Patents by Inventor Virginia Hayes Guffey

Virginia Hayes Guffey 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).

  • Chlorinated polyolefin impact modifier for vinyl chloride polymers
    Patent number: 6875820
    Abstract: Chlorinated olefin polymers prepared from olefin polymer base resins having I10 values of 0.05-0.8 dg/minute act as impact modifiers for vinyl chloride polymers under low to ambient temperature conditions. When vinyl chloride polymers are mixed with a preferred class of the chlorinated polymers, having chlorine contents of 20-30 percent by weight, compositions that exhibit short fusion times and low fusion temperatures are produced.
    Type: Grant
    Filed: April 18, 2001
    Date of Patent: April 5, 2005
    Assignee: DuPont Dow Elastomers LLC
    Inventors: Mark Thomas Berard, Virginia Hayes Guffey, Gary Robert Marchand
  • Chlorinated polyolefin impact modifier for vinyl chloride polymers
    Publication number: 20040039119
    Abstract: Chlorinated olefin polymers prepared from olefin polymer base resins having I10 values of 0.05-0.8 dg/minute act as impact modifiers for vinyl chloride polymers under low to ambient temperature conditions. When vinyl chloride polymers are mixed with a preferred class of the chlorinated polymers, having chlorine contents of 20-30 percent by weight, compositions that exhibit short fusion times and low fusion temperatures are produced.
    Type: Application
    Filed: September 9, 2002
    Publication date: February 26, 2004
    Inventors: Mark Thomas Berard, Virginia Hayes Guffey, Gary Robert Marchand