recovering the polymer. The processes provided enable polymerization processes to be practiced with minimal fouling in the reaction system, and provide polymer products that can be manufactured to relatively low densities. The invention is particularly beneficial in the production of ethylene based polymers using chromium catalyst systems.
    Type: Application
    Filed: June 20, 2005
    Publication date: December 20, 2007
    Applicant: EXXONMOBIL CHEMICAL PATENTS INC.
    Inventors: Robert Hagerty, Chia Chee, Randall Laird, Michael Risch, Pradeep Shirodkar, Zerong Lin, Larry Iaccino
  • Publication number: 20070255017
    Abstract: This invention is directed to processes of making polymer in, the presence of a fluorinated hydrocarbon and recovering the polymer. The processes provided enable polymerization processes to be practiced with minimal fouling in the reaction system, and allows for the recovery of the fluorinated hydrocarbon and other hydrocarbons such as hydrocarbons for re-use in the process or hydrocarbon by-products from the polymerization process. The invention is particularly beneficial in the production of propylene-ethylene based copolymers using Ziegler-Natta catalyst systems.
    Type: Application
    Filed: June 20, 2005
    Publication date: November 1, 2007
    Inventors: Robert Hagerty, Randall Laird, Michael Risch, Pradeep Shirodkar, Peijun Jiang
  • Publication number: 20070249763
    Abstract: This invention is directed to processes of making polymer in the presence of a hydrofluorocarbon or perfluorocarbon and recovering the polymer. The processes provided enable polymerization processes to be practiced with minimal fouling in the reaction system, and to the recovery of the hydrofluorocarbon and other hydrocarbons such as hydrocarbons for reuse in the process or hydrocarbon by-products from the polymerization process. The invention is particularly beneficial in the production of ethylene based polymers using Ziegler Natta catalyst systems.
    Type: Application
    Filed: June 20, 2005
    Publication date: October 25, 2007
    Inventors: Robert Hagerty, Chia Chee, Randall Laird, Michael Risch, Pradeep Shirodkar, Zerong Lin, Larry Iaccino
  • Publication number: 20070208146
    Abstract: This invention is directed to processes of making polymer in the presence of a fluorinated hydrocarbon and recovering the polymer. The processes provided enable polymerization processes to be practiced with minimal fouling in the reaction system, and allows for the recovery of the fluorinated hydrocarbon and other hydrocarbons such as hydrocarbons for reuse in the process or hydrocarbon by-products from the polymerization process. The invention is particularly beneficial in the production of propylene based polymers using Ziegler Natta catalyst systems.
    Type: Application
    Filed: June 20, 2005
    Publication date: September 6, 2007
    Inventors: Robert Hagerty, Chia Chee, Randall Laird, Michael Risch, Pradeep Shirodkar, Peijun Jiang
  • Publication number: 20070208154
    Abstract: This invention is directed to a polymerization process that is carried out at relatively high productivity levels and with relatively low fouling. The process includes mixing together a catalyst system, at least one monomer and a hydrofluorocarbon to produce the polymer. The reaction is carried out such that little to no chlorine containing hydrocarbons are present.
    Type: Application
    Filed: June 20, 2005
    Publication date: September 6, 2007
    Inventors: Kevin Stavens, Robert Hagerty, Randall Laird, Zerong Lin, Michael Risch, Larry Iaccino
  • Patent number: 7227047
    Abstract: A process is disclosed for selectively removing isobutene and butadiene from a stream, the process comprising contacting the stream with a hydrogenation catalyst to hydrogenate butadiene and an oligomerization catalyst to oligomerize isobutene.
    Type: Grant
    Filed: August 22, 2003
    Date of Patent: June 5, 2007
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Michael A Risch, John Di-Yi Ou, Cor F. Van Egmond
  • Patent number: 7220700
    Abstract: A selective hydrogenation catalyst composition comprises a support; a first metal component comprising rhodium; and a second metal component comprising a metal other than rhodium and selected from Groups 1 to 15 of the Periodic Table of Elements, wherein said first and second components are predominantly contained in an outer surface layer of the support having a depth of not more than 1000 microns.
    Type: Grant
    Filed: November 24, 2003
    Date of Patent: May 22, 2007
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: David M. Lowe, Michel Molinier, John D. Y. Ou, Michael A. Risch, Anthony F. Volpe, Jr., Jeffrey C. Yoder, Valery Sokolovskii
  • Patent number: 7220701
    Abstract: A selective hydrogenation catalyst composition comprises a rhodium component present in an amount such that the catalyst composition comprises less than 3.0% of rhodium by weight of the total catalyst composition; and an indium component present in an amount such that the catalyst composition comprises at least 0.3% and less than 5.0% of indium by weight of the total catalyst composition.
    Type: Grant
    Filed: November 24, 2003
    Date of Patent: May 22, 2007
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: David M. Lowe, Michel Molinier, John D. Y. Ou, Michael A. Risch, Anthony F. Volpe, Jr., Jeffrey C. Yoder