Patents by Inventor Michael B. McIntosh

Michael B. McIntosh 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).

  • Phosphinimine modification of organic polymers and silicones
    Patent number: 6339166
    Abstract: Methods have been developed to produce phosphazene modified organic or siloxane polymers. The method includes (a) providing an organic or siloxane polymer comprising phosphine units, and (b) reacting the organic or siloxane polymer with a phosphazene azide compound under conditions wherein the phosphazene azide compound is bound to the phosphine unites in the polymer, thereby producing the phosphazene-modified organic or siloxane polymer. The organic polymer of step (a) is produced by reacting a first monomer comprising phosphine with a second monomer via free radical or anionic polymerization techniques to produce the organic polymer comprising phosphine units. The first and second monomers can be identical. A wide variety of organic polymer backbones can be modified using these techniques.
    Type: Grant
    Filed: May 7, 2001
    Date of Patent: January 15, 2002
    Assignee: The Penn State Research Foundation
    Inventors: Harry R. Allcock, Thomas J. Hartle, Michael B. McIntosh, Nicolas J. Sunderland, Robbyn Prange, Jonathan P. Taylor
  • Phosphinimine modification of organic polymers and silicones
    Publication number: 20020002247
    Abstract: Methods have been developed to produce phosphazene modified organic or siloxane polymers. The method includes (a) providing an organic or siloxane polymer comprising phosphine units, and (b) reacting the organic or siloxane polymer with a phosphazene azide compound under conditions wherein the phosphazene azide compound is bound to the phosphine units in the polymer, thereby producing the phosphazene-modified organic or siloxane polymer. The organic polymer of step (a) is produced by reacting a first monomer comprising phosphine with a second monomer via free radical or anionic polymerization techniques to produce the organic polymer comprising phosphine units. The first and second monomers can be identical. A wide variety of organic polymer backbones can be modified using these techniques.
    Type: Application
    Filed: May 7, 2001
    Publication date: January 3, 2002
    Inventors: Harry R. Allcock, Thomas J. Hartle, Michael B. McIntosh, Nicolas J. Sunderland, Robbyn Prange, Jonathan P. Taylor
  • Phosphazene azide coupling agents and their use in rheology modification of polymers
    Patent number: 6291618
    Abstract: The present invention relates to cyclic phosphazene azides and their use in a process for producing a rheology modified polymer which comprises contacting a polymer with a cyclic phosphazene azide at a temperature which is at least the decomposition temperature of the cyclic phosphazene azide. When the cyclic phosphazene azide reacts with the polymer, at least two separate polymer chains are advantageously joined and the molecular weight of the polymer chain is increased.
    Type: Grant
    Filed: October 27, 2000
    Date of Patent: September 18, 2001
    Assignee: The Dow Chemical Company
    Inventors: H. Craig Silvis, Michael B. McIntosh