Patents by Inventor Morgan M. Hughes

Morgan M. Hughes 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).

  • Method of improving the oxidative thermal stability of ethylene polymers
    Patent number: 5756659
    Abstract: A method of improving the oxidative thermal stability of ethylene polymers is disclosed. The method comprises removing residual unreacted monomer(s), solvent and thermally unstable species from the molten polymer. The resulting polymer is characterized by having an oxidative exotherm of not more than about 50 percent of the original polymer, as measured by differential scanning calorimetry.
    Type: Grant
    Filed: October 21, 1994
    Date of Patent: May 26, 1998
    Assignee: The Dow Chemical Company
    Inventors: Morgan M. Hughes, Michael E. Rowland, Chad A. Strait
  • Silane-crosslinkable elastomer-polyolefin polymer blends their preparation and use
    Patent number: 5741858
    Abstract: Molded articles of silane-crosslinked blends comprising a polyolefin elastomer and a crystalline polyolefin polymer exhibit desirable tensile strength and/or compression set properties, and are prepared by (i) blending a low density polyolefin elastomer with a crystalline polyolefin polymer, (ii) grafting the blend with a silane crosslinker, (iii) shaping the silane-grafted blend into the molded article, and (iv) curing the shaped, silane-grafted blend with water, preferably in the presence of a cure catalyst.
    Type: Grant
    Filed: May 31, 1996
    Date of Patent: April 21, 1998
    Assignee: The Dow Chemical Company
    Inventors: Jeffery E. Brann, Morgan M. Hughes, Stephen H. Cree, John Penfold
  • Blends of polycarbonate and linear ethylene polymers
    Patent number: 5712333
    Abstract: A blend of polycarbonate and a homogeneously branched, linear ethylene polymer, which blend has a desirable balance of impact resistance and toughness properties.
    Type: Grant
    Filed: August 12, 1996
    Date of Patent: January 27, 1998
    Assignee: The Dow Chemical Company
    Inventors: Frank M. Hofmeister, Hani Farah, Morgan M. Hughes, Steve R. Ellebracht
  • Graft-modified substantially linear ethylene polymers and methods for their use
    Patent number: 5705565
    Abstract: Substantially linear ethylene polymers, e.g., polyethylenes prepared by constrained geometry catalysis (substantially linear ethylene), which are grafted with one or more unsaturated organic compounds containing both ethylenic unsaturation and a carbonyl group, e.g., maleic anhydride, exhibit desirable adhesive properties. These graft-modified substantially linear ethylene polymers also impart desirable compatibility and impact properties to various thermoplastic polymer blends.
    Type: Grant
    Filed: September 9, 1994
    Date of Patent: January 6, 1998
    Assignee: The Dow Chemical Company
    Inventors: Morgan M. Hughes, Kyle G. Kummer, Stephen R. Betso, Michael E. Rowland, Morris S. Edmondson
  • Blends of polycarbonate and ethylene polymers
    Patent number: 5416148
    Abstract: A blend of polycarbonate and a substantially linear ethylene polymer which has a desirable balance of impact and solvent resistance properties.
    Type: Grant
    Filed: September 9, 1994
    Date of Patent: May 16, 1995
    Assignee: The Dow Chemical Company
    Inventors: Hani Farah, Michael K. Laughner, Chai-Jing Chou, Morgan M. Hughes
  • Graft-modified, substantially linear ethylene polymers and methods for their use
    Patent number: 5346963
    Abstract: Substantially linear ethylene polymers, e.g., polyethylenes prepared by constrained geometry catalysis (substantially linear ethylene), which are grafted with one or more unsaturated organic compounds containing both ethylenic unsaturation and a carbonyl group, e.g., maleic anhydride, exhibit desirable adhesive properties. These graft-modified substantially linear ethylene polymers also impart desirable compatibility and impact properties to various thermoplastic polymer blends.
    Type: Grant
    Filed: April 28, 1993
    Date of Patent: September 13, 1994
    Assignee: The Dow Chemical Company
    Inventors: Morgan M. Hughes, Kyle G. Kummer, Stephen R. Betso, Michael E. Rowland, Morris S. Edmondson