Patents by Inventor Edward C. Ballard

Edward C. Ballard 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).

  • Ethylene copolymer blends and adhesives based thereon
    Patent number: 4338227
    Abstract: Homogeneous blends of at least two non-crosslinked ethylene copolymers having different polar comonomer contents are mildly crosslinked to reduce their melt index. The crosslinked blend can be mixed with tackifier, plasticizer, filler and antioxidant to yield hot melt pressure sensitive adhesive compositions. In the alternative, at least one of the two ethylene copolymers can be crosslinked prior to blending in the hot melt pressure sensitive adhesive composition.
    Type: Grant
    Filed: April 24, 1981
    Date of Patent: July 6, 1982
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Edward C. Ballard