Patents by Inventor Michael Francis McDonald

Michael Francis McDonald 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).

  • Halogenation processes
    Patent number: 8354473
    Abstract: The invention discloses improved processes to halogenate polymers. In particular, the invention discloses to improved processes to halogenate polymers made from C4-1012 isoolefins.
    Type: Grant
    Filed: February 11, 2011
    Date of Patent: January 15, 2013
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: David Yen-Lung Chung, Michael Francis McDonald, Robert Norman Webb, Richard Dwight Hembree
  • Halogenation Processes
    Publication number: 20110136987
    Abstract: The invention discloses improved processes to halogenate polymers. In particular, the invention discloses to improved processes to halogenate polymers made from C4-1012 isoolefins.
    Type: Application
    Filed: February 11, 2011
    Publication date: June 9, 2011
    Inventors: David Yen-Lung Chung, Michael Francis McDonald, Robert Norman Webb, Richard Dwight Hembree
  • Halogenation processes
    Patent number: 7910662
    Abstract: The invention discloses improved processes to halogenate polymers. In particular, the invention discloses to improved processes to halogenate polymers made from C4-1012 isoolefins.
    Type: Grant
    Filed: December 28, 2005
    Date of Patent: March 22, 2011
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: David Yen-Lung Chung, Michael Francis McDonald, Robert Norman Webb, Richard Dwight Hembree
  • Reactor systems for use in polymerization processes
    Patent number: 7781547
    Abstract: The invention relates to new polymerization processes using hydrofluorocarbons to produce polymers. In particular, the invention relates to new polymerization processes using turbulent flow reactor systems using diluents including one or more hydrofluorocarbon(s) to produce polymers.
    Type: Grant
    Filed: June 25, 2004
    Date of Patent: August 24, 2010
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Yuan-Ju (Ray) Chen, Michael Francis McDonald, Timothy Daniel Shaffer, David Yen-Lung Chung, Robert Norman Webb
  • Polymerization processes
    Patent number: 7723447
    Abstract: The invention provides for a process to produce polymers utilizing a hydrofluorocarbon diluent.
    Type: Grant
    Filed: December 19, 2003
    Date of Patent: May 25, 2010
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Scott Thomas Milner, Michael Gerard Matturro, Timothy Daniel Shaffer, Robert Norman Webb, David Yen-Lung Chung, Michael Francis McDonald
  • Processes utilizing extractive distillation
    Patent number: 7699962
    Abstract: The invention relates to methods for separating mixture components such as reactor effluent components. In particular, the invention relates to the use of an extractive agent such as a hydrocarbon in an extractive distillation process to separate monomers such as a C4-C7 isoolefins such as isobutylene from mixtures such as reactor effluents including one or more hydrofluorocarbon(s) (HFC).
    Type: Grant
    Filed: June 23, 2004
    Date of Patent: April 20, 2010
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Michael Francis McDonald, Ralph Howard Schatz, Claude André Gautier, Richard Dwight Hembree
  • Halogenation Processes
    Publication number: 20080293892
    Abstract: The invention discloses improved processes to halogenate polymers. In particular, the invention discloses to improved processes to halogenate polymers made from C4-1012 isoolefins.
    Type: Application
    Filed: December 28, 2005
    Publication date: November 27, 2008
    Inventors: David Yen-Lung Chung, Michael Francis McDonald, Robert Norman Webb, Richard Dwight Hembree
  • Methods for Separating Slurry Components
    Publication number: 20080290049
    Abstract: The invention relates to methods for separating slurry components. In particular, the invention relates to the concentration of polymer particles in a slurry from the polymerization of C4-C7 isoolefins.
    Type: Application
    Filed: June 23, 2004
    Publication date: November 27, 2008
    Inventors: Timothy Daniel Shaffer, Scott Thomas Milner, David Yen-Lung Chung, Michael Francis McDonald, Robert Norman Webb, Pamela Jean Wright
  • Polymerization processes
    Patent number: 7423100
    Abstract: The invention provides for polymerization processes to produce polymers utilizing boiling pool reactor systems and diluents including hydrofluorocarbons.
    Type: Grant
    Filed: December 19, 2003
    Date of Patent: September 9, 2008
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Michael Francis McDonald, Scott Thomas Milner, Timothy Daniel Shaffer, Robert Norman Webb
  • Polymerization processes
    Patent number: 7414101
    Abstract: The invention provides for a process to produce polymers utilizing a hydrofluorocarbon diluent.
    Type: Grant
    Filed: May 22, 2007
    Date of Patent: August 19, 2008
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Timothy Daniel Shaffer, Scott Thomas Milner, Michael Gerard Matturro, David Yen-Lung Chung, Michael Francis McDonald, Robert Norman Webb
  • Reactor Systems for use in Polymerization Processes
    Publication number: 20080103272
    Abstract: The invention relates to new polymerization processes using hydrofluorocarbons to produce polymers. In particular, the invention relates to new polymerization processes using turbulent flow reactor systems using diluents including one or more hydrofluorocarbon(s) to produce polymers.
    Type: Application
    Filed: June 25, 2004
    Publication date: May 1, 2008
    Inventors: Yuan-Ju ( Ray) Chen, Michael Francis McDonald, Timothy Daniel Shaffer, David Yen-Lung Chung, Robert Norman Webb
  • Polymerization processes
    Patent number: 7232872
    Abstract: The invention provides for a process to produce polymers utilizing a hydrofluorocarbon diluent.
    Type: Grant
    Filed: December 19, 2003
    Date of Patent: June 19, 2007
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Timothy Daniel Shaffer, Scott Thomas Milner, Michael Gerard Matturro, David Yen-Lung Chung, Michael Francis McDonald, Robert Norman Webb
  • Polymerization processes
    Patent number: 7214750
    Abstract: The invention relates to new processes to produce polymers utilizing bayonette cooled slurry reactor systems and diluents including hydrofluorocarbons.
    Type: Grant
    Filed: December 19, 2003
    Date of Patent: May 8, 2007
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Michael Francis McDonald, Scott Thomas Milner, Timothy Daniel Shaffer, Robert Norman Webb
  • Process for polymerizing cationically polymerizable monomers
    Patent number: 6858690
    Abstract: The invention relates to a new catalyst system that improves the heat transfer capability of a butyl reactor slurry process system in the production of isobutylene-based polymers in continuous slurry polymerization processes. The process is carried out in an anhydrous polymerization system containing a mixture of the monomers in a polar diluent along with a Lewis acid and a C5 or greater initiator having a tertiary halide.
    Type: Grant
    Filed: July 25, 2003
    Date of Patent: February 22, 2005
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Robert Norman Webb, Michael Francis McDonald, David Yen-Lung Chung, Yuan-Ju Chen, Richard Dwight Hembree, John Patrick Soisson
  • Process for polymerizing cationically polymerizable monomers
    Publication number: 20040059076
    Abstract: The invention relates to a new catalyst system that improves the heat transfer capability of a butyl reactor slurry process system in the production of isobutylene-based polymers in continuous slurry polymerization processes. The process is carried out in an anhydrous polymerization system containing a mixture of the monomers in a polar diluent along with a Lewis acid and a C5 or greater initiator having a tertiary halide.
    Type: Application
    Filed: July 25, 2003
    Publication date: March 25, 2004
    Inventors: Robert Norman Webb, Michael Francis McDonald, David Yen-Lung Chung, Yuan-Ju Chen, Richard Dwight Hembree, John Patrick Soisson